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(global, factory) {\ntypeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\ntypeof define === 'function' && define.amd ? define(factory) :\n(global = global || self, global.RBush = factory());\n}(this, function () { 'use strict';\n\nfunction quickselect(arr, k, left, right, compare) {\n    quickselectStep(arr, k, left || 0, right || (arr.length - 1), compare || defaultCompare);\n}\n\nfunction quickselectStep(arr, k, left, right, compare) {\n\n    while (right > left) {\n        if (right - left > 600) {\n            var n = right - left + 1;\n            var m = k - left + 1;\n            var z = Math.log(n);\n            var s = 0.5 * Math.exp(2 * z / 3);\n            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n            quickselectStep(arr, k, newLeft, newRight, compare);\n        }\n\n        var t = arr[k];\n        var i = left;\n        var j = right;\n\n        swap(arr, left, k);\n        if (compare(arr[right], t) > 0) { swap(arr, left, right); }\n\n        while (i < j) {\n            swap(arr, i, j);\n            i++;\n            j--;\n            while (compare(arr[i], t) < 0) { i++; }\n            while (compare(arr[j], t) > 0) { j--; }\n        }\n\n        if (compare(arr[left], t) === 0) { swap(arr, left, j); }\n        else {\n            j++;\n            swap(arr, j, right);\n        }\n\n        if (j <= k) { left = j + 1; }\n        if (k <= j) { right = j - 1; }\n    }\n}\n\nfunction swap(arr, i, j) {\n    var tmp = arr[i];\n    arr[i] = arr[j];\n    arr[j] = tmp;\n}\n\nfunction defaultCompare(a, b) {\n    return a < b ? -1 : a > b ? 1 : 0;\n}\n\nvar RBush = function RBush(maxEntries) {\n    if ( maxEntries === void 0 ) maxEntries = 9;\n\n    // max entries in a node is 9 by default; min node fill is 40% for best performance\n    this._maxEntries = Math.max(4, maxEntries);\n    this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));\n    this.clear();\n};\n\nRBush.prototype.all = function all () {\n    return this._all(this.data, []);\n};\n\nRBush.prototype.search = function search (bbox) {\n    var node = this.data;\n    var result = [];\n\n    if (!intersects(bbox, node)) { return result; }\n\n    var toBBox = this.toBBox;\n    var nodesToSearch = [];\n\n    while (node) {\n        for (var i = 0; i < node.children.length; i++) {\n            var child = node.children[i];\n            var childBBox = node.leaf ? toBBox(child) : child;\n\n            if (intersects(bbox, childBBox)) {\n                if (node.leaf) { result.push(child); }\n                else if (contains(bbox, childBBox)) { this._all(child, result); }\n                else { nodesToSearch.push(child); }\n            }\n        }\n        node = nodesToSearch.pop();\n    }\n\n    return result;\n};\n\nRBush.prototype.collides = function collides (bbox) {\n    var node = this.data;\n\n    if (!intersects(bbox, node)) { return false; }\n\n    var nodesToSearch = [];\n    while (node) {\n        for (var i = 0; i < node.children.length; i++) {\n            var child = node.children[i];\n            var childBBox = node.leaf ? this.toBBox(child) : child;\n\n            if (intersects(bbox, childBBox)) {\n                if (node.leaf || contains(bbox, childBBox)) { return true; }\n                nodesToSearch.push(child);\n            }\n        }\n        node = nodesToSearch.pop();\n    }\n\n    return false;\n};\n\nRBush.prototype.load = function load (data) {\n    if (!(data && data.length)) { return this; }\n\n    if (data.length < this._minEntries) {\n        for (var i = 0; i < data.length; i++) {\n            this.insert(data[i]);\n        }\n        return this;\n    }\n\n    // recursively build the tree with the given data from scratch using OMT algorithm\n    var node = this._build(data.slice(), 0, data.length - 1, 0);\n\n    if (!this.data.children.length) {\n        // save as is if tree is empty\n        this.data = node;\n\n    } else if (this.data.height === node.height) {\n        // split root if trees have the same height\n        this._splitRoot(this.data, node);\n\n    } else {\n        if (this.data.height < node.height) {\n            // swap trees if inserted one is bigger\n            var tmpNode = this.data;\n            this.data = node;\n            node = tmpNode;\n        }\n\n        // insert the small tree into the large tree at appropriate level\n        this._insert(node, this.data.height - node.height - 1, true);\n    }\n\n    return this;\n};\n\nRBush.prototype.insert = function insert (item) {\n    if (item) { this._insert(item, this.data.height - 1); }\n    return this;\n};\n\nRBush.prototype.clear = function clear () {\n    this.data = createNode([]);\n    return this;\n};\n\nRBush.prototype.remove = function remove (item, equalsFn) {\n    if (!item) { return this; }\n\n    var node = this.data;\n    var bbox = this.toBBox(item);\n    var path = [];\n    var indexes = [];\n    var i, parent, goingUp;\n\n    // depth-first iterative tree traversal\n    while (node || path.length) {\n\n        if (!node) { // go up\n            node = path.pop();\n            parent = path[path.length - 1];\n            i = indexes.pop();\n            goingUp = true;\n        }\n\n        if (node.leaf) { // check current node\n            var index = findItem(item, node.children, equalsFn);\n\n            if (index !== -1) {\n                // item found, remove the item and condense tree upwards\n                node.children.splice(index, 1);\n                path.push(node);\n                this._condense(path);\n                return this;\n            }\n        }\n\n        if (!goingUp && !node.leaf && contains(node, bbox)) { // go down\n            path.push(node);\n            indexes.push(i);\n            i = 0;\n            parent = node;\n            node = node.children[0];\n\n        } else if (parent) { // go right\n            i++;\n            node = parent.children[i];\n            goingUp = false;\n\n        } else { node = null; } // nothing found\n    }\n\n    return this;\n};\n\nRBush.prototype.toBBox = function toBBox (item) { return item; };\n\nRBush.prototype.compareMinX = function compareMinX (a, b) { return a.minX - b.minX; };\nRBush.prototype.compareMinY = function compareMinY (a, b) { return a.minY - b.minY; };\n\nRBush.prototype.toJSON = function toJSON () { return this.data; };\n\nRBush.prototype.fromJSON = function fromJSON (data) {\n    this.data = data;\n    return this;\n};\n\nRBush.prototype._all = function _all (node, result) {\n    var nodesToSearch = [];\n    while (node) {\n        if (node.leaf) { result.push.apply(result, node.children); }\n        else { nodesToSearch.push.apply(nodesToSearch, node.children); }\n\n        node = nodesToSearch.pop();\n    }\n    return result;\n};\n\nRBush.prototype._build = function _build (items, left, right, height) {\n\n    var N = right - left + 1;\n    var M = this._maxEntries;\n    var node;\n\n    if (N <= M) {\n        // reached leaf level; return leaf\n        node = createNode(items.slice(left, right + 1));\n        calcBBox(node, this.toBBox);\n        return node;\n    }\n\n    if (!height) {\n        // target height of the bulk-loaded tree\n        height = Math.ceil(Math.log(N) / Math.log(M));\n\n        // target number of root entries to maximize storage utilization\n        M = Math.ceil(N / Math.pow(M, height - 1));\n    }\n\n    node = createNode([]);\n    node.leaf = false;\n    node.height = height;\n\n    // split the items into M mostly square tiles\n\n    var N2 = Math.ceil(N / M);\n    var N1 = N2 * Math.ceil(Math.sqrt(M));\n\n    multiSelect(items, left, right, N1, this.compareMinX);\n\n    for (var i = left; i <= right; i += N1) {\n\n        var right2 = Math.min(i + N1 - 1, right);\n\n        multiSelect(items, i, right2, N2, this.compareMinY);\n\n        for (var j = i; j <= right2; j += N2) {\n\n            var right3 = Math.min(j + N2 - 1, right2);\n\n            // pack each entry recursively\n            node.children.push(this._build(items, j, right3, height - 1));\n        }\n    }\n\n    calcBBox(node, this.toBBox);\n\n    return node;\n};\n\nRBush.prototype._chooseSubtree = function _chooseSubtree (bbox, node, level, path) {\n    while (true) {\n        path.push(node);\n\n        if (node.leaf || path.length - 1 === level) { break; }\n\n        var minArea = Infinity;\n        var minEnlargement = Infinity;\n        var targetNode = (void 0);\n\n        for (var i = 0; i < node.children.length; i++) {\n            var child = node.children[i];\n            var area = bboxArea(child);\n            var enlargement = enlargedArea(bbox, child) - area;\n\n            // choose entry with the least area enlargement\n            if (enlargement < minEnlargement) {\n                minEnlargement = enlargement;\n                minArea = area < minArea ? area : minArea;\n                targetNode = child;\n\n            } else if (enlargement === minEnlargement) {\n                // otherwise choose one with the smallest area\n                if (area < minArea) {\n                    minArea = area;\n                    targetNode = child;\n                }\n            }\n        }\n\n        node = targetNode || node.children[0];\n    }\n\n    return node;\n};\n\nRBush.prototype._insert = function _insert (item, level, isNode) {\n    var bbox = isNode ? item : this.toBBox(item);\n    var insertPath = [];\n\n    // find the best node for accommodating the item, saving all nodes along the path too\n    var node = this._chooseSubtree(bbox, this.data, level, insertPath);\n\n    // put the item into the node\n    node.children.push(item);\n    extend(node, bbox);\n\n    // split on node overflow; propagate upwards if necessary\n    while (level >= 0) {\n        if (insertPath[level].children.length > this._maxEntries) {\n            this._split(insertPath, level);\n            level--;\n        } else { break; }\n    }\n\n    // adjust bboxes along the insertion path\n    this._adjustParentBBoxes(bbox, insertPath, level);\n};\n\n// split overflowed node into two\nRBush.prototype._split = function _split (insertPath, level) {\n    var node = insertPath[level];\n    var M = node.children.length;\n    var m = this._minEntries;\n\n    this._chooseSplitAxis(node, m, M);\n\n    var splitIndex = this._chooseSplitIndex(node, m, M);\n\n    var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));\n    newNode.height = node.height;\n    newNode.leaf = node.leaf;\n\n    calcBBox(node, this.toBBox);\n    calcBBox(newNode, this.toBBox);\n\n    if (level) { insertPath[level - 1].children.push(newNode); }\n    else { this._splitRoot(node, newNode); }\n};\n\nRBush.prototype._splitRoot = function _splitRoot (node, newNode) {\n    // split root node\n    this.data = createNode([node, newNode]);\n    this.data.height = node.height + 1;\n    this.data.leaf = false;\n    calcBBox(this.data, this.toBBox);\n};\n\nRBush.prototype._chooseSplitIndex = function _chooseSplitIndex (node, m, M) {\n    var index;\n    var minOverlap = Infinity;\n    var minArea = Infinity;\n\n    for (var i = m; i <= M - m; i++) {\n        var bbox1 = distBBox(node, 0, i, this.toBBox);\n        var bbox2 = distBBox(node, i, M, this.toBBox);\n\n        var overlap = intersectionArea(bbox1, bbox2);\n        var area = bboxArea(bbox1) + bboxArea(bbox2);\n\n        // choose distribution with minimum overlap\n        if (overlap < minOverlap) {\n            minOverlap = overlap;\n            index = i;\n\n            minArea = area < minArea ? area : minArea;\n\n        } else if (overlap === minOverlap) {\n            // otherwise choose distribution with minimum area\n            if (area < minArea) {\n                minArea = area;\n                index = i;\n            }\n        }\n    }\n\n    return index || M - m;\n};\n\n// sorts node children by the best axis for split\nRBush.prototype._chooseSplitAxis = function _chooseSplitAxis (node, m, M) {\n    var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX;\n    var compareMinY = node.leaf ? this.compareMinY : compareNodeMinY;\n    var xMargin = this._allDistMargin(node, m, M, compareMinX);\n    var yMargin = this._allDistMargin(node, m, M, compareMinY);\n\n    // if total distributions margin value is minimal for x, sort by minX,\n    // otherwise it's already sorted by minY\n    if (xMargin < yMargin) { node.children.sort(compareMinX); }\n};\n\n// total margin of all possible split distributions where each node is at least m full\nRBush.prototype._allDistMargin = function _allDistMargin (node, m, M, compare) {\n    node.children.sort(compare);\n\n    var toBBox = this.toBBox;\n    var leftBBox = distBBox(node, 0, m, toBBox);\n    var rightBBox = distBBox(node, M - m, M, toBBox);\n    var margin = bboxMargin(leftBBox) + bboxMargin(rightBBox);\n\n    for (var i = m; i < M - m; i++) {\n        var child = node.children[i];\n        extend(leftBBox, node.leaf ? toBBox(child) : child);\n        margin += bboxMargin(leftBBox);\n    }\n\n    for (var i$1 = M - m - 1; i$1 >= m; i$1--) {\n        var child$1 = node.children[i$1];\n        extend(rightBBox, node.leaf ? toBBox(child$1) : child$1);\n        margin += bboxMargin(rightBBox);\n    }\n\n    return margin;\n};\n\nRBush.prototype._adjustParentBBoxes = function _adjustParentBBoxes (bbox, path, level) {\n    // adjust bboxes along the given tree path\n    for (var i = level; i >= 0; i--) {\n        extend(path[i], bbox);\n    }\n};\n\nRBush.prototype._condense = function _condense (path) {\n    // go through the path, removing empty nodes and updating bboxes\n    for (var i = path.length - 1, siblings = (void 0); i >= 0; i--) {\n        if (path[i].children.length === 0) {\n            if (i > 0) {\n                siblings = path[i - 1].children;\n                siblings.splice(siblings.indexOf(path[i]), 1);\n\n            } else { this.clear(); }\n\n        } else { calcBBox(path[i], this.toBBox); }\n    }\n};\n\nfunction findItem(item, items, equalsFn) {\n    if (!equalsFn) { return items.indexOf(item); }\n\n    for (var i = 0; i < items.length; i++) {\n        if (equalsFn(item, items[i])) { return i; }\n    }\n    return -1;\n}\n\n// calculate node's bbox from bboxes of its children\nfunction calcBBox(node, toBBox) {\n    distBBox(node, 0, node.children.length, toBBox, node);\n}\n\n// min bounding rectangle of node children from k to p-1\nfunction distBBox(node, k, p, toBBox, destNode) {\n    if (!destNode) { destNode = createNode(null); }\n    destNode.minX = Infinity;\n    destNode.minY = Infinity;\n    destNode.maxX = -Infinity;\n    destNode.maxY = -Infinity;\n\n    for (var i = k; i < p; i++) {\n        var child = node.children[i];\n        extend(destNode, node.leaf ? toBBox(child) : child);\n    }\n\n    return destNode;\n}\n\nfunction extend(a, b) {\n    a.minX = Math.min(a.minX, b.minX);\n    a.minY = Math.min(a.minY, b.minY);\n    a.maxX = Math.max(a.maxX, b.maxX);\n    a.maxY = Math.max(a.maxY, b.maxY);\n    return a;\n}\n\nfunction compareNodeMinX(a, b) { return a.minX - b.minX; }\nfunction compareNodeMinY(a, b) { return a.minY - b.minY; }\n\nfunction bboxArea(a)   { return (a.maxX - a.minX) * (a.maxY - a.minY); }\nfunction bboxMargin(a) { return (a.maxX - a.minX) + (a.maxY - a.minY); }\n\nfunction enlargedArea(a, b) {\n    return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) *\n           (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));\n}\n\nfunction intersectionArea(a, b) {\n    var minX = Math.max(a.minX, b.minX);\n    var minY = Math.max(a.minY, b.minY);\n    var maxX = Math.min(a.maxX, b.maxX);\n    var maxY = Math.min(a.maxY, b.maxY);\n\n    return Math.max(0, maxX - minX) *\n           Math.max(0, maxY - minY);\n}\n\nfunction contains(a, b) {\n    return a.minX <= b.minX &&\n           a.minY <= b.minY &&\n           b.maxX <= a.maxX &&\n           b.maxY <= a.maxY;\n}\n\nfunction intersects(a, b) {\n    return b.minX <= a.maxX &&\n           b.minY <= a.maxY &&\n           b.maxX >= a.minX &&\n           b.maxY >= a.minY;\n}\n\nfunction createNode(children) {\n    return {\n        children: children,\n        height: 1,\n        leaf: true,\n        minX: Infinity,\n        minY: Infinity,\n        maxX: -Infinity,\n        maxY: -Infinity\n    };\n}\n\n// sort an array so that items come in groups of n unsorted items, with groups sorted between each other;\n// combines selection algorithm with binary divide & conquer approach\n\nfunction multiSelect(arr, left, right, n, compare) {\n    var stack = [left, right];\n\n    while (stack.length) {\n        right = stack.pop();\n        left = stack.pop();\n\n        if (right - left <= n) { continue; }\n\n        var mid = left + Math.ceil((right - left) / n / 2) * n;\n        quickselect(arr, mid, left, right, compare);\n\n        stack.push(left, mid, mid, right);\n    }\n}\n\nreturn RBush;\n\n}));\n","// This Source Code Form is subject to the terms of the Mozilla Public\n// License, v. 2.0. If a copy of the MPL was not distributed with this\n// file, You can obtain one at http://mozilla.org/MPL/2.0/\n// Variable to hold current primary touch event identifier.\n// iOS needs this since it does not attribute\n// identifier 0 to primary touch event.\nvar primaryTouchId = null;\n// Variable to hold mouse pointer captures.\nvar mouseCaptureTarget = null;\nif (!(\"PointerEvent\" in window)) {\n    // Define {set,release}PointerCapture\n    definePointerCapture();\n    // Create Pointer polyfill from mouse events only on non-touch device\n    if (!(\"TouchEvent\" in window)) {\n        addMouseToPointerListener(document, \"mousedown\", \"pointerdown\");\n        addMouseToPointerListener(document, \"mousemove\", \"pointermove\");\n        addMouseToPointerListener(document, \"mouseup\", \"pointerup\");\n    }\n    // Define Pointer polyfill from touch events\n    addTouchToPointerListener(document, \"touchstart\", \"pointerdown\");\n    addTouchToPointerListener(document, \"touchmove\", \"pointermove\");\n    addTouchToPointerListener(document, \"touchend\", \"pointerup\");\n}\n// Function defining {set,release}PointerCapture from {set,releas}Capture\nfunction definePointerCapture() {\n    Element.prototype.setPointerCapture = Element.prototype.setCapture;\n    Element.prototype.releasePointerCapture = Element.prototype.releaseCapture;\n}\n// Function converting a Mouse event to a Pointer event.\nfunction addMouseToPointerListener(target, mouseType, pointerType) {\n    target.addEventListener(mouseType, function (mouseEvent) {\n        var pointerEvent = new MouseEvent(pointerType, mouseEvent);\n        pointerEvent.pointerId = 1;\n        pointerEvent.isPrimary = true;\n        pointerEvent.pointerType = \"mouse\";\n        pointerEvent.width = 1;\n        pointerEvent.height = 1;\n        pointerEvent.tiltX = 0;\n        pointerEvent.tiltY = 0;\n        // pressure is 0.5 if a button is holded\n        \"buttons\" in mouseEvent && mouseEvent.buttons !== 0\n            ? (pointerEvent.pressure = 0.5)\n            : (pointerEvent.pressure = 0);\n        // if already capturing mouse event, transfer target\n        // and don't forget implicit release on mouseup.\n        var target = mouseEvent.target;\n        if (mouseCaptureTarget !== null) {\n            target = mouseCaptureTarget;\n            if (mouseType === \"mouseup\") {\n                mouseCaptureTarget = null;\n            }\n        }\n        target.dispatchEvent(pointerEvent);\n        if (pointerEvent.defaultPrevented) {\n            mouseEvent.preventDefault();\n        }\n    });\n}\n// Function converting a Touch event to a Pointer event.\nfunction addTouchToPointerListener(target, touchType, pointerType) {\n    target.addEventListener(touchType, function (touchEvent) {\n        var changedTouches = touchEvent.changedTouches;\n        var nbTouches = changedTouches.length;\n        for (var t = 0; t < nbTouches; t++) {\n            var pointerEvent = new CustomEvent(pointerType, {\n                bubbles: true,\n                cancelable: true\n            });\n            pointerEvent.ctrlKey = touchEvent.ctrlKey;\n            pointerEvent.shiftKey = touchEvent.shiftKey;\n            pointerEvent.altKey = touchEvent.altKey;\n            pointerEvent.metaKey = touchEvent.metaKey;\n            var touch = changedTouches.item(t);\n            pointerEvent.clientX = touch.clientX;\n            pointerEvent.clientY = touch.clientY;\n            pointerEvent.screenX = touch.screenX;\n            pointerEvent.screenY = touch.screenY;\n            pointerEvent.pageX = touch.pageX;\n            pointerEvent.pageY = touch.pageY;\n            var rect = touch.target.getBoundingClientRect();\n            pointerEvent.offsetX = touch.clientX - rect.left;\n            pointerEvent.offsetY = touch.clientY - rect.top;\n            pointerEvent.pointerId = 1 + touch.identifier;\n            // Default values for standard MouseEvent fields.\n            pointerEvent.button = 0;\n            pointerEvent.buttons = 1;\n            pointerEvent.movementX = 0;\n            pointerEvent.movementY = 0;\n            pointerEvent.region = null;\n            pointerEvent.relatedTarget = null;\n            pointerEvent.x = pointerEvent.clientX;\n            pointerEvent.y = pointerEvent.clientY;\n            // Pointer event details\n            pointerEvent.pointerType = \"touch\";\n            pointerEvent.width = 1;\n            pointerEvent.height = 1;\n            pointerEvent.tiltX = 0;\n            pointerEvent.tiltY = 0;\n            pointerEvent.pressure = 1;\n            // First touch is the primary pointer event.\n            if (touchType === \"touchstart\" && primaryTouchId === null) {\n                primaryTouchId = touch.identifier;\n            }\n            pointerEvent.isPrimary = touch.identifier === primaryTouchId;\n            // If first touch ends, reset primary touch id.\n            if (touchType === \"touchend\" && pointerEvent.isPrimary) {\n                primaryTouchId = null;\n            }\n            touchEvent.target.dispatchEvent(pointerEvent);\n            if (pointerEvent.defaultPrevented) {\n                touchEvent.preventDefault();\n            }\n        }\n    });\n}\n//# sourceMappingURL=elm-pep.js.map","/**\n * @module ol/array\n */\n/**\n * Performs a binary search on the provided sorted list and returns the index of the item if found. If it can't be found it'll return -1.\n * https://github.com/darkskyapp/binary-search\n *\n * @param {Array<*>} haystack Items to search through.\n * @param {*} needle The item to look for.\n * @param {Function=} opt_comparator Comparator function.\n * @return {number} The index of the item if found, -1 if not.\n */\nexport function binarySearch(haystack, needle, opt_comparator) {\n    var mid, cmp;\n    var comparator = opt_comparator || numberSafeCompareFunction;\n    var low = 0;\n    var high = haystack.length;\n    var found = false;\n    while (low < high) {\n        /* Note that \"(low + high) >>> 1\" may overflow, and results in a typecast\n         * to double (which gives the wrong results). */\n        mid = low + (high - low >> 1);\n        cmp = +comparator(haystack[mid], needle);\n        if (cmp < 0.0) { /* Too low. */\n            low = mid + 1;\n        }\n        else { /* Key found or too high */\n            high = mid;\n            found = !cmp;\n        }\n    }\n    /* Key not found. */\n    return found ? low : ~low;\n}\n/**\n * Compare function for array sort that is safe for numbers.\n * @param {*} a The first object to be compared.\n * @param {*} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n *     argument is less than, equal to, or greater than the second.\n */\nexport function numberSafeCompareFunction(a, b) {\n    return a > b ? 1 : a < b ? -1 : 0;\n}\n/**\n * Whether the array contains the given object.\n * @param {Array<*>} arr The array to test for the presence of the element.\n * @param {*} obj The object for which to test.\n * @return {boolean} The object is in the array.\n */\nexport function includes(arr, obj) {\n    return arr.indexOf(obj) >= 0;\n}\n/**\n * @param {Array<number>} arr Array.\n * @param {number} target Target.\n * @param {number} direction 0 means return the nearest, > 0\n *    means return the largest nearest, < 0 means return the\n *    smallest nearest.\n * @return {number} Index.\n */\nexport function linearFindNearest(arr, target, direction) {\n    var n = arr.length;\n    if (arr[0] <= target) {\n        return 0;\n    }\n    else if (target <= arr[n - 1]) {\n        return n - 1;\n    }\n    else {\n        var i = void 0;\n        if (direction > 0) {\n            for (i = 1; i < n; ++i) {\n                if (arr[i] < target) {\n                    return i - 1;\n                }\n            }\n        }\n        else if (direction < 0) {\n            for (i = 1; i < n; ++i) {\n                if (arr[i] <= target) {\n                    return i;\n                }\n            }\n        }\n        else {\n            for (i = 1; i < n; ++i) {\n                if (arr[i] == target) {\n                    return i;\n                }\n                else if (arr[i] < target) {\n                    if (arr[i - 1] - target < target - arr[i]) {\n                        return i - 1;\n                    }\n                    else {\n                        return i;\n                    }\n                }\n            }\n        }\n        return n - 1;\n    }\n}\n/**\n * @param {Array<*>} arr Array.\n * @param {number} begin Begin index.\n * @param {number} end End index.\n */\nexport function reverseSubArray(arr, begin, end) {\n    while (begin < end) {\n        var tmp = arr[begin];\n        arr[begin] = arr[end];\n        arr[end] = tmp;\n        ++begin;\n        --end;\n    }\n}\n/**\n * @param {Array<VALUE>} arr The array to modify.\n * @param {!Array<VALUE>|VALUE} data The elements or arrays of elements to add to arr.\n * @template VALUE\n */\nexport function extend(arr, data) {\n    var extension = Array.isArray(data) ? data : [data];\n    var length = extension.length;\n    for (var i = 0; i < length; i++) {\n        arr[arr.length] = extension[i];\n    }\n}\n/**\n * @param {Array<VALUE>} arr The array to modify.\n * @param {VALUE} obj The element to remove.\n * @template VALUE\n * @return {boolean} If the element was removed.\n */\nexport function remove(arr, obj) {\n    var i = arr.indexOf(obj);\n    var found = i > -1;\n    if (found) {\n        arr.splice(i, 1);\n    }\n    return found;\n}\n/**\n * @param {Array<VALUE>} arr The array to search in.\n * @param {function(VALUE, number, ?) : boolean} func The function to compare.\n * @template VALUE\n * @return {VALUE|null} The element found or null.\n */\nexport function find(arr, func) {\n    var length = arr.length >>> 0;\n    var value;\n    for (var i = 0; i < length; i++) {\n        value = arr[i];\n        if (func(value, i, arr)) {\n            return value;\n        }\n    }\n    return null;\n}\n/**\n * @param {Array|Uint8ClampedArray} arr1 The first array to compare.\n * @param {Array|Uint8ClampedArray} arr2 The second array to compare.\n * @return {boolean} Whether the two arrays are equal.\n */\nexport function equals(arr1, arr2) {\n    var len1 = arr1.length;\n    if (len1 !== arr2.length) {\n        return false;\n    }\n    for (var i = 0; i < len1; i++) {\n        if (arr1[i] !== arr2[i]) {\n            return false;\n        }\n    }\n    return true;\n}\n/**\n * Sort the passed array such that the relative order of equal elements is preverved.\n * See https://en.wikipedia.org/wiki/Sorting_algorithm#Stability for details.\n * @param {Array<*>} arr The array to sort (modifies original).\n * @param {!function(*, *): number} compareFnc Comparison function.\n * @api\n */\nexport function stableSort(arr, compareFnc) {\n    var length = arr.length;\n    var tmp = Array(arr.length);\n    var i;\n    for (i = 0; i < length; i++) {\n        tmp[i] = { index: i, value: arr[i] };\n    }\n    tmp.sort(function (a, b) {\n        return compareFnc(a.value, b.value) || a.index - b.index;\n    });\n    for (i = 0; i < arr.length; i++) {\n        arr[i] = tmp[i].value;\n    }\n}\n/**\n * @param {Array<*>} arr The array to search in.\n * @param {Function} func Comparison function.\n * @return {number} Return index.\n */\nexport function findIndex(arr, func) {\n    var index;\n    var found = !arr.every(function (el, idx) {\n        index = idx;\n        return !func(el, idx, arr);\n    });\n    return found ? index : -1;\n}\n/**\n * @param {Array<*>} arr The array to test.\n * @param {Function=} opt_func Comparison function.\n * @param {boolean=} opt_strict Strictly sorted (default false).\n * @return {boolean} Return index.\n */\nexport function isSorted(arr, opt_func, opt_strict) {\n    var compare = opt_func || numberSafeCompareFunction;\n    return arr.every(function (currentVal, index) {\n        if (index === 0) {\n            return true;\n        }\n        var res = compare(arr[index - 1], currentVal);\n        return !(res > 0 || opt_strict && res === 0);\n    });\n}\n//# sourceMappingURL=array.js.map","/**\n * @module ol/functions\n */\nimport { equals as arrayEquals } from './array.js';\n/**\n * Always returns true.\n * @returns {boolean} true.\n */\nexport function TRUE() {\n    return true;\n}\n/**\n * Always returns false.\n * @returns {boolean} false.\n */\nexport function FALSE() {\n    return false;\n}\n/**\n * A reusable function, used e.g. as a default for callbacks.\n *\n * @return {void} Nothing.\n */\nexport function VOID() { }\n/**\n * Wrap a function in another function that remembers the last return.  If the\n * returned function is called twice in a row with the same arguments and the same\n * this object, it will return the value from the first call in the second call.\n *\n * @param {function(...any): ReturnType} fn The function to memoize.\n * @return {function(...any): ReturnType} The memoized function.\n * @template ReturnType\n */\nexport function memoizeOne(fn) {\n    var called = false;\n    /** @type {ReturnType} */\n    var lastResult;\n    /** @type {Array<any>} */\n    var lastArgs;\n    var lastThis;\n    return function () {\n        var nextArgs = Array.prototype.slice.call(arguments);\n        if (!called || this !== lastThis || !arrayEquals(nextArgs, lastArgs)) {\n            called = true;\n            lastThis = this;\n            lastArgs = nextArgs;\n            lastResult = fn.apply(this, arguments);\n        }\n        return lastResult;\n    };\n}\n//# sourceMappingURL=functions.js.map","/**\n * @module ol/MapEventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered after a map frame is rendered.\n     * @event module:ol/MapEvent~MapEvent#postrender\n     * @api\n     */\n    POSTRENDER: 'postrender',\n    /**\n     * Triggered when the map starts moving.\n     * @event module:ol/MapEvent~MapEvent#movestart\n     * @api\n     */\n    MOVESTART: 'movestart',\n    /**\n     * Triggered after the map is moved.\n     * @event module:ol/MapEvent~MapEvent#moveend\n     * @api\n     */\n    MOVEEND: 'moveend'\n};\n//# sourceMappingURL=MapEventType.js.map","/**\n * @module ol/util\n */\n/**\n * @return {?} Any return.\n */\nexport function abstract() {\n    return /** @type {?} */ ((function () {\n        throw new Error('Unimplemented abstract method.');\n    })());\n}\n/**\n * Counter for getUid.\n * @type {number}\n * @private\n */\nvar uidCounter_ = 0;\n/**\n * Gets a unique ID for an object. This mutates the object so that further calls\n * with the same object as a parameter returns the same value. Unique IDs are generated\n * as a strictly increasing sequence. Adapted from goog.getUid.\n *\n * @param {Object} obj The object to get the unique ID for.\n * @return {string} The unique ID for the object.\n * @api\n */\nexport function getUid(obj) {\n    return obj.ol_uid || (obj.ol_uid = String(++uidCounter_));\n}\n/**\n * OpenLayers version.\n * @type {string}\n */\nexport var VERSION = '6.3.1';\n//# sourceMappingURL=util.js.map","/**\n * @module ol/ObjectEventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered when a property is changed.\n     * @event module:ol/Object.ObjectEvent#propertychange\n     * @api\n     */\n    PROPERTYCHANGE: 'propertychange'\n};\n//# sourceMappingURL=ObjectEventType.js.map","/**\n * @module ol/obj\n */\n/**\n * Polyfill for Object.assign().  Assigns enumerable and own properties from\n * one or more source objects to a target object.\n * See https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign.\n *\n * @param {!Object} target The target object.\n * @param {...Object} var_sources The source object(s).\n * @return {!Object} The modified target object.\n */\nexport var assign = (typeof Object.assign === 'function') ? Object.assign : function (target, var_sources) {\n    if (target === undefined || target === null) {\n        throw new TypeError('Cannot convert undefined or null to object');\n    }\n    var output = Object(target);\n    for (var i = 1, ii = arguments.length; i < ii; ++i) {\n        var source = arguments[i];\n        if (source !== undefined && source !== null) {\n            for (var key in source) {\n                if (source.hasOwnProperty(key)) {\n                    output[key] = source[key];\n                }\n            }\n        }\n    }\n    return output;\n};\n/**\n * Removes all properties from an object.\n * @param {Object} object The object to clear.\n */\nexport function clear(object) {\n    for (var property in object) {\n        delete object[property];\n    }\n}\n/**\n * Polyfill for Object.values().  Get an array of property values from an object.\n * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values\n *\n * @param {!Object<K,V>} object The object from which to get the values.\n * @return {!Array<V>} The property values.\n * @template K,V\n */\nexport var getValues = (typeof Object.values === 'function') ? Object.values : function (object) {\n    var values = [];\n    for (var property in object) {\n        values.push(object[property]);\n    }\n    return values;\n};\n/**\n * Determine if an object has any properties.\n * @param {Object} object The object to check.\n * @return {boolean} The object is empty.\n */\nexport function isEmpty(object) {\n    var property;\n    for (property in object) {\n        return false;\n    }\n    return !property;\n}\n//# sourceMappingURL=obj.js.map","/**\n * @module ol/events\n */\nimport { clear } from './obj.js';\n/**\n * Key to use with {@link module:ol/Observable~Observable#unByKey}.\n * @typedef {Object} EventsKey\n * @property {ListenerFunction} listener\n * @property {import(\"./events/Target.js\").EventTargetLike} target\n * @property {string} type\n * @api\n */\n/**\n * Listener function. This function is called with an event object as argument.\n * When the function returns `false`, event propagation will stop.\n *\n * @typedef {function((Event|import(\"./events/Event.js\").default)): (void|boolean)} ListenerFunction\n * @api\n */\n/**\n * @typedef {Object} ListenerObject\n * @property {ListenerFunction} handleEvent\n */\n/**\n * @typedef {ListenerFunction|ListenerObject} Listener\n */\n/**\n * Registers an event listener on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * This function efficiently binds a `listener` to a `this` object, and returns\n * a key for use with {@link module:ol/events~unlistenByKey}.\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Event target.\n * @param {string} type Event type.\n * @param {ListenerFunction} listener Listener.\n * @param {Object=} opt_this Object referenced by the `this` keyword in the\n *     listener. Default is the `target`.\n * @param {boolean=} opt_once If true, add the listener as one-off listener.\n * @return {EventsKey} Unique key for the listener.\n */\nexport function listen(target, type, listener, opt_this, opt_once) {\n    if (opt_this && opt_this !== target) {\n        listener = listener.bind(opt_this);\n    }\n    if (opt_once) {\n        var originalListener_1 = listener;\n        listener = function () {\n            target.removeEventListener(type, listener);\n            originalListener_1.apply(this, arguments);\n        };\n    }\n    var eventsKey = {\n        target: target,\n        type: type,\n        listener: listener\n    };\n    target.addEventListener(type, listener);\n    return eventsKey;\n}\n/**\n * Registers a one-off event listener on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * This function efficiently binds a `listener` as self-unregistering listener\n * to a `this` object, and returns a key for use with\n * {@link module:ol/events~unlistenByKey} in case the listener needs to be\n * unregistered before it is called.\n *\n * When {@link module:ol/events~listen} is called with the same arguments after this\n * function, the self-unregistering listener will be turned into a permanent\n * listener.\n *\n * @param {import(\"./events/Target.js\").EventTargetLike} target Event target.\n * @param {string} type Event type.\n * @param {ListenerFunction} listener Listener.\n * @param {Object=} opt_this Object referenced by the `this` keyword in the\n *     listener. Default is the `target`.\n * @return {EventsKey} Key for unlistenByKey.\n */\nexport function listenOnce(target, type, listener, opt_this) {\n    return listen(target, type, listener, opt_this, true);\n}\n/**\n * Unregisters event listeners on an event target. Inspired by\n * https://google.github.io/closure-library/api/source/closure/goog/events/events.js.src.html\n *\n * The argument passed to this function is the key returned from\n * {@link module:ol/events~listen} or {@link module:ol/events~listenOnce}.\n *\n * @param {EventsKey} key The key.\n */\nexport function unlistenByKey(key) {\n    if (key && key.target) {\n        key.target.removeEventListener(key.type, key.listener);\n        clear(key);\n    }\n}\n//# sourceMappingURL=events.js.map","/**\n * @module ol/Disposable\n */\n/**\n * @classdesc\n * Objects that need to clean up after themselves.\n */\nvar Disposable = /** @class */ (function () {\n    function Disposable() {\n        /**\n         * The object has already been disposed.\n         * @type {boolean}\n         * @private\n         */\n        this.disposed_ = false;\n    }\n    /**\n     * Clean up.\n     */\n    Disposable.prototype.dispose = function () {\n        if (!this.disposed_) {\n            this.disposed_ = true;\n            this.disposeInternal();\n        }\n    };\n    /**\n     * Extension point for disposable objects.\n     * @protected\n     */\n    Disposable.prototype.disposeInternal = function () { };\n    return Disposable;\n}());\nexport default Disposable;\n//# sourceMappingURL=Disposable.js.map","/**\n * @module ol/events/Event\n */\n/**\n * @classdesc\n * Stripped down implementation of the W3C DOM Level 2 Event interface.\n * See https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface.\n *\n * This implementation only provides `type` and `target` properties, and\n * `stopPropagation` and `preventDefault` methods. It is meant as base class\n * for higher level events defined in the library, and works with\n * {@link module:ol/events/Target~Target}.\n */\nvar BaseEvent = /** @class */ (function () {\n    /**\n     * @param {string} type Type.\n     */\n    function BaseEvent(type) {\n        /**\n         * @type {boolean}\n         */\n        this.propagationStopped;\n        /**\n         * The event type.\n         * @type {string}\n         * @api\n         */\n        this.type = type;\n        /**\n         * The event target.\n         * @type {Object}\n         * @api\n         */\n        this.target = null;\n    }\n    /**\n     * Stop event propagation.\n     * @api\n     */\n    BaseEvent.prototype.preventDefault = function () {\n        this.propagationStopped = true;\n    };\n    /**\n     * Stop event propagation.\n     * @api\n     */\n    BaseEvent.prototype.stopPropagation = function () {\n        this.propagationStopped = true;\n    };\n    return BaseEvent;\n}());\n/**\n * @param {Event|import(\"./Event.js\").default} evt Event\n */\nexport function stopPropagation(evt) {\n    evt.stopPropagation();\n}\n/**\n * @param {Event|import(\"./Event.js\").default} evt Event\n */\nexport function preventDefault(evt) {\n    evt.preventDefault();\n}\nexport default BaseEvent;\n//# sourceMappingURL=Event.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/events/Target\n */\nimport Disposable from '../Disposable.js';\nimport { VOID } from '../functions.js';\nimport Event from './Event.js';\nimport { clear } from '../obj.js';\n/**\n * @typedef {EventTarget|Target} EventTargetLike\n */\n/**\n * @classdesc\n * A simplified implementation of the W3C DOM Level 2 EventTarget interface.\n * See https://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-EventTarget.\n *\n * There are two important simplifications compared to the specification:\n *\n * 1. The handling of `useCapture` in `addEventListener` and\n *    `removeEventListener`. There is no real capture model.\n * 2. The handling of `stopPropagation` and `preventDefault` on `dispatchEvent`.\n *    There is no event target hierarchy. When a listener calls\n *    `stopPropagation` or `preventDefault` on an event object, it means that no\n *    more listeners after this one will be called. Same as when the listener\n *    returns false.\n */\nvar Target = /** @class */ (function (_super) {\n    __extends(Target, _super);\n    /**\n     * @param {*=} opt_target Default event target for dispatched events.\n     */\n    function Target(opt_target) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {*}\n         */\n        _this.eventTarget_ = opt_target;\n        /**\n         * @private\n         * @type {!Object<string, number>}\n         */\n        _this.pendingRemovals_ = {};\n        /**\n         * @private\n         * @type {!Object<string, number>}\n         */\n        _this.dispatching_ = {};\n        /**\n         * @private\n         * @type {!Object<string, Array<import(\"../events.js\").Listener>>}\n         */\n        _this.listeners_ = {};\n        return _this;\n    }\n    /**\n     * @param {string} type Type.\n     * @param {import(\"../events.js\").Listener} listener Listener.\n     */\n    Target.prototype.addEventListener = function (type, listener) {\n        if (!type || !listener) {\n            return;\n        }\n        var listeners = this.listeners_[type];\n        if (!listeners) {\n            listeners = [];\n            this.listeners_[type] = listeners;\n        }\n        if (listeners.indexOf(listener) === -1) {\n            listeners.push(listener);\n        }\n    };\n    /**\n     * Dispatches an event and calls all listeners listening for events\n     * of this type. The event parameter can either be a string or an\n     * Object with a `type` property.\n     *\n     * @param {import(\"./Event.js\").default|string} event Event object.\n     * @return {boolean|undefined} `false` if anyone called preventDefault on the\n     *     event object or if any of the listeners returned false.\n     * @api\n     */\n    Target.prototype.dispatchEvent = function (event) {\n        /** @type {import(\"./Event.js\").default|Event} */\n        var evt = typeof event === 'string' ? new Event(event) : event;\n        var type = evt.type;\n        if (!evt.target) {\n            evt.target = this.eventTarget_ || this;\n        }\n        var listeners = this.listeners_[type];\n        var propagate;\n        if (listeners) {\n            if (!(type in this.dispatching_)) {\n                this.dispatching_[type] = 0;\n                this.pendingRemovals_[type] = 0;\n            }\n            ++this.dispatching_[type];\n            for (var i = 0, ii = listeners.length; i < ii; ++i) {\n                if ('handleEvent' in listeners[i]) {\n                    propagate = /** @type {import(\"../events.js\").ListenerObject} */ (listeners[i]).handleEvent(evt);\n                }\n                else {\n                    propagate = /** @type {import(\"../events.js\").ListenerFunction} */ (listeners[i]).call(this, evt);\n                }\n                if (propagate === false || evt.propagationStopped) {\n                    propagate = false;\n                    break;\n                }\n            }\n            --this.dispatching_[type];\n            if (this.dispatching_[type] === 0) {\n                var pendingRemovals = this.pendingRemovals_[type];\n                delete this.pendingRemovals_[type];\n                while (pendingRemovals--) {\n                    this.removeEventListener(type, VOID);\n                }\n                delete this.dispatching_[type];\n            }\n            return propagate;\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    Target.prototype.disposeInternal = function () {\n        clear(this.listeners_);\n    };\n    /**\n     * Get the listeners for a specified event type. Listeners are returned in the\n     * order that they will be called in.\n     *\n     * @param {string} type Type.\n     * @return {Array<import(\"../events.js\").Listener>} Listeners.\n     */\n    Target.prototype.getListeners = function (type) {\n        return this.listeners_[type];\n    };\n    /**\n     * @param {string=} opt_type Type. If not provided,\n     *     `true` will be returned if this event target has any listeners.\n     * @return {boolean} Has listeners.\n     */\n    Target.prototype.hasListener = function (opt_type) {\n        return opt_type ?\n            opt_type in this.listeners_ :\n            Object.keys(this.listeners_).length > 0;\n    };\n    /**\n     * @param {string} type Type.\n     * @param {import(\"../events.js\").Listener} listener Listener.\n     */\n    Target.prototype.removeEventListener = function (type, listener) {\n        var listeners = this.listeners_[type];\n        if (listeners) {\n            var index = listeners.indexOf(listener);\n            if (index !== -1) {\n                if (type in this.pendingRemovals_) {\n                    // make listener a no-op, and remove later in #dispatchEvent()\n                    listeners[index] = VOID;\n                    ++this.pendingRemovals_[type];\n                }\n                else {\n                    listeners.splice(index, 1);\n                    if (listeners.length === 0) {\n                        delete this.listeners_[type];\n                    }\n                }\n            }\n        }\n    };\n    return Target;\n}(Disposable));\nexport default Target;\n//# sourceMappingURL=Target.js.map","/**\n * @module ol/events/EventType\n */\n/**\n * @enum {string}\n * @const\n */\nexport default {\n    /**\n     * Generic change event. Triggered when the revision counter is increased.\n     * @event module:ol/events/Event~BaseEvent#change\n     * @api\n     */\n    CHANGE: 'change',\n    /**\n     * Generic error event. Triggered when an error occurs.\n     * @event module:ol/events/Event~BaseEvent#error\n     * @api\n     */\n    ERROR: 'error',\n    BLUR: 'blur',\n    CLEAR: 'clear',\n    CONTEXTMENU: 'contextmenu',\n    CLICK: 'click',\n    DBLCLICK: 'dblclick',\n    DRAGENTER: 'dragenter',\n    DRAGOVER: 'dragover',\n    DROP: 'drop',\n    FOCUS: 'focus',\n    KEYDOWN: 'keydown',\n    KEYPRESS: 'keypress',\n    LOAD: 'load',\n    RESIZE: 'resize',\n    TOUCHMOVE: 'touchmove',\n    WHEEL: 'wheel'\n};\n//# sourceMappingURL=EventType.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Observable\n */\nimport { listen, unlistenByKey, listenOnce } from './events.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * An event target providing convenient methods for listener registration\n * and unregistration. A generic `change` event is always available through\n * {@link module:ol/Observable~Observable#changed}.\n *\n * @fires import(\"./events/Event.js\").default\n * @api\n */\nvar Observable = /** @class */ (function (_super) {\n    __extends(Observable, _super);\n    function Observable() {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.revision_ = 0;\n        return _this;\n    }\n    /**\n     * Increases the revision counter and dispatches a 'change' event.\n     * @api\n     */\n    Observable.prototype.changed = function () {\n        ++this.revision_;\n        this.dispatchEvent(EventType.CHANGE);\n    };\n    /**\n     * Get the version number for this object.  Each time the object is modified,\n     * its version number will be incremented.\n     * @return {number} Revision.\n     * @api\n     */\n    Observable.prototype.getRevision = function () {\n        return this.revision_;\n    };\n    /**\n     * Listen for a certain type of event.\n     * @param {string|Array<string>} type The event type or array of event types.\n     * @param {import(\"./events.js\").ListenerFunction} listener The listener function.\n     * @return {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} Unique key for the listener. If\n     *     called with an array of event types as the first argument, the return\n     *     will be an array of keys.\n     * @api\n     */\n    Observable.prototype.on = function (type, listener) {\n        if (Array.isArray(type)) {\n            var len = type.length;\n            var keys = new Array(len);\n            for (var i = 0; i < len; ++i) {\n                keys[i] = listen(this, type[i], listener);\n            }\n            return keys;\n        }\n        else {\n            return listen(this, /** @type {string} */ (type), listener);\n        }\n    };\n    /**\n     * Listen once for a certain type of event.\n     * @param {string|Array<string>} type The event type or array of event types.\n     * @param {function(?): ?} listener The listener function.\n     * @return {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} Unique key for the listener. If\n     *     called with an array of event types as the first argument, the return\n     *     will be an array of keys.\n     * @api\n     */\n    Observable.prototype.once = function (type, listener) {\n        if (Array.isArray(type)) {\n            var len = type.length;\n            var keys = new Array(len);\n            for (var i = 0; i < len; ++i) {\n                keys[i] = listenOnce(this, type[i], listener);\n            }\n            return keys;\n        }\n        else {\n            return listenOnce(this, /** @type {string} */ (type), listener);\n        }\n    };\n    /**\n     * Unlisten for a certain type of event.\n     * @param {string|Array<string>} type The event type or array of event types.\n     * @param {function(?): ?} listener The listener function.\n     * @api\n     */\n    Observable.prototype.un = function (type, listener) {\n        if (Array.isArray(type)) {\n            for (var i = 0, ii = type.length; i < ii; ++i) {\n                this.removeEventListener(type[i], listener);\n            }\n        }\n        else {\n            this.removeEventListener(type, listener);\n        }\n    };\n    return Observable;\n}(EventTarget));\n/**\n * Removes an event listener using the key returned by `on()` or `once()`.\n * @param {import(\"./events.js\").EventsKey|Array<import(\"./events.js\").EventsKey>} key The key returned by `on()`\n *     or `once()` (or an array of keys).\n * @api\n */\nexport function unByKey(key) {\n    if (Array.isArray(key)) {\n        for (var i = 0, ii = key.length; i < ii; ++i) {\n            unlistenByKey(key[i]);\n        }\n    }\n    else {\n        unlistenByKey(/** @type {import(\"./events.js\").EventsKey} */ (key));\n    }\n}\nexport default Observable;\n//# sourceMappingURL=Observable.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Object\n */\nimport { getUid } from './util.js';\nimport ObjectEventType from './ObjectEventType.js';\nimport Observable from './Observable.js';\nimport Event from './events/Event.js';\nimport { assign } from './obj.js';\n/**\n * @classdesc\n * Events emitted by {@link module:ol/Object~BaseObject} instances are instances of this type.\n */\nvar ObjectEvent = /** @class */ (function (_super) {\n    __extends(ObjectEvent, _super);\n    /**\n     * @param {string} type The event type.\n     * @param {string} key The property name.\n     * @param {*} oldValue The old value for `key`.\n     */\n    function ObjectEvent(type, key, oldValue) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The name of the property whose value is changing.\n         * @type {string}\n         * @api\n         */\n        _this.key = key;\n        /**\n         * The old value. To get the new value use `e.target.get(e.key)` where\n         * `e` is the event object.\n         * @type {*}\n         * @api\n         */\n        _this.oldValue = oldValue;\n        return _this;\n    }\n    return ObjectEvent;\n}(Event));\nexport { ObjectEvent };\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Most non-trivial classes inherit from this.\n *\n * This extends {@link module:ol/Observable} with observable\n * properties, where each property is observable as well as the object as a\n * whole.\n *\n * Classes that inherit from this have pre-defined properties, to which you can\n * add your owns. The pre-defined properties are listed in this documentation as\n * 'Observable Properties', and have their own accessors; for example,\n * {@link module:ol/Map~Map} has a `target` property, accessed with\n * `getTarget()` and changed with `setTarget()`. Not all properties are however\n * settable. There are also general-purpose accessors `get()` and `set()`. For\n * example, `get('target')` is equivalent to `getTarget()`.\n *\n * The `set` accessors trigger a change event, and you can monitor this by\n * registering a listener. For example, {@link module:ol/View~View} has a\n * `center` property, so `view.on('change:center', function(evt) {...});` would\n * call the function whenever the value of the center property changes. Within\n * the function, `evt.target` would be the view, so `evt.target.getCenter()`\n * would return the new center.\n *\n * You can add your own observable properties with\n * `object.set('prop', 'value')`, and retrieve that with `object.get('prop')`.\n * You can listen for changes on that property value with\n * `object.on('change:prop', listener)`. You can get a list of all\n * properties with {@link module:ol/Object~BaseObject#getProperties}.\n *\n * Note that the observable properties are separate from standard JS properties.\n * You can, for example, give your map object a title with\n * `map.title='New title'` and with `map.set('title', 'Another title')`. The\n * first will be a `hasOwnProperty`; the second will appear in\n * `getProperties()`. Only the second is observable.\n *\n * Properties can be deleted by using the unset method. E.g.\n * object.unset('foo').\n *\n * @fires ObjectEvent\n * @api\n */\nvar BaseObject = /** @class */ (function (_super) {\n    __extends(BaseObject, _super);\n    /**\n     * @param {Object<string, *>=} opt_values An object with key-value pairs.\n     */\n    function BaseObject(opt_values) {\n        var _this = _super.call(this) || this;\n        // Call {@link module:ol/util~getUid} to ensure that the order of objects' ids is\n        // the same as the order in which they were created.  This also helps to\n        // ensure that object properties are always added in the same order, which\n        // helps many JavaScript engines generate faster code.\n        getUid(_this);\n        /**\n         * @private\n         * @type {!Object<string, *>}\n         */\n        _this.values_ = {};\n        if (opt_values !== undefined) {\n            _this.setProperties(opt_values);\n        }\n        return _this;\n    }\n    /**\n     * Gets a value.\n     * @param {string} key Key name.\n     * @return {*} Value.\n     * @api\n     */\n    BaseObject.prototype.get = function (key) {\n        var value;\n        if (this.values_.hasOwnProperty(key)) {\n            value = this.values_[key];\n        }\n        return value;\n    };\n    /**\n     * Get a list of object property names.\n     * @return {Array<string>} List of property names.\n     * @api\n     */\n    BaseObject.prototype.getKeys = function () {\n        return Object.keys(this.values_);\n    };\n    /**\n     * Get an object of all property names and values.\n     * @return {Object<string, *>} Object.\n     * @api\n     */\n    BaseObject.prototype.getProperties = function () {\n        return assign({}, this.values_);\n    };\n    /**\n     * @param {string} key Key name.\n     * @param {*} oldValue Old value.\n     */\n    BaseObject.prototype.notify = function (key, oldValue) {\n        var eventType;\n        eventType = getChangeEventType(key);\n        this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));\n        eventType = ObjectEventType.PROPERTYCHANGE;\n        this.dispatchEvent(new ObjectEvent(eventType, key, oldValue));\n    };\n    /**\n     * Sets a value.\n     * @param {string} key Key name.\n     * @param {*} value Value.\n     * @param {boolean=} opt_silent Update without triggering an event.\n     * @api\n     */\n    BaseObject.prototype.set = function (key, value, opt_silent) {\n        if (opt_silent) {\n            this.values_[key] = value;\n        }\n        else {\n            var oldValue = this.values_[key];\n            this.values_[key] = value;\n            if (oldValue !== value) {\n                this.notify(key, oldValue);\n            }\n        }\n    };\n    /**\n     * Sets a collection of key-value pairs.  Note that this changes any existing\n     * properties and adds new ones (it does not remove any existing properties).\n     * @param {Object<string, *>} values Values.\n     * @param {boolean=} opt_silent Update without triggering an event.\n     * @api\n     */\n    BaseObject.prototype.setProperties = function (values, opt_silent) {\n        for (var key in values) {\n            this.set(key, values[key], opt_silent);\n        }\n    };\n    /**\n     * Unsets a property.\n     * @param {string} key Key name.\n     * @param {boolean=} opt_silent Unset without triggering an event.\n     * @api\n     */\n    BaseObject.prototype.unset = function (key, opt_silent) {\n        if (key in this.values_) {\n            var oldValue = this.values_[key];\n            delete this.values_[key];\n            if (!opt_silent) {\n                this.notify(key, oldValue);\n            }\n        }\n    };\n    return BaseObject;\n}(Observable));\n/**\n * @type {Object<string, string>}\n */\nvar changeEventTypeCache = {};\n/**\n * @param {string} key Key name.\n * @return {string} Change name.\n */\nexport function getChangeEventType(key) {\n    return changeEventTypeCache.hasOwnProperty(key) ?\n        changeEventTypeCache[key] :\n        (changeEventTypeCache[key] = 'change:' + key);\n}\nexport default BaseObject;\n//# sourceMappingURL=Object.js.map","/**\n * @module ol/has\n */\nvar ua = typeof navigator !== 'undefined' ?\n    navigator.userAgent.toLowerCase() : '';\n/**\n * User agent string says we are dealing with Firefox as browser.\n * @type {boolean}\n */\nexport var FIREFOX = ua.indexOf('firefox') !== -1;\n/**\n * User agent string says we are dealing with Safari as browser.\n * @type {boolean}\n */\nexport var SAFARI = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') == -1;\n/**\n * User agent string says we are dealing with a WebKit engine.\n * @type {boolean}\n */\nexport var WEBKIT = ua.indexOf('webkit') !== -1 && ua.indexOf('edge') == -1;\n/**\n * User agent string says we are dealing with a Mac as platform.\n * @type {boolean}\n */\nexport var MAC = ua.indexOf('macintosh') !== -1;\n/**\n * The ratio between physical pixels and device-independent pixels\n * (dips) on the device (`window.devicePixelRatio`).\n * @const\n * @type {number}\n * @api\n */\nexport var DEVICE_PIXEL_RATIO = typeof devicePixelRatio !== 'undefined' ? devicePixelRatio : 1;\n/**\n * The execution context is a worker with OffscreenCanvas available.\n * @const\n * @type {boolean}\n */\nexport var WORKER_OFFSCREEN_CANVAS = typeof WorkerGlobalScope !== 'undefined' && typeof OffscreenCanvas !== 'undefined' &&\n    self instanceof WorkerGlobalScope; //eslint-disable-line\n/**\n * Image.prototype.decode() is supported.\n * @type {boolean}\n */\nexport var IMAGE_DECODE = typeof Image !== 'undefined' && Image.prototype.decode;\n/**\n * @type {boolean}\n */\nexport var PASSIVE_EVENT_LISTENERS = (function () {\n    var passive = false;\n    try {\n        var options = Object.defineProperty({}, 'passive', {\n            get: function () {\n                passive = true;\n            }\n        });\n        window.addEventListener('_', null, options);\n        window.removeEventListener('_', null, options);\n    }\n    catch (error) {\n        // passive not supported\n    }\n    return passive;\n})();\n//# sourceMappingURL=has.js.map","import { WORKER_OFFSCREEN_CANVAS } from './has.js';\n/**\n * @module ol/dom\n */\n//FIXME Move this function to the canvas module\n/**\n * Create an html canvas element and returns its 2d context.\n * @param {number=} opt_width Canvas width.\n * @param {number=} opt_height Canvas height.\n * @param {Array<HTMLCanvasElement>=} opt_canvasPool Canvas pool to take existing canvas from.\n * @return {CanvasRenderingContext2D} The context.\n */\nexport function createCanvasContext2D(opt_width, opt_height, opt_canvasPool) {\n    var canvas = opt_canvasPool && opt_canvasPool.length ?\n        opt_canvasPool.shift() :\n        WORKER_OFFSCREEN_CANVAS ?\n            new OffscreenCanvas(opt_width || 300, opt_height || 300) :\n            document.createElement('canvas');\n    if (opt_width) {\n        canvas.width = opt_width;\n    }\n    if (opt_height) {\n        canvas.height = opt_height;\n    }\n    //FIXME Allow OffscreenCanvasRenderingContext2D as return type\n    return /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d'));\n}\n/**\n * Get the current computed width for the given element including margin,\n * padding and border.\n * Equivalent to jQuery's `$(el).outerWidth(true)`.\n * @param {!HTMLElement} element Element.\n * @return {number} The width.\n */\nexport function outerWidth(element) {\n    var width = element.offsetWidth;\n    var style = getComputedStyle(element);\n    width += parseInt(style.marginLeft, 10) + parseInt(style.marginRight, 10);\n    return width;\n}\n/**\n * Get the current computed height for the given element including margin,\n * padding and border.\n * Equivalent to jQuery's `$(el).outerHeight(true)`.\n * @param {!HTMLElement} element Element.\n * @return {number} The height.\n */\nexport function outerHeight(element) {\n    var height = element.offsetHeight;\n    var style = getComputedStyle(element);\n    height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10);\n    return height;\n}\n/**\n * @param {Node} newNode Node to replace old node\n * @param {Node} oldNode The node to be replaced\n */\nexport function replaceNode(newNode, oldNode) {\n    var parent = oldNode.parentNode;\n    if (parent) {\n        parent.replaceChild(newNode, oldNode);\n    }\n}\n/**\n * @param {Node} node The node to remove.\n * @returns {Node} The node that was removed or null.\n */\nexport function removeNode(node) {\n    return node && node.parentNode ? node.parentNode.removeChild(node) : null;\n}\n/**\n * @param {Node} node The node to remove the children from.\n */\nexport function removeChildren(node) {\n    while (node.lastChild) {\n        node.removeChild(node.lastChild);\n    }\n}\n/**\n * Transform the children of a parent node so they match the\n * provided list of children.  This function aims to efficiently\n * remove, add, and reorder child nodes while maintaining a simple\n * implementation (it is not guaranteed to minimize DOM operations).\n * @param {Node} node The parent node whose children need reworking.\n * @param {Array<Node>} children The desired children.\n */\nexport function replaceChildren(node, children) {\n    var oldChildren = node.childNodes;\n    for (var i = 0; true; ++i) {\n        var oldChild = oldChildren[i];\n        var newChild = children[i];\n        // check if our work is done\n        if (!oldChild && !newChild) {\n            break;\n        }\n        // check if children match\n        if (oldChild === newChild) {\n            continue;\n        }\n        // check if a new child needs to be added\n        if (!oldChild) {\n            node.appendChild(newChild);\n            continue;\n        }\n        // check if an old child needs to be removed\n        if (!newChild) {\n            node.removeChild(oldChild);\n            --i;\n            continue;\n        }\n        // reorder\n        node.insertBefore(newChild, oldChild);\n    }\n}\n//# sourceMappingURL=dom.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/Control\n */\nimport { VOID } from '../functions.js';\nimport MapEventType from '../MapEventType.js';\nimport BaseObject from '../Object.js';\nimport { removeNode } from '../dom.js';\nimport { listen, unlistenByKey } from '../events.js';\n/**\n * @typedef {Object} Options\n * @property {HTMLElement} [element] The element is the control's\n * container element. This only needs to be specified if you're developing\n * a custom control.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when\n * the control should be re-rendered. This is called in a `requestAnimationFrame`\n * callback.\n * @property {HTMLElement|string} [target] Specify a target if you want\n * the control to be rendered outside of the map's viewport.\n */\n/**\n * @classdesc\n * A control is a visible widget with a DOM element in a fixed position on the\n * screen. They can involve user input (buttons), or be informational only;\n * the position is determined using CSS. By default these are placed in the\n * container with CSS class name `ol-overlaycontainer-stopevent`, but can use\n * any outside DOM element.\n *\n * This is the base class for controls. You can use it for simple custom\n * controls by creating the element with listeners, creating an instance:\n * ```js\n * var myControl = new Control({element: myElement});\n * ```\n * and then adding this to the map.\n *\n * The main advantage of having this as a control rather than a simple separate\n * DOM element is that preventing propagation is handled for you. Controls\n * will also be objects in a {@link module:ol/Collection~Collection}, so you can use their methods.\n *\n * You can also extend this base for your own control class. See\n * examples/custom-controls for an example of how to do this.\n *\n * @api\n */\nvar Control = /** @class */ (function (_super) {\n    __extends(Control, _super);\n    /**\n     * @param {Options} options Control options.\n     */\n    function Control(options) {\n        var _this = _super.call(this) || this;\n        /**\n         * @protected\n         * @type {HTMLElement}\n         */\n        _this.element = options.element ? options.element : null;\n        /**\n         * @private\n         * @type {HTMLElement}\n         */\n        _this.target_ = null;\n        /**\n         * @private\n         * @type {import(\"../PluggableMap.js\").default}\n         */\n        _this.map_ = null;\n        /**\n         * @protected\n         * @type {!Array<import(\"../events.js\").EventsKey>}\n         */\n        _this.listenerKeys = [];\n        /**\n         * @private\n         * @type {function(import(\"../MapEvent.js\").default): void}\n         */\n        _this.render_ = options.render ? options.render : VOID;\n        if (options.target) {\n            _this.setTarget(options.target);\n        }\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    Control.prototype.disposeInternal = function () {\n        removeNode(this.element);\n        _super.prototype.disposeInternal.call(this);\n    };\n    /**\n     * Get the map associated with this control.\n     * @return {import(\"../PluggableMap.js\").default} Map.\n     * @api\n     */\n    Control.prototype.getMap = function () {\n        return this.map_;\n    };\n    /**\n     * Remove the control from its current map and attach it to the new map.\n     * Subclasses may set up event handlers to get notified about changes to\n     * the map here.\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     * @api\n     */\n    Control.prototype.setMap = function (map) {\n        if (this.map_) {\n            removeNode(this.element);\n        }\n        for (var i = 0, ii = this.listenerKeys.length; i < ii; ++i) {\n            unlistenByKey(this.listenerKeys[i]);\n        }\n        this.listenerKeys.length = 0;\n        this.map_ = map;\n        if (this.map_) {\n            var target = this.target_ ?\n                this.target_ : map.getOverlayContainerStopEvent();\n            target.appendChild(this.element);\n            if (this.render !== VOID) {\n                this.listenerKeys.push(listen(map, MapEventType.POSTRENDER, this.render, this));\n            }\n            map.render();\n        }\n    };\n    /**\n     * Update the projection. Rendering of the coordinates is done in\n     * `handleMouseMove` and `handleMouseUp`.\n     * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n     * @api\n     */\n    Control.prototype.render = function (mapEvent) {\n        this.render_.call(this, mapEvent);\n    };\n    /**\n     * This function is used to set a target element for the control. It has no\n     * effect if it is called after the control has been added to the map (i.e.\n     * after `setMap` is called on the control). If no `target` is set in the\n     * options passed to the control constructor and if `setTarget` is not called\n     * then the control is added to the map's overlay container.\n     * @param {HTMLElement|string} target Target.\n     * @api\n     */\n    Control.prototype.setTarget = function (target) {\n        this.target_ = typeof target === 'string' ?\n            document.getElementById(target) :\n            target;\n    };\n    return Control;\n}(BaseObject));\nexport default Control;\n//# sourceMappingURL=Control.js.map","/**\n * @module ol/css\n */\n/**\n * @typedef {Object} FontParameters\n * @property {string} style\n * @property {string} variant\n * @property {string} weight\n * @property {string} size\n * @property {string} lineHeight\n * @property {string} family\n * @property {Array<string>} families\n */\n/**\n * The CSS class for hidden feature.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_HIDDEN = 'ol-hidden';\n/**\n * The CSS class that we'll give the DOM elements to have them selectable.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_SELECTABLE = 'ol-selectable';\n/**\n * The CSS class that we'll give the DOM elements to have them unselectable.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_UNSELECTABLE = 'ol-unselectable';\n/**\n * The CSS class for unsupported feature.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_UNSUPPORTED = 'ol-unsupported';\n/**\n * The CSS class for controls.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_CONTROL = 'ol-control';\n/**\n * The CSS class that we'll give the DOM elements that are collapsed, i.e.\n * to those elements which usually can be expanded.\n *\n * @const\n * @type {string}\n */\nexport var CLASS_COLLAPSED = 'ol-collapsed';\n/**\n * From http://stackoverflow.com/questions/10135697/regex-to-parse-any-css-font\n * @type {RegExp}\n */\nvar fontRegEx = new RegExp([\n    '^\\\\s*(?=(?:(?:[-a-z]+\\\\s*){0,2}(italic|oblique))?)',\n    '(?=(?:(?:[-a-z]+\\\\s*){0,2}(small-caps))?)',\n    '(?=(?:(?:[-a-z]+\\\\s*){0,2}(bold(?:er)?|lighter|[1-9]00 ))?)',\n    '(?:(?:normal|\\\\1|\\\\2|\\\\3)\\\\s*){0,3}((?:xx?-)?',\n    '(?:small|large)|medium|smaller|larger|[\\\\.\\\\d]+(?:\\\\%|in|[cem]m|ex|p[ctx]))',\n    '(?:\\\\s*\\\\/\\\\s*(normal|[\\\\.\\\\d]+(?:\\\\%|in|[cem]m|ex|p[ctx])?))',\n    '?\\\\s*([-,\\\\\"\\\\\\'\\\\sa-z]+?)\\\\s*$'\n].join(''), 'i');\nvar fontRegExMatchIndex = [\n    'style',\n    'variant',\n    'weight',\n    'size',\n    'lineHeight',\n    'family'\n];\n/**\n * Get the list of font families from a font spec.  Note that this doesn't work\n * for font families that have commas in them.\n * @param {string} fontSpec The CSS font property.\n * @return {FontParameters} The font parameters (or null if the input spec is invalid).\n */\nexport var getFontParameters = function (fontSpec) {\n    var match = fontSpec.match(fontRegEx);\n    if (!match) {\n        return null;\n    }\n    var style = /** @type {FontParameters} */ ({\n        lineHeight: 'normal',\n        size: '1.2em',\n        style: 'normal',\n        weight: 'normal',\n        variant: 'normal'\n    });\n    for (var i = 0, ii = fontRegExMatchIndex.length; i < ii; ++i) {\n        var value = match[i + 1];\n        if (value !== undefined) {\n            style[fontRegExMatchIndex[i]] = value;\n        }\n    }\n    style.families = style.family.split(/,\\s?/);\n    return style;\n};\n//# sourceMappingURL=css.js.map","/**\n * @module ol/easing\n */\n/**\n * Start slow and speed up.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function easeIn(t) {\n    return Math.pow(t, 3);\n}\n/**\n * Start fast and slow down.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function easeOut(t) {\n    return 1 - easeIn(1 - t);\n}\n/**\n * Start slow, speed up, and then slow down again.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function inAndOut(t) {\n    return 3 * t * t - 2 * t * t * t;\n}\n/**\n * Maintain a constant speed over time.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function linear(t) {\n    return t;\n}\n/**\n * Start slow, speed up, and at the very end slow down again.  This has the\n * same general behavior as {@link module:ol/easing~inAndOut}, but the final\n * slowdown is delayed.\n * @param {number} t Input between 0 and 1.\n * @return {number} Output between 0 and 1.\n * @api\n */\nexport function upAndDown(t) {\n    if (t < 0.5) {\n        return inAndOut(2 * t);\n    }\n    else {\n        return 1 - inAndOut(2 * (t - 0.5));\n    }\n}\n//# sourceMappingURL=easing.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/Rotate\n */\nimport Control from './Control.js';\nimport { CLASS_CONTROL, CLASS_HIDDEN, CLASS_UNSELECTABLE } from '../css.js';\nimport { easeOut } from '../easing.js';\nimport EventType from '../events/EventType.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-rotate'] CSS class name.\n * @property {string|HTMLElement} [label='⇧'] Text label to use for the rotate button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string} [tipLabel='Reset rotation'] Text label to use for the rotate tip.\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {boolean} [autoHide=true] Hide the control when rotation is 0.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when the control should\n * be re-rendered. This is called in a `requestAnimationFrame` callback.\n * @property {function()} [resetNorth] Function called when the control is clicked.\n * This will override the default `resetNorth`.\n * @property {HTMLElement|string} [target] Specify a target if you want the control to be\n * rendered outside of the map's viewport.\n */\n/**\n * @classdesc\n * A button control to reset rotation to 0.\n * To style this control use css selector `.ol-rotate`. A `.ol-hidden` css\n * selector is added to the button when the rotation is 0.\n *\n * @api\n */\nvar Rotate = /** @class */ (function (_super) {\n    __extends(Rotate, _super);\n    /**\n     * @param {Options=} opt_options Rotate options.\n     */\n    function Rotate(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            element: document.createElement('div'),\n            render: options.render || render,\n            target: options.target\n        }) || this;\n        var className = options.className !== undefined ? options.className : 'ol-rotate';\n        var label = options.label !== undefined ? options.label : '\\u21E7';\n        /**\n         * @type {HTMLElement}\n         * @private\n         */\n        _this.label_ = null;\n        if (typeof label === 'string') {\n            _this.label_ = document.createElement('span');\n            _this.label_.className = 'ol-compass';\n            _this.label_.textContent = label;\n        }\n        else {\n            _this.label_ = label;\n            _this.label_.classList.add('ol-compass');\n        }\n        var tipLabel = options.tipLabel ? options.tipLabel : 'Reset rotation';\n        var button = document.createElement('button');\n        button.className = className + '-reset';\n        button.setAttribute('type', 'button');\n        button.title = tipLabel;\n        button.appendChild(_this.label_);\n        button.addEventListener(EventType.CLICK, _this.handleClick_.bind(_this), false);\n        var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;\n        var element = _this.element;\n        element.className = cssClasses;\n        element.appendChild(button);\n        _this.callResetNorth_ = options.resetNorth ? options.resetNorth : undefined;\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        /**\n         * @type {boolean}\n         * @private\n         */\n        _this.autoHide_ = options.autoHide !== undefined ? options.autoHide : true;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.rotation_ = undefined;\n        if (_this.autoHide_) {\n            _this.element.classList.add(CLASS_HIDDEN);\n        }\n        return _this;\n    }\n    /**\n     * @param {MouseEvent} event The event to handle\n     * @private\n     */\n    Rotate.prototype.handleClick_ = function (event) {\n        event.preventDefault();\n        if (this.callResetNorth_ !== undefined) {\n            this.callResetNorth_();\n        }\n        else {\n            this.resetNorth_();\n        }\n    };\n    /**\n     * @private\n     */\n    Rotate.prototype.resetNorth_ = function () {\n        var map = this.getMap();\n        var view = map.getView();\n        if (!view) {\n            // the map does not have a view, so we can't act\n            // upon it\n            return;\n        }\n        var rotation = view.getRotation();\n        if (rotation !== undefined) {\n            if (this.duration_ > 0 && rotation % (2 * Math.PI) !== 0) {\n                view.animate({\n                    rotation: 0,\n                    duration: this.duration_,\n                    easing: easeOut\n                });\n            }\n            else {\n                view.setRotation(0);\n            }\n        }\n    };\n    return Rotate;\n}(Control));\n/**\n * Update the rotate control element.\n * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n * @this {Rotate}\n */\nexport function render(mapEvent) {\n    var frameState = mapEvent.frameState;\n    if (!frameState) {\n        return;\n    }\n    var rotation = frameState.viewState.rotation;\n    if (rotation != this.rotation_) {\n        var transform = 'rotate(' + rotation + 'rad)';\n        if (this.autoHide_) {\n            var contains = this.element.classList.contains(CLASS_HIDDEN);\n            if (!contains && rotation === 0) {\n                this.element.classList.add(CLASS_HIDDEN);\n            }\n            else if (contains && rotation !== 0) {\n                this.element.classList.remove(CLASS_HIDDEN);\n            }\n        }\n        this.label_.style.transform = transform;\n    }\n    this.rotation_ = rotation;\n}\nexport default Rotate;\n//# sourceMappingURL=Rotate.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/AssertionError\n */\nimport { VERSION } from './util.js';\n/**\n * Error object thrown when an assertion failed. This is an ECMA-262 Error,\n * extended with a `code` property.\n * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error.\n */\nvar AssertionError = /** @class */ (function (_super) {\n    __extends(AssertionError, _super);\n    /**\n     * @param {number} code Error code.\n     */\n    function AssertionError(code) {\n        var _this = this;\n        var path = VERSION === 'latest' ? VERSION : 'v' + VERSION.split('-')[0];\n        var message = 'Assertion failed. See https://openlayers.org/en/' + path +\n            '/doc/errors/#' + code + ' for details.';\n        _this = _super.call(this, message) || this;\n        /**\n         * Error code. The meaning of the code can be found on\n         * https://openlayers.org/en/latest/doc/errors/ (replace `latest` with\n         * the version found in the OpenLayers script's header comment if a version\n         * other than the latest is used).\n         * @type {number}\n         * @api\n         */\n        _this.code = code;\n        /**\n         * @type {string}\n         */\n        _this.name = 'AssertionError';\n        // Re-assign message, see https://github.com/Rich-Harris/buble/issues/40\n        _this.message = message;\n        return _this;\n    }\n    return AssertionError;\n}(Error));\nexport default AssertionError;\n//# sourceMappingURL=AssertionError.js.map","/**\n * @module ol/asserts\n */\nimport AssertionError from './AssertionError.js';\n/**\n * @param {*} assertion Assertion we expected to be truthy.\n * @param {number} errorCode Error code.\n */\nexport function assert(assertion, errorCode) {\n    if (!assertion) {\n        throw new AssertionError(errorCode);\n    }\n}\n//# sourceMappingURL=asserts.js.map","/**\n * @module ol/math\n */\n/**\n * Takes a number and clamps it to within the provided bounds.\n * @param {number} value The input number.\n * @param {number} min The minimum value to return.\n * @param {number} max The maximum value to return.\n * @return {number} The input number if it is within bounds, or the nearest\n *     number within the bounds.\n */\nexport function clamp(value, min, max) {\n    return Math.min(Math.max(value, min), max);\n}\n/**\n * Return the hyperbolic cosine of a given number. The method will use the\n * native `Math.cosh` function if it is available, otherwise the hyperbolic\n * cosine will be calculated via the reference implementation of the Mozilla\n * developer network.\n *\n * @param {number} x X.\n * @return {number} Hyperbolic cosine of x.\n */\nexport var cosh = (function () {\n    // Wrapped in a iife, to save the overhead of checking for the native\n    // implementation on every invocation.\n    var cosh;\n    if ('cosh' in Math) {\n        // The environment supports the native Math.cosh function, use it…\n        cosh = Math.cosh;\n    }\n    else {\n        // … else, use the reference implementation of MDN:\n        cosh = function (x) {\n            var y = /** @type {Math} */ (Math).exp(x);\n            return (y + 1 / y) / 2;\n        };\n    }\n    return cosh;\n}());\n/**\n * Returns the square of the closest distance between the point (x, y) and the\n * line segment (x1, y1) to (x2, y2).\n * @param {number} x X.\n * @param {number} y Y.\n * @param {number} x1 X1.\n * @param {number} y1 Y1.\n * @param {number} x2 X2.\n * @param {number} y2 Y2.\n * @return {number} Squared distance.\n */\nexport function squaredSegmentDistance(x, y, x1, y1, x2, y2) {\n    var dx = x2 - x1;\n    var dy = y2 - y1;\n    if (dx !== 0 || dy !== 0) {\n        var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);\n        if (t > 1) {\n            x1 = x2;\n            y1 = y2;\n        }\n        else if (t > 0) {\n            x1 += dx * t;\n            y1 += dy * t;\n        }\n    }\n    return squaredDistance(x, y, x1, y1);\n}\n/**\n * Returns the square of the distance between the points (x1, y1) and (x2, y2).\n * @param {number} x1 X1.\n * @param {number} y1 Y1.\n * @param {number} x2 X2.\n * @param {number} y2 Y2.\n * @return {number} Squared distance.\n */\nexport function squaredDistance(x1, y1, x2, y2) {\n    var dx = x2 - x1;\n    var dy = y2 - y1;\n    return dx * dx + dy * dy;\n}\n/**\n * Solves system of linear equations using Gaussian elimination method.\n *\n * @param {Array<Array<number>>} mat Augmented matrix (n x n + 1 column)\n *                                     in row-major order.\n * @return {Array<number>} The resulting vector.\n */\nexport function solveLinearSystem(mat) {\n    var n = mat.length;\n    for (var i = 0; i < n; i++) {\n        // Find max in the i-th column (ignoring i - 1 first rows)\n        var maxRow = i;\n        var maxEl = Math.abs(mat[i][i]);\n        for (var r = i + 1; r < n; r++) {\n            var absValue = Math.abs(mat[r][i]);\n            if (absValue > maxEl) {\n                maxEl = absValue;\n                maxRow = r;\n            }\n        }\n        if (maxEl === 0) {\n            return null; // matrix is singular\n        }\n        // Swap max row with i-th (current) row\n        var tmp = mat[maxRow];\n        mat[maxRow] = mat[i];\n        mat[i] = tmp;\n        // Subtract the i-th row to make all the remaining rows 0 in the i-th column\n        for (var j = i + 1; j < n; j++) {\n            var coef = -mat[j][i] / mat[i][i];\n            for (var k = i; k < n + 1; k++) {\n                if (i == k) {\n                    mat[j][k] = 0;\n                }\n                else {\n                    mat[j][k] += coef * mat[i][k];\n                }\n            }\n        }\n    }\n    // Solve Ax=b for upper triangular matrix A (mat)\n    var x = new Array(n);\n    for (var l = n - 1; l >= 0; l--) {\n        x[l] = mat[l][n] / mat[l][l];\n        for (var m = l - 1; m >= 0; m--) {\n            mat[m][n] -= mat[m][l] * x[l];\n        }\n    }\n    return x;\n}\n/**\n * Converts radians to to degrees.\n *\n * @param {number} angleInRadians Angle in radians.\n * @return {number} Angle in degrees.\n */\nexport function toDegrees(angleInRadians) {\n    return angleInRadians * 180 / Math.PI;\n}\n/**\n * Converts degrees to radians.\n *\n * @param {number} angleInDegrees Angle in degrees.\n * @return {number} Angle in radians.\n */\nexport function toRadians(angleInDegrees) {\n    return angleInDegrees * Math.PI / 180;\n}\n/**\n * Returns the modulo of a / b, depending on the sign of b.\n *\n * @param {number} a Dividend.\n * @param {number} b Divisor.\n * @return {number} Modulo.\n */\nexport function modulo(a, b) {\n    var r = a % b;\n    return r * b < 0 ? r + b : r;\n}\n/**\n * Calculates the linearly interpolated value of x between a and b.\n *\n * @param {number} a Number\n * @param {number} b Number\n * @param {number} x Value to be interpolated.\n * @return {number} Interpolated value.\n */\nexport function lerp(a, b, x) {\n    return a + x * (b - a);\n}\n//# sourceMappingURL=math.js.map","/**\n * @module ol/geom/GeometryType\n */\n/**\n * The geometry type. One of `'Point'`, `'LineString'`, `'LinearRing'`,\n * `'Polygon'`, `'MultiPoint'`, `'MultiLineString'`, `'MultiPolygon'`,\n * `'GeometryCollection'`, `'Circle'`.\n * @enum {string}\n */\nexport default {\n    POINT: 'Point',\n    LINE_STRING: 'LineString',\n    LINEAR_RING: 'LinearRing',\n    POLYGON: 'Polygon',\n    MULTI_POINT: 'MultiPoint',\n    MULTI_LINE_STRING: 'MultiLineString',\n    MULTI_POLYGON: 'MultiPolygon',\n    GEOMETRY_COLLECTION: 'GeometryCollection',\n    CIRCLE: 'Circle'\n};\n//# sourceMappingURL=GeometryType.js.map","/**\n * @module ol/sphere\n */\nimport { toRadians, toDegrees } from './math.js';\nimport GeometryType from './geom/GeometryType.js';\n/**\n * Object literal with options for the {@link getLength} or {@link getArea}\n * functions.\n * @typedef {Object} SphereMetricOptions\n * @property {import(\"./proj.js\").ProjectionLike} [projection='EPSG:3857']\n * Projection of the  geometry.  By default, the geometry is assumed to be in\n * Web Mercator.\n * @property {number} [radius=6371008.8] Sphere radius.  By default, the\n * [mean Earth radius](https://en.wikipedia.org/wiki/Earth_radius#Mean_radius)\n * for the WGS84 ellipsoid is used.\n */\n/**\n * The mean Earth radius (1/3 * (2a + b)) for the WGS84 ellipsoid.\n * https://en.wikipedia.org/wiki/Earth_radius#Mean_radius\n * @type {number}\n */\nexport var DEFAULT_RADIUS = 6371008.8;\n/**\n * Get the great circle distance (in meters) between two geographic coordinates.\n * @param {Array} c1 Starting coordinate.\n * @param {Array} c2 Ending coordinate.\n * @param {number=} opt_radius The sphere radius to use.  Defaults to the Earth's\n *     mean radius using the WGS84 ellipsoid.\n * @return {number} The great circle distance between the points (in meters).\n * @api\n */\nexport function getDistance(c1, c2, opt_radius) {\n    var radius = opt_radius || DEFAULT_RADIUS;\n    var lat1 = toRadians(c1[1]);\n    var lat2 = toRadians(c2[1]);\n    var deltaLatBy2 = (lat2 - lat1) / 2;\n    var deltaLonBy2 = toRadians(c2[0] - c1[0]) / 2;\n    var a = Math.sin(deltaLatBy2) * Math.sin(deltaLatBy2) +\n        Math.sin(deltaLonBy2) * Math.sin(deltaLonBy2) *\n            Math.cos(lat1) * Math.cos(lat2);\n    return 2 * radius * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));\n}\n/**\n * Get the cumulative great circle length of linestring coordinates (geographic).\n * @param {Array} coordinates Linestring coordinates.\n * @param {number} radius The sphere radius to use.\n * @return {number} The length (in meters).\n */\nfunction getLengthInternal(coordinates, radius) {\n    var length = 0;\n    for (var i = 0, ii = coordinates.length; i < ii - 1; ++i) {\n        length += getDistance(coordinates[i], coordinates[i + 1], radius);\n    }\n    return length;\n}\n/**\n * Get the spherical length of a geometry.  This length is the sum of the\n * great circle distances between coordinates.  For polygons, the length is\n * the sum of all rings.  For points, the length is zero.  For multi-part\n * geometries, the length is the sum of the length of each part.\n * @param {import(\"./geom/Geometry.js\").default} geometry A geometry.\n * @param {SphereMetricOptions=} opt_options Options for the\n * length calculation.  By default, geometries are assumed to be in 'EPSG:3857'.\n * You can change this by providing a `projection` option.\n * @return {number} The spherical length (in meters).\n * @api\n */\nexport function getLength(geometry, opt_options) {\n    var options = opt_options || {};\n    var radius = options.radius || DEFAULT_RADIUS;\n    var projection = options.projection || 'EPSG:3857';\n    var type = geometry.getType();\n    if (type !== GeometryType.GEOMETRY_COLLECTION) {\n        geometry = geometry.clone().transform(projection, 'EPSG:4326');\n    }\n    var length = 0;\n    var coordinates, coords, i, ii, j, jj;\n    switch (type) {\n        case GeometryType.POINT:\n        case GeometryType.MULTI_POINT: {\n            break;\n        }\n        case GeometryType.LINE_STRING:\n        case GeometryType.LINEAR_RING: {\n            coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n            length = getLengthInternal(coordinates, radius);\n            break;\n        }\n        case GeometryType.MULTI_LINE_STRING:\n        case GeometryType.POLYGON: {\n            coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n            for (i = 0, ii = coordinates.length; i < ii; ++i) {\n                length += getLengthInternal(coordinates[i], radius);\n            }\n            break;\n        }\n        case GeometryType.MULTI_POLYGON: {\n            coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n            for (i = 0, ii = coordinates.length; i < ii; ++i) {\n                coords = coordinates[i];\n                for (j = 0, jj = coords.length; j < jj; ++j) {\n                    length += getLengthInternal(coords[j], radius);\n                }\n            }\n            break;\n        }\n        case GeometryType.GEOMETRY_COLLECTION: {\n            var geometries = /** @type {import(\"./geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n            for (i = 0, ii = geometries.length; i < ii; ++i) {\n                length += getLength(geometries[i], opt_options);\n            }\n            break;\n        }\n        default: {\n            throw new Error('Unsupported geometry type: ' + type);\n        }\n    }\n    return length;\n}\n/**\n * Returns the spherical area for a list of coordinates.\n *\n * [Reference](https://trs-new.jpl.nasa.gov/handle/2014/40409)\n * Robert. G. Chamberlain and William H. Duquette, \"Some Algorithms for\n * Polygons on a Sphere\", JPL Publication 07-03, Jet Propulsion\n * Laboratory, Pasadena, CA, June 2007\n *\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates List of coordinates of a linear\n * ring. If the ring is oriented clockwise, the area will be positive,\n * otherwise it will be negative.\n * @param {number} radius The sphere radius.\n * @return {number} Area (in square meters).\n */\nfunction getAreaInternal(coordinates, radius) {\n    var area = 0;\n    var len = coordinates.length;\n    var x1 = coordinates[len - 1][0];\n    var y1 = coordinates[len - 1][1];\n    for (var i = 0; i < len; i++) {\n        var x2 = coordinates[i][0];\n        var y2 = coordinates[i][1];\n        area += toRadians(x2 - x1) *\n            (2 + Math.sin(toRadians(y1)) +\n                Math.sin(toRadians(y2)));\n        x1 = x2;\n        y1 = y2;\n    }\n    return area * radius * radius / 2.0;\n}\n/**\n * Get the spherical area of a geometry.  This is the area (in meters) assuming\n * that polygon edges are segments of great circles on a sphere.\n * @param {import(\"./geom/Geometry.js\").default} geometry A geometry.\n * @param {SphereMetricOptions=} opt_options Options for the area\n *     calculation.  By default, geometries are assumed to be in 'EPSG:3857'.\n *     You can change this by providing a `projection` option.\n * @return {number} The spherical area (in square meters).\n * @api\n */\nexport function getArea(geometry, opt_options) {\n    var options = opt_options || {};\n    var radius = options.radius || DEFAULT_RADIUS;\n    var projection = options.projection || 'EPSG:3857';\n    var type = geometry.getType();\n    if (type !== GeometryType.GEOMETRY_COLLECTION) {\n        geometry = geometry.clone().transform(projection, 'EPSG:4326');\n    }\n    var area = 0;\n    var coordinates, coords, i, ii, j, jj;\n    switch (type) {\n        case GeometryType.POINT:\n        case GeometryType.MULTI_POINT:\n        case GeometryType.LINE_STRING:\n        case GeometryType.MULTI_LINE_STRING:\n        case GeometryType.LINEAR_RING: {\n            break;\n        }\n        case GeometryType.POLYGON: {\n            coordinates = /** @type {import(\"./geom/Polygon.js\").default} */ (geometry).getCoordinates();\n            area = Math.abs(getAreaInternal(coordinates[0], radius));\n            for (i = 1, ii = coordinates.length; i < ii; ++i) {\n                area -= Math.abs(getAreaInternal(coordinates[i], radius));\n            }\n            break;\n        }\n        case GeometryType.MULTI_POLYGON: {\n            coordinates = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometry).getCoordinates();\n            for (i = 0, ii = coordinates.length; i < ii; ++i) {\n                coords = coordinates[i];\n                area += Math.abs(getAreaInternal(coords[0], radius));\n                for (j = 1, jj = coords.length; j < jj; ++j) {\n                    area -= Math.abs(getAreaInternal(coords[j], radius));\n                }\n            }\n            break;\n        }\n        case GeometryType.GEOMETRY_COLLECTION: {\n            var geometries = /** @type {import(\"./geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n            for (i = 0, ii = geometries.length; i < ii; ++i) {\n                area += getArea(geometries[i], opt_options);\n            }\n            break;\n        }\n        default: {\n            throw new Error('Unsupported geometry type: ' + type);\n        }\n    }\n    return area;\n}\n/**\n * Returns the coordinate at the given distance and bearing from `c1`.\n *\n * @param {import(\"./coordinate.js\").Coordinate} c1 The origin point (`[lon, lat]` in degrees).\n * @param {number} distance The great-circle distance between the origin\n *     point and the target point.\n * @param {number} bearing The bearing (in radians).\n * @param {number=} opt_radius The sphere radius to use.  Defaults to the Earth's\n *     mean radius using the WGS84 ellipsoid.\n * @return {import(\"./coordinate.js\").Coordinate} The target point.\n */\nexport function offset(c1, distance, bearing, opt_radius) {\n    var radius = opt_radius || DEFAULT_RADIUS;\n    var lat1 = toRadians(c1[1]);\n    var lon1 = toRadians(c1[0]);\n    var dByR = distance / radius;\n    var lat = Math.asin(Math.sin(lat1) * Math.cos(dByR) +\n        Math.cos(lat1) * Math.sin(dByR) * Math.cos(bearing));\n    var lon = lon1 + Math.atan2(Math.sin(bearing) * Math.sin(dByR) * Math.cos(lat1), Math.cos(dByR) - Math.sin(lat1) * Math.sin(lat));\n    return [toDegrees(lon), toDegrees(lat)];\n}\n//# sourceMappingURL=sphere.js.map","/**\n * @module ol/extent/Corner\n */\n/**\n * Extent corner.\n * @enum {string}\n */\nexport default {\n    BOTTOM_LEFT: 'bottom-left',\n    BOTTOM_RIGHT: 'bottom-right',\n    TOP_LEFT: 'top-left',\n    TOP_RIGHT: 'top-right'\n};\n//# sourceMappingURL=Corner.js.map","/**\n * @module ol/extent/Relationship\n */\n/**\n * Relationship to an extent.\n * @enum {number}\n */\nexport default {\n    UNKNOWN: 0,\n    INTERSECTING: 1,\n    ABOVE: 2,\n    RIGHT: 4,\n    BELOW: 8,\n    LEFT: 16\n};\n//# sourceMappingURL=Relationship.js.map","/**\n * @module ol/extent\n */\nimport { assert } from './asserts.js';\nimport Corner from './extent/Corner.js';\nimport Relationship from './extent/Relationship.js';\n/**\n * An array of numbers representing an extent: `[minx, miny, maxx, maxy]`.\n * @typedef {Array<number>} Extent\n * @api\n */\n/**\n * Build an extent that includes all given coordinates.\n *\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @return {Extent} Bounding extent.\n * @api\n */\nexport function boundingExtent(coordinates) {\n    var extent = createEmpty();\n    for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n        extendCoordinate(extent, coordinates[i]);\n    }\n    return extent;\n}\n/**\n * @param {Array<number>} xs Xs.\n * @param {Array<number>} ys Ys.\n * @param {Extent=} opt_extent Destination extent.\n * @private\n * @return {Extent} Extent.\n */\nfunction _boundingExtentXYs(xs, ys, opt_extent) {\n    var minX = Math.min.apply(null, xs);\n    var minY = Math.min.apply(null, ys);\n    var maxX = Math.max.apply(null, xs);\n    var maxY = Math.max.apply(null, ys);\n    return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n}\n/**\n * Return extent increased by the provided value.\n * @param {Extent} extent Extent.\n * @param {number} value The amount by which the extent should be buffered.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n * @api\n */\nexport function buffer(extent, value, opt_extent) {\n    if (opt_extent) {\n        opt_extent[0] = extent[0] - value;\n        opt_extent[1] = extent[1] - value;\n        opt_extent[2] = extent[2] + value;\n        opt_extent[3] = extent[3] + value;\n        return opt_extent;\n    }\n    else {\n        return [\n            extent[0] - value,\n            extent[1] - value,\n            extent[2] + value,\n            extent[3] + value\n        ];\n    }\n}\n/**\n * Creates a clone of an extent.\n *\n * @param {Extent} extent Extent to clone.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} The clone.\n */\nexport function clone(extent, opt_extent) {\n    if (opt_extent) {\n        opt_extent[0] = extent[0];\n        opt_extent[1] = extent[1];\n        opt_extent[2] = extent[2];\n        opt_extent[3] = extent[3];\n        return opt_extent;\n    }\n    else {\n        return extent.slice();\n    }\n}\n/**\n * @param {Extent} extent Extent.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {number} Closest squared distance.\n */\nexport function closestSquaredDistanceXY(extent, x, y) {\n    var dx, dy;\n    if (x < extent[0]) {\n        dx = extent[0] - x;\n    }\n    else if (extent[2] < x) {\n        dx = x - extent[2];\n    }\n    else {\n        dx = 0;\n    }\n    if (y < extent[1]) {\n        dy = extent[1] - y;\n    }\n    else if (extent[3] < y) {\n        dy = y - extent[3];\n    }\n    else {\n        dy = 0;\n    }\n    return dx * dx + dy * dy;\n}\n/**\n * Check if the passed coordinate is contained or on the edge of the extent.\n *\n * @param {Extent} extent Extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @return {boolean} The coordinate is contained in the extent.\n * @api\n */\nexport function containsCoordinate(extent, coordinate) {\n    return containsXY(extent, coordinate[0], coordinate[1]);\n}\n/**\n * Check if one extent contains another.\n *\n * An extent is deemed contained if it lies completely within the other extent,\n * including if they share one or more edges.\n *\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {boolean} The second extent is contained by or on the edge of the\n *     first.\n * @api\n */\nexport function containsExtent(extent1, extent2) {\n    return extent1[0] <= extent2[0] && extent2[2] <= extent1[2] &&\n        extent1[1] <= extent2[1] && extent2[3] <= extent1[3];\n}\n/**\n * Check if the passed coordinate is contained or on the edge of the extent.\n *\n * @param {Extent} extent Extent.\n * @param {number} x X coordinate.\n * @param {number} y Y coordinate.\n * @return {boolean} The x, y values are contained in the extent.\n * @api\n */\nexport function containsXY(extent, x, y) {\n    return extent[0] <= x && x <= extent[2] && extent[1] <= y && y <= extent[3];\n}\n/**\n * Get the relationship between a coordinate and extent.\n * @param {Extent} extent The extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate The coordinate.\n * @return {Relationship} The relationship (bitwise compare with\n *     import(\"./extent/Relationship.js\").Relationship).\n */\nexport function coordinateRelationship(extent, coordinate) {\n    var minX = extent[0];\n    var minY = extent[1];\n    var maxX = extent[2];\n    var maxY = extent[3];\n    var x = coordinate[0];\n    var y = coordinate[1];\n    var relationship = Relationship.UNKNOWN;\n    if (x < minX) {\n        relationship = relationship | Relationship.LEFT;\n    }\n    else if (x > maxX) {\n        relationship = relationship | Relationship.RIGHT;\n    }\n    if (y < minY) {\n        relationship = relationship | Relationship.BELOW;\n    }\n    else if (y > maxY) {\n        relationship = relationship | Relationship.ABOVE;\n    }\n    if (relationship === Relationship.UNKNOWN) {\n        relationship = Relationship.INTERSECTING;\n    }\n    return relationship;\n}\n/**\n * Create an empty extent.\n * @return {Extent} Empty extent.\n * @api\n */\nexport function createEmpty() {\n    return [Infinity, Infinity, -Infinity, -Infinity];\n}\n/**\n * Create a new extent or update the provided extent.\n * @param {number} minX Minimum X.\n * @param {number} minY Minimum Y.\n * @param {number} maxX Maximum X.\n * @param {number} maxY Maximum Y.\n * @param {Extent=} opt_extent Destination extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdate(minX, minY, maxX, maxY, opt_extent) {\n    if (opt_extent) {\n        opt_extent[0] = minX;\n        opt_extent[1] = minY;\n        opt_extent[2] = maxX;\n        opt_extent[3] = maxY;\n        return opt_extent;\n    }\n    else {\n        return [minX, minY, maxX, maxY];\n    }\n}\n/**\n * Create a new empty extent or make the provided one empty.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateEmpty(opt_extent) {\n    return createOrUpdate(Infinity, Infinity, -Infinity, -Infinity, opt_extent);\n}\n/**\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromCoordinate(coordinate, opt_extent) {\n    var x = coordinate[0];\n    var y = coordinate[1];\n    return createOrUpdate(x, y, x, y, opt_extent);\n}\n/**\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromCoordinates(coordinates, opt_extent) {\n    var extent = createOrUpdateEmpty(opt_extent);\n    return extendCoordinates(extent, coordinates);\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromFlatCoordinates(flatCoordinates, offset, end, stride, opt_extent) {\n    var extent = createOrUpdateEmpty(opt_extent);\n    return extendFlatCoordinates(extent, flatCoordinates, offset, end, stride);\n}\n/**\n * @param {Array<Array<import(\"./coordinate.js\").Coordinate>>} rings Rings.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function createOrUpdateFromRings(rings, opt_extent) {\n    var extent = createOrUpdateEmpty(opt_extent);\n    return extendRings(extent, rings);\n}\n/**\n * Determine if two extents are equivalent.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {boolean} The two extents are equivalent.\n * @api\n */\nexport function equals(extent1, extent2) {\n    return extent1[0] == extent2[0] && extent1[2] == extent2[2] &&\n        extent1[1] == extent2[1] && extent1[3] == extent2[3];\n}\n/**\n * Determine if two extents are approximately equivalent.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @param {number} tolerance Tolerance in extent coordinate units.\n * @return {boolean} The two extents differ by less than the tolerance.\n */\nexport function approximatelyEquals(extent1, extent2, tolerance) {\n    return Math.abs(extent1[0] - extent2[0]) < tolerance && Math.abs(extent1[2] - extent2[2]) < tolerance &&\n        Math.abs(extent1[1] - extent2[1]) < tolerance && Math.abs(extent1[3] - extent2[3]) < tolerance;\n}\n/**\n * Modify an extent to include another extent.\n * @param {Extent} extent1 The extent to be modified.\n * @param {Extent} extent2 The extent that will be included in the first.\n * @return {Extent} A reference to the first (extended) extent.\n * @api\n */\nexport function extend(extent1, extent2) {\n    if (extent2[0] < extent1[0]) {\n        extent1[0] = extent2[0];\n    }\n    if (extent2[2] > extent1[2]) {\n        extent1[2] = extent2[2];\n    }\n    if (extent2[1] < extent1[1]) {\n        extent1[1] = extent2[1];\n    }\n    if (extent2[3] > extent1[3]) {\n        extent1[3] = extent2[3];\n    }\n    return extent1;\n}\n/**\n * @param {Extent} extent Extent.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n */\nexport function extendCoordinate(extent, coordinate) {\n    if (coordinate[0] < extent[0]) {\n        extent[0] = coordinate[0];\n    }\n    if (coordinate[0] > extent[2]) {\n        extent[2] = coordinate[0];\n    }\n    if (coordinate[1] < extent[1]) {\n        extent[1] = coordinate[1];\n    }\n    if (coordinate[1] > extent[3]) {\n        extent[3] = coordinate[1];\n    }\n}\n/**\n * @param {Extent} extent Extent.\n * @param {Array<import(\"./coordinate.js\").Coordinate>} coordinates Coordinates.\n * @return {Extent} Extent.\n */\nexport function extendCoordinates(extent, coordinates) {\n    for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n        extendCoordinate(extent, coordinates[i]);\n    }\n    return extent;\n}\n/**\n * @param {Extent} extent Extent.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {Extent} Extent.\n */\nexport function extendFlatCoordinates(extent, flatCoordinates, offset, end, stride) {\n    for (; offset < end; offset += stride) {\n        extendXY(extent, flatCoordinates[offset], flatCoordinates[offset + 1]);\n    }\n    return extent;\n}\n/**\n * @param {Extent} extent Extent.\n * @param {Array<Array<import(\"./coordinate.js\").Coordinate>>} rings Rings.\n * @return {Extent} Extent.\n */\nexport function extendRings(extent, rings) {\n    for (var i = 0, ii = rings.length; i < ii; ++i) {\n        extendCoordinates(extent, rings[i]);\n    }\n    return extent;\n}\n/**\n * @param {Extent} extent Extent.\n * @param {number} x X.\n * @param {number} y Y.\n */\nexport function extendXY(extent, x, y) {\n    extent[0] = Math.min(extent[0], x);\n    extent[1] = Math.min(extent[1], y);\n    extent[2] = Math.max(extent[2], x);\n    extent[3] = Math.max(extent[3], y);\n}\n/**\n * This function calls `callback` for each corner of the extent. If the\n * callback returns a truthy value the function returns that value\n * immediately. Otherwise the function returns `false`.\n * @param {Extent} extent Extent.\n * @param {function(import(\"./coordinate.js\").Coordinate): S} callback Callback.\n * @return {S|boolean} Value.\n * @template S\n */\nexport function forEachCorner(extent, callback) {\n    var val;\n    val = callback(getBottomLeft(extent));\n    if (val) {\n        return val;\n    }\n    val = callback(getBottomRight(extent));\n    if (val) {\n        return val;\n    }\n    val = callback(getTopRight(extent));\n    if (val) {\n        return val;\n    }\n    val = callback(getTopLeft(extent));\n    if (val) {\n        return val;\n    }\n    return false;\n}\n/**\n * Get the size of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Area.\n * @api\n */\nexport function getArea(extent) {\n    var area = 0;\n    if (!isEmpty(extent)) {\n        area = getWidth(extent) * getHeight(extent);\n    }\n    return area;\n}\n/**\n * Get the bottom left coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Bottom left coordinate.\n * @api\n */\nexport function getBottomLeft(extent) {\n    return [extent[0], extent[1]];\n}\n/**\n * Get the bottom right coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Bottom right coordinate.\n * @api\n */\nexport function getBottomRight(extent) {\n    return [extent[2], extent[1]];\n}\n/**\n * Get the center coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Center.\n * @api\n */\nexport function getCenter(extent) {\n    return [(extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2];\n}\n/**\n * Get a corner coordinate of an extent.\n * @param {Extent} extent Extent.\n * @param {Corner} corner Corner.\n * @return {import(\"./coordinate.js\").Coordinate} Corner coordinate.\n */\nexport function getCorner(extent, corner) {\n    var coordinate;\n    if (corner === Corner.BOTTOM_LEFT) {\n        coordinate = getBottomLeft(extent);\n    }\n    else if (corner === Corner.BOTTOM_RIGHT) {\n        coordinate = getBottomRight(extent);\n    }\n    else if (corner === Corner.TOP_LEFT) {\n        coordinate = getTopLeft(extent);\n    }\n    else if (corner === Corner.TOP_RIGHT) {\n        coordinate = getTopRight(extent);\n    }\n    else {\n        assert(false, 13); // Invalid corner\n    }\n    return coordinate;\n}\n/**\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {number} Enlarged area.\n */\nexport function getEnlargedArea(extent1, extent2) {\n    var minX = Math.min(extent1[0], extent2[0]);\n    var minY = Math.min(extent1[1], extent2[1]);\n    var maxX = Math.max(extent1[2], extent2[2]);\n    var maxY = Math.max(extent1[3], extent2[3]);\n    return (maxX - minX) * (maxY - minY);\n}\n/**\n * @param {import(\"./coordinate.js\").Coordinate} center Center.\n * @param {number} resolution Resolution.\n * @param {number} rotation Rotation.\n * @param {import(\"./size.js\").Size} size Size.\n * @param {Extent=} opt_extent Destination extent.\n * @return {Extent} Extent.\n */\nexport function getForViewAndSize(center, resolution, rotation, size, opt_extent) {\n    var dx = resolution * size[0] / 2;\n    var dy = resolution * size[1] / 2;\n    var cosRotation = Math.cos(rotation);\n    var sinRotation = Math.sin(rotation);\n    var xCos = dx * cosRotation;\n    var xSin = dx * sinRotation;\n    var yCos = dy * cosRotation;\n    var ySin = dy * sinRotation;\n    var x = center[0];\n    var y = center[1];\n    var x0 = x - xCos + ySin;\n    var x1 = x - xCos - ySin;\n    var x2 = x + xCos - ySin;\n    var x3 = x + xCos + ySin;\n    var y0 = y - xSin - yCos;\n    var y1 = y - xSin + yCos;\n    var y2 = y + xSin + yCos;\n    var y3 = y + xSin - yCos;\n    return createOrUpdate(Math.min(x0, x1, x2, x3), Math.min(y0, y1, y2, y3), Math.max(x0, x1, x2, x3), Math.max(y0, y1, y2, y3), opt_extent);\n}\n/**\n * Get the height of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Height.\n * @api\n */\nexport function getHeight(extent) {\n    return extent[3] - extent[1];\n}\n/**\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @return {number} Intersection area.\n */\nexport function getIntersectionArea(extent1, extent2) {\n    var intersection = getIntersection(extent1, extent2);\n    return getArea(intersection);\n}\n/**\n * Get the intersection of two extents.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent 2.\n * @param {Extent=} opt_extent Optional extent to populate with intersection.\n * @return {Extent} Intersecting extent.\n * @api\n */\nexport function getIntersection(extent1, extent2, opt_extent) {\n    var intersection = opt_extent ? opt_extent : createEmpty();\n    if (intersects(extent1, extent2)) {\n        if (extent1[0] > extent2[0]) {\n            intersection[0] = extent1[0];\n        }\n        else {\n            intersection[0] = extent2[0];\n        }\n        if (extent1[1] > extent2[1]) {\n            intersection[1] = extent1[1];\n        }\n        else {\n            intersection[1] = extent2[1];\n        }\n        if (extent1[2] < extent2[2]) {\n            intersection[2] = extent1[2];\n        }\n        else {\n            intersection[2] = extent2[2];\n        }\n        if (extent1[3] < extent2[3]) {\n            intersection[3] = extent1[3];\n        }\n        else {\n            intersection[3] = extent2[3];\n        }\n    }\n    else {\n        createOrUpdateEmpty(intersection);\n    }\n    return intersection;\n}\n/**\n * @param {Extent} extent Extent.\n * @return {number} Margin.\n */\nexport function getMargin(extent) {\n    return getWidth(extent) + getHeight(extent);\n}\n/**\n * Get the size (width, height) of an extent.\n * @param {Extent} extent The extent.\n * @return {import(\"./size.js\").Size} The extent size.\n * @api\n */\nexport function getSize(extent) {\n    return [extent[2] - extent[0], extent[3] - extent[1]];\n}\n/**\n * Get the top left coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Top left coordinate.\n * @api\n */\nexport function getTopLeft(extent) {\n    return [extent[0], extent[3]];\n}\n/**\n * Get the top right coordinate of an extent.\n * @param {Extent} extent Extent.\n * @return {import(\"./coordinate.js\").Coordinate} Top right coordinate.\n * @api\n */\nexport function getTopRight(extent) {\n    return [extent[2], extent[3]];\n}\n/**\n * Get the width of an extent.\n * @param {Extent} extent Extent.\n * @return {number} Width.\n * @api\n */\nexport function getWidth(extent) {\n    return extent[2] - extent[0];\n}\n/**\n * Determine if one extent intersects another.\n * @param {Extent} extent1 Extent 1.\n * @param {Extent} extent2 Extent.\n * @return {boolean} The two extents intersect.\n * @api\n */\nexport function intersects(extent1, extent2) {\n    return extent1[0] <= extent2[2] &&\n        extent1[2] >= extent2[0] &&\n        extent1[1] <= extent2[3] &&\n        extent1[3] >= extent2[1];\n}\n/**\n * Determine if an extent is empty.\n * @param {Extent} extent Extent.\n * @return {boolean} Is empty.\n * @api\n */\nexport function isEmpty(extent) {\n    return extent[2] < extent[0] || extent[3] < extent[1];\n}\n/**\n * @param {Extent} extent Extent.\n * @param {Extent=} opt_extent Extent.\n * @return {Extent} Extent.\n */\nexport function returnOrUpdate(extent, opt_extent) {\n    if (opt_extent) {\n        opt_extent[0] = extent[0];\n        opt_extent[1] = extent[1];\n        opt_extent[2] = extent[2];\n        opt_extent[3] = extent[3];\n        return opt_extent;\n    }\n    else {\n        return extent;\n    }\n}\n/**\n * @param {Extent} extent Extent.\n * @param {number} value Value.\n */\nexport function scaleFromCenter(extent, value) {\n    var deltaX = ((extent[2] - extent[0]) / 2) * (value - 1);\n    var deltaY = ((extent[3] - extent[1]) / 2) * (value - 1);\n    extent[0] -= deltaX;\n    extent[2] += deltaX;\n    extent[1] -= deltaY;\n    extent[3] += deltaY;\n}\n/**\n * Determine if the segment between two coordinates intersects (crosses,\n * touches, or is contained by) the provided extent.\n * @param {Extent} extent The extent.\n * @param {import(\"./coordinate.js\").Coordinate} start Segment start coordinate.\n * @param {import(\"./coordinate.js\").Coordinate} end Segment end coordinate.\n * @return {boolean} The segment intersects the extent.\n */\nexport function intersectsSegment(extent, start, end) {\n    var intersects = false;\n    var startRel = coordinateRelationship(extent, start);\n    var endRel = coordinateRelationship(extent, end);\n    if (startRel === Relationship.INTERSECTING ||\n        endRel === Relationship.INTERSECTING) {\n        intersects = true;\n    }\n    else {\n        var minX = extent[0];\n        var minY = extent[1];\n        var maxX = extent[2];\n        var maxY = extent[3];\n        var startX = start[0];\n        var startY = start[1];\n        var endX = end[0];\n        var endY = end[1];\n        var slope = (endY - startY) / (endX - startX);\n        var x = void 0, y = void 0;\n        if (!!(endRel & Relationship.ABOVE) &&\n            !(startRel & Relationship.ABOVE)) {\n            // potentially intersects top\n            x = endX - ((endY - maxY) / slope);\n            intersects = x >= minX && x <= maxX;\n        }\n        if (!intersects && !!(endRel & Relationship.RIGHT) &&\n            !(startRel & Relationship.RIGHT)) {\n            // potentially intersects right\n            y = endY - ((endX - maxX) * slope);\n            intersects = y >= minY && y <= maxY;\n        }\n        if (!intersects && !!(endRel & Relationship.BELOW) &&\n            !(startRel & Relationship.BELOW)) {\n            // potentially intersects bottom\n            x = endX - ((endY - minY) / slope);\n            intersects = x >= minX && x <= maxX;\n        }\n        if (!intersects && !!(endRel & Relationship.LEFT) &&\n            !(startRel & Relationship.LEFT)) {\n            // potentially intersects left\n            y = endY - ((endX - minX) * slope);\n            intersects = y >= minY && y <= maxY;\n        }\n    }\n    return intersects;\n}\n/**\n * Apply a transform function to the extent.\n * @param {Extent} extent Extent.\n * @param {import(\"./proj.js\").TransformFunction} transformFn Transform function.\n * Called with `[minX, minY, maxX, maxY]` extent coordinates.\n * @param {Extent=} opt_extent Destination extent.\n * @param {number=} opt_stops Number of stops per side used for the transform.\n * By default only the corners are used.\n * @return {Extent} Extent.\n * @api\n */\nexport function applyTransform(extent, transformFn, opt_extent, opt_stops) {\n    var coordinates = [];\n    if (opt_stops > 1) {\n        var width = extent[2] - extent[0];\n        var height = extent[3] - extent[1];\n        for (var i = 0; i < opt_stops; ++i) {\n            coordinates.push(extent[0] + width * i / opt_stops, extent[1], extent[2], extent[1] + height * i / opt_stops, extent[2] - width * i / opt_stops, extent[3], extent[0], extent[3] - height * i / opt_stops);\n        }\n    }\n    else {\n        coordinates = [\n            extent[0], extent[1],\n            extent[2], extent[1],\n            extent[2], extent[3],\n            extent[0], extent[3]\n        ];\n    }\n    transformFn(coordinates, coordinates, 2);\n    var xs = [];\n    var ys = [];\n    for (var i = 0, l = coordinates.length; i < l; i += 2) {\n        xs.push(coordinates[i]);\n        ys.push(coordinates[i + 1]);\n    }\n    return _boundingExtentXYs(xs, ys, opt_extent);\n}\n/**\n * Modifies the provided extent in-place to be within the real world\n * extent.\n *\n * @param {Extent} extent Extent.\n * @param {import(\"./proj/Projection.js\").default} projection Projection\n * @return {Extent} The extent within the real world extent.\n */\nexport function wrapX(extent, projection) {\n    var projectionExtent = projection.getExtent();\n    var center = getCenter(extent);\n    if (projection.canWrapX() && (center[0] < projectionExtent[0] || center[0] >= projectionExtent[2])) {\n        var worldWidth = getWidth(projectionExtent);\n        var worldsAway = Math.floor((center[0] - projectionExtent[0]) / worldWidth);\n        var offset = (worldsAway * worldWidth);\n        extent[0] -= offset;\n        extent[2] -= offset;\n    }\n    return extent;\n}\n//# sourceMappingURL=extent.js.map","/**\n * @module ol/proj/Units\n */\n/**\n * Projection units: `'degrees'`, `'ft'`, `'m'`, `'pixels'`, `'tile-pixels'` or\n * `'us-ft'`.\n * @enum {string}\n */\nvar Units = {\n    DEGREES: 'degrees',\n    FEET: 'ft',\n    METERS: 'm',\n    PIXELS: 'pixels',\n    TILE_PIXELS: 'tile-pixels',\n    USFEET: 'us-ft'\n};\n/**\n * Meters per unit lookup table.\n * @const\n * @type {Object<Units, number>}\n * @api\n */\nexport var METERS_PER_UNIT = {};\n// use the radius of the Normal sphere\nMETERS_PER_UNIT[Units.DEGREES] = 2 * Math.PI * 6370997 / 360;\nMETERS_PER_UNIT[Units.FEET] = 0.3048;\nMETERS_PER_UNIT[Units.METERS] = 1;\nMETERS_PER_UNIT[Units.USFEET] = 1200 / 3937;\nexport default Units;\n//# sourceMappingURL=Units.js.map","/**\n * @module ol/proj/Projection\n */\nimport { METERS_PER_UNIT } from './Units.js';\n/**\n * @typedef {Object} Options\n * @property {string} code The SRS identifier code, e.g. `EPSG:4326`.\n * @property {import(\"./Units.js\").default|string} [units] Units. Required unless a\n * proj4 projection is defined for `code`.\n * @property {import(\"../extent.js\").Extent} [extent] The validity extent for the SRS.\n * @property {string} [axisOrientation='enu'] The axis orientation as specified in Proj4.\n * @property {boolean} [global=false] Whether the projection is valid for the whole globe.\n * @property {number} [metersPerUnit] The meters per unit for the SRS.\n * If not provided, the `units` are used to get the meters per unit from the {@link module:ol/proj/Units~METERS_PER_UNIT}\n * lookup table.\n * @property {import(\"../extent.js\").Extent} [worldExtent] The world extent for the SRS.\n * @property {function(number, import(\"../coordinate.js\").Coordinate):number} [getPointResolution]\n * Function to determine resolution at a point. The function is called with a\n * `{number}` view resolution and an `{import(\"../coordinate.js\").Coordinate}` as arguments, and returns\n * the `{number}` resolution in projection units at the passed coordinate. If this is `undefined`,\n * the default {@link module:ol/proj#getPointResolution} function will be used.\n */\n/**\n * @classdesc\n * Projection definition class. One of these is created for each projection\n * supported in the application and stored in the {@link module:ol/proj} namespace.\n * You can use these in applications, but this is not required, as API params\n * and options use {@link module:ol/proj~ProjectionLike} which means the simple string\n * code will suffice.\n *\n * You can use {@link module:ol/proj~get} to retrieve the object for a particular\n * projection.\n *\n * The library includes definitions for `EPSG:4326` and `EPSG:3857`, together\n * with the following aliases:\n * * `EPSG:4326`: CRS:84, urn:ogc:def:crs:EPSG:6.6:4326,\n *     urn:ogc:def:crs:OGC:1.3:CRS84, urn:ogc:def:crs:OGC:2:84,\n *     http://www.opengis.net/gml/srs/epsg.xml#4326,\n *     urn:x-ogc:def:crs:EPSG:4326\n * * `EPSG:3857`: EPSG:102100, EPSG:102113, EPSG:900913,\n *     urn:ogc:def:crs:EPSG:6.18:3:3857,\n *     http://www.opengis.net/gml/srs/epsg.xml#3857\n *\n * If you use [proj4js](https://github.com/proj4js/proj4js), aliases can\n * be added using `proj4.defs()`. After all required projection definitions are\n * added, call the {@link module:ol/proj/proj4~register} function.\n *\n * @api\n */\nvar Projection = /** @class */ (function () {\n    /**\n     * @param {Options} options Projection options.\n     */\n    function Projection(options) {\n        /**\n         * @private\n         * @type {string}\n         */\n        this.code_ = options.code;\n        /**\n         * Units of projected coordinates. When set to `TILE_PIXELS`, a\n         * `this.extent_` and `this.worldExtent_` must be configured properly for each\n         * tile.\n         * @private\n         * @type {import(\"./Units.js\").default}\n         */\n        this.units_ = /** @type {import(\"./Units.js\").default} */ (options.units);\n        /**\n         * Validity extent of the projection in projected coordinates. For projections\n         * with `TILE_PIXELS` units, this is the extent of the tile in\n         * tile pixel space.\n         * @private\n         * @type {import(\"../extent.js\").Extent}\n         */\n        this.extent_ = options.extent !== undefined ? options.extent : null;\n        /**\n         * Extent of the world in EPSG:4326. For projections with\n         * `TILE_PIXELS` units, this is the extent of the tile in\n         * projected coordinate space.\n         * @private\n         * @type {import(\"../extent.js\").Extent}\n         */\n        this.worldExtent_ = options.worldExtent !== undefined ?\n            options.worldExtent : null;\n        /**\n         * @private\n         * @type {string}\n         */\n        this.axisOrientation_ = options.axisOrientation !== undefined ?\n            options.axisOrientation : 'enu';\n        /**\n         * @private\n         * @type {boolean}\n         */\n        this.global_ = options.global !== undefined ? options.global : false;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        this.canWrapX_ = !!(this.global_ && this.extent_);\n        /**\n         * @private\n         * @type {function(number, import(\"../coordinate.js\").Coordinate):number|undefined}\n         */\n        this.getPointResolutionFunc_ = options.getPointResolution;\n        /**\n         * @private\n         * @type {import(\"../tilegrid/TileGrid.js\").default}\n         */\n        this.defaultTileGrid_ = null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.metersPerUnit_ = options.metersPerUnit;\n    }\n    /**\n     * @return {boolean} The projection is suitable for wrapping the x-axis\n     */\n    Projection.prototype.canWrapX = function () {\n        return this.canWrapX_;\n    };\n    /**\n     * Get the code for this projection, e.g. 'EPSG:4326'.\n     * @return {string} Code.\n     * @api\n     */\n    Projection.prototype.getCode = function () {\n        return this.code_;\n    };\n    /**\n     * Get the validity extent for this projection.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     * @api\n     */\n    Projection.prototype.getExtent = function () {\n        return this.extent_;\n    };\n    /**\n     * Get the units of this projection.\n     * @return {import(\"./Units.js\").default} Units.\n     * @api\n     */\n    Projection.prototype.getUnits = function () {\n        return this.units_;\n    };\n    /**\n     * Get the amount of meters per unit of this projection.  If the projection is\n     * not configured with `metersPerUnit` or a units identifier, the return is\n     * `undefined`.\n     * @return {number|undefined} Meters.\n     * @api\n     */\n    Projection.prototype.getMetersPerUnit = function () {\n        return this.metersPerUnit_ || METERS_PER_UNIT[this.units_];\n    };\n    /**\n     * Get the world extent for this projection.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     * @api\n     */\n    Projection.prototype.getWorldExtent = function () {\n        return this.worldExtent_;\n    };\n    /**\n     * Get the axis orientation of this projection.\n     * Example values are:\n     * enu - the default easting, northing, elevation.\n     * neu - northing, easting, up - useful for \"lat/long\" geographic coordinates,\n     *     or south orientated transverse mercator.\n     * wnu - westing, northing, up - some planetary coordinate systems have\n     *     \"west positive\" coordinate systems\n     * @return {string} Axis orientation.\n     * @api\n     */\n    Projection.prototype.getAxisOrientation = function () {\n        return this.axisOrientation_;\n    };\n    /**\n     * Is this projection a global projection which spans the whole world?\n     * @return {boolean} Whether the projection is global.\n     * @api\n     */\n    Projection.prototype.isGlobal = function () {\n        return this.global_;\n    };\n    /**\n     * Set if the projection is a global projection which spans the whole world\n     * @param {boolean} global Whether the projection is global.\n     * @api\n     */\n    Projection.prototype.setGlobal = function (global) {\n        this.global_ = global;\n        this.canWrapX_ = !!(global && this.extent_);\n    };\n    /**\n     * @return {import(\"../tilegrid/TileGrid.js\").default} The default tile grid.\n     */\n    Projection.prototype.getDefaultTileGrid = function () {\n        return this.defaultTileGrid_;\n    };\n    /**\n     * @param {import(\"../tilegrid/TileGrid.js\").default} tileGrid The default tile grid.\n     */\n    Projection.prototype.setDefaultTileGrid = function (tileGrid) {\n        this.defaultTileGrid_ = tileGrid;\n    };\n    /**\n     * Set the validity extent for this projection.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @api\n     */\n    Projection.prototype.setExtent = function (extent) {\n        this.extent_ = extent;\n        this.canWrapX_ = !!(this.global_ && extent);\n    };\n    /**\n     * Set the world extent for this projection.\n     * @param {import(\"../extent.js\").Extent} worldExtent World extent\n     *     [minlon, minlat, maxlon, maxlat].\n     * @api\n     */\n    Projection.prototype.setWorldExtent = function (worldExtent) {\n        this.worldExtent_ = worldExtent;\n    };\n    /**\n     * Set the getPointResolution function (see {@link module:ol/proj~getPointResolution}\n     * for this projection.\n     * @param {function(number, import(\"../coordinate.js\").Coordinate):number} func Function\n     * @api\n     */\n    Projection.prototype.setGetPointResolution = function (func) {\n        this.getPointResolutionFunc_ = func;\n    };\n    /**\n     * Get the custom point resolution function for this projection (if set).\n     * @return {function(number, import(\"../coordinate.js\").Coordinate):number|undefined} The custom point\n     * resolution function (if set).\n     */\n    Projection.prototype.getPointResolutionFunc = function () {\n        return this.getPointResolutionFunc_;\n    };\n    return Projection;\n}());\nexport default Projection;\n//# sourceMappingURL=Projection.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/proj/epsg3857\n */\nimport { cosh } from '../math.js';\nimport Projection from './Projection.js';\nimport Units from './Units.js';\n/**\n * Radius of WGS84 sphere\n *\n * @const\n * @type {number}\n */\nexport var RADIUS = 6378137;\n/**\n * @const\n * @type {number}\n */\nexport var HALF_SIZE = Math.PI * RADIUS;\n/**\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var EXTENT = [\n    -HALF_SIZE, -HALF_SIZE,\n    HALF_SIZE, HALF_SIZE\n];\n/**\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var WORLD_EXTENT = [-180, -85, 180, 85];\n/**\n * @classdesc\n * Projection object for web/spherical Mercator (EPSG:3857).\n */\nvar EPSG3857Projection = /** @class */ (function (_super) {\n    __extends(EPSG3857Projection, _super);\n    /**\n     * @param {string} code Code.\n     */\n    function EPSG3857Projection(code) {\n        return _super.call(this, {\n            code: code,\n            units: Units.METERS,\n            extent: EXTENT,\n            global: true,\n            worldExtent: WORLD_EXTENT,\n            getPointResolution: function (resolution, point) {\n                return resolution / cosh(point[1] / RADIUS);\n            }\n        }) || this;\n    }\n    return EPSG3857Projection;\n}(Projection));\n/**\n * Projections equal to EPSG:3857.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n    new EPSG3857Projection('EPSG:3857'),\n    new EPSG3857Projection('EPSG:102100'),\n    new EPSG3857Projection('EPSG:102113'),\n    new EPSG3857Projection('EPSG:900913'),\n    new EPSG3857Projection('urn:ogc:def:crs:EPSG:6.18:3:3857'),\n    new EPSG3857Projection('urn:ogc:def:crs:EPSG::3857'),\n    new EPSG3857Projection('http://www.opengis.net/gml/srs/epsg.xml#3857')\n];\n/**\n * Transformation from EPSG:4326 to EPSG:3857.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function fromEPSG4326(input, opt_output, opt_dimension) {\n    var length = input.length;\n    var dimension = opt_dimension > 1 ? opt_dimension : 2;\n    var output = opt_output;\n    if (output === undefined) {\n        if (dimension > 2) {\n            // preserve values beyond second dimension\n            output = input.slice();\n        }\n        else {\n            output = new Array(length);\n        }\n    }\n    var halfSize = HALF_SIZE;\n    for (var i = 0; i < length; i += dimension) {\n        output[i] = halfSize * input[i] / 180;\n        var y = RADIUS *\n            Math.log(Math.tan(Math.PI * (+input[i + 1] + 90) / 360));\n        if (y > halfSize) {\n            y = halfSize;\n        }\n        else if (y < -halfSize) {\n            y = -halfSize;\n        }\n        output[i + 1] = y;\n    }\n    return output;\n}\n/**\n * Transformation from EPSG:3857 to EPSG:4326.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function toEPSG4326(input, opt_output, opt_dimension) {\n    var length = input.length;\n    var dimension = opt_dimension > 1 ? opt_dimension : 2;\n    var output = opt_output;\n    if (output === undefined) {\n        if (dimension > 2) {\n            // preserve values beyond second dimension\n            output = input.slice();\n        }\n        else {\n            output = new Array(length);\n        }\n    }\n    for (var i = 0; i < length; i += dimension) {\n        output[i] = 180 * input[i] / HALF_SIZE;\n        output[i + 1] = 360 * Math.atan(Math.exp(input[i + 1] / RADIUS)) / Math.PI - 90;\n    }\n    return output;\n}\n//# sourceMappingURL=epsg3857.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/proj/epsg4326\n */\nimport Projection from './Projection.js';\nimport Units from './Units.js';\n/**\n * Semi-major radius of the WGS84 ellipsoid.\n *\n * @const\n * @type {number}\n */\nexport var RADIUS = 6378137;\n/**\n * Extent of the EPSG:4326 projection which is the whole world.\n *\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var EXTENT = [-180, -90, 180, 90];\n/**\n * @const\n * @type {number}\n */\nexport var METERS_PER_UNIT = Math.PI * RADIUS / 180;\n/**\n * @classdesc\n * Projection object for WGS84 geographic coordinates (EPSG:4326).\n *\n * Note that OpenLayers does not strictly comply with the EPSG definition.\n * The EPSG registry defines 4326 as a CRS for Latitude,Longitude (y,x).\n * OpenLayers treats EPSG:4326 as a pseudo-projection, with x,y coordinates.\n */\nvar EPSG4326Projection = /** @class */ (function (_super) {\n    __extends(EPSG4326Projection, _super);\n    /**\n     * @param {string} code Code.\n     * @param {string=} opt_axisOrientation Axis orientation.\n     */\n    function EPSG4326Projection(code, opt_axisOrientation) {\n        return _super.call(this, {\n            code: code,\n            units: Units.DEGREES,\n            extent: EXTENT,\n            axisOrientation: opt_axisOrientation,\n            global: true,\n            metersPerUnit: METERS_PER_UNIT,\n            worldExtent: EXTENT\n        }) || this;\n    }\n    return EPSG4326Projection;\n}(Projection));\n/**\n * Projections equal to EPSG:4326.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n    new EPSG4326Projection('CRS:84'),\n    new EPSG4326Projection('EPSG:4326', 'neu'),\n    new EPSG4326Projection('urn:ogc:def:crs:EPSG::4326', 'neu'),\n    new EPSG4326Projection('urn:ogc:def:crs:EPSG:6.6:4326', 'neu'),\n    new EPSG4326Projection('urn:ogc:def:crs:OGC:1.3:CRS84'),\n    new EPSG4326Projection('urn:ogc:def:crs:OGC:2:84'),\n    new EPSG4326Projection('http://www.opengis.net/gml/srs/epsg.xml#4326', 'neu'),\n    new EPSG4326Projection('urn:x-ogc:def:crs:EPSG:4326', 'neu')\n];\n//# sourceMappingURL=epsg4326.js.map","/**\n * @module ol/proj/transforms\n */\nimport { isEmpty } from '../obj.js';\n/**\n * @private\n * @type {!Object<string, Object<string, import(\"../proj.js\").TransformFunction>>}\n */\nvar transforms = {};\n/**\n * Clear the transform cache.\n */\nexport function clear() {\n    transforms = {};\n}\n/**\n * Registers a conversion function to convert coordinates from the source\n * projection to the destination projection.\n *\n * @param {import(\"./Projection.js\").default} source Source.\n * @param {import(\"./Projection.js\").default} destination Destination.\n * @param {import(\"../proj.js\").TransformFunction} transformFn Transform.\n */\nexport function add(source, destination, transformFn) {\n    var sourceCode = source.getCode();\n    var destinationCode = destination.getCode();\n    if (!(sourceCode in transforms)) {\n        transforms[sourceCode] = {};\n    }\n    transforms[sourceCode][destinationCode] = transformFn;\n}\n/**\n * Unregisters the conversion function to convert coordinates from the source\n * projection to the destination projection.  This method is used to clean up\n * cached transforms during testing.\n *\n * @param {import(\"./Projection.js\").default} source Source projection.\n * @param {import(\"./Projection.js\").default} destination Destination projection.\n * @return {import(\"../proj.js\").TransformFunction} transformFn The unregistered transform.\n */\nexport function remove(source, destination) {\n    var sourceCode = source.getCode();\n    var destinationCode = destination.getCode();\n    var transform = transforms[sourceCode][destinationCode];\n    delete transforms[sourceCode][destinationCode];\n    if (isEmpty(transforms[sourceCode])) {\n        delete transforms[sourceCode];\n    }\n    return transform;\n}\n/**\n * Get a transform given a source code and a destination code.\n * @param {string} sourceCode The code for the source projection.\n * @param {string} destinationCode The code for the destination projection.\n * @return {import(\"../proj.js\").TransformFunction|undefined} The transform function (if found).\n */\nexport function get(sourceCode, destinationCode) {\n    var transform;\n    if (sourceCode in transforms && destinationCode in transforms[sourceCode]) {\n        transform = transforms[sourceCode][destinationCode];\n    }\n    return transform;\n}\n//# sourceMappingURL=transforms.js.map","/**\n * @module ol/proj/projections\n */\n/**\n * @type {Object<string, import(\"./Projection.js\").default>}\n */\nvar cache = {};\n/**\n * Clear the projections cache.\n */\nexport function clear() {\n    cache = {};\n}\n/**\n * Get a cached projection by code.\n * @param {string} code The code for the projection.\n * @return {import(\"./Projection.js\").default} The projection (if cached).\n */\nexport function get(code) {\n    return cache[code] || null;\n}\n/**\n * Add a projection to the cache.\n * @param {string} code The projection code.\n * @param {import(\"./Projection.js\").default} projection The projection to cache.\n */\nexport function add(code, projection) {\n    cache[code] = projection;\n}\n//# sourceMappingURL=projections.js.map","/**\n * @module ol/proj\n */\n/**\n * The ol/proj module stores:\n * * a list of {@link module:ol/proj/Projection}\n * objects, one for each projection supported by the application\n * * a list of transform functions needed to convert coordinates in one projection\n * into another.\n *\n * The static functions are the methods used to maintain these.\n * Each transform function can handle not only simple coordinate pairs, but also\n * large arrays of coordinates such as vector geometries.\n *\n * When loaded, the library adds projection objects for EPSG:4326 (WGS84\n * geographic coordinates) and EPSG:3857 (Web or Spherical Mercator, as used\n * for example by Bing Maps or OpenStreetMap), together with the relevant\n * transform functions.\n *\n * Additional transforms may be added by using the http://proj4js.org/\n * library (version 2.2 or later). You can use the full build supplied by\n * Proj4js, or create a custom build to support those projections you need; see\n * the Proj4js website for how to do this. You also need the Proj4js definitions\n * for the required projections. These definitions can be obtained from\n * https://epsg.io/, and are a JS function, so can be loaded in a script\n * tag (as in the examples) or pasted into your application.\n *\n * After all required projection definitions are added to proj4's registry (by\n * using `proj4.defs()`), simply call `register(proj4)` from the `ol/proj/proj4`\n * package. Existing transforms are not changed by this function. See\n * examples/wms-image-custom-proj for an example of this.\n *\n * Additional projection definitions can be registered with `proj4.defs()` any\n * time. Just make sure to call `register(proj4)` again; for example, with user-supplied data where you don't\n * know in advance what projections are needed, you can initially load minimal\n * support and then load whichever are requested.\n *\n * Note that Proj4js does not support projection extents. If you want to add\n * one for creating default tile grids, you can add it after the Projection\n * object has been created with `setExtent`, for example,\n * `get('EPSG:1234').setExtent(extent)`.\n *\n * In addition to Proj4js support, any transform functions can be added with\n * {@link module:ol/proj~addCoordinateTransforms}. To use this, you must first create\n * a {@link module:ol/proj/Projection} object for the new projection and add it with\n * {@link module:ol/proj~addProjection}. You can then add the forward and inverse\n * functions with {@link module:ol/proj~addCoordinateTransforms}. See\n * examples/wms-custom-proj for an example of this.\n *\n * Note that if no transforms are needed and you only need to define the\n * projection, just add a {@link module:ol/proj/Projection} with\n * {@link module:ol/proj~addProjection}. See examples/wms-no-proj for an example of\n * this.\n */\nimport { getDistance } from './sphere.js';\nimport { applyTransform } from './extent.js';\nimport { modulo } from './math.js';\nimport { toEPSG4326, fromEPSG4326, PROJECTIONS as EPSG3857_PROJECTIONS } from './proj/epsg3857.js';\nimport { PROJECTIONS as EPSG4326_PROJECTIONS } from './proj/epsg4326.js';\nimport Projection from './proj/Projection.js';\nimport Units, { METERS_PER_UNIT } from './proj/Units.js';\nimport { add as addTransformFunc, clear as clearTransformFuncs, get as getTransformFunc } from './proj/transforms.js';\nimport { add as addProj, clear as clearProj, get as getProj } from './proj/projections.js';\n/**\n * A projection as {@link module:ol/proj/Projection}, SRS identifier\n * string or undefined.\n * @typedef {Projection|string|undefined} ProjectionLike\n * @api\n */\n/**\n * A transform function accepts an array of input coordinate values, an optional\n * output array, and an optional dimension (default should be 2).  The function\n * transforms the input coordinate values, populates the output array, and\n * returns the output array.\n *\n * @typedef {function(Array<number>, Array<number>=, number=): Array<number>} TransformFunction\n * @api\n */\nexport { METERS_PER_UNIT };\nexport { Projection };\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array<number>} Output coordinate array (new array, same coordinate\n *     values).\n */\nexport function cloneTransform(input, opt_output, opt_dimension) {\n    var output;\n    if (opt_output !== undefined) {\n        for (var i = 0, ii = input.length; i < ii; ++i) {\n            opt_output[i] = input[i];\n        }\n        output = opt_output;\n    }\n    else {\n        output = input.slice();\n    }\n    return output;\n}\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>=} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array<number>} Input coordinate array (same array as input).\n */\nexport function identityTransform(input, opt_output, opt_dimension) {\n    if (opt_output !== undefined && input !== opt_output) {\n        for (var i = 0, ii = input.length; i < ii; ++i) {\n            opt_output[i] = input[i];\n        }\n        input = opt_output;\n    }\n    return input;\n}\n/**\n * Add a Projection object to the list of supported projections that can be\n * looked up by their code.\n *\n * @param {Projection} projection Projection instance.\n * @api\n */\nexport function addProjection(projection) {\n    addProj(projection.getCode(), projection);\n    addTransformFunc(projection, projection, cloneTransform);\n}\n/**\n * @param {Array<Projection>} projections Projections.\n */\nexport function addProjections(projections) {\n    projections.forEach(addProjection);\n}\n/**\n * Fetches a Projection object for the code specified.\n *\n * @param {ProjectionLike} projectionLike Either a code string which is\n *     a combination of authority and identifier such as \"EPSG:4326\", or an\n *     existing projection object, or undefined.\n * @return {Projection} Projection object, or null if not in list.\n * @api\n */\nexport function get(projectionLike) {\n    return typeof projectionLike === 'string' ?\n        getProj(/** @type {string} */ (projectionLike)) :\n        ( /** @type {Projection} */(projectionLike) || null);\n}\n/**\n * Get the resolution of the point in degrees or distance units.\n * For projections with degrees as the unit this will simply return the\n * provided resolution. For other projections the point resolution is\n * by default estimated by transforming the 'point' pixel to EPSG:4326,\n * measuring its width and height on the normal sphere,\n * and taking the average of the width and height.\n * A custom function can be provided for a specific projection, either\n * by setting the `getPointResolution` option in the\n * {@link module:ol/proj/Projection~Projection} constructor or by using\n * {@link module:ol/proj/Projection~Projection#setGetPointResolution} to change an existing\n * projection object.\n * @param {ProjectionLike} projection The projection.\n * @param {number} resolution Nominal resolution in projection units.\n * @param {import(\"./coordinate.js\").Coordinate} point Point to find adjusted resolution at.\n * @param {Units=} opt_units Units to get the point resolution in.\n * Default is the projection's units.\n * @return {number} Point resolution.\n * @api\n */\nexport function getPointResolution(projection, resolution, point, opt_units) {\n    projection = get(projection);\n    var pointResolution;\n    var getter = projection.getPointResolutionFunc();\n    if (getter) {\n        pointResolution = getter(resolution, point);\n        if (opt_units && opt_units !== projection.getUnits()) {\n            var metersPerUnit = projection.getMetersPerUnit();\n            if (metersPerUnit) {\n                pointResolution = pointResolution * metersPerUnit / METERS_PER_UNIT[opt_units];\n            }\n        }\n    }\n    else {\n        var units = projection.getUnits();\n        if (units == Units.DEGREES && !opt_units || opt_units == Units.DEGREES) {\n            pointResolution = resolution;\n        }\n        else {\n            // Estimate point resolution by transforming the center pixel to EPSG:4326,\n            // measuring its width and height on the normal sphere, and taking the\n            // average of the width and height.\n            var toEPSG4326_1 = getTransformFromProjections(projection, get('EPSG:4326'));\n            var vertices = [\n                point[0] - resolution / 2, point[1],\n                point[0] + resolution / 2, point[1],\n                point[0], point[1] - resolution / 2,\n                point[0], point[1] + resolution / 2\n            ];\n            vertices = toEPSG4326_1(vertices, vertices, 2);\n            var width = getDistance(vertices.slice(0, 2), vertices.slice(2, 4));\n            var height = getDistance(vertices.slice(4, 6), vertices.slice(6, 8));\n            pointResolution = (width + height) / 2;\n            var metersPerUnit = opt_units ?\n                METERS_PER_UNIT[opt_units] :\n                projection.getMetersPerUnit();\n            if (metersPerUnit !== undefined) {\n                pointResolution /= metersPerUnit;\n            }\n        }\n    }\n    return pointResolution;\n}\n/**\n * Registers transformation functions that don't alter coordinates. Those allow\n * to transform between projections with equal meaning.\n *\n * @param {Array<Projection>} projections Projections.\n * @api\n */\nexport function addEquivalentProjections(projections) {\n    addProjections(projections);\n    projections.forEach(function (source) {\n        projections.forEach(function (destination) {\n            if (source !== destination) {\n                addTransformFunc(source, destination, cloneTransform);\n            }\n        });\n    });\n}\n/**\n * Registers transformation functions to convert coordinates in any projection\n * in projection1 to any projection in projection2.\n *\n * @param {Array<Projection>} projections1 Projections with equal\n *     meaning.\n * @param {Array<Projection>} projections2 Projections with equal\n *     meaning.\n * @param {TransformFunction} forwardTransform Transformation from any\n *   projection in projection1 to any projection in projection2.\n * @param {TransformFunction} inverseTransform Transform from any projection\n *   in projection2 to any projection in projection1..\n */\nexport function addEquivalentTransforms(projections1, projections2, forwardTransform, inverseTransform) {\n    projections1.forEach(function (projection1) {\n        projections2.forEach(function (projection2) {\n            addTransformFunc(projection1, projection2, forwardTransform);\n            addTransformFunc(projection2, projection1, inverseTransform);\n        });\n    });\n}\n/**\n * Clear all cached projections and transforms.\n */\nexport function clearAllProjections() {\n    clearProj();\n    clearTransformFuncs();\n}\n/**\n * @param {Projection|string|undefined} projection Projection.\n * @param {string} defaultCode Default code.\n * @return {Projection} Projection.\n */\nexport function createProjection(projection, defaultCode) {\n    if (!projection) {\n        return get(defaultCode);\n    }\n    else if (typeof projection === 'string') {\n        return get(projection);\n    }\n    else {\n        return (\n        /** @type {Projection} */ (projection));\n    }\n}\n/**\n * Creates a {@link module:ol/proj~TransformFunction} from a simple 2D coordinate transform\n * function.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} coordTransform Coordinate\n *     transform.\n * @return {TransformFunction} Transform function.\n */\nexport function createTransformFromCoordinateTransform(coordTransform) {\n    return (\n    /**\n     * @param {Array<number>} input Input.\n     * @param {Array<number>=} opt_output Output.\n     * @param {number=} opt_dimension Dimension.\n     * @return {Array<number>} Output.\n     */\n    function (input, opt_output, opt_dimension) {\n        var length = input.length;\n        var dimension = opt_dimension !== undefined ? opt_dimension : 2;\n        var output = opt_output !== undefined ? opt_output : new Array(length);\n        for (var i = 0; i < length; i += dimension) {\n            var point = coordTransform([input[i], input[i + 1]]);\n            output[i] = point[0];\n            output[i + 1] = point[1];\n            for (var j = dimension - 1; j >= 2; --j) {\n                output[i + j] = input[i + j];\n            }\n        }\n        return output;\n    });\n}\n/**\n * Registers coordinate transform functions to convert coordinates between the\n * source projection and the destination projection.\n * The forward and inverse functions convert coordinate pairs; this function\n * converts these into the functions used internally which also handle\n * extents and coordinate arrays.\n *\n * @param {ProjectionLike} source Source projection.\n * @param {ProjectionLike} destination Destination projection.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} forward The forward transform\n *     function (that is, from the source projection to the destination\n *     projection) that takes a {@link module:ol/coordinate~Coordinate} as argument and returns\n *     the transformed {@link module:ol/coordinate~Coordinate}.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} inverse The inverse transform\n *     function (that is, from the destination projection to the source\n *     projection) that takes a {@link module:ol/coordinate~Coordinate} as argument and returns\n *     the transformed {@link module:ol/coordinate~Coordinate}.\n * @api\n */\nexport function addCoordinateTransforms(source, destination, forward, inverse) {\n    var sourceProj = get(source);\n    var destProj = get(destination);\n    addTransformFunc(sourceProj, destProj, createTransformFromCoordinateTransform(forward));\n    addTransformFunc(destProj, sourceProj, createTransformFromCoordinateTransform(inverse));\n}\n/**\n * Transforms a coordinate from longitude/latitude to a different projection.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate as longitude and latitude, i.e.\n *     an array with longitude as 1st and latitude as 2nd element.\n * @param {ProjectionLike=} opt_projection Target projection. The\n *     default is Web Mercator, i.e. 'EPSG:3857'.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate projected to the target projection.\n * @api\n */\nexport function fromLonLat(coordinate, opt_projection) {\n    return transform(coordinate, 'EPSG:4326', opt_projection !== undefined ? opt_projection : 'EPSG:3857');\n}\n/**\n * Transforms a coordinate to longitude/latitude.\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Projected coordinate.\n * @param {ProjectionLike=} opt_projection Projection of the coordinate.\n *     The default is Web Mercator, i.e. 'EPSG:3857'.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate as longitude and latitude, i.e. an array\n *     with longitude as 1st and latitude as 2nd element.\n * @api\n */\nexport function toLonLat(coordinate, opt_projection) {\n    var lonLat = transform(coordinate, opt_projection !== undefined ? opt_projection : 'EPSG:3857', 'EPSG:4326');\n    var lon = lonLat[0];\n    if (lon < -180 || lon > 180) {\n        lonLat[0] = modulo(lon + 180, 360) - 180;\n    }\n    return lonLat;\n}\n/**\n * Checks if two projections are the same, that is every coordinate in one\n * projection does represent the same geographic point as the same coordinate in\n * the other projection.\n *\n * @param {Projection} projection1 Projection 1.\n * @param {Projection} projection2 Projection 2.\n * @return {boolean} Equivalent.\n * @api\n */\nexport function equivalent(projection1, projection2) {\n    if (projection1 === projection2) {\n        return true;\n    }\n    var equalUnits = projection1.getUnits() === projection2.getUnits();\n    if (projection1.getCode() === projection2.getCode()) {\n        return equalUnits;\n    }\n    else {\n        var transformFunc = getTransformFromProjections(projection1, projection2);\n        return transformFunc === cloneTransform && equalUnits;\n    }\n}\n/**\n * Searches in the list of transform functions for the function for converting\n * coordinates from the source projection to the destination projection.\n *\n * @param {Projection} sourceProjection Source Projection object.\n * @param {Projection} destinationProjection Destination Projection\n *     object.\n * @return {TransformFunction} Transform function.\n */\nexport function getTransformFromProjections(sourceProjection, destinationProjection) {\n    var sourceCode = sourceProjection.getCode();\n    var destinationCode = destinationProjection.getCode();\n    var transformFunc = getTransformFunc(sourceCode, destinationCode);\n    if (!transformFunc) {\n        transformFunc = identityTransform;\n    }\n    return transformFunc;\n}\n/**\n * Given the projection-like objects, searches for a transformation\n * function to convert a coordinates array from the source projection to the\n * destination projection.\n *\n * @param {ProjectionLike} source Source.\n * @param {ProjectionLike} destination Destination.\n * @return {TransformFunction} Transform function.\n * @api\n */\nexport function getTransform(source, destination) {\n    var sourceProjection = get(source);\n    var destinationProjection = get(destination);\n    return getTransformFromProjections(sourceProjection, destinationProjection);\n}\n/**\n * Transforms a coordinate from source projection to destination projection.\n * This returns a new coordinate (and does not modify the original).\n *\n * See {@link module:ol/proj~transformExtent} for extent transformation.\n * See the transform method of {@link module:ol/geom/Geometry~Geometry} and its\n * subclasses for geometry transforms.\n *\n * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {ProjectionLike} source Source projection-like.\n * @param {ProjectionLike} destination Destination projection-like.\n * @return {import(\"./coordinate.js\").Coordinate} Coordinate.\n * @api\n */\nexport function transform(coordinate, source, destination) {\n    var transformFunc = getTransform(source, destination);\n    return transformFunc(coordinate, undefined, coordinate.length);\n}\n/**\n * Transforms an extent from source projection to destination projection.  This\n * returns a new extent (and does not modify the original).\n *\n * @param {import(\"./extent.js\").Extent} extent The extent to transform.\n * @param {ProjectionLike} source Source projection-like.\n * @param {ProjectionLike} destination Destination projection-like.\n * @param {number=} opt_stops Number of stops per side used for the transform.\n * By default only the corners are used.\n * @return {import(\"./extent.js\").Extent} The transformed extent.\n * @api\n */\nexport function transformExtent(extent, source, destination, opt_stops) {\n    var transformFunc = getTransform(source, destination);\n    return applyTransform(extent, transformFunc, undefined, opt_stops);\n}\n/**\n * Transforms the given point to the destination projection.\n *\n * @param {import(\"./coordinate.js\").Coordinate} point Point.\n * @param {Projection} sourceProjection Source projection.\n * @param {Projection} destinationProjection Destination projection.\n * @return {import(\"./coordinate.js\").Coordinate} Point.\n */\nexport function transformWithProjections(point, sourceProjection, destinationProjection) {\n    var transformFunc = getTransformFromProjections(sourceProjection, destinationProjection);\n    return transformFunc(point);\n}\n/**\n * @type {?Projection}\n */\nvar userProjection = null;\n/**\n * Set the projection for coordinates supplied from and returned by API methods.\n * Note that this method is not yet a part of the stable API.  Support for user\n * projections is not yet complete and should be considered experimental.\n * @param {ProjectionLike} projection The user projection.\n */\nexport function setUserProjection(projection) {\n    userProjection = get(projection);\n}\n/**\n * Clear the user projection if set.  Note that this method is not yet a part of\n * the stable API.  Support for user projections is not yet complete and should\n * be considered experimental.\n */\nexport function clearUserProjection() {\n    userProjection = null;\n}\n/**\n * Get the projection for coordinates supplied from and returned by API methods.\n * Note that this method is not yet a part of the stable API.  Support for user\n * projections is not yet complete and should be considered experimental.\n * @returns {?Projection} The user projection (or null if not set).\n */\nexport function getUserProjection() {\n    return userProjection;\n}\n/**\n * Use geographic coordinates (WGS-84 datum) in API methods.  Note that this\n * method is not yet a part of the stable API.  Support for user projections is\n * not yet complete and should be considered experimental.\n */\nexport function useGeographic() {\n    setUserProjection('EPSG:4326');\n}\n/**\n * Return a coordinate transformed into the user projection.  If no user projection\n * is set, the original coordinate is returned.\n * @param {Array<number>} coordinate Input coordinate.\n * @param {ProjectionLike} sourceProjection The input coordinate projection.\n * @returns {Array<number>} The input coordinate in the user projection.\n */\nexport function toUserCoordinate(coordinate, sourceProjection) {\n    if (!userProjection) {\n        return coordinate;\n    }\n    return transform(coordinate, sourceProjection, userProjection);\n}\n/**\n * Return a coordinate transformed from the user projection.  If no user projection\n * is set, the original coordinate is returned.\n * @param {Array<number>} coordinate Input coordinate.\n * @param {ProjectionLike} destProjection The destination projection.\n * @returns {Array<number>} The input coordinate transformed.\n */\nexport function fromUserCoordinate(coordinate, destProjection) {\n    if (!userProjection) {\n        return coordinate;\n    }\n    return transform(coordinate, userProjection, destProjection);\n}\n/**\n * Return an extent transformed into the user projection.  If no user projection\n * is set, the original extent is returned.\n * @param {import(\"./extent.js\").Extent} extent Input extent.\n * @param {ProjectionLike} sourceProjection The input extent projection.\n * @returns {import(\"./extent.js\").Extent} The input extent in the user projection.\n */\nexport function toUserExtent(extent, sourceProjection) {\n    if (!userProjection) {\n        return extent;\n    }\n    return transformExtent(extent, sourceProjection, userProjection);\n}\n/**\n * Return an extent transformed from the user projection.  If no user projection\n * is set, the original extent is returned.\n * @param {import(\"./extent.js\").Extent} extent Input extent.\n * @param {ProjectionLike} destProjection The destination projection.\n * @returns {import(\"./extent.js\").Extent} The input extent transformed.\n */\nexport function fromUserExtent(extent, destProjection) {\n    if (!userProjection) {\n        return extent;\n    }\n    return transformExtent(extent, userProjection, destProjection);\n}\n/**\n * Add transforms to and from EPSG:4326 and EPSG:3857.  This function is called\n * by when this module is executed and should only need to be called again after\n * `clearAllProjections()` is called (e.g. in tests).\n */\nexport function addCommon() {\n    // Add transformations that don't alter coordinates to convert within set of\n    // projections with equal meaning.\n    addEquivalentProjections(EPSG3857_PROJECTIONS);\n    addEquivalentProjections(EPSG4326_PROJECTIONS);\n    // Add transformations to convert EPSG:4326 like coordinates to EPSG:3857 like\n    // coordinates and back.\n    addEquivalentTransforms(EPSG4326_PROJECTIONS, EPSG3857_PROJECTIONS, fromEPSG4326, toEPSG4326);\n}\naddCommon();\n//# sourceMappingURL=proj.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/ScaleLine\n */\nimport { getChangeEventType } from '../Object.js';\nimport { assert } from '../asserts.js';\nimport Control from './Control.js';\nimport { CLASS_UNSELECTABLE } from '../css.js';\nimport { getPointResolution, METERS_PER_UNIT } from '../proj.js';\nimport ProjUnits from '../proj/Units.js';\n/**\n * @type {string}\n */\nvar UNITS_PROP = 'units';\n/**\n * Units for the scale line. Supported values are `'degrees'`, `'imperial'`,\n * `'nautical'`, `'metric'`, `'us'`.\n * @enum {string}\n */\nexport var Units = {\n    DEGREES: 'degrees',\n    IMPERIAL: 'imperial',\n    NAUTICAL: 'nautical',\n    METRIC: 'metric',\n    US: 'us'\n};\n/**\n * @const\n * @type {Array<number>}\n */\nvar LEADING_DIGITS = [1, 2, 5];\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-scale-line'] CSS Class name.\n * @property {number} [minWidth=64] Minimum width in pixels.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when the control\n * should be re-rendered. This is called in a `requestAnimationFrame` callback.\n * @property {HTMLElement|string} [target] Specify a target if you want the control\n * to be rendered outside of the map's viewport.\n * @property {Units|string} [units='metric'] Units.\n * @property {boolean} [bar=false] Render scalebars instead of a line.\n * @property {number} [steps=4] Number of steps the scalebar should use. Use even numbers\n * for best results. Only applies when `bar` is `true`.\n * @property {boolean} [text=false] Render the text scale above of the scalebar. Only applies\n * when `bar` is `true`.\n */\n/**\n * @classdesc\n * A control displaying rough y-axis distances, calculated for the center of the\n * viewport. For conformal projections (e.g. EPSG:3857, the default view\n * projection in OpenLayers), the scale is valid for all directions.\n * No scale line will be shown when the y-axis distance of a pixel at the\n * viewport center cannot be calculated in the view projection.\n * By default the scale line will show in the bottom left portion of the map,\n * but this can be changed by using the css selector `.ol-scale-line`.\n * When specifying `bar` as `true`, a scalebar will be rendered instead\n * of a scaleline.\n *\n * @api\n */\nvar ScaleLine = /** @class */ (function (_super) {\n    __extends(ScaleLine, _super);\n    /**\n     * @param {Options=} opt_options Scale line options.\n     */\n    function ScaleLine(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var className = options.className !== undefined ? options.className :\n            options.bar ? 'ol-scale-bar' : 'ol-scale-line';\n        _this = _super.call(this, {\n            element: document.createElement('div'),\n            render: options.render || render,\n            target: options.target\n        }) || this;\n        /**\n         * @private\n         * @type {HTMLElement}\n         */\n        _this.innerElement_ = document.createElement('div');\n        _this.innerElement_.className = className + '-inner';\n        _this.element.className = className + ' ' + CLASS_UNSELECTABLE;\n        _this.element.appendChild(_this.innerElement_);\n        /**\n         * @private\n         * @type {?import(\"../View.js\").State}\n         */\n        _this.viewState_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.minWidth_ = options.minWidth !== undefined ? options.minWidth : 64;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.renderedVisible_ = false;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.renderedWidth_ = undefined;\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.renderedHTML_ = '';\n        _this.addEventListener(getChangeEventType(UNITS_PROP), _this.handleUnitsChanged_);\n        _this.setUnits(options.units || Units.METRIC);\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.scaleBar_ = options.bar || false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.scaleBarSteps_ = options.steps || 4;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.scaleBarText_ = options.text || false;\n        return _this;\n    }\n    /**\n     * Return the units to use in the scale line.\n     * @return {Units} The units\n     * to use in the scale line.\n     * @observable\n     * @api\n     */\n    ScaleLine.prototype.getUnits = function () {\n        return this.get(UNITS_PROP);\n    };\n    /**\n     * @private\n     */\n    ScaleLine.prototype.handleUnitsChanged_ = function () {\n        this.updateElement_();\n    };\n    /**\n     * Set the units to use in the scale line.\n     * @param {Units} units The units to use in the scale line.\n     * @observable\n     * @api\n     */\n    ScaleLine.prototype.setUnits = function (units) {\n        this.set(UNITS_PROP, units);\n    };\n    /**\n     * @private\n     */\n    ScaleLine.prototype.updateElement_ = function () {\n        var viewState = this.viewState_;\n        if (!viewState) {\n            if (this.renderedVisible_) {\n                this.element.style.display = 'none';\n                this.renderedVisible_ = false;\n            }\n            return;\n        }\n        var center = viewState.center;\n        var projection = viewState.projection;\n        var units = this.getUnits();\n        var pointResolutionUnits = units == Units.DEGREES ?\n            ProjUnits.DEGREES :\n            ProjUnits.METERS;\n        var pointResolution = getPointResolution(projection, viewState.resolution, center, pointResolutionUnits);\n        var nominalCount = this.minWidth_ * pointResolution;\n        var suffix = '';\n        if (units == Units.DEGREES) {\n            var metersPerDegree = METERS_PER_UNIT[ProjUnits.DEGREES];\n            nominalCount *= metersPerDegree;\n            if (nominalCount < metersPerDegree / 60) {\n                suffix = '\\u2033'; // seconds\n                pointResolution *= 3600;\n            }\n            else if (nominalCount < metersPerDegree) {\n                suffix = '\\u2032'; // minutes\n                pointResolution *= 60;\n            }\n            else {\n                suffix = '\\u00b0'; // degrees\n            }\n        }\n        else if (units == Units.IMPERIAL) {\n            if (nominalCount < 0.9144) {\n                suffix = 'in';\n                pointResolution /= 0.0254;\n            }\n            else if (nominalCount < 1609.344) {\n                suffix = 'ft';\n                pointResolution /= 0.3048;\n            }\n            else {\n                suffix = 'mi';\n                pointResolution /= 1609.344;\n            }\n        }\n        else if (units == Units.NAUTICAL) {\n            pointResolution /= 1852;\n            suffix = 'nm';\n        }\n        else if (units == Units.METRIC) {\n            if (nominalCount < 0.001) {\n                suffix = 'μm';\n                pointResolution *= 1000000;\n            }\n            else if (nominalCount < 1) {\n                suffix = 'mm';\n                pointResolution *= 1000;\n            }\n            else if (nominalCount < 1000) {\n                suffix = 'm';\n            }\n            else {\n                suffix = 'km';\n                pointResolution /= 1000;\n            }\n        }\n        else if (units == Units.US) {\n            if (nominalCount < 0.9144) {\n                suffix = 'in';\n                pointResolution *= 39.37;\n            }\n            else if (nominalCount < 1609.344) {\n                suffix = 'ft';\n                pointResolution /= 0.30480061;\n            }\n            else {\n                suffix = 'mi';\n                pointResolution /= 1609.3472;\n            }\n        }\n        else {\n            assert(false, 33); // Invalid units\n        }\n        var i = 3 * Math.floor(Math.log(this.minWidth_ * pointResolution) / Math.log(10));\n        var count, width, decimalCount;\n        while (true) {\n            decimalCount = Math.floor(i / 3);\n            var decimal = Math.pow(10, decimalCount);\n            count = LEADING_DIGITS[((i % 3) + 3) % 3] * decimal;\n            width = Math.round(count / pointResolution);\n            if (isNaN(width)) {\n                this.element.style.display = 'none';\n                this.renderedVisible_ = false;\n                return;\n            }\n            else if (width >= this.minWidth_) {\n                break;\n            }\n            ++i;\n        }\n        var html;\n        if (this.scaleBar_) {\n            html = this.createScaleBar(width, count, suffix);\n        }\n        else {\n            html = count.toFixed(decimalCount < 0 ? -decimalCount : 0) + ' ' + suffix;\n        }\n        if (this.renderedHTML_ != html) {\n            this.innerElement_.innerHTML = html;\n            this.renderedHTML_ = html;\n        }\n        if (this.renderedWidth_ != width) {\n            this.innerElement_.style.width = width + 'px';\n            this.renderedWidth_ = width;\n        }\n        if (!this.renderedVisible_) {\n            this.element.style.display = '';\n            this.renderedVisible_ = true;\n        }\n    };\n    /**\n     * @private\n     * @param {number} width The current width of the scalebar.\n     * @param {number} scale The current scale.\n     * @param {string} suffix The suffix to append to the scale text.\n     * @returns {string} The stringified HTML of the scalebar.\n     */\n    ScaleLine.prototype.createScaleBar = function (width, scale, suffix) {\n        var mapScale = '1 : ' + Math.round(this.getScaleForResolution()).toLocaleString();\n        var scaleSteps = [];\n        var stepWidth = width / this.scaleBarSteps_;\n        var backgroundColor = '#ffffff';\n        for (var i = 0; i < this.scaleBarSteps_; i++) {\n            if (i === 0) {\n                // create the first marker at position 0\n                scaleSteps.push(this.createMarker('absolute', i));\n            }\n            scaleSteps.push('<div>' +\n                '<div ' +\n                'class=\"ol-scale-singlebar\" ' +\n                'style=' +\n                '\"width: ' + stepWidth + 'px;' +\n                'background-color: ' + backgroundColor + ';\"' +\n                '>' +\n                '</div>' +\n                this.createMarker('relative', i) +\n                /*render text every second step, except when only 2 steps */\n                (i % 2 === 0 || this.scaleBarSteps_ === 2 ?\n                    this.createStepText(i, width, false, scale, suffix) :\n                    '') +\n                '</div>');\n            if (i === this.scaleBarSteps_ - 1) {\n                { /*render text at the end */ }\n                scaleSteps.push(this.createStepText(i + 1, width, true, scale, suffix));\n            }\n            // switch colors of steps between black and white\n            if (backgroundColor === '#ffffff') {\n                backgroundColor = '#000000';\n            }\n            else {\n                backgroundColor = '#ffffff';\n            }\n        }\n        var scaleBarText;\n        if (this.scaleBarText_) {\n            scaleBarText = '<div ' +\n                'class=\"ol-scale-text\" ' +\n                'style=\"width: ' + width + 'px;\">' +\n                mapScale +\n                '</div>';\n        }\n        else {\n            scaleBarText = '';\n        }\n        var container = '<div ' +\n            'style=\"display: flex;\">' +\n            scaleBarText +\n            scaleSteps.join('') +\n            '</div>';\n        return container;\n    };\n    /**\n     * Creates a marker at given position\n     * @param {string} position - The position, absolute or relative\n     * @param {number} i - The iterator\n     * @returns {string} The stringified div containing the marker\n     */\n    ScaleLine.prototype.createMarker = function (position, i) {\n        var top = position === 'absolute' ? 3 : -10;\n        return '<div ' +\n            'class=\"ol-scale-step-marker\" ' +\n            'style=\"position: ' + position + ';' +\n            'top: ' + top + 'px;\"' +\n            '></div>';\n    };\n    /**\n     * Creates the label for a marker marker at given position\n     * @param {number} i - The iterator\n     * @param {number} width - The width the scalebar will currently use\n     * @param {boolean} isLast - Flag indicating if we add the last step text\n     * @param {number} scale - The current scale for the whole scalebar\n     * @param {string} suffix - The suffix for the scale\n     * @returns {string} The stringified div containing the step text\n     */\n    ScaleLine.prototype.createStepText = function (i, width, isLast, scale, suffix) {\n        var length = i === 0 ? 0 : Math.round((scale / this.scaleBarSteps_ * i) * 100) / 100;\n        var lengthString = length + (i === 0 ? '' : ' ' + suffix);\n        var margin = i === 0 ? -3 : width / this.scaleBarSteps_ * -1;\n        var minWidth = i === 0 ? 0 : width / this.scaleBarSteps_ * 2;\n        return '<div ' +\n            'class=\"ol-scale-step-text\" ' +\n            'style=\"' +\n            'margin-left: ' + margin + 'px;' +\n            'text-align: ' + (i === 0 ? 'left' : 'center') + '; ' +\n            'min-width: ' + minWidth + 'px;' +\n            'left: ' + (isLast ? width + 'px' : 'unset') + ';\"' +\n            '>' +\n            lengthString +\n            '</div>';\n    };\n    /**\n     * Returns the appropriate scale for the given resolution and units.\n     * @return {number} The appropriate scale.\n     */\n    ScaleLine.prototype.getScaleForResolution = function () {\n        var resolution = this.getMap().getView().getResolution();\n        var dpi = 25.4 / 0.28;\n        var mpu = this.viewState_.projection.getMetersPerUnit();\n        var inchesPerMeter = 39.37;\n        return parseFloat(resolution.toString()) * mpu * inchesPerMeter * dpi;\n    };\n    return ScaleLine;\n}(Control));\n/**\n * Update the scale line element.\n * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n * @this {ScaleLine}\n */\nexport function render(mapEvent) {\n    var frameState = mapEvent.frameState;\n    if (!frameState) {\n        this.viewState_ = null;\n    }\n    else {\n        this.viewState_ = frameState.viewState;\n    }\n    this.updateElement_();\n}\nexport default ScaleLine;\n//# sourceMappingURL=ScaleLine.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/Zoom\n */\nimport EventType from '../events/EventType.js';\nimport Control from './Control.js';\nimport { CLASS_CONTROL, CLASS_UNSELECTABLE } from '../css.js';\nimport { easeOut } from '../easing.js';\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {string} [className='ol-zoom'] CSS class name.\n * @property {string|HTMLElement} [zoomInLabel='+'] Text label to use for the zoom-in\n * button. Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string|HTMLElement} [zoomOutLabel='-'] Text label to use for the zoom-out button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string} [zoomInTipLabel='Zoom in'] Text label to use for the button tip.\n * @property {string} [zoomOutTipLabel='Zoom out'] Text label to use for the button tip.\n * @property {number} [delta=1] The zoom delta applied on each click.\n * @property {HTMLElement|string} [target] Specify a target if you want the control to be\n * rendered outside of the map's viewport.\n */\n/**\n * @classdesc\n * A control with 2 buttons, one for zoom in and one for zoom out.\n * This control is one of the default controls of a map. To style this control\n * use css selectors `.ol-zoom-in` and `.ol-zoom-out`.\n *\n * @api\n */\nvar Zoom = /** @class */ (function (_super) {\n    __extends(Zoom, _super);\n    /**\n     * @param {Options=} opt_options Zoom options.\n     */\n    function Zoom(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            element: document.createElement('div'),\n            target: options.target\n        }) || this;\n        var className = options.className !== undefined ? options.className : 'ol-zoom';\n        var delta = options.delta !== undefined ? options.delta : 1;\n        var zoomInLabel = options.zoomInLabel !== undefined ? options.zoomInLabel : '+';\n        var zoomOutLabel = options.zoomOutLabel !== undefined ? options.zoomOutLabel : '\\u2212';\n        var zoomInTipLabel = options.zoomInTipLabel !== undefined ?\n            options.zoomInTipLabel : 'Zoom in';\n        var zoomOutTipLabel = options.zoomOutTipLabel !== undefined ?\n            options.zoomOutTipLabel : 'Zoom out';\n        var inElement = document.createElement('button');\n        inElement.className = className + '-in';\n        inElement.setAttribute('type', 'button');\n        inElement.title = zoomInTipLabel;\n        inElement.appendChild(typeof zoomInLabel === 'string' ? document.createTextNode(zoomInLabel) : zoomInLabel);\n        inElement.addEventListener(EventType.CLICK, _this.handleClick_.bind(_this, delta), false);\n        var outElement = document.createElement('button');\n        outElement.className = className + '-out';\n        outElement.setAttribute('type', 'button');\n        outElement.title = zoomOutTipLabel;\n        outElement.appendChild(typeof zoomOutLabel === 'string' ? document.createTextNode(zoomOutLabel) : zoomOutLabel);\n        outElement.addEventListener(EventType.CLICK, _this.handleClick_.bind(_this, -delta), false);\n        var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;\n        var element = _this.element;\n        element.className = cssClasses;\n        element.appendChild(inElement);\n        element.appendChild(outElement);\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        return _this;\n    }\n    /**\n     * @param {number} delta Zoom delta.\n     * @param {MouseEvent} event The event to handle\n     * @private\n     */\n    Zoom.prototype.handleClick_ = function (delta, event) {\n        event.preventDefault();\n        this.zoomByDelta_(delta);\n    };\n    /**\n     * @param {number} delta Zoom delta.\n     * @private\n     */\n    Zoom.prototype.zoomByDelta_ = function (delta) {\n        var map = this.getMap();\n        var view = map.getView();\n        if (!view) {\n            // the map does not have a view, so we can't act\n            // upon it\n            return;\n        }\n        var currentZoom = view.getZoom();\n        if (currentZoom !== undefined) {\n            var newZoom = view.getConstrainedZoom(currentZoom + delta);\n            if (this.duration_ > 0) {\n                if (view.getAnimating()) {\n                    view.cancelAnimations();\n                }\n                view.animate({\n                    zoom: newZoom,\n                    duration: this.duration_,\n                    easing: easeOut\n                });\n            }\n            else {\n                view.setZoom(newZoom);\n            }\n        }\n    };\n    return Zoom;\n}(Control));\nexport default Zoom;\n//# sourceMappingURL=Zoom.js.map","/**\n * @module ol/geom/GeometryLayout\n */\n/**\n * The coordinate layout for geometries, indicating whether a 3rd or 4th z ('Z')\n * or measure ('M') coordinate is available. Supported values are `'XY'`,\n * `'XYZ'`, `'XYM'`, `'XYZM'`.\n * @enum {string}\n */\nexport default {\n    XY: 'XY',\n    XYZ: 'XYZ',\n    XYM: 'XYM',\n    XYZM: 'XYZM'\n};\n//# sourceMappingURL=GeometryLayout.js.map","/**\n * @module ol/geom/flat/transform\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../transform.js\").Transform} transform Transform.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function transform2D(flatCoordinates, offset, end, stride, transform, opt_dest) {\n    var dest = opt_dest ? opt_dest : [];\n    var i = 0;\n    for (var j = offset; j < end; j += stride) {\n        var x = flatCoordinates[j];\n        var y = flatCoordinates[j + 1];\n        dest[i++] = transform[0] * x + transform[2] * y + transform[4];\n        dest[i++] = transform[1] * x + transform[3] * y + transform[5];\n    }\n    if (opt_dest && dest.length != i) {\n        dest.length = i;\n    }\n    return dest;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} angle Angle.\n * @param {Array<number>} anchor Rotation anchor point.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function rotate(flatCoordinates, offset, end, stride, angle, anchor, opt_dest) {\n    var dest = opt_dest ? opt_dest : [];\n    var cos = Math.cos(angle);\n    var sin = Math.sin(angle);\n    var anchorX = anchor[0];\n    var anchorY = anchor[1];\n    var i = 0;\n    for (var j = offset; j < end; j += stride) {\n        var deltaX = flatCoordinates[j] - anchorX;\n        var deltaY = flatCoordinates[j + 1] - anchorY;\n        dest[i++] = anchorX + deltaX * cos - deltaY * sin;\n        dest[i++] = anchorY + deltaX * sin + deltaY * cos;\n        for (var k = j + 2; k < j + stride; ++k) {\n            dest[i++] = flatCoordinates[k];\n        }\n    }\n    if (opt_dest && dest.length != i) {\n        dest.length = i;\n    }\n    return dest;\n}\n/**\n * Scale the coordinates.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} sx Scale factor in the x-direction.\n * @param {number} sy Scale factor in the y-direction.\n * @param {Array<number>} anchor Scale anchor point.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function scale(flatCoordinates, offset, end, stride, sx, sy, anchor, opt_dest) {\n    var dest = opt_dest ? opt_dest : [];\n    var anchorX = anchor[0];\n    var anchorY = anchor[1];\n    var i = 0;\n    for (var j = offset; j < end; j += stride) {\n        var deltaX = flatCoordinates[j] - anchorX;\n        var deltaY = flatCoordinates[j + 1] - anchorY;\n        dest[i++] = anchorX + sx * deltaX;\n        dest[i++] = anchorY + sy * deltaY;\n        for (var k = j + 2; k < j + stride; ++k) {\n            dest[i++] = flatCoordinates[k];\n        }\n    }\n    if (opt_dest && dest.length != i) {\n        dest.length = i;\n    }\n    return dest;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} deltaX Delta X.\n * @param {number} deltaY Delta Y.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed coordinates.\n */\nexport function translate(flatCoordinates, offset, end, stride, deltaX, deltaY, opt_dest) {\n    var dest = opt_dest ? opt_dest : [];\n    var i = 0;\n    for (var j = offset; j < end; j += stride) {\n        dest[i++] = flatCoordinates[j] + deltaX;\n        dest[i++] = flatCoordinates[j + 1] + deltaY;\n        for (var k = j + 2; k < j + stride; ++k) {\n            dest[i++] = flatCoordinates[k];\n        }\n    }\n    if (opt_dest && dest.length != i) {\n        dest.length = i;\n    }\n    return dest;\n}\n//# sourceMappingURL=transform.js.map","/**\n * @module ol/transform\n */\nimport { assert } from './asserts.js';\n/**\n * An array representing an affine 2d transformation for use with\n * {@link module:ol/transform} functions. The array has 6 elements.\n * @typedef {!Array<number>} Transform\n * @api\n */\n/**\n * Collection of affine 2d transformation functions. The functions work on an\n * array of 6 elements. The element order is compatible with the [SVGMatrix\n * interface](https://developer.mozilla.org/en-US/docs/Web/API/SVGMatrix) and is\n * a subset (elements a to f) of a 3×3 matrix:\n * ```\n * [ a c e ]\n * [ b d f ]\n * [ 0 0 1 ]\n * ```\n */\n/**\n * @private\n * @type {Transform}\n */\nvar tmp_ = new Array(6);\n/**\n * Create an identity transform.\n * @return {!Transform} Identity transform.\n */\nexport function create() {\n    return [1, 0, 0, 1, 0, 0];\n}\n/**\n * Resets the given transform to an identity transform.\n * @param {!Transform} transform Transform.\n * @return {!Transform} Transform.\n */\nexport function reset(transform) {\n    return set(transform, 1, 0, 0, 1, 0, 0);\n}\n/**\n * Multiply the underlying matrices of two transforms and return the result in\n * the first transform.\n * @param {!Transform} transform1 Transform parameters of matrix 1.\n * @param {!Transform} transform2 Transform parameters of matrix 2.\n * @return {!Transform} transform1 multiplied with transform2.\n */\nexport function multiply(transform1, transform2) {\n    var a1 = transform1[0];\n    var b1 = transform1[1];\n    var c1 = transform1[2];\n    var d1 = transform1[3];\n    var e1 = transform1[4];\n    var f1 = transform1[5];\n    var a2 = transform2[0];\n    var b2 = transform2[1];\n    var c2 = transform2[2];\n    var d2 = transform2[3];\n    var e2 = transform2[4];\n    var f2 = transform2[5];\n    transform1[0] = a1 * a2 + c1 * b2;\n    transform1[1] = b1 * a2 + d1 * b2;\n    transform1[2] = a1 * c2 + c1 * d2;\n    transform1[3] = b1 * c2 + d1 * d2;\n    transform1[4] = a1 * e2 + c1 * f2 + e1;\n    transform1[5] = b1 * e2 + d1 * f2 + f1;\n    return transform1;\n}\n/**\n * Set the transform components a-f on a given transform.\n * @param {!Transform} transform Transform.\n * @param {number} a The a component of the transform.\n * @param {number} b The b component of the transform.\n * @param {number} c The c component of the transform.\n * @param {number} d The d component of the transform.\n * @param {number} e The e component of the transform.\n * @param {number} f The f component of the transform.\n * @return {!Transform} Matrix with transform applied.\n */\nexport function set(transform, a, b, c, d, e, f) {\n    transform[0] = a;\n    transform[1] = b;\n    transform[2] = c;\n    transform[3] = d;\n    transform[4] = e;\n    transform[5] = f;\n    return transform;\n}\n/**\n * Set transform on one matrix from another matrix.\n * @param {!Transform} transform1 Matrix to set transform to.\n * @param {!Transform} transform2 Matrix to set transform from.\n * @return {!Transform} transform1 with transform from transform2 applied.\n */\nexport function setFromArray(transform1, transform2) {\n    transform1[0] = transform2[0];\n    transform1[1] = transform2[1];\n    transform1[2] = transform2[2];\n    transform1[3] = transform2[3];\n    transform1[4] = transform2[4];\n    transform1[5] = transform2[5];\n    return transform1;\n}\n/**\n * Transforms the given coordinate with the given transform returning the\n * resulting, transformed coordinate. The coordinate will be modified in-place.\n *\n * @param {Transform} transform The transformation.\n * @param {import(\"./coordinate.js\").Coordinate|import(\"./pixel.js\").Pixel} coordinate The coordinate to transform.\n * @return {import(\"./coordinate.js\").Coordinate|import(\"./pixel.js\").Pixel} return coordinate so that operations can be\n *     chained together.\n */\nexport function apply(transform, coordinate) {\n    var x = coordinate[0];\n    var y = coordinate[1];\n    coordinate[0] = transform[0] * x + transform[2] * y + transform[4];\n    coordinate[1] = transform[1] * x + transform[3] * y + transform[5];\n    return coordinate;\n}\n/**\n * Applies rotation to the given transform.\n * @param {!Transform} transform Transform.\n * @param {number} angle Angle in radians.\n * @return {!Transform} The rotated transform.\n */\nexport function rotate(transform, angle) {\n    var cos = Math.cos(angle);\n    var sin = Math.sin(angle);\n    return multiply(transform, set(tmp_, cos, sin, -sin, cos, 0, 0));\n}\n/**\n * Applies scale to a given transform.\n * @param {!Transform} transform Transform.\n * @param {number} x Scale factor x.\n * @param {number} y Scale factor y.\n * @return {!Transform} The scaled transform.\n */\nexport function scale(transform, x, y) {\n    return multiply(transform, set(tmp_, x, 0, 0, y, 0, 0));\n}\n/**\n * Creates a scale transform.\n * @param {!Transform} target Transform to overwrite.\n * @param {number} x Scale factor x.\n * @param {number} y Scale factor y.\n * @return {!Transform} The scale transform.\n */\nexport function makeScale(target, x, y) {\n    return set(target, x, 0, 0, y, 0, 0);\n}\n/**\n * Applies translation to the given transform.\n * @param {!Transform} transform Transform.\n * @param {number} dx Translation x.\n * @param {number} dy Translation y.\n * @return {!Transform} The translated transform.\n */\nexport function translate(transform, dx, dy) {\n    return multiply(transform, set(tmp_, 1, 0, 0, 1, dx, dy));\n}\n/**\n * Creates a composite transform given an initial translation, scale, rotation, and\n * final translation (in that order only, not commutative).\n * @param {!Transform} transform The transform (will be modified in place).\n * @param {number} dx1 Initial translation x.\n * @param {number} dy1 Initial translation y.\n * @param {number} sx Scale factor x.\n * @param {number} sy Scale factor y.\n * @param {number} angle Rotation (in counter-clockwise radians).\n * @param {number} dx2 Final translation x.\n * @param {number} dy2 Final translation y.\n * @return {!Transform} The composite transform.\n */\nexport function compose(transform, dx1, dy1, sx, sy, angle, dx2, dy2) {\n    var sin = Math.sin(angle);\n    var cos = Math.cos(angle);\n    transform[0] = sx * cos;\n    transform[1] = sy * sin;\n    transform[2] = -sx * sin;\n    transform[3] = sy * cos;\n    transform[4] = dx2 * sx * cos - dy2 * sx * sin + dx1;\n    transform[5] = dx2 * sy * sin + dy2 * sy * cos + dy1;\n    return transform;\n}\n/**\n * Creates a composite transform given an initial translation, scale, rotation, and\n * final translation (in that order only, not commutative). The resulting transform\n * string can be applied as `transform` porperty of an HTMLElement's style.\n * @param {number} dx1 Initial translation x.\n * @param {number} dy1 Initial translation y.\n * @param {number} sx Scale factor x.\n * @param {number} sy Scale factor y.\n * @param {number} angle Rotation (in counter-clockwise radians).\n * @param {number} dx2 Final translation x.\n * @param {number} dy2 Final translation y.\n * @return {string} The composite css transform.\n * @api\n */\nexport function composeCssTransform(dx1, dy1, sx, sy, angle, dx2, dy2) {\n    return toString(compose(create(), dx1, dy1, sx, sy, angle, dx2, dy2));\n}\n/**\n * Invert the given transform.\n * @param {!Transform} source The source transform to invert.\n * @return {!Transform} The inverted (source) transform.\n */\nexport function invert(source) {\n    return makeInverse(source, source);\n}\n/**\n * Invert the given transform.\n * @param {!Transform} target Transform to be set as the inverse of\n *     the source transform.\n * @param {!Transform} source The source transform to invert.\n * @return {!Transform} The inverted (target) transform.\n */\nexport function makeInverse(target, source) {\n    var det = determinant(source);\n    assert(det !== 0, 32); // Transformation matrix cannot be inverted\n    var a = source[0];\n    var b = source[1];\n    var c = source[2];\n    var d = source[3];\n    var e = source[4];\n    var f = source[5];\n    target[0] = d / det;\n    target[1] = -b / det;\n    target[2] = -c / det;\n    target[3] = a / det;\n    target[4] = (c * f - d * e) / det;\n    target[5] = -(a * f - b * e) / det;\n    return target;\n}\n/**\n * Returns the determinant of the given matrix.\n * @param {!Transform} mat Matrix.\n * @return {number} Determinant.\n */\nexport function determinant(mat) {\n    return mat[0] * mat[3] - mat[1] * mat[2];\n}\n/**\n * A string version of the transform.  This can be used\n * for CSS transforms.\n * @param {!Transform} mat Matrix.\n * @return {string} The transform as a string.\n */\nexport function toString(mat) {\n    return 'matrix(' + mat.join(', ') + ')';\n}\n//# sourceMappingURL=transform.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/Geometry\n */\nimport { abstract } from '../util.js';\nimport BaseObject from '../Object.js';\nimport { createEmpty, getHeight, returnOrUpdate } from '../extent.js';\nimport { transform2D } from './flat/transform.js';\nimport { get as getProjection, getTransform } from '../proj.js';\nimport Units from '../proj/Units.js';\nimport { create as createTransform, compose as composeTransform } from '../transform.js';\nimport { memoizeOne } from '../functions.js';\n/**\n * @type {import(\"../transform.js\").Transform}\n */\nvar tmpTransform = createTransform();\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for vector geometries.\n *\n * To get notified of changes to the geometry, register a listener for the\n * generic `change` event on your geometry instance.\n *\n * @abstract\n * @api\n */\nvar Geometry = /** @class */ (function (_super) {\n    __extends(Geometry, _super);\n    function Geometry() {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {import(\"../extent.js\").Extent}\n         */\n        _this.extent_ = createEmpty();\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.extentRevision_ = -1;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.simplifiedGeometryMaxMinSquaredTolerance = 0;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.simplifiedGeometryRevision = 0;\n        /**\n         * Get a transformed and simplified version of the geometry.\n         * @abstract\n         * @param {number} revision The geometry revision.\n         * @param {number} squaredTolerance Squared tolerance.\n         * @param {import(\"../proj.js\").TransformFunction} [opt_transform] Optional transform function.\n         * @return {Geometry} Simplified geometry.\n         */\n        _this.simplifyTransformedInternal = memoizeOne(function (revision, squaredTolerance, opt_transform) {\n            if (!opt_transform) {\n                return this.getSimplifiedGeometry(squaredTolerance);\n            }\n            var clone = this.clone();\n            clone.applyTransform(opt_transform);\n            return clone.getSimplifiedGeometry(squaredTolerance);\n        });\n        return _this;\n    }\n    /**\n     * Get a transformed and simplified version of the geometry.\n     * @abstract\n     * @param {number} squaredTolerance Squared tolerance.\n     * @param {import(\"../proj.js\").TransformFunction} [opt_transform] Optional transform function.\n     * @return {Geometry} Simplified geometry.\n     */\n    Geometry.prototype.simplifyTransformed = function (squaredTolerance, opt_transform) {\n        return this.simplifyTransformedInternal(this.getRevision(), squaredTolerance, opt_transform);\n    };\n    /**\n     * Make a complete copy of the geometry.\n     * @abstract\n     * @return {!Geometry} Clone.\n     */\n    Geometry.prototype.clone = function () {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @param {number} x X.\n     * @param {number} y Y.\n     * @param {import(\"../coordinate.js\").Coordinate} closestPoint Closest point.\n     * @param {number} minSquaredDistance Minimum squared distance.\n     * @return {number} Minimum squared distance.\n     */\n    Geometry.prototype.closestPointXY = function (x, y, closestPoint, minSquaredDistance) {\n        return abstract();\n    };\n    /**\n     * @param {number} x X.\n     * @param {number} y Y.\n     * @return {boolean} Contains (x, y).\n     */\n    Geometry.prototype.containsXY = function (x, y) {\n        var coord = this.getClosestPoint([x, y]);\n        return coord[0] === x && coord[1] === y;\n    };\n    /**\n     * Return the closest point of the geometry to the passed point as\n     * {@link module:ol/coordinate~Coordinate coordinate}.\n     * @param {import(\"../coordinate.js\").Coordinate} point Point.\n     * @param {import(\"../coordinate.js\").Coordinate=} opt_closestPoint Closest point.\n     * @return {import(\"../coordinate.js\").Coordinate} Closest point.\n     * @api\n     */\n    Geometry.prototype.getClosestPoint = function (point, opt_closestPoint) {\n        var closestPoint = opt_closestPoint ? opt_closestPoint : [NaN, NaN];\n        this.closestPointXY(point[0], point[1], closestPoint, Infinity);\n        return closestPoint;\n    };\n    /**\n     * Returns true if this geometry includes the specified coordinate. If the\n     * coordinate is on the boundary of the geometry, returns false.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @return {boolean} Contains coordinate.\n     * @api\n     */\n    Geometry.prototype.intersectsCoordinate = function (coordinate) {\n        return this.containsXY(coordinate[0], coordinate[1]);\n    };\n    /**\n     * @abstract\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @protected\n     * @return {import(\"../extent.js\").Extent} extent Extent.\n     */\n    Geometry.prototype.computeExtent = function (extent) {\n        return abstract();\n    };\n    /**\n     * Get the extent of the geometry.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Extent.\n     * @return {import(\"../extent.js\").Extent} extent Extent.\n     * @api\n     */\n    Geometry.prototype.getExtent = function (opt_extent) {\n        if (this.extentRevision_ != this.getRevision()) {\n            this.extent_ = this.computeExtent(this.extent_);\n            this.extentRevision_ = this.getRevision();\n        }\n        return returnOrUpdate(this.extent_, opt_extent);\n    };\n    /**\n     * Rotate the geometry around a given coordinate. This modifies the geometry\n     * coordinates in place.\n     * @abstract\n     * @param {number} angle Rotation angle in radians.\n     * @param {import(\"../coordinate.js\").Coordinate} anchor The rotation center.\n     * @api\n     */\n    Geometry.prototype.rotate = function (angle, anchor) {\n        abstract();\n    };\n    /**\n     * Scale the geometry (with an optional origin).  This modifies the geometry\n     * coordinates in place.\n     * @abstract\n     * @param {number} sx The scaling factor in the x-direction.\n     * @param {number=} opt_sy The scaling factor in the y-direction (defaults to\n     *     sx).\n     * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor The scale origin (defaults to the center\n     *     of the geometry extent).\n     * @api\n     */\n    Geometry.prototype.scale = function (sx, opt_sy, opt_anchor) {\n        abstract();\n    };\n    /**\n     * Create a simplified version of this geometry.  For linestrings, this uses\n     * the [Douglas Peucker](https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm)\n     * algorithm.  For polygons, a quantization-based\n     * simplification is used to preserve topology.\n     * @param {number} tolerance The tolerance distance for simplification.\n     * @return {Geometry} A new, simplified version of the original geometry.\n     * @api\n     */\n    Geometry.prototype.simplify = function (tolerance) {\n        return this.getSimplifiedGeometry(tolerance * tolerance);\n    };\n    /**\n     * Create a simplified version of this geometry using the Douglas Peucker\n     * algorithm.\n     * See https://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm.\n     * @abstract\n     * @param {number} squaredTolerance Squared tolerance.\n     * @return {Geometry} Simplified geometry.\n     */\n    Geometry.prototype.getSimplifiedGeometry = function (squaredTolerance) {\n        return abstract();\n    };\n    /**\n     * Get the type of this geometry.\n     * @abstract\n     * @return {import(\"./GeometryType.js\").default} Geometry type.\n     */\n    Geometry.prototype.getType = function () {\n        return abstract();\n    };\n    /**\n     * Apply a transform function to the coordinates of the geometry.\n     * The geometry is modified in place.\n     * If you do not want the geometry modified in place, first `clone()` it and\n     * then use this function on the clone.\n     * @abstract\n     * @param {import(\"../proj.js\").TransformFunction} transformFn Transform function.\n     * Called with a flat array of geometry coordinates.\n     */\n    Geometry.prototype.applyTransform = function (transformFn) {\n        abstract();\n    };\n    /**\n     * Test if the geometry and the passed extent intersect.\n     * @abstract\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @return {boolean} `true` if the geometry and the extent intersect.\n     */\n    Geometry.prototype.intersectsExtent = function (extent) {\n        return abstract();\n    };\n    /**\n     * Translate the geometry.  This modifies the geometry coordinates in place.  If\n     * instead you want a new geometry, first `clone()` this geometry.\n     * @abstract\n     * @param {number} deltaX Delta X.\n     * @param {number} deltaY Delta Y.\n     * @api\n     */\n    Geometry.prototype.translate = function (deltaX, deltaY) {\n        abstract();\n    };\n    /**\n     * Transform each coordinate of the geometry from one coordinate reference\n     * system to another. The geometry is modified in place.\n     * For example, a line will be transformed to a line and a circle to a circle.\n     * If you do not want the geometry modified in place, first `clone()` it and\n     * then use this function on the clone.\n     *\n     * @param {import(\"../proj.js\").ProjectionLike} source The current projection.  Can be a\n     *     string identifier or a {@link module:ol/proj/Projection~Projection} object.\n     * @param {import(\"../proj.js\").ProjectionLike} destination The desired projection.  Can be a\n     *     string identifier or a {@link module:ol/proj/Projection~Projection} object.\n     * @return {Geometry} This geometry.  Note that original geometry is\n     *     modified in place.\n     * @api\n     */\n    Geometry.prototype.transform = function (source, destination) {\n        /** @type {import(\"../proj/Projection.js\").default} */\n        var sourceProj = getProjection(source);\n        var transformFn = sourceProj.getUnits() == Units.TILE_PIXELS ?\n            function (inCoordinates, outCoordinates, stride) {\n                var pixelExtent = sourceProj.getExtent();\n                var projectedExtent = sourceProj.getWorldExtent();\n                var scale = getHeight(projectedExtent) / getHeight(pixelExtent);\n                composeTransform(tmpTransform, projectedExtent[0], projectedExtent[3], scale, -scale, 0, 0, 0);\n                transform2D(inCoordinates, 0, inCoordinates.length, stride, tmpTransform, outCoordinates);\n                return getTransform(sourceProj, destination)(inCoordinates, outCoordinates, stride);\n            } :\n            getTransform(sourceProj, destination);\n        this.applyTransform(transformFn);\n        return this;\n    };\n    return Geometry;\n}(BaseObject));\nexport default Geometry;\n//# sourceMappingURL=Geometry.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/SimpleGeometry\n */\nimport { abstract } from '../util.js';\nimport { createOrUpdateFromFlatCoordinates, getCenter } from '../extent.js';\nimport Geometry from './Geometry.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport { rotate, scale, translate, transform2D } from './flat/transform.js';\n/**\n * @classdesc\n * Abstract base class; only used for creating subclasses; do not instantiate\n * in apps, as cannot be rendered.\n *\n * @abstract\n * @api\n */\nvar SimpleGeometry = /** @class */ (function (_super) {\n    __extends(SimpleGeometry, _super);\n    function SimpleGeometry() {\n        var _this = _super.call(this) || this;\n        /**\n         * @protected\n         * @type {GeometryLayout}\n         */\n        _this.layout = GeometryLayout.XY;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.stride = 2;\n        /**\n         * @protected\n         * @type {Array<number>}\n         */\n        _this.flatCoordinates = null;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    SimpleGeometry.prototype.computeExtent = function (extent) {\n        return createOrUpdateFromFlatCoordinates(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, extent);\n    };\n    /**\n     * @abstract\n     * @return {Array<*>} Coordinates.\n     */\n    SimpleGeometry.prototype.getCoordinates = function () {\n        return abstract();\n    };\n    /**\n     * Return the first coordinate of the geometry.\n     * @return {import(\"../coordinate.js\").Coordinate} First coordinate.\n     * @api\n     */\n    SimpleGeometry.prototype.getFirstCoordinate = function () {\n        return this.flatCoordinates.slice(0, this.stride);\n    };\n    /**\n     * @return {Array<number>} Flat coordinates.\n     */\n    SimpleGeometry.prototype.getFlatCoordinates = function () {\n        return this.flatCoordinates;\n    };\n    /**\n     * Return the last coordinate of the geometry.\n     * @return {import(\"../coordinate.js\").Coordinate} Last point.\n     * @api\n     */\n    SimpleGeometry.prototype.getLastCoordinate = function () {\n        return this.flatCoordinates.slice(this.flatCoordinates.length - this.stride);\n    };\n    /**\n     * Return the {@link module:ol/geom/GeometryLayout layout} of the geometry.\n     * @return {GeometryLayout} Layout.\n     * @api\n     */\n    SimpleGeometry.prototype.getLayout = function () {\n        return this.layout;\n    };\n    /**\n     * @inheritDoc\n     */\n    SimpleGeometry.prototype.getSimplifiedGeometry = function (squaredTolerance) {\n        if (this.simplifiedGeometryRevision !== this.getRevision()) {\n            this.simplifiedGeometryMaxMinSquaredTolerance = 0;\n            this.simplifiedGeometryRevision = this.getRevision();\n        }\n        // If squaredTolerance is negative or if we know that simplification will not\n        // have any effect then just return this.\n        if (squaredTolerance < 0 ||\n            (this.simplifiedGeometryMaxMinSquaredTolerance !== 0 &&\n                squaredTolerance <= this.simplifiedGeometryMaxMinSquaredTolerance)) {\n            return this;\n        }\n        var simplifiedGeometry = this.getSimplifiedGeometryInternal(squaredTolerance);\n        var simplifiedFlatCoordinates = simplifiedGeometry.getFlatCoordinates();\n        if (simplifiedFlatCoordinates.length < this.flatCoordinates.length) {\n            return simplifiedGeometry;\n        }\n        else {\n            // Simplification did not actually remove any coordinates.  We now know\n            // that any calls to getSimplifiedGeometry with a squaredTolerance less\n            // than or equal to the current squaredTolerance will also not have any\n            // effect.  This allows us to short circuit simplification (saving CPU\n            // cycles) and prevents the cache of simplified geometries from filling\n            // up with useless identical copies of this geometry (saving memory).\n            this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance;\n            return this;\n        }\n    };\n    /**\n     * @param {number} squaredTolerance Squared tolerance.\n     * @return {SimpleGeometry} Simplified geometry.\n     * @protected\n     */\n    SimpleGeometry.prototype.getSimplifiedGeometryInternal = function (squaredTolerance) {\n        return this;\n    };\n    /**\n     * @return {number} Stride.\n     */\n    SimpleGeometry.prototype.getStride = function () {\n        return this.stride;\n    };\n    /**\n     * @param {GeometryLayout} layout Layout.\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     */\n    SimpleGeometry.prototype.setFlatCoordinates = function (layout, flatCoordinates) {\n        this.stride = getStrideForLayout(layout);\n        this.layout = layout;\n        this.flatCoordinates = flatCoordinates;\n    };\n    /**\n     * @abstract\n     * @param {!Array<*>} coordinates Coordinates.\n     * @param {GeometryLayout=} opt_layout Layout.\n     */\n    SimpleGeometry.prototype.setCoordinates = function (coordinates, opt_layout) {\n        abstract();\n    };\n    /**\n     * @param {GeometryLayout|undefined} layout Layout.\n     * @param {Array<*>} coordinates Coordinates.\n     * @param {number} nesting Nesting.\n     * @protected\n     */\n    SimpleGeometry.prototype.setLayout = function (layout, coordinates, nesting) {\n        /** @type {number} */\n        var stride;\n        if (layout) {\n            stride = getStrideForLayout(layout);\n        }\n        else {\n            for (var i = 0; i < nesting; ++i) {\n                if (coordinates.length === 0) {\n                    this.layout = GeometryLayout.XY;\n                    this.stride = 2;\n                    return;\n                }\n                else {\n                    coordinates = /** @type {Array} */ (coordinates[0]);\n                }\n            }\n            stride = coordinates.length;\n            layout = getLayoutForStride(stride);\n        }\n        this.layout = layout;\n        this.stride = stride;\n    };\n    /**\n     * Apply a transform function to the coordinates of the geometry.\n     * The geometry is modified in place.\n     * If you do not want the geometry modified in place, first `clone()` it and\n     * then use this function on the clone.\n     * @param {import(\"../proj.js\").TransformFunction} transformFn Transform function.\n     * Called with a flat array of geometry coordinates.\n     * @api\n     */\n    SimpleGeometry.prototype.applyTransform = function (transformFn) {\n        if (this.flatCoordinates) {\n            transformFn(this.flatCoordinates, this.flatCoordinates, this.stride);\n            this.changed();\n        }\n    };\n    /**\n     * Rotate the geometry around a given coordinate. This modifies the geometry\n     * coordinates in place.\n     * @param {number} angle Rotation angle in radians.\n     * @param {import(\"../coordinate.js\").Coordinate} anchor The rotation center.\n     * @api\n     */\n    SimpleGeometry.prototype.rotate = function (angle, anchor) {\n        var flatCoordinates = this.getFlatCoordinates();\n        if (flatCoordinates) {\n            var stride = this.getStride();\n            rotate(flatCoordinates, 0, flatCoordinates.length, stride, angle, anchor, flatCoordinates);\n            this.changed();\n        }\n    };\n    /**\n     * Scale the geometry (with an optional origin).  This modifies the geometry\n     * coordinates in place.\n      * @param {number} sx The scaling factor in the x-direction.\n     * @param {number=} opt_sy The scaling factor in the y-direction (defaults to\n     *     sx).\n     * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor The scale origin (defaults to the center\n     *     of the geometry extent).\n     * @api\n     */\n    SimpleGeometry.prototype.scale = function (sx, opt_sy, opt_anchor) {\n        var sy = opt_sy;\n        if (sy === undefined) {\n            sy = sx;\n        }\n        var anchor = opt_anchor;\n        if (!anchor) {\n            anchor = getCenter(this.getExtent());\n        }\n        var flatCoordinates = this.getFlatCoordinates();\n        if (flatCoordinates) {\n            var stride = this.getStride();\n            scale(flatCoordinates, 0, flatCoordinates.length, stride, sx, sy, anchor, flatCoordinates);\n            this.changed();\n        }\n    };\n    /**\n     * Translate the geometry.  This modifies the geometry coordinates in place.  If\n     * instead you want a new geometry, first `clone()` this geometry.\n     * @param {number} deltaX Delta X.\n     * @param {number} deltaY Delta Y.\n     * @api\n     */\n    SimpleGeometry.prototype.translate = function (deltaX, deltaY) {\n        var flatCoordinates = this.getFlatCoordinates();\n        if (flatCoordinates) {\n            var stride = this.getStride();\n            translate(flatCoordinates, 0, flatCoordinates.length, stride, deltaX, deltaY, flatCoordinates);\n            this.changed();\n        }\n    };\n    return SimpleGeometry;\n}(Geometry));\n/**\n * @param {number} stride Stride.\n * @return {GeometryLayout} layout Layout.\n */\nfunction getLayoutForStride(stride) {\n    var layout;\n    if (stride == 2) {\n        layout = GeometryLayout.XY;\n    }\n    else if (stride == 3) {\n        layout = GeometryLayout.XYZ;\n    }\n    else if (stride == 4) {\n        layout = GeometryLayout.XYZM;\n    }\n    return (\n    /** @type {GeometryLayout} */ (layout));\n}\n/**\n * @param {GeometryLayout} layout Layout.\n * @return {number} Stride.\n */\nexport function getStrideForLayout(layout) {\n    var stride;\n    if (layout == GeometryLayout.XY) {\n        stride = 2;\n    }\n    else if (layout == GeometryLayout.XYZ || layout == GeometryLayout.XYM) {\n        stride = 3;\n    }\n    else if (layout == GeometryLayout.XYZM) {\n        stride = 4;\n    }\n    return /** @type {number} */ (stride);\n}\n/**\n * @param {SimpleGeometry} simpleGeometry Simple geometry.\n * @param {import(\"../transform.js\").Transform} transform Transform.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Transformed flat coordinates.\n */\nexport function transformGeom2D(simpleGeometry, transform, opt_dest) {\n    var flatCoordinates = simpleGeometry.getFlatCoordinates();\n    if (!flatCoordinates) {\n        return null;\n    }\n    else {\n        var stride = simpleGeometry.getStride();\n        return transform2D(flatCoordinates, 0, flatCoordinates.length, stride, transform, opt_dest);\n    }\n}\nexport default SimpleGeometry;\n//# sourceMappingURL=SimpleGeometry.js.map","/**\n * @module ol/geom/flat/area\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRing(flatCoordinates, offset, end, stride) {\n    var twiceArea = 0;\n    var x1 = flatCoordinates[end - stride];\n    var y1 = flatCoordinates[end - stride + 1];\n    for (; offset < end; offset += stride) {\n        var x2 = flatCoordinates[offset];\n        var y2 = flatCoordinates[offset + 1];\n        twiceArea += y1 * x2 - x1 * y2;\n        x1 = x2;\n        y1 = y2;\n    }\n    return twiceArea / 2;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRings(flatCoordinates, offset, ends, stride) {\n    var area = 0;\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        area += linearRing(flatCoordinates, offset, end, stride);\n        offset = end;\n    }\n    return area;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @return {number} Area.\n */\nexport function linearRingss(flatCoordinates, offset, endss, stride) {\n    var area = 0;\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        area += linearRings(flatCoordinates, offset, ends, stride);\n        offset = ends[ends.length - 1];\n    }\n    return area;\n}\n//# sourceMappingURL=area.js.map","/**\n * @module ol/geom/flat/closest\n */\nimport { lerp, squaredDistance as squaredDx } from '../../math.js';\n/**\n * Returns the point on the 2D line segment flatCoordinates[offset1] to\n * flatCoordinates[offset2] that is closest to the point (x, y).  Extra\n * dimensions are linearly interpolated.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset1 Offset 1.\n * @param {number} offset2 Offset 2.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n */\nfunction assignClosest(flatCoordinates, offset1, offset2, stride, x, y, closestPoint) {\n    var x1 = flatCoordinates[offset1];\n    var y1 = flatCoordinates[offset1 + 1];\n    var dx = flatCoordinates[offset2] - x1;\n    var dy = flatCoordinates[offset2 + 1] - y1;\n    var offset;\n    if (dx === 0 && dy === 0) {\n        offset = offset1;\n    }\n    else {\n        var t = ((x - x1) * dx + (y - y1) * dy) / (dx * dx + dy * dy);\n        if (t > 1) {\n            offset = offset2;\n        }\n        else if (t > 0) {\n            for (var i = 0; i < stride; ++i) {\n                closestPoint[i] = lerp(flatCoordinates[offset1 + i], flatCoordinates[offset2 + i], t);\n            }\n            closestPoint.length = stride;\n            return;\n        }\n        else {\n            offset = offset1;\n        }\n    }\n    for (var i = 0; i < stride; ++i) {\n        closestPoint[i] = flatCoordinates[offset + i];\n    }\n    closestPoint.length = stride;\n}\n/**\n * Return the squared of the largest distance between any pair of consecutive\n * coordinates.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function maxSquaredDelta(flatCoordinates, offset, end, stride, max) {\n    var x1 = flatCoordinates[offset];\n    var y1 = flatCoordinates[offset + 1];\n    for (offset += stride; offset < end; offset += stride) {\n        var x2 = flatCoordinates[offset];\n        var y2 = flatCoordinates[offset + 1];\n        var squaredDelta = squaredDx(x1, y1, x2, y2);\n        if (squaredDelta > max) {\n            max = squaredDelta;\n        }\n        x1 = x2;\n        y1 = y2;\n    }\n    return max;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function arrayMaxSquaredDelta(flatCoordinates, offset, ends, stride, max) {\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        max = maxSquaredDelta(flatCoordinates, offset, end, stride, max);\n        offset = end;\n    }\n    return max;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} max Max squared delta.\n * @return {number} Max squared delta.\n */\nexport function multiArrayMaxSquaredDelta(flatCoordinates, offset, endss, stride, max) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        max = arrayMaxSquaredDelta(flatCoordinates, offset, ends, stride, max);\n        offset = ends[ends.length - 1];\n    }\n    return max;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestPoint(flatCoordinates, offset, end, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance, opt_tmpPoint) {\n    if (offset == end) {\n        return minSquaredDistance;\n    }\n    var i, squaredDistance;\n    if (maxDelta === 0) {\n        // All points are identical, so just test the first point.\n        squaredDistance = squaredDx(x, y, flatCoordinates[offset], flatCoordinates[offset + 1]);\n        if (squaredDistance < minSquaredDistance) {\n            for (i = 0; i < stride; ++i) {\n                closestPoint[i] = flatCoordinates[offset + i];\n            }\n            closestPoint.length = stride;\n            return squaredDistance;\n        }\n        else {\n            return minSquaredDistance;\n        }\n    }\n    var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n    var index = offset + stride;\n    while (index < end) {\n        assignClosest(flatCoordinates, index - stride, index, stride, x, y, tmpPoint);\n        squaredDistance = squaredDx(x, y, tmpPoint[0], tmpPoint[1]);\n        if (squaredDistance < minSquaredDistance) {\n            minSquaredDistance = squaredDistance;\n            for (i = 0; i < stride; ++i) {\n                closestPoint[i] = tmpPoint[i];\n            }\n            closestPoint.length = stride;\n            index += stride;\n        }\n        else {\n            // Skip ahead multiple points, because we know that all the skipped\n            // points cannot be any closer than the closest point we have found so\n            // far.  We know this because we know how close the current point is, how\n            // close the closest point we have found so far is, and the maximum\n            // distance between consecutive points.  For example, if we're currently\n            // at distance 10, the best we've found so far is 3, and that the maximum\n            // distance between consecutive points is 2, then we'll need to skip at\n            // least (10 - 3) / 2 == 3 (rounded down) points to have any chance of\n            // finding a closer point.  We use Math.max(..., 1) to ensure that we\n            // always advance at least one point, to avoid an infinite loop.\n            index += stride * Math.max(((Math.sqrt(squaredDistance) -\n                Math.sqrt(minSquaredDistance)) / maxDelta) | 0, 1);\n        }\n    }\n    if (isRing) {\n        // Check the closing segment.\n        assignClosest(flatCoordinates, end - stride, offset, stride, x, y, tmpPoint);\n        squaredDistance = squaredDx(x, y, tmpPoint[0], tmpPoint[1]);\n        if (squaredDistance < minSquaredDistance) {\n            minSquaredDistance = squaredDistance;\n            for (i = 0; i < stride; ++i) {\n                closestPoint[i] = tmpPoint[i];\n            }\n            closestPoint.length = stride;\n        }\n    }\n    return minSquaredDistance;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestArrayPoint(flatCoordinates, offset, ends, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance, opt_tmpPoint) {\n    var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        minSquaredDistance = assignClosestPoint(flatCoordinates, offset, end, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);\n        offset = end;\n    }\n    return minSquaredDistance;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} maxDelta Max delta.\n * @param {boolean} isRing Is ring.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {Array<number>} closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array<number>=} opt_tmpPoint Temporary point object.\n * @return {number} Minimum squared distance.\n */\nexport function assignClosestMultiArrayPoint(flatCoordinates, offset, endss, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance, opt_tmpPoint) {\n    var tmpPoint = opt_tmpPoint ? opt_tmpPoint : [NaN, NaN];\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        minSquaredDistance = assignClosestArrayPoint(flatCoordinates, offset, ends, stride, maxDelta, isRing, x, y, closestPoint, minSquaredDistance, tmpPoint);\n        offset = ends[ends.length - 1];\n    }\n    return minSquaredDistance;\n}\n//# sourceMappingURL=closest.js.map","/**\n * @module ol/geom/flat/deflate\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n * @param {number} stride Stride.\n * @return {number} offset Offset.\n */\nexport function deflateCoordinate(flatCoordinates, offset, coordinate, stride) {\n    for (var i = 0, ii = coordinate.length; i < ii; ++i) {\n        flatCoordinates[offset++] = coordinate[i];\n    }\n    return offset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<import(\"../../coordinate.js\").Coordinate>} coordinates Coordinates.\n * @param {number} stride Stride.\n * @return {number} offset Offset.\n */\nexport function deflateCoordinates(flatCoordinates, offset, coordinates, stride) {\n    for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n        var coordinate = coordinates[i];\n        for (var j = 0; j < stride; ++j) {\n            flatCoordinates[offset++] = coordinate[j];\n        }\n    }\n    return offset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<import(\"../../coordinate.js\").Coordinate>>} coordinatess Coordinatess.\n * @param {number} stride Stride.\n * @param {Array<number>=} opt_ends Ends.\n * @return {Array<number>} Ends.\n */\nexport function deflateCoordinatesArray(flatCoordinates, offset, coordinatess, stride, opt_ends) {\n    var ends = opt_ends ? opt_ends : [];\n    var i = 0;\n    for (var j = 0, jj = coordinatess.length; j < jj; ++j) {\n        var end = deflateCoordinates(flatCoordinates, offset, coordinatess[j], stride);\n        ends[i++] = end;\n        offset = end;\n    }\n    ends.length = i;\n    return ends;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>} coordinatesss Coordinatesss.\n * @param {number} stride Stride.\n * @param {Array<Array<number>>=} opt_endss Endss.\n * @return {Array<Array<number>>} Endss.\n */\nexport function deflateMultiCoordinatesArray(flatCoordinates, offset, coordinatesss, stride, opt_endss) {\n    var endss = opt_endss ? opt_endss : [];\n    var i = 0;\n    for (var j = 0, jj = coordinatesss.length; j < jj; ++j) {\n        var ends = deflateCoordinatesArray(flatCoordinates, offset, coordinatesss[j], stride, endss[i]);\n        endss[i++] = ends;\n        offset = ends[ends.length - 1];\n    }\n    endss.length = i;\n    return endss;\n}\n//# sourceMappingURL=deflate.js.map","/**\n * @module ol/geom/flat/inflate\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {Array<import(\"../../coordinate.js\").Coordinate>=} opt_coordinates Coordinates.\n * @return {Array<import(\"../../coordinate.js\").Coordinate>} Coordinates.\n */\nexport function inflateCoordinates(flatCoordinates, offset, end, stride, opt_coordinates) {\n    var coordinates = opt_coordinates !== undefined ? opt_coordinates : [];\n    var i = 0;\n    for (var j = offset; j < end; j += stride) {\n        coordinates[i++] = flatCoordinates.slice(j, j + stride);\n    }\n    coordinates.length = i;\n    return coordinates;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {Array<Array<import(\"../../coordinate.js\").Coordinate>>=} opt_coordinatess Coordinatess.\n * @return {Array<Array<import(\"../../coordinate.js\").Coordinate>>} Coordinatess.\n */\nexport function inflateCoordinatesArray(flatCoordinates, offset, ends, stride, opt_coordinatess) {\n    var coordinatess = opt_coordinatess !== undefined ? opt_coordinatess : [];\n    var i = 0;\n    for (var j = 0, jj = ends.length; j < jj; ++j) {\n        var end = ends[j];\n        coordinatess[i++] = inflateCoordinates(flatCoordinates, offset, end, stride, coordinatess[i]);\n        offset = end;\n    }\n    coordinatess.length = i;\n    return coordinatess;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>=} opt_coordinatesss\n *     Coordinatesss.\n * @return {Array<Array<Array<import(\"../../coordinate.js\").Coordinate>>>} Coordinatesss.\n */\nexport function inflateMultiCoordinatesArray(flatCoordinates, offset, endss, stride, opt_coordinatesss) {\n    var coordinatesss = opt_coordinatesss !== undefined ? opt_coordinatesss : [];\n    var i = 0;\n    for (var j = 0, jj = endss.length; j < jj; ++j) {\n        var ends = endss[j];\n        coordinatesss[i++] = inflateCoordinatesArray(flatCoordinates, offset, ends, stride, coordinatesss[i]);\n        offset = ends[ends.length - 1];\n    }\n    coordinatesss.length = i;\n    return coordinatesss;\n}\n//# sourceMappingURL=inflate.js.map","/**\n * @module ol/geom/flat/simplify\n */\n// Based on simplify-js https://github.com/mourner/simplify-js\n// Copyright (c) 2012, Vladimir Agafonkin\n// All rights reserved.\n//\n// Redistribution and use in source and binary forms, with or without\n// modification, are permitted provided that the following conditions are met:\n//\n//    1. Redistributions of source code must retain the above copyright notice,\n//       this list of conditions and the following disclaimer.\n//\n//    2. Redistributions in binary form must reproduce the above copyright\n//       notice, this list of conditions and the following disclaimer in the\n//       documentation and/or other materials provided with the distribution.\n//\n// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\"\n// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\n// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE\n// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\n// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\n// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\n// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\n// POSSIBILITY OF SUCH DAMAGE.\nimport { squaredSegmentDistance, squaredDistance } from '../../math.js';\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {boolean} highQuality Highest quality.\n * @param {Array<number>=} opt_simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @return {Array<number>} Simplified line string.\n */\nexport function simplifyLineString(flatCoordinates, offset, end, stride, squaredTolerance, highQuality, opt_simplifiedFlatCoordinates) {\n    var simplifiedFlatCoordinates = opt_simplifiedFlatCoordinates !== undefined ?\n        opt_simplifiedFlatCoordinates : [];\n    if (!highQuality) {\n        end = radialDistance(flatCoordinates, offset, end, stride, squaredTolerance, simplifiedFlatCoordinates, 0);\n        flatCoordinates = simplifiedFlatCoordinates;\n        offset = 0;\n        stride = 2;\n    }\n    simplifiedFlatCoordinates.length = douglasPeucker(flatCoordinates, offset, end, stride, squaredTolerance, simplifiedFlatCoordinates, 0);\n    return simplifiedFlatCoordinates;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function douglasPeucker(flatCoordinates, offset, end, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n    var n = (end - offset) / stride;\n    if (n < 3) {\n        for (; offset < end; offset += stride) {\n            simplifiedFlatCoordinates[simplifiedOffset++] =\n                flatCoordinates[offset];\n            simplifiedFlatCoordinates[simplifiedOffset++] =\n                flatCoordinates[offset + 1];\n        }\n        return simplifiedOffset;\n    }\n    /** @type {Array<number>} */\n    var markers = new Array(n);\n    markers[0] = 1;\n    markers[n - 1] = 1;\n    /** @type {Array<number>} */\n    var stack = [offset, end - stride];\n    var index = 0;\n    while (stack.length > 0) {\n        var last = stack.pop();\n        var first = stack.pop();\n        var maxSquaredDistance = 0;\n        var x1 = flatCoordinates[first];\n        var y1 = flatCoordinates[first + 1];\n        var x2 = flatCoordinates[last];\n        var y2 = flatCoordinates[last + 1];\n        for (var i = first + stride; i < last; i += stride) {\n            var x = flatCoordinates[i];\n            var y = flatCoordinates[i + 1];\n            var squaredDistance_1 = squaredSegmentDistance(x, y, x1, y1, x2, y2);\n            if (squaredDistance_1 > maxSquaredDistance) {\n                index = i;\n                maxSquaredDistance = squaredDistance_1;\n            }\n        }\n        if (maxSquaredDistance > squaredTolerance) {\n            markers[(index - offset) / stride] = 1;\n            if (first + stride < index) {\n                stack.push(first, index);\n            }\n            if (index + stride < last) {\n                stack.push(index, last);\n            }\n        }\n    }\n    for (var i = 0; i < n; ++i) {\n        if (markers[i]) {\n            simplifiedFlatCoordinates[simplifiedOffset++] =\n                flatCoordinates[offset + i * stride];\n            simplifiedFlatCoordinates[simplifiedOffset++] =\n                flatCoordinates[offset + i * stride + 1];\n        }\n    }\n    return simplifiedOffset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<number>} simplifiedEnds Simplified ends.\n * @return {number} Simplified offset.\n */\nexport function douglasPeuckerArray(flatCoordinates, offset, ends, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds) {\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        simplifiedOffset = douglasPeucker(flatCoordinates, offset, end, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset);\n        simplifiedEnds.push(simplifiedOffset);\n        offset = end;\n    }\n    return simplifiedOffset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<Array<number>>} simplifiedEndss Simplified endss.\n * @return {number} Simplified offset.\n */\nexport function douglasPeuckerMultiArray(flatCoordinates, offset, endss, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        var simplifiedEnds = [];\n        simplifiedOffset = douglasPeuckerArray(flatCoordinates, offset, ends, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);\n        simplifiedEndss.push(simplifiedEnds);\n        offset = ends[ends.length - 1];\n    }\n    return simplifiedOffset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function radialDistance(flatCoordinates, offset, end, stride, squaredTolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n    if (end <= offset + stride) {\n        // zero or one point, no simplification possible, so copy and return\n        for (; offset < end; offset += stride) {\n            simplifiedFlatCoordinates[simplifiedOffset++] = flatCoordinates[offset];\n            simplifiedFlatCoordinates[simplifiedOffset++] =\n                flatCoordinates[offset + 1];\n        }\n        return simplifiedOffset;\n    }\n    var x1 = flatCoordinates[offset];\n    var y1 = flatCoordinates[offset + 1];\n    // copy first point\n    simplifiedFlatCoordinates[simplifiedOffset++] = x1;\n    simplifiedFlatCoordinates[simplifiedOffset++] = y1;\n    var x2 = x1;\n    var y2 = y1;\n    for (offset += stride; offset < end; offset += stride) {\n        x2 = flatCoordinates[offset];\n        y2 = flatCoordinates[offset + 1];\n        if (squaredDistance(x1, y1, x2, y2) > squaredTolerance) {\n            // copy point at offset\n            simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n            simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n            x1 = x2;\n            y1 = y2;\n        }\n    }\n    if (x2 != x1 || y2 != y1) {\n        // copy last point\n        simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n        simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n    }\n    return simplifiedOffset;\n}\n/**\n * @param {number} value Value.\n * @param {number} tolerance Tolerance.\n * @return {number} Rounded value.\n */\nexport function snap(value, tolerance) {\n    return tolerance * Math.round(value / tolerance);\n}\n/**\n * Simplifies a line string using an algorithm designed by Tim Schaub.\n * Coordinates are snapped to the nearest value in a virtual grid and\n * consecutive duplicate coordinates are discarded.  This effectively preserves\n * topology as the simplification of any subsection of a line string is\n * independent of the rest of the line string.  This means that, for examples,\n * the common edge between two polygons will be simplified to the same line\n * string independently in both polygons.  This implementation uses a single\n * pass over the coordinates and eliminates intermediate collinear points.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @return {number} Simplified offset.\n */\nexport function quantize(flatCoordinates, offset, end, stride, tolerance, simplifiedFlatCoordinates, simplifiedOffset) {\n    // do nothing if the line is empty\n    if (offset == end) {\n        return simplifiedOffset;\n    }\n    // snap the first coordinate (P1)\n    var x1 = snap(flatCoordinates[offset], tolerance);\n    var y1 = snap(flatCoordinates[offset + 1], tolerance);\n    offset += stride;\n    // add the first coordinate to the output\n    simplifiedFlatCoordinates[simplifiedOffset++] = x1;\n    simplifiedFlatCoordinates[simplifiedOffset++] = y1;\n    // find the next coordinate that does not snap to the same value as the first\n    // coordinate (P2)\n    var x2, y2;\n    do {\n        x2 = snap(flatCoordinates[offset], tolerance);\n        y2 = snap(flatCoordinates[offset + 1], tolerance);\n        offset += stride;\n        if (offset == end) {\n            // all coordinates snap to the same value, the line collapses to a point\n            // push the last snapped value anyway to ensure that the output contains\n            // at least two points\n            // FIXME should we really return at least two points anyway?\n            simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n            simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n            return simplifiedOffset;\n        }\n    } while (x2 == x1 && y2 == y1);\n    while (offset < end) {\n        // snap the next coordinate (P3)\n        var x3 = snap(flatCoordinates[offset], tolerance);\n        var y3 = snap(flatCoordinates[offset + 1], tolerance);\n        offset += stride;\n        // skip P3 if it is equal to P2\n        if (x3 == x2 && y3 == y2) {\n            continue;\n        }\n        // calculate the delta between P1 and P2\n        var dx1 = x2 - x1;\n        var dy1 = y2 - y1;\n        // calculate the delta between P3 and P1\n        var dx2 = x3 - x1;\n        var dy2 = y3 - y1;\n        // if P1, P2, and P3 are colinear and P3 is further from P1 than P2 is from\n        // P1 in the same direction then P2 is on the straight line between P1 and\n        // P3\n        if ((dx1 * dy2 == dy1 * dx2) &&\n            ((dx1 < 0 && dx2 < dx1) || dx1 == dx2 || (dx1 > 0 && dx2 > dx1)) &&\n            ((dy1 < 0 && dy2 < dy1) || dy1 == dy2 || (dy1 > 0 && dy2 > dy1))) {\n            // discard P2 and set P2 = P3\n            x2 = x3;\n            y2 = y3;\n            continue;\n        }\n        // either P1, P2, and P3 are not colinear, or they are colinear but P3 is\n        // between P3 and P1 or on the opposite half of the line to P2.  add P2,\n        // and continue with P1 = P2 and P2 = P3\n        simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n        simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n        x1 = x2;\n        y1 = y2;\n        x2 = x3;\n        y2 = y3;\n    }\n    // add the last point (P2)\n    simplifiedFlatCoordinates[simplifiedOffset++] = x2;\n    simplifiedFlatCoordinates[simplifiedOffset++] = y2;\n    return simplifiedOffset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<number>} simplifiedEnds Simplified ends.\n * @return {number} Simplified offset.\n */\nexport function quantizeArray(flatCoordinates, offset, ends, stride, tolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds) {\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        simplifiedOffset = quantize(flatCoordinates, offset, end, stride, tolerance, simplifiedFlatCoordinates, simplifiedOffset);\n        simplifiedEnds.push(simplifiedOffset);\n        offset = end;\n    }\n    return simplifiedOffset;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} tolerance Tolerance.\n * @param {Array<number>} simplifiedFlatCoordinates Simplified flat\n *     coordinates.\n * @param {number} simplifiedOffset Simplified offset.\n * @param {Array<Array<number>>} simplifiedEndss Simplified endss.\n * @return {number} Simplified offset.\n */\nexport function quantizeMultiArray(flatCoordinates, offset, endss, stride, tolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEndss) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        var simplifiedEnds = [];\n        simplifiedOffset = quantizeArray(flatCoordinates, offset, ends, stride, tolerance, simplifiedFlatCoordinates, simplifiedOffset, simplifiedEnds);\n        simplifiedEndss.push(simplifiedEnds);\n        offset = ends[ends.length - 1];\n    }\n    return simplifiedOffset;\n}\n//# sourceMappingURL=simplify.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/LinearRing\n */\nimport { closestSquaredDistanceXY } from '../extent.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport GeometryType from './GeometryType.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport { linearRing as linearRingArea } from './flat/area.js';\nimport { assignClosestPoint, maxSquaredDelta } from './flat/closest.js';\nimport { deflateCoordinates } from './flat/deflate.js';\nimport { inflateCoordinates } from './flat/inflate.js';\nimport { douglasPeucker } from './flat/simplify.js';\n/**\n * @classdesc\n * Linear ring geometry. Only used as part of polygon; cannot be rendered\n * on its own.\n *\n * @api\n */\nvar LinearRing = /** @class */ (function (_super) {\n    __extends(LinearRing, _super);\n    /**\n     * @param {Array<import(\"../coordinate.js\").Coordinate>|Array<number>} coordinates Coordinates.\n     *     For internal use, flat coordinates in combination with `opt_layout` are also accepted.\n     * @param {GeometryLayout=} opt_layout Layout.\n     */\n    function LinearRing(coordinates, opt_layout) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDelta_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDeltaRevision_ = -1;\n        if (opt_layout !== undefined && !Array.isArray(coordinates[0])) {\n            _this.setFlatCoordinates(opt_layout, /** @type {Array<number>} */ (coordinates));\n        }\n        else {\n            _this.setCoordinates(/** @type {Array<import(\"../coordinate.js\").Coordinate>} */ (coordinates), opt_layout);\n        }\n        return _this;\n    }\n    /**\n     * Make a complete copy of the geometry.\n     * @return {!LinearRing} Clone.\n     * @override\n     * @api\n     */\n    LinearRing.prototype.clone = function () {\n        return new LinearRing(this.flatCoordinates.slice(), this.layout);\n    };\n    /**\n     * @inheritDoc\n     */\n    LinearRing.prototype.closestPointXY = function (x, y, closestPoint, minSquaredDistance) {\n        if (minSquaredDistance < closestSquaredDistanceXY(this.getExtent(), x, y)) {\n            return minSquaredDistance;\n        }\n        if (this.maxDeltaRevision_ != this.getRevision()) {\n            this.maxDelta_ = Math.sqrt(maxSquaredDelta(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));\n            this.maxDeltaRevision_ = this.getRevision();\n        }\n        return assignClosestPoint(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);\n    };\n    /**\n     * Return the area of the linear ring on projected plane.\n     * @return {number} Area (on projected plane).\n     * @api\n     */\n    LinearRing.prototype.getArea = function () {\n        return linearRingArea(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n    };\n    /**\n     * Return the coordinates of the linear ring.\n     * @return {Array<import(\"../coordinate.js\").Coordinate>} Coordinates.\n     * @override\n     * @api\n     */\n    LinearRing.prototype.getCoordinates = function () {\n        return inflateCoordinates(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n    };\n    /**\n     * @inheritDoc\n     */\n    LinearRing.prototype.getSimplifiedGeometryInternal = function (squaredTolerance) {\n        var simplifiedFlatCoordinates = [];\n        simplifiedFlatCoordinates.length = douglasPeucker(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, squaredTolerance, simplifiedFlatCoordinates, 0);\n        return new LinearRing(simplifiedFlatCoordinates, GeometryLayout.XY);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    LinearRing.prototype.getType = function () {\n        return GeometryType.LINEAR_RING;\n    };\n    /**\n     * @inheritDoc\n     */\n    LinearRing.prototype.intersectsExtent = function (extent) {\n        return false;\n    };\n    /**\n     * Set the coordinates of the linear ring.\n     * @param {!Array<import(\"../coordinate.js\").Coordinate>} coordinates Coordinates.\n     * @param {GeometryLayout=} opt_layout Layout.\n     * @override\n     * @api\n     */\n    LinearRing.prototype.setCoordinates = function (coordinates, opt_layout) {\n        this.setLayout(opt_layout, coordinates, 1);\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = [];\n        }\n        this.flatCoordinates.length = deflateCoordinates(this.flatCoordinates, 0, coordinates, this.stride);\n        this.changed();\n    };\n    return LinearRing;\n}(SimpleGeometry));\nexport default LinearRing;\n//# sourceMappingURL=LinearRing.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/Point\n */\nimport { createOrUpdateFromCoordinate, containsXY } from '../extent.js';\nimport GeometryType from './GeometryType.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport { deflateCoordinate } from './flat/deflate.js';\nimport { squaredDistance as squaredDx } from '../math.js';\n/**\n * @classdesc\n * Point geometry.\n *\n * @api\n */\nvar Point = /** @class */ (function (_super) {\n    __extends(Point, _super);\n    /**\n     * @param {import(\"../coordinate.js\").Coordinate} coordinates Coordinates.\n     * @param {import(\"./GeometryLayout.js\").default=} opt_layout Layout.\n     */\n    function Point(coordinates, opt_layout) {\n        var _this = _super.call(this) || this;\n        _this.setCoordinates(coordinates, opt_layout);\n        return _this;\n    }\n    /**\n     * Make a complete copy of the geometry.\n     * @return {!Point} Clone.\n     * @override\n     * @api\n     */\n    Point.prototype.clone = function () {\n        var point = new Point(this.flatCoordinates.slice(), this.layout);\n        return point;\n    };\n    /**\n     * @inheritDoc\n     */\n    Point.prototype.closestPointXY = function (x, y, closestPoint, minSquaredDistance) {\n        var flatCoordinates = this.flatCoordinates;\n        var squaredDistance = squaredDx(x, y, flatCoordinates[0], flatCoordinates[1]);\n        if (squaredDistance < minSquaredDistance) {\n            var stride = this.stride;\n            for (var i = 0; i < stride; ++i) {\n                closestPoint[i] = flatCoordinates[i];\n            }\n            closestPoint.length = stride;\n            return squaredDistance;\n        }\n        else {\n            return minSquaredDistance;\n        }\n    };\n    /**\n     * Return the coordinate of the point.\n     * @return {import(\"../coordinate.js\").Coordinate} Coordinates.\n     * @override\n     * @api\n     */\n    Point.prototype.getCoordinates = function () {\n        return !this.flatCoordinates ? [] : this.flatCoordinates.slice();\n    };\n    /**\n     * @inheritDoc\n     */\n    Point.prototype.computeExtent = function (extent) {\n        return createOrUpdateFromCoordinate(this.flatCoordinates, extent);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Point.prototype.getType = function () {\n        return GeometryType.POINT;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Point.prototype.intersectsExtent = function (extent) {\n        return containsXY(extent, this.flatCoordinates[0], this.flatCoordinates[1]);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Point.prototype.setCoordinates = function (coordinates, opt_layout) {\n        this.setLayout(opt_layout, coordinates, 0);\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = [];\n        }\n        this.flatCoordinates.length = deflateCoordinate(this.flatCoordinates, 0, coordinates, this.stride);\n        this.changed();\n    };\n    return Point;\n}(SimpleGeometry));\nexport default Point;\n//# sourceMappingURL=Point.js.map","/**\n * @module ol/geom/flat/contains\n */\nimport { forEachCorner } from '../../extent.js';\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} Contains extent.\n */\nexport function linearRingContainsExtent(flatCoordinates, offset, end, stride, extent) {\n    var outside = forEachCorner(extent, \n    /**\n     * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @return {boolean} Contains (x, y).\n     */\n    function (coordinate) {\n        return !linearRingContainsXY(flatCoordinates, offset, end, stride, coordinate[0], coordinate[1]);\n    });\n    return !outside;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingContainsXY(flatCoordinates, offset, end, stride, x, y) {\n    // http://geomalgorithms.com/a03-_inclusion.html\n    // Copyright 2000 softSurfer, 2012 Dan Sunday\n    // This code may be freely used and modified for any purpose\n    // providing that this copyright notice is included with it.\n    // SoftSurfer makes no warranty for this code, and cannot be held\n    // liable for any real or imagined damage resulting from its use.\n    // Users of this code must verify correctness for their application.\n    var wn = 0;\n    var x1 = flatCoordinates[end - stride];\n    var y1 = flatCoordinates[end - stride + 1];\n    for (; offset < end; offset += stride) {\n        var x2 = flatCoordinates[offset];\n        var y2 = flatCoordinates[offset + 1];\n        if (y1 <= y) {\n            if (y2 > y && ((x2 - x1) * (y - y1)) - ((x - x1) * (y2 - y1)) > 0) {\n                wn++;\n            }\n        }\n        else if (y2 <= y && ((x2 - x1) * (y - y1)) - ((x - x1) * (y2 - y1)) < 0) {\n            wn--;\n        }\n        x1 = x2;\n        y1 = y2;\n    }\n    return wn !== 0;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y) {\n    if (ends.length === 0) {\n        return false;\n    }\n    if (!linearRingContainsXY(flatCoordinates, offset, ends[0], stride, x, y)) {\n        return false;\n    }\n    for (var i = 1, ii = ends.length; i < ii; ++i) {\n        if (linearRingContainsXY(flatCoordinates, ends[i - 1], ends[i], stride, x, y)) {\n            return false;\n        }\n    }\n    return true;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {boolean} Contains (x, y).\n */\nexport function linearRingssContainsXY(flatCoordinates, offset, endss, stride, x, y) {\n    if (endss.length === 0) {\n        return false;\n    }\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        if (linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y)) {\n            return true;\n        }\n        offset = ends[ends.length - 1];\n    }\n    return false;\n}\n//# sourceMappingURL=contains.js.map","/**\n * @module ol/geom/flat/interiorpoint\n */\nimport { numberSafeCompareFunction } from '../../array.js';\nimport { linearRingsContainsXY } from './contains.js';\n/**\n * Calculates a point that is likely to lie in the interior of the linear rings.\n * Inspired by JTS's com.vividsolutions.jts.geom.Geometry#getInteriorPoint.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {Array<number>} flatCenters Flat centers.\n * @param {number} flatCentersOffset Flat center offset.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Destination point as XYM coordinate, where M is the\n * length of the horizontal intersection that the point belongs to.\n */\nexport function getInteriorPointOfArray(flatCoordinates, offset, ends, stride, flatCenters, flatCentersOffset, opt_dest) {\n    var i, ii, x, x1, x2, y1, y2;\n    var y = flatCenters[flatCentersOffset + 1];\n    /** @type {Array<number>} */\n    var intersections = [];\n    // Calculate intersections with the horizontal line\n    for (var r = 0, rr = ends.length; r < rr; ++r) {\n        var end = ends[r];\n        x1 = flatCoordinates[end - stride];\n        y1 = flatCoordinates[end - stride + 1];\n        for (i = offset; i < end; i += stride) {\n            x2 = flatCoordinates[i];\n            y2 = flatCoordinates[i + 1];\n            if ((y <= y1 && y2 <= y) || (y1 <= y && y <= y2)) {\n                x = (y - y1) / (y2 - y1) * (x2 - x1) + x1;\n                intersections.push(x);\n            }\n            x1 = x2;\n            y1 = y2;\n        }\n    }\n    // Find the longest segment of the horizontal line that has its center point\n    // inside the linear ring.\n    var pointX = NaN;\n    var maxSegmentLength = -Infinity;\n    intersections.sort(numberSafeCompareFunction);\n    x1 = intersections[0];\n    for (i = 1, ii = intersections.length; i < ii; ++i) {\n        x2 = intersections[i];\n        var segmentLength = Math.abs(x2 - x1);\n        if (segmentLength > maxSegmentLength) {\n            x = (x1 + x2) / 2;\n            if (linearRingsContainsXY(flatCoordinates, offset, ends, stride, x, y)) {\n                pointX = x;\n                maxSegmentLength = segmentLength;\n            }\n        }\n        x1 = x2;\n    }\n    if (isNaN(pointX)) {\n        // There is no horizontal line that has its center point inside the linear\n        // ring.  Use the center of the the linear ring's extent.\n        pointX = flatCenters[flatCentersOffset];\n    }\n    if (opt_dest) {\n        opt_dest.push(pointX, y, maxSegmentLength);\n        return opt_dest;\n    }\n    else {\n        return [pointX, y, maxSegmentLength];\n    }\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {Array<number>} flatCenters Flat centers.\n * @return {Array<number>} Interior points as XYM coordinates, where M is the\n * length of the horizontal intersection that the point belongs to.\n */\nexport function getInteriorPointsOfMultiArray(flatCoordinates, offset, endss, stride, flatCenters) {\n    var interiorPoints = [];\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        interiorPoints = getInteriorPointOfArray(flatCoordinates, offset, ends, stride, flatCenters, 2 * i, interiorPoints);\n        offset = ends[ends.length - 1];\n    }\n    return interiorPoints;\n}\n//# sourceMappingURL=interiorpoint.js.map","/**\n * @module ol/geom/flat/segments\n */\n/**\n * This function calls `callback` for each segment of the flat coordinates\n * array. If the callback returns a truthy value the function returns that\n * value immediately. Otherwise the function returns `false`.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {function(import(\"../../coordinate.js\").Coordinate, import(\"../../coordinate.js\").Coordinate): T} callback Function\n *     called for each segment.\n * @return {T|boolean} Value.\n * @template T\n */\nexport function forEach(flatCoordinates, offset, end, stride, callback) {\n    var point1 = [flatCoordinates[offset], flatCoordinates[offset + 1]];\n    var point2 = [];\n    var ret;\n    for (; (offset + stride) < end; offset += stride) {\n        point2[0] = flatCoordinates[offset + stride];\n        point2[1] = flatCoordinates[offset + stride + 1];\n        ret = callback(point1, point2);\n        if (ret) {\n            return ret;\n        }\n        point1[0] = point2[0];\n        point1[1] = point2[1];\n    }\n    return false;\n}\n//# sourceMappingURL=segments.js.map","/**\n * @module ol/geom/flat/intersectsextent\n */\nimport { containsExtent, createEmpty, extendFlatCoordinates, intersects, intersectsSegment } from '../../extent.js';\nimport { linearRingContainsXY, linearRingContainsExtent } from './contains.js';\nimport { forEach as forEachSegment } from './segments.js';\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLineString(flatCoordinates, offset, end, stride, extent) {\n    var coordinatesExtent = extendFlatCoordinates(createEmpty(), flatCoordinates, offset, end, stride);\n    if (!intersects(extent, coordinatesExtent)) {\n        return false;\n    }\n    if (containsExtent(extent, coordinatesExtent)) {\n        return true;\n    }\n    if (coordinatesExtent[0] >= extent[0] &&\n        coordinatesExtent[2] <= extent[2]) {\n        return true;\n    }\n    if (coordinatesExtent[1] >= extent[1] &&\n        coordinatesExtent[3] <= extent[3]) {\n        return true;\n    }\n    return forEachSegment(flatCoordinates, offset, end, stride, \n    /**\n     * @param {import(\"../../coordinate.js\").Coordinate} point1 Start point.\n     * @param {import(\"../../coordinate.js\").Coordinate} point2 End point.\n     * @return {boolean} `true` if the segment and the extent intersect,\n     *     `false` otherwise.\n     */\n    function (point1, point2) {\n        return intersectsSegment(extent, point1, point2);\n    });\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLineStringArray(flatCoordinates, offset, ends, stride, extent) {\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        if (intersectsLineString(flatCoordinates, offset, ends[i], stride, extent)) {\n            return true;\n        }\n        offset = ends[i];\n    }\n    return false;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRing(flatCoordinates, offset, end, stride, extent) {\n    if (intersectsLineString(flatCoordinates, offset, end, stride, extent)) {\n        return true;\n    }\n    if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[0], extent[1])) {\n        return true;\n    }\n    if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[0], extent[3])) {\n        return true;\n    }\n    if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[2], extent[1])) {\n        return true;\n    }\n    if (linearRingContainsXY(flatCoordinates, offset, end, stride, extent[2], extent[3])) {\n        return true;\n    }\n    return false;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRingArray(flatCoordinates, offset, ends, stride, extent) {\n    if (!intersectsLinearRing(flatCoordinates, offset, ends[0], stride, extent)) {\n        return false;\n    }\n    if (ends.length === 1) {\n        return true;\n    }\n    for (var i = 1, ii = ends.length; i < ii; ++i) {\n        if (linearRingContainsExtent(flatCoordinates, ends[i - 1], ends[i], stride, extent)) {\n            if (!intersectsLineString(flatCoordinates, ends[i - 1], ends[i], stride, extent)) {\n                return false;\n            }\n        }\n    }\n    return true;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Endss.\n * @param {number} stride Stride.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @return {boolean} True if the geometry and the extent intersect.\n */\nexport function intersectsLinearRingMultiArray(flatCoordinates, offset, endss, stride, extent) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        if (intersectsLinearRingArray(flatCoordinates, offset, ends, stride, extent)) {\n            return true;\n        }\n        offset = ends[ends.length - 1];\n    }\n    return false;\n}\n//# sourceMappingURL=intersectsextent.js.map","/**\n * @module ol/geom/flat/reverse\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n */\nexport function coordinates(flatCoordinates, offset, end, stride) {\n    while (offset < end - stride) {\n        for (var i = 0; i < stride; ++i) {\n            var tmp = flatCoordinates[offset + i];\n            flatCoordinates[offset + i] = flatCoordinates[end - stride + i];\n            flatCoordinates[end - stride + i] = tmp;\n        }\n        offset += stride;\n        end -= stride;\n    }\n}\n//# sourceMappingURL=reverse.js.map","/**\n * @module ol/geom/flat/orient\n */\nimport { coordinates as reverseCoordinates } from './reverse.js';\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {boolean} Is clockwise.\n */\nexport function linearRingIsClockwise(flatCoordinates, offset, end, stride) {\n    // http://tinyurl.com/clockwise-method\n    // https://github.com/OSGeo/gdal/blob/trunk/gdal/ogr/ogrlinearring.cpp\n    var edge = 0;\n    var x1 = flatCoordinates[end - stride];\n    var y1 = flatCoordinates[end - stride + 1];\n    for (; offset < end; offset += stride) {\n        var x2 = flatCoordinates[offset];\n        var y2 = flatCoordinates[offset + 1];\n        edge += (x2 - x1) * (y2 + y1);\n        x1 = x2;\n        y1 = y2;\n    }\n    return edge > 0;\n}\n/**\n * Determines if linear rings are oriented.  By default, left-hand orientation\n * is tested (first ring must be clockwise, remaining rings counter-clockwise).\n * To test for right-hand orientation, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Test for right-hand orientation\n *     (counter-clockwise exterior ring and clockwise interior rings).\n * @return {boolean} Rings are correctly oriented.\n */\nexport function linearRingsAreOriented(flatCoordinates, offset, ends, stride, opt_right) {\n    var right = opt_right !== undefined ? opt_right : false;\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        var isClockwise = linearRingIsClockwise(flatCoordinates, offset, end, stride);\n        if (i === 0) {\n            if ((right && isClockwise) || (!right && !isClockwise)) {\n                return false;\n            }\n        }\n        else {\n            if ((right && !isClockwise) || (!right && isClockwise)) {\n                return false;\n            }\n        }\n        offset = end;\n    }\n    return true;\n}\n/**\n * Determines if linear rings are oriented.  By default, left-hand orientation\n * is tested (first ring must be clockwise, remaining rings counter-clockwise).\n * To test for right-hand orientation, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Array of array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Test for right-hand orientation\n *     (counter-clockwise exterior ring and clockwise interior rings).\n * @return {boolean} Rings are correctly oriented.\n */\nexport function linearRingssAreOriented(flatCoordinates, offset, endss, stride, opt_right) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        var ends = endss[i];\n        if (!linearRingsAreOriented(flatCoordinates, offset, ends, stride, opt_right)) {\n            return false;\n        }\n        if (ends.length) {\n            offset = ends[ends.length - 1];\n        }\n    }\n    return true;\n}\n/**\n * Orient coordinates in a flat array of linear rings.  By default, rings\n * are oriented following the left-hand rule (clockwise for exterior and\n * counter-clockwise for interior rings).  To orient according to the\n * right-hand rule, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Follow the right-hand rule for orientation.\n * @return {number} End.\n */\nexport function orientLinearRings(flatCoordinates, offset, ends, stride, opt_right) {\n    var right = opt_right !== undefined ? opt_right : false;\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        var isClockwise = linearRingIsClockwise(flatCoordinates, offset, end, stride);\n        var reverse = i === 0 ?\n            (right && isClockwise) || (!right && !isClockwise) :\n            (right && !isClockwise) || (!right && isClockwise);\n        if (reverse) {\n            reverseCoordinates(flatCoordinates, offset, end, stride);\n        }\n        offset = end;\n    }\n    return offset;\n}\n/**\n * Orient coordinates in a flat array of linear rings.  By default, rings\n * are oriented following the left-hand rule (clockwise for exterior and\n * counter-clockwise for interior rings).  To orient according to the\n * right-hand rule, use the `opt_right` argument.\n *\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<Array<number>>} endss Array of array of end indexes.\n * @param {number} stride Stride.\n * @param {boolean=} opt_right Follow the right-hand rule for orientation.\n * @return {number} End.\n */\nexport function orientLinearRingsArray(flatCoordinates, offset, endss, stride, opt_right) {\n    for (var i = 0, ii = endss.length; i < ii; ++i) {\n        offset = orientLinearRings(flatCoordinates, offset, endss[i], stride, opt_right);\n    }\n    return offset;\n}\n//# sourceMappingURL=orient.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/Polygon\n */\nimport { extend } from '../array.js';\nimport { closestSquaredDistanceXY, getCenter } from '../extent.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport GeometryType from './GeometryType.js';\nimport LinearRing from './LinearRing.js';\nimport Point from './Point.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport { offset as sphereOffset } from '../sphere.js';\nimport { linearRings as linearRingsArea } from './flat/area.js';\nimport { assignClosestArrayPoint, arrayMaxSquaredDelta } from './flat/closest.js';\nimport { linearRingsContainsXY } from './flat/contains.js';\nimport { deflateCoordinatesArray } from './flat/deflate.js';\nimport { inflateCoordinatesArray } from './flat/inflate.js';\nimport { getInteriorPointOfArray } from './flat/interiorpoint.js';\nimport { intersectsLinearRingArray } from './flat/intersectsextent.js';\nimport { linearRingsAreOriented, orientLinearRings } from './flat/orient.js';\nimport { quantizeArray } from './flat/simplify.js';\nimport { modulo } from '../math.js';\n/**\n * @classdesc\n * Polygon geometry.\n *\n * @api\n */\nvar Polygon = /** @class */ (function (_super) {\n    __extends(Polygon, _super);\n    /**\n     * @param {!Array<Array<import(\"../coordinate.js\").Coordinate>>|!Array<number>} coordinates\n     *     Array of linear rings that define the polygon. The first linear ring of the\n     *     array defines the outer-boundary or surface of the polygon. Each subsequent\n     *     linear ring defines a hole in the surface of the polygon. A linear ring is\n     *     an array of vertices' coordinates where the first coordinate and the last are\n     *     equivalent. (For internal use, flat coordinates in combination with\n     *     `opt_layout` and `opt_ends` are also accepted.)\n     * @param {GeometryLayout=} opt_layout Layout.\n     * @param {Array<number>=} opt_ends Ends (for internal use with flat coordinates).\n     */\n    function Polygon(coordinates, opt_layout, opt_ends) {\n        var _this = _super.call(this) || this;\n        /**\n         * @type {Array<number>}\n         * @private\n         */\n        _this.ends_ = [];\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.flatInteriorPointRevision_ = -1;\n        /**\n         * @private\n         * @type {import(\"../coordinate.js\").Coordinate}\n         */\n        _this.flatInteriorPoint_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDelta_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDeltaRevision_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.orientedRevision_ = -1;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.orientedFlatCoordinates_ = null;\n        if (opt_layout !== undefined && opt_ends) {\n            _this.setFlatCoordinates(opt_layout, /** @type {Array<number>} */ (coordinates));\n            _this.ends_ = opt_ends;\n        }\n        else {\n            _this.setCoordinates(/** @type {Array<Array<import(\"../coordinate.js\").Coordinate>>} */ (coordinates), opt_layout);\n        }\n        return _this;\n    }\n    /**\n     * Append the passed linear ring to this polygon.\n     * @param {LinearRing} linearRing Linear ring.\n     * @api\n     */\n    Polygon.prototype.appendLinearRing = function (linearRing) {\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = linearRing.getFlatCoordinates().slice();\n        }\n        else {\n            extend(this.flatCoordinates, linearRing.getFlatCoordinates());\n        }\n        this.ends_.push(this.flatCoordinates.length);\n        this.changed();\n    };\n    /**\n     * Make a complete copy of the geometry.\n     * @return {!Polygon} Clone.\n     * @override\n     * @api\n     */\n    Polygon.prototype.clone = function () {\n        return new Polygon(this.flatCoordinates.slice(), this.layout, this.ends_.slice());\n    };\n    /**\n     * @inheritDoc\n     */\n    Polygon.prototype.closestPointXY = function (x, y, closestPoint, minSquaredDistance) {\n        if (minSquaredDistance < closestSquaredDistanceXY(this.getExtent(), x, y)) {\n            return minSquaredDistance;\n        }\n        if (this.maxDeltaRevision_ != this.getRevision()) {\n            this.maxDelta_ = Math.sqrt(arrayMaxSquaredDelta(this.flatCoordinates, 0, this.ends_, this.stride, 0));\n            this.maxDeltaRevision_ = this.getRevision();\n        }\n        return assignClosestArrayPoint(this.flatCoordinates, 0, this.ends_, this.stride, this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);\n    };\n    /**\n     * @inheritDoc\n     */\n    Polygon.prototype.containsXY = function (x, y) {\n        return linearRingsContainsXY(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, x, y);\n    };\n    /**\n     * Return the area of the polygon on projected plane.\n     * @return {number} Area (on projected plane).\n     * @api\n     */\n    Polygon.prototype.getArea = function () {\n        return linearRingsArea(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride);\n    };\n    /**\n     * Get the coordinate array for this geometry.  This array has the structure\n     * of a GeoJSON coordinate array for polygons.\n     *\n     * @param {boolean=} opt_right Orient coordinates according to the right-hand\n     *     rule (counter-clockwise for exterior and clockwise for interior rings).\n     *     If `false`, coordinates will be oriented according to the left-hand rule\n     *     (clockwise for exterior and counter-clockwise for interior rings).\n     *     By default, coordinate orientation will depend on how the geometry was\n     *     constructed.\n     * @return {Array<Array<import(\"../coordinate.js\").Coordinate>>} Coordinates.\n     * @override\n     * @api\n     */\n    Polygon.prototype.getCoordinates = function (opt_right) {\n        var flatCoordinates;\n        if (opt_right !== undefined) {\n            flatCoordinates = this.getOrientedFlatCoordinates().slice();\n            orientLinearRings(flatCoordinates, 0, this.ends_, this.stride, opt_right);\n        }\n        else {\n            flatCoordinates = this.flatCoordinates;\n        }\n        return inflateCoordinatesArray(flatCoordinates, 0, this.ends_, this.stride);\n    };\n    /**\n     * @return {Array<number>} Ends.\n     */\n    Polygon.prototype.getEnds = function () {\n        return this.ends_;\n    };\n    /**\n     * @return {Array<number>} Interior point.\n     */\n    Polygon.prototype.getFlatInteriorPoint = function () {\n        if (this.flatInteriorPointRevision_ != this.getRevision()) {\n            var flatCenter = getCenter(this.getExtent());\n            this.flatInteriorPoint_ = getInteriorPointOfArray(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, flatCenter, 0);\n            this.flatInteriorPointRevision_ = this.getRevision();\n        }\n        return this.flatInteriorPoint_;\n    };\n    /**\n     * Return an interior point of the polygon.\n     * @return {Point} Interior point as XYM coordinate, where M is the\n     * length of the horizontal intersection that the point belongs to.\n     * @api\n     */\n    Polygon.prototype.getInteriorPoint = function () {\n        return new Point(this.getFlatInteriorPoint(), GeometryLayout.XYM);\n    };\n    /**\n     * Return the number of rings of the polygon,  this includes the exterior\n     * ring and any interior rings.\n     *\n     * @return {number} Number of rings.\n     * @api\n     */\n    Polygon.prototype.getLinearRingCount = function () {\n        return this.ends_.length;\n    };\n    /**\n     * Return the Nth linear ring of the polygon geometry. Return `null` if the\n     * given index is out of range.\n     * The exterior linear ring is available at index `0` and the interior rings\n     * at index `1` and beyond.\n     *\n     * @param {number} index Index.\n     * @return {LinearRing} Linear ring.\n     * @api\n     */\n    Polygon.prototype.getLinearRing = function (index) {\n        if (index < 0 || this.ends_.length <= index) {\n            return null;\n        }\n        return new LinearRing(this.flatCoordinates.slice(index === 0 ? 0 : this.ends_[index - 1], this.ends_[index]), this.layout);\n    };\n    /**\n     * Return the linear rings of the polygon.\n     * @return {Array<LinearRing>} Linear rings.\n     * @api\n     */\n    Polygon.prototype.getLinearRings = function () {\n        var layout = this.layout;\n        var flatCoordinates = this.flatCoordinates;\n        var ends = this.ends_;\n        var linearRings = [];\n        var offset = 0;\n        for (var i = 0, ii = ends.length; i < ii; ++i) {\n            var end = ends[i];\n            var linearRing = new LinearRing(flatCoordinates.slice(offset, end), layout);\n            linearRings.push(linearRing);\n            offset = end;\n        }\n        return linearRings;\n    };\n    /**\n     * @return {Array<number>} Oriented flat coordinates.\n     */\n    Polygon.prototype.getOrientedFlatCoordinates = function () {\n        if (this.orientedRevision_ != this.getRevision()) {\n            var flatCoordinates = this.flatCoordinates;\n            if (linearRingsAreOriented(flatCoordinates, 0, this.ends_, this.stride)) {\n                this.orientedFlatCoordinates_ = flatCoordinates;\n            }\n            else {\n                this.orientedFlatCoordinates_ = flatCoordinates.slice();\n                this.orientedFlatCoordinates_.length =\n                    orientLinearRings(this.orientedFlatCoordinates_, 0, this.ends_, this.stride);\n            }\n            this.orientedRevision_ = this.getRevision();\n        }\n        return this.orientedFlatCoordinates_;\n    };\n    /**\n     * @inheritDoc\n     */\n    Polygon.prototype.getSimplifiedGeometryInternal = function (squaredTolerance) {\n        var simplifiedFlatCoordinates = [];\n        var simplifiedEnds = [];\n        simplifiedFlatCoordinates.length = quantizeArray(this.flatCoordinates, 0, this.ends_, this.stride, Math.sqrt(squaredTolerance), simplifiedFlatCoordinates, 0, simplifiedEnds);\n        return new Polygon(simplifiedFlatCoordinates, GeometryLayout.XY, simplifiedEnds);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Polygon.prototype.getType = function () {\n        return GeometryType.POLYGON;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Polygon.prototype.intersectsExtent = function (extent) {\n        return intersectsLinearRingArray(this.getOrientedFlatCoordinates(), 0, this.ends_, this.stride, extent);\n    };\n    /**\n     * Set the coordinates of the polygon.\n     * @param {!Array<Array<import(\"../coordinate.js\").Coordinate>>} coordinates Coordinates.\n     * @param {GeometryLayout=} opt_layout Layout.\n     * @override\n     * @api\n     */\n    Polygon.prototype.setCoordinates = function (coordinates, opt_layout) {\n        this.setLayout(opt_layout, coordinates, 2);\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = [];\n        }\n        var ends = deflateCoordinatesArray(this.flatCoordinates, 0, coordinates, this.stride, this.ends_);\n        this.flatCoordinates.length = ends.length === 0 ? 0 : ends[ends.length - 1];\n        this.changed();\n    };\n    return Polygon;\n}(SimpleGeometry));\nexport default Polygon;\n/**\n * Create an approximation of a circle on the surface of a sphere.\n * @param {import(\"../coordinate.js\").Coordinate} center Center (`[lon, lat]` in degrees).\n * @param {number} radius The great-circle distance from the center to\n *     the polygon vertices.\n * @param {number=} opt_n Optional number of vertices for the resulting\n *     polygon. Default is `32`.\n * @param {number=} opt_sphereRadius Optional radius for the sphere (defaults to\n *     the Earth's mean radius using the WGS84 ellipsoid).\n * @return {Polygon} The \"circular\" polygon.\n * @api\n */\nexport function circular(center, radius, opt_n, opt_sphereRadius) {\n    var n = opt_n ? opt_n : 32;\n    /** @type {Array<number>} */\n    var flatCoordinates = [];\n    for (var i = 0; i < n; ++i) {\n        extend(flatCoordinates, sphereOffset(center, radius, 2 * Math.PI * i / n, opt_sphereRadius));\n    }\n    flatCoordinates.push(flatCoordinates[0], flatCoordinates[1]);\n    return new Polygon(flatCoordinates, GeometryLayout.XY, [flatCoordinates.length]);\n}\n/**\n * Create a polygon from an extent. The layout used is `XY`.\n * @param {import(\"../extent.js\").Extent} extent The extent.\n * @return {Polygon} The polygon.\n * @api\n */\nexport function fromExtent(extent) {\n    var minX = extent[0];\n    var minY = extent[1];\n    var maxX = extent[2];\n    var maxY = extent[3];\n    var flatCoordinates = [minX, minY, minX, maxY, maxX, maxY, maxX, minY, minX, minY];\n    return new Polygon(flatCoordinates, GeometryLayout.XY, [flatCoordinates.length]);\n}\n/**\n * Create a regular polygon from a circle.\n * @param {import(\"./Circle.js\").default} circle Circle geometry.\n * @param {number=} opt_sides Number of sides of the polygon. Default is 32.\n * @param {number=} opt_angle Start angle for the first vertex of the polygon in\n *     radians. Default is 0.\n * @return {Polygon} Polygon geometry.\n * @api\n */\nexport function fromCircle(circle, opt_sides, opt_angle) {\n    var sides = opt_sides ? opt_sides : 32;\n    var stride = circle.getStride();\n    var layout = circle.getLayout();\n    var center = circle.getCenter();\n    var arrayLength = stride * (sides + 1);\n    var flatCoordinates = new Array(arrayLength);\n    for (var i = 0; i < arrayLength; i += stride) {\n        flatCoordinates[i] = 0;\n        flatCoordinates[i + 1] = 0;\n        for (var j = 2; j < stride; j++) {\n            flatCoordinates[i + j] = center[j];\n        }\n    }\n    var ends = [flatCoordinates.length];\n    var polygon = new Polygon(flatCoordinates, layout, ends);\n    makeRegular(polygon, center, circle.getRadius(), opt_angle);\n    return polygon;\n}\n/**\n * Modify the coordinates of a polygon to make it a regular polygon.\n * @param {Polygon} polygon Polygon geometry.\n * @param {import(\"../coordinate.js\").Coordinate} center Center of the regular polygon.\n * @param {number} radius Radius of the regular polygon.\n * @param {number=} opt_angle Start angle for the first vertex of the polygon in\n *     radians. Default is 0.\n */\nexport function makeRegular(polygon, center, radius, opt_angle) {\n    var flatCoordinates = polygon.getFlatCoordinates();\n    var stride = polygon.getStride();\n    var sides = flatCoordinates.length / stride - 1;\n    var startAngle = opt_angle ? opt_angle : 0;\n    for (var i = 0; i <= sides; ++i) {\n        var offset = i * stride;\n        var angle = startAngle + (modulo(i, sides) * 2 * Math.PI / sides);\n        flatCoordinates[offset] = center[0] + (radius * Math.cos(angle));\n        flatCoordinates[offset + 1] = center[1] + (radius * Math.sin(angle));\n    }\n    polygon.changed();\n}\n//# sourceMappingURL=Polygon.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/ZoomToExtent\n */\nimport EventType from '../events/EventType.js';\nimport { fromExtent as polygonFromExtent } from '../geom/Polygon.js';\nimport Control from './Control.js';\nimport { CLASS_CONTROL, CLASS_UNSELECTABLE } from '../css.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-zoom-extent'] Class name.\n * @property {HTMLElement|string} [target] Specify a target if you want the control\n * to be rendered outside of the map's viewport.\n * @property {string|HTMLElement} [label='E'] Text label to use for the button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string} [tipLabel='Fit to extent'] Text label to use for the button tip.\n * @property {import(\"../extent.js\").Extent} [extent] The extent to zoom to. If undefined the validity\n * extent of the view projection is used.\n */\n/**\n * @classdesc\n * A button control which, when pressed, changes the map view to a specific\n * extent. To style this control use the css selector `.ol-zoom-extent`.\n *\n * @api\n */\nvar ZoomToExtent = /** @class */ (function (_super) {\n    __extends(ZoomToExtent, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function ZoomToExtent(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            element: document.createElement('div'),\n            target: options.target\n        }) || this;\n        /**\n         * @type {?import(\"../extent.js\").Extent}\n         * @protected\n         */\n        _this.extent = options.extent ? options.extent : null;\n        var className = options.className !== undefined ? options.className : 'ol-zoom-extent';\n        var label = options.label !== undefined ? options.label : 'E';\n        var tipLabel = options.tipLabel !== undefined ? options.tipLabel : 'Fit to extent';\n        var button = document.createElement('button');\n        button.setAttribute('type', 'button');\n        button.title = tipLabel;\n        button.appendChild(typeof label === 'string' ? document.createTextNode(label) : label);\n        button.addEventListener(EventType.CLICK, _this.handleClick_.bind(_this), false);\n        var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL;\n        var element = _this.element;\n        element.className = cssClasses;\n        element.appendChild(button);\n        return _this;\n    }\n    /**\n     * @param {MouseEvent} event The event to handle\n     * @private\n     */\n    ZoomToExtent.prototype.handleClick_ = function (event) {\n        event.preventDefault();\n        this.handleZoomToExtent();\n    };\n    /**\n     * @protected\n     */\n    ZoomToExtent.prototype.handleZoomToExtent = function () {\n        var map = this.getMap();\n        var view = map.getView();\n        var extent = !this.extent ? view.getProjection().getExtent() : this.extent;\n        view.fitInternal(polygonFromExtent(extent));\n    };\n    return ZoomToExtent;\n}(Control));\nexport default ZoomToExtent;\n//# sourceMappingURL=ZoomToExtent.js.map","/**\n * @module ol/geom/flat/interpolate\n */\nimport { binarySearch } from '../../array.js';\nimport { lerp } from '../../math.js';\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} fraction Fraction.\n * @param {Array<number>=} opt_dest Destination.\n * @return {Array<number>} Destination.\n */\nexport function interpolatePoint(flatCoordinates, offset, end, stride, fraction, opt_dest) {\n    var pointX = NaN;\n    var pointY = NaN;\n    var n = (end - offset) / stride;\n    if (n === 1) {\n        pointX = flatCoordinates[offset];\n        pointY = flatCoordinates[offset + 1];\n    }\n    else if (n == 2) {\n        pointX = (1 - fraction) * flatCoordinates[offset] +\n            fraction * flatCoordinates[offset + stride];\n        pointY = (1 - fraction) * flatCoordinates[offset + 1] +\n            fraction * flatCoordinates[offset + stride + 1];\n    }\n    else if (n !== 0) {\n        var x1 = flatCoordinates[offset];\n        var y1 = flatCoordinates[offset + 1];\n        var length_1 = 0;\n        var cumulativeLengths = [0];\n        for (var i = offset + stride; i < end; i += stride) {\n            var x2 = flatCoordinates[i];\n            var y2 = flatCoordinates[i + 1];\n            length_1 += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));\n            cumulativeLengths.push(length_1);\n            x1 = x2;\n            y1 = y2;\n        }\n        var target = fraction * length_1;\n        var index = binarySearch(cumulativeLengths, target);\n        if (index < 0) {\n            var t = (target - cumulativeLengths[-index - 2]) /\n                (cumulativeLengths[-index - 1] - cumulativeLengths[-index - 2]);\n            var o = offset + (-index - 2) * stride;\n            pointX = lerp(flatCoordinates[o], flatCoordinates[o + stride], t);\n            pointY = lerp(flatCoordinates[o + 1], flatCoordinates[o + stride + 1], t);\n        }\n        else {\n            pointX = flatCoordinates[offset + index * stride];\n            pointY = flatCoordinates[offset + index * stride + 1];\n        }\n    }\n    if (opt_dest) {\n        opt_dest[0] = pointX;\n        opt_dest[1] = pointY;\n        return opt_dest;\n    }\n    else {\n        return [pointX, pointY];\n    }\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {number} m M.\n * @param {boolean} extrapolate Extrapolate.\n * @return {import(\"../../coordinate.js\").Coordinate} Coordinate.\n */\nexport function lineStringCoordinateAtM(flatCoordinates, offset, end, stride, m, extrapolate) {\n    if (end == offset) {\n        return null;\n    }\n    var coordinate;\n    if (m < flatCoordinates[offset + stride - 1]) {\n        if (extrapolate) {\n            coordinate = flatCoordinates.slice(offset, offset + stride);\n            coordinate[stride - 1] = m;\n            return coordinate;\n        }\n        else {\n            return null;\n        }\n    }\n    else if (flatCoordinates[end - 1] < m) {\n        if (extrapolate) {\n            coordinate = flatCoordinates.slice(end - stride, end);\n            coordinate[stride - 1] = m;\n            return coordinate;\n        }\n        else {\n            return null;\n        }\n    }\n    // FIXME use O(1) search\n    if (m == flatCoordinates[offset + stride - 1]) {\n        return flatCoordinates.slice(offset, offset + stride);\n    }\n    var lo = offset / stride;\n    var hi = end / stride;\n    while (lo < hi) {\n        var mid = (lo + hi) >> 1;\n        if (m < flatCoordinates[(mid + 1) * stride - 1]) {\n            hi = mid;\n        }\n        else {\n            lo = mid + 1;\n        }\n    }\n    var m0 = flatCoordinates[lo * stride - 1];\n    if (m == m0) {\n        return flatCoordinates.slice((lo - 1) * stride, (lo - 1) * stride + stride);\n    }\n    var m1 = flatCoordinates[(lo + 1) * stride - 1];\n    var t = (m - m0) / (m1 - m0);\n    coordinate = [];\n    for (var i = 0; i < stride - 1; ++i) {\n        coordinate.push(lerp(flatCoordinates[(lo - 1) * stride + i], flatCoordinates[lo * stride + i], t));\n    }\n    coordinate.push(m);\n    return coordinate;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array<number>} ends Ends.\n * @param {number} stride Stride.\n * @param {number} m M.\n * @param {boolean} extrapolate Extrapolate.\n * @param {boolean} interpolate Interpolate.\n * @return {import(\"../../coordinate.js\").Coordinate} Coordinate.\n */\nexport function lineStringsCoordinateAtM(flatCoordinates, offset, ends, stride, m, extrapolate, interpolate) {\n    if (interpolate) {\n        return lineStringCoordinateAtM(flatCoordinates, offset, ends[ends.length - 1], stride, m, extrapolate);\n    }\n    var coordinate;\n    if (m < flatCoordinates[stride - 1]) {\n        if (extrapolate) {\n            coordinate = flatCoordinates.slice(0, stride);\n            coordinate[stride - 1] = m;\n            return coordinate;\n        }\n        else {\n            return null;\n        }\n    }\n    if (flatCoordinates[flatCoordinates.length - 1] < m) {\n        if (extrapolate) {\n            coordinate = flatCoordinates.slice(flatCoordinates.length - stride);\n            coordinate[stride - 1] = m;\n            return coordinate;\n        }\n        else {\n            return null;\n        }\n    }\n    for (var i = 0, ii = ends.length; i < ii; ++i) {\n        var end = ends[i];\n        if (offset == end) {\n            continue;\n        }\n        if (m < flatCoordinates[offset + stride - 1]) {\n            return null;\n        }\n        else if (m <= flatCoordinates[end - 1]) {\n            return lineStringCoordinateAtM(flatCoordinates, offset, end, stride, m, false);\n        }\n        offset = end;\n    }\n    return null;\n}\n//# sourceMappingURL=interpolate.js.map","/**\n * @module ol/geom/flat/length\n */\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Length.\n */\nexport function lineStringLength(flatCoordinates, offset, end, stride) {\n    var x1 = flatCoordinates[offset];\n    var y1 = flatCoordinates[offset + 1];\n    var length = 0;\n    for (var i = offset + stride; i < end; i += stride) {\n        var x2 = flatCoordinates[i];\n        var y2 = flatCoordinates[i + 1];\n        length += Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));\n        x1 = x2;\n        y1 = y2;\n    }\n    return length;\n}\n/**\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {number} Perimeter.\n */\nexport function linearRingLength(flatCoordinates, offset, end, stride) {\n    var perimeter = lineStringLength(flatCoordinates, offset, end, stride);\n    var dx = flatCoordinates[end - stride] - flatCoordinates[offset];\n    var dy = flatCoordinates[end - stride + 1] - flatCoordinates[offset + 1];\n    perimeter += Math.sqrt(dx * dx + dy * dy);\n    return perimeter;\n}\n//# sourceMappingURL=length.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/geom/LineString\n */\nimport { extend } from '../array.js';\nimport { closestSquaredDistanceXY } from '../extent.js';\nimport GeometryLayout from './GeometryLayout.js';\nimport GeometryType from './GeometryType.js';\nimport SimpleGeometry from './SimpleGeometry.js';\nimport { assignClosestPoint, maxSquaredDelta } from './flat/closest.js';\nimport { deflateCoordinates } from './flat/deflate.js';\nimport { inflateCoordinates } from './flat/inflate.js';\nimport { interpolatePoint, lineStringCoordinateAtM } from './flat/interpolate.js';\nimport { intersectsLineString } from './flat/intersectsextent.js';\nimport { lineStringLength } from './flat/length.js';\nimport { forEach as forEachSegment } from './flat/segments.js';\nimport { douglasPeucker } from './flat/simplify.js';\n/**\n * @classdesc\n * Linestring geometry.\n *\n * @api\n */\nvar LineString = /** @class */ (function (_super) {\n    __extends(LineString, _super);\n    /**\n     * @param {Array<import(\"../coordinate.js\").Coordinate>|Array<number>} coordinates Coordinates.\n     *     For internal use, flat coordinates in combination with `opt_layout` are also accepted.\n     * @param {GeometryLayout=} opt_layout Layout.\n     */\n    function LineString(coordinates, opt_layout) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {import(\"../coordinate.js\").Coordinate}\n         */\n        _this.flatMidpoint_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.flatMidpointRevision_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDelta_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDeltaRevision_ = -1;\n        if (opt_layout !== undefined && !Array.isArray(coordinates[0])) {\n            _this.setFlatCoordinates(opt_layout, /** @type {Array<number>} */ (coordinates));\n        }\n        else {\n            _this.setCoordinates(/** @type {Array<import(\"../coordinate.js\").Coordinate>} */ (coordinates), opt_layout);\n        }\n        return _this;\n    }\n    /**\n     * Append the passed coordinate to the coordinates of the linestring.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @api\n     */\n    LineString.prototype.appendCoordinate = function (coordinate) {\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = coordinate.slice();\n        }\n        else {\n            extend(this.flatCoordinates, coordinate);\n        }\n        this.changed();\n    };\n    /**\n     * Make a complete copy of the geometry.\n     * @return {!LineString} Clone.\n     * @override\n     * @api\n     */\n    LineString.prototype.clone = function () {\n        return new LineString(this.flatCoordinates.slice(), this.layout);\n    };\n    /**\n     * @inheritDoc\n     */\n    LineString.prototype.closestPointXY = function (x, y, closestPoint, minSquaredDistance) {\n        if (minSquaredDistance < closestSquaredDistanceXY(this.getExtent(), x, y)) {\n            return minSquaredDistance;\n        }\n        if (this.maxDeltaRevision_ != this.getRevision()) {\n            this.maxDelta_ = Math.sqrt(maxSquaredDelta(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, 0));\n            this.maxDeltaRevision_ = this.getRevision();\n        }\n        return assignClosestPoint(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, this.maxDelta_, false, x, y, closestPoint, minSquaredDistance);\n    };\n    /**\n     * Iterate over each segment, calling the provided callback.\n     * If the callback returns a truthy value the function returns that\n     * value immediately. Otherwise the function returns `false`.\n     *\n     * @param {function(this: S, import(\"../coordinate.js\").Coordinate, import(\"../coordinate.js\").Coordinate): T} callback Function\n     *     called for each segment. The function will receive two arguments, the start and end coordinates of the segment.\n     * @return {T|boolean} Value.\n     * @template T,S\n     * @api\n     */\n    LineString.prototype.forEachSegment = function (callback) {\n        return forEachSegment(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, callback);\n    };\n    /**\n     * Returns the coordinate at `m` using linear interpolation, or `null` if no\n     * such coordinate exists.\n     *\n     * `opt_extrapolate` controls extrapolation beyond the range of Ms in the\n     * MultiLineString. If `opt_extrapolate` is `true` then Ms less than the first\n     * M will return the first coordinate and Ms greater than the last M will\n     * return the last coordinate.\n     *\n     * @param {number} m M.\n     * @param {boolean=} opt_extrapolate Extrapolate. Default is `false`.\n     * @return {import(\"../coordinate.js\").Coordinate} Coordinate.\n     * @api\n     */\n    LineString.prototype.getCoordinateAtM = function (m, opt_extrapolate) {\n        if (this.layout != GeometryLayout.XYM &&\n            this.layout != GeometryLayout.XYZM) {\n            return null;\n        }\n        var extrapolate = opt_extrapolate !== undefined ? opt_extrapolate : false;\n        return lineStringCoordinateAtM(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, m, extrapolate);\n    };\n    /**\n     * Return the coordinates of the linestring.\n     * @return {Array<import(\"../coordinate.js\").Coordinate>} Coordinates.\n     * @override\n     * @api\n     */\n    LineString.prototype.getCoordinates = function () {\n        return inflateCoordinates(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n    };\n    /**\n     * Return the coordinate at the provided fraction along the linestring.\n     * The `fraction` is a number between 0 and 1, where 0 is the start of the\n     * linestring and 1 is the end.\n     * @param {number} fraction Fraction.\n     * @param {import(\"../coordinate.js\").Coordinate=} opt_dest Optional coordinate whose values will\n     *     be modified. If not provided, a new coordinate will be returned.\n     * @return {import(\"../coordinate.js\").Coordinate} Coordinate of the interpolated point.\n     * @api\n     */\n    LineString.prototype.getCoordinateAt = function (fraction, opt_dest) {\n        return interpolatePoint(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, fraction, opt_dest);\n    };\n    /**\n     * Return the length of the linestring on projected plane.\n     * @return {number} Length (on projected plane).\n     * @api\n     */\n    LineString.prototype.getLength = function () {\n        return lineStringLength(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);\n    };\n    /**\n     * @return {Array<number>} Flat midpoint.\n     */\n    LineString.prototype.getFlatMidpoint = function () {\n        if (this.flatMidpointRevision_ != this.getRevision()) {\n            this.flatMidpoint_ = this.getCoordinateAt(0.5, this.flatMidpoint_);\n            this.flatMidpointRevision_ = this.getRevision();\n        }\n        return this.flatMidpoint_;\n    };\n    /**\n     * @inheritDoc\n     */\n    LineString.prototype.getSimplifiedGeometryInternal = function (squaredTolerance) {\n        var simplifiedFlatCoordinates = [];\n        simplifiedFlatCoordinates.length = douglasPeucker(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, squaredTolerance, simplifiedFlatCoordinates, 0);\n        return new LineString(simplifiedFlatCoordinates, GeometryLayout.XY);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    LineString.prototype.getType = function () {\n        return GeometryType.LINE_STRING;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    LineString.prototype.intersectsExtent = function (extent) {\n        return intersectsLineString(this.flatCoordinates, 0, this.flatCoordinates.length, this.stride, extent);\n    };\n    /**\n     * Set the coordinates of the linestring.\n     * @param {!Array<import(\"../coordinate.js\").Coordinate>} coordinates Coordinates.\n     * @param {GeometryLayout=} opt_layout Layout.\n     * @override\n     * @api\n     */\n    LineString.prototype.setCoordinates = function (coordinates, opt_layout) {\n        this.setLayout(opt_layout, coordinates, 1);\n        if (!this.flatCoordinates) {\n            this.flatCoordinates = [];\n        }\n        this.flatCoordinates.length = deflateCoordinates(this.flatCoordinates, 0, coordinates, this.stride);\n        this.changed();\n    };\n    return LineString;\n}(SimpleGeometry));\nexport default LineString;\n//# sourceMappingURL=LineString.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Feature\n */\nimport { assert } from './asserts.js';\nimport { listen, unlistenByKey } from './events.js';\nimport EventType from './events/EventType.js';\nimport BaseObject, { getChangeEventType } from './Object.js';\n/**\n * @typedef {typeof Feature|typeof import(\"./render/Feature.js\").default} FeatureClass\n */\n/**\n * @typedef {Feature|import(\"./render/Feature.js\").default} FeatureLike\n */\n/**\n * @classdesc\n * A vector object for geographic features with a geometry and other\n * attribute properties, similar to the features in vector file formats like\n * GeoJSON.\n *\n * Features can be styled individually with `setStyle`; otherwise they use the\n * style of their vector layer.\n *\n * Note that attribute properties are set as {@link module:ol/Object} properties on\n * the feature object, so they are observable, and have get/set accessors.\n *\n * Typically, a feature has a single geometry property. You can set the\n * geometry using the `setGeometry` method and get it with `getGeometry`.\n * It is possible to store more than one geometry on a feature using attribute\n * properties. By default, the geometry used for rendering is identified by\n * the property name `geometry`. If you want to use another geometry property\n * for rendering, use the `setGeometryName` method to change the attribute\n * property associated with the geometry for the feature.  For example:\n *\n * ```js\n *\n * import Feature from 'ol/Feature';\n * import Polygon from 'ol/geom/Polygon';\n * import Point from 'ol/geom/Point';\n *\n * var feature = new Feature({\n *   geometry: new Polygon(polyCoords),\n *   labelPoint: new Point(labelCoords),\n *   name: 'My Polygon'\n * });\n *\n * // get the polygon geometry\n * var poly = feature.getGeometry();\n *\n * // Render the feature as a point using the coordinates from labelPoint\n * feature.setGeometryName('labelPoint');\n *\n * // get the point geometry\n * var point = feature.getGeometry();\n * ```\n *\n * @api\n * @template {import(\"./geom/Geometry.js\").default} Geometry\n */\nvar Feature = /** @class */ (function (_super) {\n    __extends(Feature, _super);\n    /**\n     * @param {Geometry|Object<string, *>=} opt_geometryOrProperties\n     *     You may pass a Geometry object directly, or an object literal containing\n     *     properties. If you pass an object literal, you may include a Geometry\n     *     associated with a `geometry` key.\n     */\n    function Feature(opt_geometryOrProperties) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {number|string|undefined}\n         */\n        _this.id_ = undefined;\n        /**\n         * @type {string}\n         * @private\n         */\n        _this.geometryName_ = 'geometry';\n        /**\n         * User provided style.\n         * @private\n         * @type {import(\"./style/Style.js\").StyleLike}\n         */\n        _this.style_ = null;\n        /**\n         * @private\n         * @type {import(\"./style/Style.js\").StyleFunction|undefined}\n         */\n        _this.styleFunction_ = undefined;\n        /**\n         * @private\n         * @type {?import(\"./events.js\").EventsKey}\n         */\n        _this.geometryChangeKey_ = null;\n        _this.addEventListener(getChangeEventType(_this.geometryName_), _this.handleGeometryChanged_);\n        if (opt_geometryOrProperties) {\n            if (typeof /** @type {?} */ (opt_geometryOrProperties).getSimplifiedGeometry === 'function') {\n                var geometry = /** @type {Geometry} */ (opt_geometryOrProperties);\n                _this.setGeometry(geometry);\n            }\n            else {\n                /** @type {Object<string, *>} */\n                var properties = opt_geometryOrProperties;\n                _this.setProperties(properties);\n            }\n        }\n        return _this;\n    }\n    /**\n     * Clone this feature. If the original feature has a geometry it\n     * is also cloned. The feature id is not set in the clone.\n     * @return {Feature} The clone.\n     * @api\n     */\n    Feature.prototype.clone = function () {\n        var clone = new Feature(this.getProperties());\n        clone.setGeometryName(this.getGeometryName());\n        var geometry = this.getGeometry();\n        if (geometry) {\n            clone.setGeometry(geometry.clone());\n        }\n        var style = this.getStyle();\n        if (style) {\n            clone.setStyle(style);\n        }\n        return clone;\n    };\n    /**\n     * Get the feature's default geometry.  A feature may have any number of named\n     * geometries.  The \"default\" geometry (the one that is rendered by default) is\n     * set when calling {@link module:ol/Feature~Feature#setGeometry}.\n     * @return {Geometry|undefined} The default geometry for the feature.\n     * @api\n     * @observable\n     */\n    Feature.prototype.getGeometry = function () {\n        return (\n        /** @type {Geometry|undefined} */ (this.get(this.geometryName_)));\n    };\n    /**\n     * Get the feature identifier.  This is a stable identifier for the feature and\n     * is either set when reading data from a remote source or set explicitly by\n     * calling {@link module:ol/Feature~Feature#setId}.\n     * @return {number|string|undefined} Id.\n     * @api\n     */\n    Feature.prototype.getId = function () {\n        return this.id_;\n    };\n    /**\n     * Get the name of the feature's default geometry.  By default, the default\n     * geometry is named `geometry`.\n     * @return {string} Get the property name associated with the default geometry\n     *     for this feature.\n     * @api\n     */\n    Feature.prototype.getGeometryName = function () {\n        return this.geometryName_;\n    };\n    /**\n     * Get the feature's style. Will return what was provided to the\n     * {@link module:ol/Feature~Feature#setStyle} method.\n     * @return {import(\"./style/Style.js\").StyleLike} The feature style.\n     * @api\n     */\n    Feature.prototype.getStyle = function () {\n        return this.style_;\n    };\n    /**\n     * Get the feature's style function.\n     * @return {import(\"./style/Style.js\").StyleFunction|undefined} Return a function\n     * representing the current style of this feature.\n     * @api\n     */\n    Feature.prototype.getStyleFunction = function () {\n        return this.styleFunction_;\n    };\n    /**\n     * @private\n     */\n    Feature.prototype.handleGeometryChange_ = function () {\n        this.changed();\n    };\n    /**\n     * @private\n     */\n    Feature.prototype.handleGeometryChanged_ = function () {\n        if (this.geometryChangeKey_) {\n            unlistenByKey(this.geometryChangeKey_);\n            this.geometryChangeKey_ = null;\n        }\n        var geometry = this.getGeometry();\n        if (geometry) {\n            this.geometryChangeKey_ = listen(geometry, EventType.CHANGE, this.handleGeometryChange_, this);\n        }\n        this.changed();\n    };\n    /**\n     * Set the default geometry for the feature.  This will update the property\n     * with the name returned by {@link module:ol/Feature~Feature#getGeometryName}.\n     * @param {Geometry|undefined} geometry The new geometry.\n     * @api\n     * @observable\n     */\n    Feature.prototype.setGeometry = function (geometry) {\n        this.set(this.geometryName_, geometry);\n    };\n    /**\n     * Set the style for the feature.  This can be a single style object, an array\n     * of styles, or a function that takes a resolution and returns an array of\n     * styles. If it is `null` the feature has no style (a `null` style).\n     * @param {import(\"./style/Style.js\").StyleLike} style Style for this feature.\n     * @api\n     * @fires module:ol/events/Event~BaseEvent#event:change\n     */\n    Feature.prototype.setStyle = function (style) {\n        this.style_ = style;\n        this.styleFunction_ = !style ? undefined : createStyleFunction(style);\n        this.changed();\n    };\n    /**\n     * Set the feature id.  The feature id is considered stable and may be used when\n     * requesting features or comparing identifiers returned from a remote source.\n     * The feature id can be used with the\n     * {@link module:ol/source/Vector~VectorSource#getFeatureById} method.\n     * @param {number|string|undefined} id The feature id.\n     * @api\n     * @fires module:ol/events/Event~BaseEvent#event:change\n     */\n    Feature.prototype.setId = function (id) {\n        this.id_ = id;\n        this.changed();\n    };\n    /**\n     * Set the property name to be used when getting the feature's default geometry.\n     * When calling {@link module:ol/Feature~Feature#getGeometry}, the value of the property with\n     * this name will be returned.\n     * @param {string} name The property name of the default geometry.\n     * @api\n     */\n    Feature.prototype.setGeometryName = function (name) {\n        this.removeEventListener(getChangeEventType(this.geometryName_), this.handleGeometryChanged_);\n        this.geometryName_ = name;\n        this.addEventListener(getChangeEventType(this.geometryName_), this.handleGeometryChanged_);\n        this.handleGeometryChanged_();\n    };\n    return Feature;\n}(BaseObject));\n/**\n * Convert the provided object into a feature style function.  Functions passed\n * through unchanged.  Arrays of Style or single style objects wrapped\n * in a new feature style function.\n * @param {!import(\"./style/Style.js\").StyleFunction|!Array<import(\"./style/Style.js\").default>|!import(\"./style/Style.js\").default} obj\n *     A feature style function, a single style, or an array of styles.\n * @return {import(\"./style/Style.js\").StyleFunction} A style function.\n */\nexport function createStyleFunction(obj) {\n    if (typeof obj === 'function') {\n        return obj;\n    }\n    else {\n        /**\n         * @type {Array<import(\"./style/Style.js\").default>}\n         */\n        var styles_1;\n        if (Array.isArray(obj)) {\n            styles_1 = obj;\n        }\n        else {\n            assert(typeof /** @type {?} */ (obj).getZIndex === 'function', 41); // Expected an `import(\"./style/Style.js\").Style` or an array of `import(\"./style/Style.js\").Style`\n            var style = /** @type {import(\"./style/Style.js\").default} */ (obj);\n            styles_1 = [style];\n        }\n        return function () {\n            return styles_1;\n        };\n    }\n}\nexport default Feature;\n//# sourceMappingURL=Feature.js.map","/**\n * @module ol/ImageState\n */\n/**\n * @enum {number}\n */\nexport default {\n    IDLE: 0,\n    LOADING: 1,\n    LOADED: 2,\n    ERROR: 3,\n    EMPTY: 4\n};\n//# sourceMappingURL=ImageState.js.map","/**\n * @module ol/color\n */\nimport { assert } from './asserts.js';\nimport { clamp } from './math.js';\n/**\n * A color represented as a short array [red, green, blue, alpha].\n * red, green, and blue should be integers in the range 0..255 inclusive.\n * alpha should be a float in the range 0..1 inclusive. If no alpha value is\n * given then `1` will be used.\n * @typedef {Array<number>} Color\n * @api\n */\n/**\n * This RegExp matches # followed by 3, 4, 6, or 8 hex digits.\n * @const\n * @type {RegExp}\n * @private\n */\nvar HEX_COLOR_RE_ = /^#([a-f0-9]{3}|[a-f0-9]{4}(?:[a-f0-9]{2}){0,2})$/i;\n/**\n * Regular expression for matching potential named color style strings.\n * @const\n * @type {RegExp}\n * @private\n */\nvar NAMED_COLOR_RE_ = /^([a-z]*)$|^hsla?\\(.*\\)$/i;\n/**\n * Return the color as an rgba string.\n * @param {Color|string} color Color.\n * @return {string} Rgba string.\n * @api\n */\nexport function asString(color) {\n    if (typeof color === 'string') {\n        return color;\n    }\n    else {\n        return toString(color);\n    }\n}\n/**\n * Return named color as an rgba string.\n * @param {string} color Named color.\n * @return {string} Rgb string.\n */\nfunction fromNamed(color) {\n    var el = document.createElement('div');\n    el.style.color = color;\n    if (el.style.color !== '') {\n        document.body.appendChild(el);\n        var rgb = getComputedStyle(el).color;\n        document.body.removeChild(el);\n        return rgb;\n    }\n    else {\n        return '';\n    }\n}\n/**\n * @param {string} s String.\n * @return {Color} Color.\n */\nexport var fromString = (function () {\n    // We maintain a small cache of parsed strings.  To provide cheap LRU-like\n    // semantics, whenever the cache grows too large we simply delete an\n    // arbitrary 25% of the entries.\n    /**\n     * @const\n     * @type {number}\n     */\n    var MAX_CACHE_SIZE = 1024;\n    /**\n     * @type {Object<string, Color>}\n     */\n    var cache = {};\n    /**\n     * @type {number}\n     */\n    var cacheSize = 0;\n    return (\n    /**\n     * @param {string} s String.\n     * @return {Color} Color.\n     */\n    function (s) {\n        var color;\n        if (cache.hasOwnProperty(s)) {\n            color = cache[s];\n        }\n        else {\n            if (cacheSize >= MAX_CACHE_SIZE) {\n                var i = 0;\n                for (var key in cache) {\n                    if ((i++ & 3) === 0) {\n                        delete cache[key];\n                        --cacheSize;\n                    }\n                }\n            }\n            color = fromStringInternal_(s);\n            cache[s] = color;\n            ++cacheSize;\n        }\n        return color;\n    });\n})();\n/**\n * Return the color as an array. This function maintains a cache of calculated\n * arrays which means the result should not be modified.\n * @param {Color|string} color Color.\n * @return {Color} Color.\n * @api\n */\nexport function asArray(color) {\n    if (Array.isArray(color)) {\n        return color;\n    }\n    else {\n        return fromString(color);\n    }\n}\n/**\n * @param {string} s String.\n * @private\n * @return {Color} Color.\n */\nfunction fromStringInternal_(s) {\n    var r, g, b, a, color;\n    if (NAMED_COLOR_RE_.exec(s)) {\n        s = fromNamed(s);\n    }\n    if (HEX_COLOR_RE_.exec(s)) { // hex\n        var n = s.length - 1; // number of hex digits\n        var d = // number of digits per channel\n         void 0; // number of digits per channel\n        if (n <= 4) {\n            d = 1;\n        }\n        else {\n            d = 2;\n        }\n        var hasAlpha = n === 4 || n === 8;\n        r = parseInt(s.substr(1 + 0 * d, d), 16);\n        g = parseInt(s.substr(1 + 1 * d, d), 16);\n        b = parseInt(s.substr(1 + 2 * d, d), 16);\n        if (hasAlpha) {\n            a = parseInt(s.substr(1 + 3 * d, d), 16);\n        }\n        else {\n            a = 255;\n        }\n        if (d == 1) {\n            r = (r << 4) + r;\n            g = (g << 4) + g;\n            b = (b << 4) + b;\n            if (hasAlpha) {\n                a = (a << 4) + a;\n            }\n        }\n        color = [r, g, b, a / 255];\n    }\n    else if (s.indexOf('rgba(') == 0) { // rgba()\n        color = s.slice(5, -1).split(',').map(Number);\n        normalize(color);\n    }\n    else if (s.indexOf('rgb(') == 0) { // rgb()\n        color = s.slice(4, -1).split(',').map(Number);\n        color.push(1);\n        normalize(color);\n    }\n    else {\n        assert(false, 14); // Invalid color\n    }\n    return color;\n}\n/**\n * TODO this function is only used in the test, we probably shouldn't export it\n * @param {Color} color Color.\n * @return {Color} Clamped color.\n */\nexport function normalize(color) {\n    color[0] = clamp((color[0] + 0.5) | 0, 0, 255);\n    color[1] = clamp((color[1] + 0.5) | 0, 0, 255);\n    color[2] = clamp((color[2] + 0.5) | 0, 0, 255);\n    color[3] = clamp(color[3], 0, 1);\n    return color;\n}\n/**\n * @param {Color} color Color.\n * @return {string} String.\n */\nexport function toString(color) {\n    var r = color[0];\n    if (r != (r | 0)) {\n        r = (r + 0.5) | 0;\n    }\n    var g = color[1];\n    if (g != (g | 0)) {\n        g = (g + 0.5) | 0;\n    }\n    var b = color[2];\n    if (b != (b | 0)) {\n        b = (b + 0.5) | 0;\n    }\n    var a = color[3] === undefined ? 1 : color[3];\n    return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';\n}\n/**\n * @param {string} s String.\n * @return {boolean} Whether the string is actually a valid color\n */\nexport function isStringColor(s) {\n    if (NAMED_COLOR_RE_.test(s)) {\n        s = fromNamed(s);\n    }\n    return HEX_COLOR_RE_.test(s) || s.indexOf('rgba(') === 0 || s.indexOf('rgb(') === 0;\n}\n//# sourceMappingURL=color.js.map","/**\n * @module ol/style/IconAnchorUnits\n */\n/**\n * Icon anchor units. One of 'fraction', 'pixels'.\n * @enum {string}\n */\nexport default {\n    /**\n     * Anchor is a fraction\n     * @api\n     */\n    FRACTION: 'fraction',\n    /**\n     * Anchor is in pixels\n     * @api\n     */\n    PIXELS: 'pixels'\n};\n//# sourceMappingURL=IconAnchorUnits.js.map","/**\n * @module ol/style/IconImageCache\n */\nimport { asString } from '../color.js';\n/**\n * @classdesc\n * Singleton class. Available through {@link module:ol/style/IconImageCache~shared}.\n */\nvar IconImageCache = /** @class */ (function () {\n    function IconImageCache() {\n        /**\n        * @type {!Object<string, import(\"./IconImage.js\").default>}\n        * @private\n        */\n        this.cache_ = {};\n        /**\n        * @type {number}\n        * @private\n        */\n        this.cacheSize_ = 0;\n        /**\n        * @type {number}\n        * @private\n        */\n        this.maxCacheSize_ = 32;\n    }\n    /**\n    * FIXME empty description for jsdoc\n    */\n    IconImageCache.prototype.clear = function () {\n        this.cache_ = {};\n        this.cacheSize_ = 0;\n    };\n    /**\n     * @return {boolean} Can expire cache.\n     */\n    IconImageCache.prototype.canExpireCache = function () {\n        return this.cacheSize_ > this.maxCacheSize_;\n    };\n    /**\n    * FIXME empty description for jsdoc\n    */\n    IconImageCache.prototype.expire = function () {\n        if (this.canExpireCache()) {\n            var i = 0;\n            for (var key in this.cache_) {\n                var iconImage = this.cache_[key];\n                if ((i++ & 3) === 0 && !iconImage.hasListener()) {\n                    delete this.cache_[key];\n                    --this.cacheSize_;\n                }\n            }\n        }\n    };\n    /**\n    * @param {string} src Src.\n    * @param {?string} crossOrigin Cross origin.\n    * @param {import(\"../color.js\").Color} color Color.\n    * @return {import(\"./IconImage.js\").default} Icon image.\n    */\n    IconImageCache.prototype.get = function (src, crossOrigin, color) {\n        var key = getKey(src, crossOrigin, color);\n        return key in this.cache_ ? this.cache_[key] : null;\n    };\n    /**\n    * @param {string} src Src.\n    * @param {?string} crossOrigin Cross origin.\n    * @param {import(\"../color.js\").Color} color Color.\n    * @param {import(\"./IconImage.js\").default} iconImage Icon image.\n    */\n    IconImageCache.prototype.set = function (src, crossOrigin, color, iconImage) {\n        var key = getKey(src, crossOrigin, color);\n        this.cache_[key] = iconImage;\n        ++this.cacheSize_;\n    };\n    /**\n    * Set the cache size of the icon cache. Default is `32`. Change this value when\n    * your map uses more than 32 different icon images and you are not caching icon\n    * styles on the application level.\n    * @param {number} maxCacheSize Cache max size.\n    * @api\n    */\n    IconImageCache.prototype.setSize = function (maxCacheSize) {\n        this.maxCacheSize_ = maxCacheSize;\n        this.expire();\n    };\n    return IconImageCache;\n}());\n/**\n * @param {string} src Src.\n * @param {?string} crossOrigin Cross origin.\n * @param {import(\"../color.js\").Color} color Color.\n * @return {string} Cache key.\n */\nfunction getKey(src, crossOrigin, color) {\n    var colorString = color ? asString(color) : 'null';\n    return crossOrigin + ':' + src + ':' + colorString;\n}\nexport default IconImageCache;\n/**\n * The {@link module:ol/style/IconImageCache~IconImageCache} for\n * {@link module:ol/style/Icon~Icon} images.\n * @api\n */\nexport var shared = new IconImageCache();\n//# sourceMappingURL=IconImageCache.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/ImageBase\n */\nimport { abstract } from './util.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\n/**\n * @abstract\n */\nvar ImageBase = /** @class */ (function (_super) {\n    __extends(ImageBase, _super);\n    /**\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {number|undefined} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"./ImageState.js\").default} state State.\n     */\n    function ImageBase(extent, resolution, pixelRatio, state) {\n        var _this = _super.call(this) || this;\n        /**\n         * @protected\n         * @type {import(\"./extent.js\").Extent}\n         */\n        _this.extent = extent;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.pixelRatio_ = pixelRatio;\n        /**\n         * @protected\n         * @type {number|undefined}\n         */\n        _this.resolution = resolution;\n        /**\n         * @protected\n         * @type {import(\"./ImageState.js\").default}\n         */\n        _this.state = state;\n        return _this;\n    }\n    /**\n     * @protected\n     */\n    ImageBase.prototype.changed = function () {\n        this.dispatchEvent(EventType.CHANGE);\n    };\n    /**\n     * @return {import(\"./extent.js\").Extent} Extent.\n     */\n    ImageBase.prototype.getExtent = function () {\n        return this.extent;\n    };\n    /**\n     * @abstract\n     * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n     */\n    ImageBase.prototype.getImage = function () {\n        return abstract();\n    };\n    /**\n     * @return {number} PixelRatio.\n     */\n    ImageBase.prototype.getPixelRatio = function () {\n        return this.pixelRatio_;\n    };\n    /**\n     * @return {number} Resolution.\n     */\n    ImageBase.prototype.getResolution = function () {\n        return /** @type {number} */ (this.resolution);\n    };\n    /**\n     * @return {import(\"./ImageState.js\").default} State.\n     */\n    ImageBase.prototype.getState = function () {\n        return this.state;\n    };\n    /**\n     * Load not yet loaded URI.\n     * @abstract\n     */\n    ImageBase.prototype.load = function () {\n        abstract();\n    };\n    return ImageBase;\n}(EventTarget));\nexport default ImageBase;\n//# sourceMappingURL=ImageBase.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Image\n */\nimport ImageBase from './ImageBase.js';\nimport ImageState from './ImageState.js';\nimport { listenOnce, unlistenByKey } from './events.js';\nimport EventType from './events/EventType.js';\nimport { getHeight } from './extent.js';\nimport { IMAGE_DECODE } from './has.js';\n/**\n * A function that takes an {@link module:ol/Image~Image} for the image and a\n * `{string}` for the src as arguments. It is supposed to make it so the\n * underlying image {@link module:ol/Image~Image#getImage} is assigned the\n * content specified by the src. If not specified, the default is\n *\n *     function(image, src) {\n *       image.getImage().src = src;\n *     }\n *\n * Providing a custom `imageLoadFunction` can be useful to load images with\n * post requests or - in general - through XHR requests, where the src of the\n * image element would be set to a data URI when the content is loaded.\n *\n * @typedef {function(ImageWrapper, string): void} LoadFunction\n * @api\n */\nvar ImageWrapper = /** @class */ (function (_super) {\n    __extends(ImageWrapper, _super);\n    /**\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {number|undefined} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {string} src Image source URI.\n     * @param {?string} crossOrigin Cross origin.\n     * @param {LoadFunction} imageLoadFunction Image load function.\n     */\n    function ImageWrapper(extent, resolution, pixelRatio, src, crossOrigin, imageLoadFunction) {\n        var _this = _super.call(this, extent, resolution, pixelRatio, ImageState.IDLE) || this;\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.src_ = src;\n        /**\n         * @private\n         * @type {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement}\n         */\n        _this.image_ = new Image();\n        if (crossOrigin !== null) {\n            _this.image_.crossOrigin = crossOrigin;\n        }\n        /**\n         * @private\n         * @type {?function():void}\n         */\n        _this.unlisten_ = null;\n        /**\n         * @protected\n         * @type {ImageState}\n         */\n        _this.state = ImageState.IDLE;\n        /**\n         * @private\n         * @type {LoadFunction}\n         */\n        _this.imageLoadFunction_ = imageLoadFunction;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     * @api\n     */\n    ImageWrapper.prototype.getImage = function () {\n        return this.image_;\n    };\n    /**\n     * Tracks loading or read errors.\n     *\n     * @private\n     */\n    ImageWrapper.prototype.handleImageError_ = function () {\n        this.state = ImageState.ERROR;\n        this.unlistenImage_();\n        this.changed();\n    };\n    /**\n     * Tracks successful image load.\n     *\n     * @private\n     */\n    ImageWrapper.prototype.handleImageLoad_ = function () {\n        if (this.resolution === undefined) {\n            this.resolution = getHeight(this.extent) / this.image_.height;\n        }\n        this.state = ImageState.LOADED;\n        this.unlistenImage_();\n        this.changed();\n    };\n    /**\n     * Load the image or retry if loading previously failed.\n     * Loading is taken care of by the tile queue, and calling this method is\n     * only needed for preloading or for reloading in case of an error.\n     * @override\n     * @api\n     */\n    ImageWrapper.prototype.load = function () {\n        if (this.state == ImageState.IDLE || this.state == ImageState.ERROR) {\n            this.state = ImageState.LOADING;\n            this.changed();\n            this.imageLoadFunction_(this, this.src_);\n            this.unlisten_ = listenImage(this.image_, this.handleImageLoad_.bind(this), this.handleImageError_.bind(this));\n        }\n    };\n    /**\n     * @param {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} image Image.\n     */\n    ImageWrapper.prototype.setImage = function (image) {\n        this.image_ = image;\n    };\n    /**\n     * Discards event handlers which listen for load completion or errors.\n     *\n     * @private\n     */\n    ImageWrapper.prototype.unlistenImage_ = function () {\n        if (this.unlisten_) {\n            this.unlisten_();\n            this.unlisten_ = null;\n        }\n    };\n    return ImageWrapper;\n}(ImageBase));\n/**\n * @param {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} image Image element.\n * @param {function():any} loadHandler Load callback function.\n * @param {function():any} errorHandler Error callback function.\n * @return {function():void} Callback to stop listening.\n */\nexport function listenImage(image, loadHandler, errorHandler) {\n    var img = /** @type {HTMLImageElement} */ (image);\n    if (img.src && IMAGE_DECODE) {\n        var promise = img.decode();\n        var listening_1 = true;\n        var unlisten = function () {\n            listening_1 = false;\n        };\n        promise.then(function () {\n            if (listening_1) {\n                loadHandler();\n            }\n        }).catch(function (error) {\n            if (listening_1) {\n                // FIXME: Unconditionally call errorHandler() when this bug is fixed upstream:\n                //        https://bugs.webkit.org/show_bug.cgi?id=198527\n                if (error.name === 'EncodingError' && error.message === 'Invalid image type.') {\n                    loadHandler();\n                }\n                else {\n                    errorHandler();\n                }\n            }\n        });\n        return unlisten;\n    }\n    var listenerKeys = [\n        listenOnce(img, EventType.LOAD, loadHandler),\n        listenOnce(img, EventType.ERROR, errorHandler)\n    ];\n    return function unlisten() {\n        listenerKeys.forEach(unlistenByKey);\n    };\n}\nexport default ImageWrapper;\n//# sourceMappingURL=Image.js.map","/**\n * @module ol/style/IconImage\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport { createCanvasContext2D } from '../dom.js';\nimport EventTarget from '../events/Target.js';\nimport EventType from '../events/EventType.js';\nimport ImageState from '../ImageState.js';\nimport { shared as iconImageCache } from './IconImageCache.js';\nimport { listenImage } from '../Image.js';\nvar IconImage = /** @class */ (function (_super) {\n    __extends(IconImage, _super);\n    /**\n     * @param {HTMLImageElement|HTMLCanvasElement} image Image.\n     * @param {string|undefined} src Src.\n     * @param {import(\"../size.js\").Size} size Size.\n     * @param {?string} crossOrigin Cross origin.\n     * @param {import(\"../ImageState.js\").default} imageState Image state.\n     * @param {import(\"../color.js\").Color} color Color.\n     */\n    function IconImage(image, src, size, crossOrigin, imageState, color) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {HTMLImageElement|HTMLCanvasElement}\n         */\n        _this.hitDetectionImage_ = null;\n        /**\n         * @private\n         * @type {HTMLImageElement|HTMLCanvasElement}\n         */\n        _this.image_ = !image ? new Image() : image;\n        if (crossOrigin !== null) {\n            /** @type {HTMLImageElement} */ (_this.image_).crossOrigin = crossOrigin;\n        }\n        /**\n         * @private\n         * @type {HTMLCanvasElement}\n         */\n        _this.canvas_ = color ? document.createElement('canvas') : null;\n        /**\n         * @private\n         * @type {import(\"../color.js\").Color}\n         */\n        _this.color_ = color;\n        /**\n         * @private\n         * @type {?function():void}\n         */\n        _this.unlisten_ = null;\n        /**\n         * @private\n         * @type {import(\"../ImageState.js\").default}\n         */\n        _this.imageState_ = imageState;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.size_ = size;\n        /**\n         * @private\n         * @type {string|undefined}\n         */\n        _this.src_ = src;\n        /**\n         * @private\n         * @type {boolean|undefined}\n         */\n        _this.tainted_;\n        return _this;\n    }\n    /**\n     * @private\n     * @param {CanvasRenderingContext2D=} context A context with the image already drawn into.\n     * @return {boolean} The image canvas is tainted.\n     */\n    IconImage.prototype.isTainted_ = function (context) {\n        if (this.tainted_ === undefined && this.imageState_ === ImageState.LOADED) {\n            if (!context) {\n                context = createCanvasContext2D(1, 1);\n                context.drawImage(this.image_, 0, 0);\n            }\n            try {\n                context.getImageData(0, 0, 1, 1);\n                this.tainted_ = false;\n            }\n            catch (e) {\n                this.tainted_ = true;\n            }\n        }\n        return this.tainted_ === true;\n    };\n    /**\n     * @private\n     */\n    IconImage.prototype.dispatchChangeEvent_ = function () {\n        this.dispatchEvent(EventType.CHANGE);\n    };\n    /**\n     * @private\n     */\n    IconImage.prototype.handleImageError_ = function () {\n        this.imageState_ = ImageState.ERROR;\n        this.unlistenImage_();\n        this.dispatchChangeEvent_();\n    };\n    /**\n     * @private\n     */\n    IconImage.prototype.handleImageLoad_ = function () {\n        this.imageState_ = ImageState.LOADED;\n        if (this.size_) {\n            this.image_.width = this.size_[0];\n            this.image_.height = this.size_[1];\n        }\n        this.size_ = [this.image_.width, this.image_.height];\n        this.unlistenImage_();\n        this.replaceColor_();\n        this.dispatchChangeEvent_();\n    };\n    /**\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {HTMLImageElement|HTMLCanvasElement} Image or Canvas element.\n     */\n    IconImage.prototype.getImage = function (pixelRatio) {\n        return this.canvas_ ? this.canvas_ : this.image_;\n    };\n    /**\n     * @return {import(\"../ImageState.js\").default} Image state.\n     */\n    IconImage.prototype.getImageState = function () {\n        return this.imageState_;\n    };\n    /**\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {HTMLImageElement|HTMLCanvasElement} Image element.\n     */\n    IconImage.prototype.getHitDetectionImage = function (pixelRatio) {\n        if (!this.hitDetectionImage_) {\n            if (this.isTainted_()) {\n                var width = this.size_[0];\n                var height = this.size_[1];\n                var context = createCanvasContext2D(width, height);\n                context.fillRect(0, 0, width, height);\n                this.hitDetectionImage_ = context.canvas;\n            }\n            else {\n                this.hitDetectionImage_ = this.image_;\n            }\n        }\n        return this.hitDetectionImage_;\n    };\n    /**\n     * @return {import(\"../size.js\").Size} Image size.\n     */\n    IconImage.prototype.getSize = function () {\n        return this.size_;\n    };\n    /**\n     * @return {string|undefined} Image src.\n     */\n    IconImage.prototype.getSrc = function () {\n        return this.src_;\n    };\n    /**\n     * Load not yet loaded URI.\n     */\n    IconImage.prototype.load = function () {\n        if (this.imageState_ == ImageState.IDLE) {\n            this.imageState_ = ImageState.LOADING;\n            try {\n                /** @type {HTMLImageElement} */ (this.image_).src = this.src_;\n            }\n            catch (e) {\n                this.handleImageError_();\n            }\n            this.unlisten_ = listenImage(this.image_, this.handleImageLoad_.bind(this), this.handleImageError_.bind(this));\n        }\n    };\n    /**\n     * @private\n     */\n    IconImage.prototype.replaceColor_ = function () {\n        if (!this.color_) {\n            return;\n        }\n        this.canvas_.width = this.image_.width;\n        this.canvas_.height = this.image_.height;\n        var ctx = this.canvas_.getContext('2d');\n        ctx.drawImage(this.image_, 0, 0);\n        if (this.isTainted_(ctx)) {\n            // If reading from the canvas throws a SecurityError the same effect can be\n            // achieved with globalCompositeOperation.\n            // This could be used as the default, but it is not fully supported by all\n            // browsers. E. g. Internet Explorer 11 does not support the multiply\n            // operation and the resulting image shape will be completelly filled with\n            // the provided color.\n            // So this is only used as a fallback. It is still better than having no icon\n            // at all.\n            var c = this.color_;\n            ctx.globalCompositeOperation = 'multiply';\n            ctx.fillStyle = 'rgb(' + c[0] + ',' + c[1] + ',' + c[2] + ')';\n            ctx.fillRect(0, 0, this.image_.width, this.image_.height);\n            ctx.globalCompositeOperation = 'destination-in';\n            ctx.drawImage(this.image_, 0, 0);\n            return;\n        }\n        var imgData = ctx.getImageData(0, 0, this.image_.width, this.image_.height);\n        var data = imgData.data;\n        var r = this.color_[0] / 255.0;\n        var g = this.color_[1] / 255.0;\n        var b = this.color_[2] / 255.0;\n        for (var i = 0, ii = data.length; i < ii; i += 4) {\n            data[i] *= r;\n            data[i + 1] *= g;\n            data[i + 2] *= b;\n        }\n        ctx.putImageData(imgData, 0, 0);\n    };\n    /**\n     * Discards event handlers which listen for load completion or errors.\n     *\n     * @private\n     */\n    IconImage.prototype.unlistenImage_ = function () {\n        if (this.unlisten_) {\n            this.unlisten_();\n            this.unlisten_ = null;\n        }\n    };\n    return IconImage;\n}(EventTarget));\n/**\n * @param {HTMLImageElement|HTMLCanvasElement} image Image.\n * @param {string} src Src.\n * @param {import(\"../size.js\").Size} size Size.\n * @param {?string} crossOrigin Cross origin.\n * @param {import(\"../ImageState.js\").default} imageState Image state.\n * @param {import(\"../color.js\").Color} color Color.\n * @return {IconImage} Icon image.\n */\nexport function get(image, src, size, crossOrigin, imageState, color) {\n    var iconImage = iconImageCache.get(src, crossOrigin, color);\n    if (!iconImage) {\n        iconImage = new IconImage(image, src, size, crossOrigin, imageState, color);\n        iconImageCache.set(src, crossOrigin, color, iconImage);\n    }\n    return iconImage;\n}\nexport default IconImage;\n//# sourceMappingURL=IconImage.js.map","/**\n * @module ol/style/IconOrigin\n */\n/**\n * Icon origin. One of 'bottom-left', 'bottom-right', 'top-left', 'top-right'.\n * @enum {string}\n */\nexport default {\n    /**\n     * Origin is at bottom left\n     * @api\n     */\n    BOTTOM_LEFT: 'bottom-left',\n    /**\n     * Origin is at bottom right\n     * @api\n     */\n    BOTTOM_RIGHT: 'bottom-right',\n    /**\n     * Origin is at top left\n     * @api\n     */\n    TOP_LEFT: 'top-left',\n    /**\n     * Origin is at top right\n     * @api\n     */\n    TOP_RIGHT: 'top-right'\n};\n//# sourceMappingURL=IconOrigin.js.map","/**\n * @module ol/style/Image\n */\nimport { abstract } from '../util.js';\n/**\n * @typedef {Object} Options\n * @property {number} opacity\n * @property {boolean} rotateWithView\n * @property {number} rotation\n * @property {number} scale\n * @property {Array<number>} displacement\n */\n/**\n * @classdesc\n * A base class used for creating subclasses and not instantiated in\n * apps. Base class for {@link module:ol/style/Icon~Icon}, {@link module:ol/style/Circle~CircleStyle} and\n * {@link module:ol/style/RegularShape~RegularShape}.\n * @abstract\n * @api\n */\nvar ImageStyle = /** @class */ (function () {\n    /**\n     * @param {Options} options Options.\n     */\n    function ImageStyle(options) {\n        /**\n         * @private\n         * @type {number}\n         */\n        this.opacity_ = options.opacity;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        this.rotateWithView_ = options.rotateWithView;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.rotation_ = options.rotation;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.scale_ = options.scale;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        this.displacement_ = options.displacement;\n    }\n    /**\n     * Clones the style.\n     * @return {ImageStyle} The cloned style.\n     * @api\n     */\n    ImageStyle.prototype.clone = function () {\n        return new ImageStyle({\n            opacity: this.getOpacity(),\n            scale: this.getScale(),\n            rotation: this.getRotation(),\n            rotateWithView: this.getRotateWithView(),\n            displacement: this.getDisplacement().slice()\n        });\n    };\n    /**\n     * Get the symbolizer opacity.\n     * @return {number} Opacity.\n     * @api\n     */\n    ImageStyle.prototype.getOpacity = function () {\n        return this.opacity_;\n    };\n    /**\n     * Determine whether the symbolizer rotates with the map.\n     * @return {boolean} Rotate with map.\n     * @api\n     */\n    ImageStyle.prototype.getRotateWithView = function () {\n        return this.rotateWithView_;\n    };\n    /**\n     * Get the symoblizer rotation.\n     * @return {number} Rotation.\n     * @api\n     */\n    ImageStyle.prototype.getRotation = function () {\n        return this.rotation_;\n    };\n    /**\n     * Get the symbolizer scale.\n     * @return {number} Scale.\n     * @api\n     */\n    ImageStyle.prototype.getScale = function () {\n        return this.scale_;\n    };\n    /**\n     * Get the displacement of the shape\n     * @return {Array<number>} Shape's center displacement\n     * @api\n     */\n    ImageStyle.prototype.getDisplacement = function () {\n        return this.displacement_;\n    };\n    /**\n     * Get the anchor point in pixels. The anchor determines the center point for the\n     * symbolizer.\n     * @abstract\n     * @return {Array<number>} Anchor.\n     */\n    ImageStyle.prototype.getAnchor = function () {\n        return abstract();\n    };\n    /**\n     * Get the image element for the symbolizer.\n     * @abstract\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement} Image element.\n     */\n    ImageStyle.prototype.getImage = function (pixelRatio) {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement} Image element.\n     */\n    ImageStyle.prototype.getHitDetectionImage = function (pixelRatio) {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @return {import(\"../ImageState.js\").default} Image state.\n     */\n    ImageStyle.prototype.getImageState = function () {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @return {import(\"../size.js\").Size} Image size.\n     */\n    ImageStyle.prototype.getImageSize = function () {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @return {import(\"../size.js\").Size} Size of the hit-detection image.\n     */\n    ImageStyle.prototype.getHitDetectionImageSize = function () {\n        return abstract();\n    };\n    /**\n     * Get the origin of the symbolizer.\n     * @abstract\n     * @return {Array<number>} Origin.\n     */\n    ImageStyle.prototype.getOrigin = function () {\n        return abstract();\n    };\n    /**\n     * Get the size of the symbolizer (in pixels).\n     * @abstract\n     * @return {import(\"../size.js\").Size} Size.\n     */\n    ImageStyle.prototype.getSize = function () {\n        return abstract();\n    };\n    /**\n     * Set the opacity.\n     *\n     * @param {number} opacity Opacity.\n     * @api\n     */\n    ImageStyle.prototype.setOpacity = function (opacity) {\n        this.opacity_ = opacity;\n    };\n    /**\n     * Set whether to rotate the style with the view.\n     *\n     * @param {boolean} rotateWithView Rotate with map.\n     * @api\n     */\n    ImageStyle.prototype.setRotateWithView = function (rotateWithView) {\n        this.rotateWithView_ = rotateWithView;\n    };\n    /**\n     * Set the rotation.\n     *\n     * @param {number} rotation Rotation.\n     * @api\n     */\n    ImageStyle.prototype.setRotation = function (rotation) {\n        this.rotation_ = rotation;\n    };\n    /**\n     * Set the scale.\n     *\n     * @param {number} scale Scale.\n     * @api\n     */\n    ImageStyle.prototype.setScale = function (scale) {\n        this.scale_ = scale;\n    };\n    /**\n     * @abstract\n     * @param {function(import(\"../events/Event.js\").default): void} listener Listener function.\n     * @template T\n     */\n    ImageStyle.prototype.listenImageChange = function (listener) {\n        abstract();\n    };\n    /**\n     * Load not yet loaded URI.\n     * @abstract\n     */\n    ImageStyle.prototype.load = function () {\n        abstract();\n    };\n    /**\n     * @abstract\n     * @param {function(import(\"../events/Event.js\").default): void} listener Listener function.\n     * @template T\n     */\n    ImageStyle.prototype.unlistenImageChange = function (listener) {\n        abstract();\n    };\n    return ImageStyle;\n}());\nexport default ImageStyle;\n//# sourceMappingURL=Image.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/style/Icon\n */\nimport { getUid } from '../util.js';\nimport ImageState from '../ImageState.js';\nimport { assert } from '../asserts.js';\nimport { asArray } from '../color.js';\nimport EventType from '../events/EventType.js';\nimport IconAnchorUnits from './IconAnchorUnits.js';\nimport { get as getIconImage } from './IconImage.js';\nimport IconOrigin from './IconOrigin.js';\nimport ImageStyle from './Image.js';\n/**\n * @typedef {Object} Options\n * @property {Array<number>} [anchor=[0.5, 0.5]] Anchor. Default value is the icon center.\n * @property {import(\"./IconOrigin.js\").default} [anchorOrigin='top-left'] Origin of the anchor: `bottom-left`, `bottom-right`,\n * `top-left` or `top-right`.\n * @property {import(\"./IconAnchorUnits.js\").default} [anchorXUnits='fraction'] Units in which the anchor x value is\n * specified. A value of `'fraction'` indicates the x value is a fraction of the icon. A value of `'pixels'` indicates\n * the x value in pixels.\n * @property {import(\"./IconAnchorUnits.js\").default} [anchorYUnits='fraction'] Units in which the anchor y value is\n * specified. A value of `'fraction'` indicates the y value is a fraction of the icon. A value of `'pixels'` indicates\n * the y value in pixels.\n * @property {import(\"../color.js\").Color|string} [color] Color to tint the icon. If not specified,\n * the icon will be left as is.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images. Note that you must provide a\n * `crossOrigin` value if you want to access pixel data with the Canvas renderer.\n * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {HTMLImageElement|HTMLCanvasElement} [img] Image object for the icon. If the `src` option is not provided then the\n * provided image must already be loaded. And in that case, it is required\n * to provide the size of the image, with the `imgSize` option.\n * @property {Array<number>} [offset=[0, 0]] Offset, which, together with the size and the offset origin, define the\n * sub-rectangle to use from the original icon image.\n * @property {Array<number>} [displacement=[0,0]] Displacement the icon\n * @property {import(\"./IconOrigin.js\").default} [offsetOrigin='top-left'] Origin of the offset: `bottom-left`, `bottom-right`,\n * `top-left` or `top-right`.\n * @property {number} [opacity=1] Opacity of the icon.\n * @property {number} [scale=1] Scale.\n * @property {boolean} [rotateWithView=false] Whether to rotate the icon with the view.\n * @property {number} [rotation=0] Rotation in radians (positive rotation clockwise).\n * @property {import(\"../size.js\").Size} [size] Icon size in pixel. Can be used together with `offset` to define the\n * sub-rectangle to use from the origin (sprite) icon image.\n * @property {import(\"../size.js\").Size} [imgSize] Image size in pixels. Only required if `img` is set and `src` is not, and\n * for SVG images in Internet Explorer 11. The provided `imgSize` needs to match the actual size of the image.\n * @property {string} [src] Image source URI.\n */\n/**\n * @classdesc\n * Set icon style for vector features.\n * @api\n */\nvar Icon = /** @class */ (function (_super) {\n    __extends(Icon, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function Icon(opt_options) {\n        var _this = this;\n        var options = opt_options || {};\n        /**\n         * @type {number}\n         */\n        var opacity = options.opacity !== undefined ? options.opacity : 1;\n        /**\n         * @type {number}\n         */\n        var rotation = options.rotation !== undefined ? options.rotation : 0;\n        /**\n         * @type {number}\n         */\n        var scale = options.scale !== undefined ? options.scale : 1;\n        /**\n         * @type {boolean}\n         */\n        var rotateWithView = options.rotateWithView !== undefined ?\n            options.rotateWithView : false;\n        _this = _super.call(this, {\n            opacity: opacity,\n            rotation: rotation,\n            scale: scale,\n            displacement: options.displacement !== undefined ? options.displacement : [0, 0],\n            rotateWithView: rotateWithView\n        }) || this;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.anchor_ = options.anchor !== undefined ? options.anchor : [0.5, 0.5];\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.normalizedAnchor_ = null;\n        /**\n         * @private\n         * @type {import(\"./IconOrigin.js\").default}\n         */\n        _this.anchorOrigin_ = options.anchorOrigin !== undefined ?\n            options.anchorOrigin : IconOrigin.TOP_LEFT;\n        /**\n         * @private\n         * @type {import(\"./IconAnchorUnits.js\").default}\n         */\n        _this.anchorXUnits_ = options.anchorXUnits !== undefined ?\n            options.anchorXUnits : IconAnchorUnits.FRACTION;\n        /**\n         * @private\n         * @type {import(\"./IconAnchorUnits.js\").default}\n         */\n        _this.anchorYUnits_ = options.anchorYUnits !== undefined ?\n            options.anchorYUnits : IconAnchorUnits.FRACTION;\n        /**\n         * @private\n         * @type {?string}\n         */\n        _this.crossOrigin_ =\n            options.crossOrigin !== undefined ? options.crossOrigin : null;\n        /**\n         * @type {HTMLImageElement|HTMLCanvasElement}\n         */\n        var image = options.img !== undefined ? options.img : null;\n        /**\n         * @type {import(\"../size.js\").Size}\n         */\n        var imgSize = options.imgSize !== undefined ? options.imgSize : null;\n        /**\n         * @type {string|undefined}\n         */\n        var src = options.src;\n        assert(!(src !== undefined && image), 4); // `image` and `src` cannot be provided at the same time\n        assert(!image || (image && imgSize), 5); // `imgSize` must be set when `image` is provided\n        if ((src === undefined || src.length === 0) && image) {\n            src = /** @type {HTMLImageElement} */ (image).src || getUid(image);\n        }\n        assert(src !== undefined && src.length > 0, 6); // A defined and non-empty `src` or `image` must be provided\n        /**\n         * @type {import(\"../ImageState.js\").default}\n         */\n        var imageState = options.src !== undefined ?\n            ImageState.IDLE : ImageState.LOADED;\n        /**\n         * @private\n         * @type {import(\"../color.js\").Color}\n         */\n        _this.color_ = options.color !== undefined ? asArray(options.color) : null;\n        /**\n         * @private\n         * @type {import(\"./IconImage.js\").default}\n         */\n        _this.iconImage_ = getIconImage(image, /** @type {string} */ (src), imgSize, _this.crossOrigin_, imageState, _this.color_);\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.offset_ = options.offset !== undefined ? options.offset : [0, 0];\n        /**\n         * @private\n         * @type {import(\"./IconOrigin.js\").default}\n         */\n        _this.offsetOrigin_ = options.offsetOrigin !== undefined ?\n            options.offsetOrigin : IconOrigin.TOP_LEFT;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.origin_ = null;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.size_ = options.size !== undefined ? options.size : null;\n        return _this;\n    }\n    /**\n     * Clones the style. The underlying Image/HTMLCanvasElement is not cloned.\n     * @return {Icon} The cloned style.\n     * @api\n     */\n    Icon.prototype.clone = function () {\n        return new Icon({\n            anchor: this.anchor_.slice(),\n            anchorOrigin: this.anchorOrigin_,\n            anchorXUnits: this.anchorXUnits_,\n            anchorYUnits: this.anchorYUnits_,\n            crossOrigin: this.crossOrigin_,\n            color: (this.color_ && this.color_.slice) ? this.color_.slice() : this.color_ || undefined,\n            src: this.getSrc(),\n            offset: this.offset_.slice(),\n            offsetOrigin: this.offsetOrigin_,\n            size: this.size_ !== null ? this.size_.slice() : undefined,\n            opacity: this.getOpacity(),\n            scale: this.getScale(),\n            rotation: this.getRotation(),\n            rotateWithView: this.getRotateWithView()\n        });\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Icon.prototype.getAnchor = function () {\n        if (this.normalizedAnchor_) {\n            return this.normalizedAnchor_;\n        }\n        var anchor = this.anchor_;\n        var size = this.getSize();\n        if (this.anchorXUnits_ == IconAnchorUnits.FRACTION ||\n            this.anchorYUnits_ == IconAnchorUnits.FRACTION) {\n            if (!size) {\n                return null;\n            }\n            anchor = this.anchor_.slice();\n            if (this.anchorXUnits_ == IconAnchorUnits.FRACTION) {\n                anchor[0] *= size[0];\n            }\n            if (this.anchorYUnits_ == IconAnchorUnits.FRACTION) {\n                anchor[1] *= size[1];\n            }\n        }\n        if (this.anchorOrigin_ != IconOrigin.TOP_LEFT) {\n            if (!size) {\n                return null;\n            }\n            if (anchor === this.anchor_) {\n                anchor = this.anchor_.slice();\n            }\n            if (this.anchorOrigin_ == IconOrigin.TOP_RIGHT ||\n                this.anchorOrigin_ == IconOrigin.BOTTOM_RIGHT) {\n                anchor[0] = -anchor[0] + size[0];\n            }\n            if (this.anchorOrigin_ == IconOrigin.BOTTOM_LEFT ||\n                this.anchorOrigin_ == IconOrigin.BOTTOM_RIGHT) {\n                anchor[1] = -anchor[1] + size[1];\n            }\n        }\n        this.normalizedAnchor_ = anchor;\n        return this.normalizedAnchor_;\n    };\n    /**\n     * Set the anchor point. The anchor determines the center point for the\n     * symbolizer.\n     *\n     * @param {Array<number>} anchor Anchor.\n     * @api\n     */\n    Icon.prototype.setAnchor = function (anchor) {\n        this.anchor_ = anchor;\n        this.normalizedAnchor_ = null;\n    };\n    /**\n     * Get the icon color.\n     * @return {import(\"../color.js\").Color} Color.\n     * @api\n     */\n    Icon.prototype.getColor = function () {\n        return this.color_;\n    };\n    /**\n     * Get the image icon.\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {HTMLImageElement|HTMLCanvasElement} Image or Canvas element.\n     * @override\n     * @api\n     */\n    Icon.prototype.getImage = function (pixelRatio) {\n        return this.iconImage_.getImage(pixelRatio);\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.getImageSize = function () {\n        return this.iconImage_.getSize();\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.getHitDetectionImageSize = function () {\n        return this.getImageSize();\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.getImageState = function () {\n        return this.iconImage_.getImageState();\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.getHitDetectionImage = function (pixelRatio) {\n        return this.iconImage_.getHitDetectionImage(pixelRatio);\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Icon.prototype.getOrigin = function () {\n        if (this.origin_) {\n            return this.origin_;\n        }\n        var offset = this.offset_;\n        var displacement = this.getDisplacement();\n        if (this.offsetOrigin_ != IconOrigin.TOP_LEFT) {\n            var size = this.getSize();\n            var iconImageSize = this.iconImage_.getSize();\n            if (!size || !iconImageSize) {\n                return null;\n            }\n            offset = offset.slice();\n            if (this.offsetOrigin_ == IconOrigin.TOP_RIGHT ||\n                this.offsetOrigin_ == IconOrigin.BOTTOM_RIGHT) {\n                offset[0] = iconImageSize[0] - size[0] - offset[0];\n            }\n            if (this.offsetOrigin_ == IconOrigin.BOTTOM_LEFT ||\n                this.offsetOrigin_ == IconOrigin.BOTTOM_RIGHT) {\n                offset[1] = iconImageSize[1] - size[1] - offset[1];\n            }\n        }\n        offset[0] += displacement[0];\n        offset[1] += displacement[1];\n        this.origin_ = offset;\n        return this.origin_;\n    };\n    /**\n     * Get the image URL.\n     * @return {string|undefined} Image src.\n     * @api\n     */\n    Icon.prototype.getSrc = function () {\n        return this.iconImage_.getSrc();\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    Icon.prototype.getSize = function () {\n        return !this.size_ ? this.iconImage_.getSize() : this.size_;\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.listenImageChange = function (listener) {\n        this.iconImage_.addEventListener(EventType.CHANGE, listener);\n    };\n    /**\n     * Load not yet loaded URI.\n     * When rendering a feature with an icon style, the vector renderer will\n     * automatically call this method. However, you might want to call this\n     * method yourself for preloading or other purposes.\n     * @override\n     * @api\n     */\n    Icon.prototype.load = function () {\n        this.iconImage_.load();\n    };\n    /**\n     * @override\n     */\n    Icon.prototype.unlistenImageChange = function (listener) {\n        this.iconImage_.removeEventListener(EventType.CHANGE, listener);\n    };\n    return Icon;\n}(ImageStyle));\nexport default Icon;\n//# sourceMappingURL=Icon.js.map","/**\n * @module ol/CollectionEventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered when an item is added to the collection.\n     * @event module:ol/Collection.CollectionEvent#add\n     * @api\n     */\n    ADD: 'add',\n    /**\n     * Triggered when an item is removed from the collection.\n     * @event module:ol/Collection.CollectionEvent#remove\n     * @api\n     */\n    REMOVE: 'remove'\n};\n//# sourceMappingURL=CollectionEventType.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Collection\n */\nimport AssertionError from './AssertionError.js';\nimport CollectionEventType from './CollectionEventType.js';\nimport BaseObject from './Object.js';\nimport Event from './events/Event.js';\n/**\n * @enum {string}\n * @private\n */\nvar Property = {\n    LENGTH: 'length'\n};\n/**\n * @classdesc\n * Events emitted by {@link module:ol/Collection~Collection} instances are instances of this\n * type.\n */\nvar CollectionEvent = /** @class */ (function (_super) {\n    __extends(CollectionEvent, _super);\n    /**\n     * @param {CollectionEventType} type Type.\n     * @param {*=} opt_element Element.\n     * @param {number=} opt_index The index of the added or removed element.\n     */\n    function CollectionEvent(type, opt_element, opt_index) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The element that is added to or removed from the collection.\n         * @type {*}\n         * @api\n         */\n        _this.element = opt_element;\n        /**\n         * The index of the added or removed element.\n         * @type {number}\n         * @api\n         */\n        _this.index = opt_index;\n        return _this;\n    }\n    return CollectionEvent;\n}(Event));\nexport { CollectionEvent };\n/**\n * @typedef {Object} Options\n * @property {boolean} [unique=false] Disallow the same item from being added to\n * the collection twice.\n */\n/**\n * @classdesc\n * An expanded version of standard JS Array, adding convenience methods for\n * manipulation. Add and remove changes to the Collection trigger a Collection\n * event. Note that this does not cover changes to the objects _within_ the\n * Collection; they trigger events on the appropriate object, not on the\n * Collection as a whole.\n *\n * @fires CollectionEvent\n *\n * @template T\n * @api\n */\nvar Collection = /** @class */ (function (_super) {\n    __extends(Collection, _super);\n    /**\n     * @param {Array<T>=} opt_array Array.\n     * @param {Options=} opt_options Collection options.\n     */\n    function Collection(opt_array, opt_options) {\n        var _this = _super.call(this) || this;\n        var options = opt_options || {};\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.unique_ = !!options.unique;\n        /**\n         * @private\n         * @type {!Array<T>}\n         */\n        _this.array_ = opt_array ? opt_array : [];\n        if (_this.unique_) {\n            for (var i = 0, ii = _this.array_.length; i < ii; ++i) {\n                _this.assertUnique_(_this.array_[i], i);\n            }\n        }\n        _this.updateLength_();\n        return _this;\n    }\n    /**\n     * Remove all elements from the collection.\n     * @api\n     */\n    Collection.prototype.clear = function () {\n        while (this.getLength() > 0) {\n            this.pop();\n        }\n    };\n    /**\n     * Add elements to the collection.  This pushes each item in the provided array\n     * to the end of the collection.\n     * @param {!Array<T>} arr Array.\n     * @return {Collection<T>} This collection.\n     * @api\n     */\n    Collection.prototype.extend = function (arr) {\n        for (var i = 0, ii = arr.length; i < ii; ++i) {\n            this.push(arr[i]);\n        }\n        return this;\n    };\n    /**\n     * Iterate over each element, calling the provided callback.\n     * @param {function(T, number, Array<T>): *} f The function to call\n     *     for every element. This function takes 3 arguments (the element, the\n     *     index and the array). The return value is ignored.\n     * @api\n     */\n    Collection.prototype.forEach = function (f) {\n        var array = this.array_;\n        for (var i = 0, ii = array.length; i < ii; ++i) {\n            f(array[i], i, array);\n        }\n    };\n    /**\n     * Get a reference to the underlying Array object. Warning: if the array\n     * is mutated, no events will be dispatched by the collection, and the\n     * collection's \"length\" property won't be in sync with the actual length\n     * of the array.\n     * @return {!Array<T>} Array.\n     * @api\n     */\n    Collection.prototype.getArray = function () {\n        return this.array_;\n    };\n    /**\n     * Get the element at the provided index.\n     * @param {number} index Index.\n     * @return {T} Element.\n     * @api\n     */\n    Collection.prototype.item = function (index) {\n        return this.array_[index];\n    };\n    /**\n     * Get the length of this collection.\n     * @return {number} The length of the array.\n     * @observable\n     * @api\n     */\n    Collection.prototype.getLength = function () {\n        return this.get(Property.LENGTH);\n    };\n    /**\n     * Insert an element at the provided index.\n     * @param {number} index Index.\n     * @param {T} elem Element.\n     * @api\n     */\n    Collection.prototype.insertAt = function (index, elem) {\n        if (this.unique_) {\n            this.assertUnique_(elem);\n        }\n        this.array_.splice(index, 0, elem);\n        this.updateLength_();\n        this.dispatchEvent(new CollectionEvent(CollectionEventType.ADD, elem, index));\n    };\n    /**\n     * Remove the last element of the collection and return it.\n     * Return `undefined` if the collection is empty.\n     * @return {T|undefined} Element.\n     * @api\n     */\n    Collection.prototype.pop = function () {\n        return this.removeAt(this.getLength() - 1);\n    };\n    /**\n     * Insert the provided element at the end of the collection.\n     * @param {T} elem Element.\n     * @return {number} New length of the collection.\n     * @api\n     */\n    Collection.prototype.push = function (elem) {\n        if (this.unique_) {\n            this.assertUnique_(elem);\n        }\n        var n = this.getLength();\n        this.insertAt(n, elem);\n        return this.getLength();\n    };\n    /**\n     * Remove the first occurrence of an element from the collection.\n     * @param {T} elem Element.\n     * @return {T|undefined} The removed element or undefined if none found.\n     * @api\n     */\n    Collection.prototype.remove = function (elem) {\n        var arr = this.array_;\n        for (var i = 0, ii = arr.length; i < ii; ++i) {\n            if (arr[i] === elem) {\n                return this.removeAt(i);\n            }\n        }\n        return undefined;\n    };\n    /**\n     * Remove the element at the provided index and return it.\n     * Return `undefined` if the collection does not contain this index.\n     * @param {number} index Index.\n     * @return {T|undefined} Value.\n     * @api\n     */\n    Collection.prototype.removeAt = function (index) {\n        var prev = this.array_[index];\n        this.array_.splice(index, 1);\n        this.updateLength_();\n        this.dispatchEvent(new CollectionEvent(CollectionEventType.REMOVE, prev, index));\n        return prev;\n    };\n    /**\n     * Set the element at the provided index.\n     * @param {number} index Index.\n     * @param {T} elem Element.\n     * @api\n     */\n    Collection.prototype.setAt = function (index, elem) {\n        var n = this.getLength();\n        if (index < n) {\n            if (this.unique_) {\n                this.assertUnique_(elem, index);\n            }\n            var prev = this.array_[index];\n            this.array_[index] = elem;\n            this.dispatchEvent(new CollectionEvent(CollectionEventType.REMOVE, prev, index));\n            this.dispatchEvent(new CollectionEvent(CollectionEventType.ADD, elem, index));\n        }\n        else {\n            for (var j = n; j < index; ++j) {\n                this.insertAt(j, undefined);\n            }\n            this.insertAt(index, elem);\n        }\n    };\n    /**\n     * @private\n     */\n    Collection.prototype.updateLength_ = function () {\n        this.set(Property.LENGTH, this.array_.length);\n    };\n    /**\n     * @private\n     * @param {T} elem Element.\n     * @param {number=} opt_except Optional index to ignore.\n     */\n    Collection.prototype.assertUnique_ = function (elem, opt_except) {\n        for (var i = 0, ii = this.array_.length; i < ii; ++i) {\n            if (this.array_[i] === elem && i !== opt_except) {\n                throw new AssertionError(58);\n            }\n        }\n    };\n    return Collection;\n}(BaseObject));\nexport default Collection;\n//# sourceMappingURL=Collection.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/MapEvent\n */\nimport Event from './events/Event.js';\n/**\n * @classdesc\n * Events emitted as map events are instances of this type.\n * See {@link module:ol/PluggableMap~PluggableMap} for which events trigger a map event.\n */\nvar MapEvent = /** @class */ (function (_super) {\n    __extends(MapEvent, _super);\n    /**\n     * @param {string} type Event type.\n     * @param {import(\"./PluggableMap.js\").default} map Map.\n     * @param {?import(\"./PluggableMap.js\").FrameState=} opt_frameState Frame state.\n     */\n    function MapEvent(type, map, opt_frameState) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The map where the event occurred.\n         * @type {import(\"./PluggableMap.js\").default}\n         * @api\n         */\n        _this.map = map;\n        /**\n         * The frame state at the time of the event.\n         * @type {?import(\"./PluggableMap.js\").FrameState}\n         * @api\n         */\n        _this.frameState = opt_frameState !== undefined ? opt_frameState : null;\n        return _this;\n    }\n    return MapEvent;\n}(Event));\nexport default MapEvent;\n//# sourceMappingURL=MapEvent.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/MapBrowserEvent\n */\nimport MapEvent from './MapEvent.js';\n/**\n * @classdesc\n * Events emitted as map browser events are instances of this type.\n * See {@link module:ol/PluggableMap~PluggableMap} for which events trigger a map browser event.\n */\nvar MapBrowserEvent = /** @class */ (function (_super) {\n    __extends(MapBrowserEvent, _super);\n    /**\n     * @param {string} type Event type.\n     * @param {import(\"./PluggableMap.js\").default} map Map.\n     * @param {Event} browserEvent Browser event.\n     * @param {boolean=} opt_dragging Is the map currently being dragged?\n     * @param {?import(\"./PluggableMap.js\").FrameState=} opt_frameState Frame state.\n     */\n    function MapBrowserEvent(type, map, browserEvent, opt_dragging, opt_frameState) {\n        var _this = _super.call(this, type, map, opt_frameState) || this;\n        /**\n         * The original browser event.\n         * @const\n         * @type {Event}\n         * @api\n         */\n        _this.originalEvent = browserEvent;\n        /**\n         * The map pixel relative to the viewport corresponding to the original browser event.\n         * @type {?import(\"./pixel.js\").Pixel}\n         */\n        _this.pixel_ = null;\n        /**\n         * The coordinate in the user projection corresponding to the original browser event.\n         * @type {?import(\"./coordinate.js\").Coordinate}\n         */\n        _this.coordinate_ = null;\n        /**\n         * Indicates if the map is currently being dragged. Only set for\n         * `POINTERDRAG` and `POINTERMOVE` events. Default is `false`.\n         *\n         * @type {boolean}\n         * @api\n         */\n        _this.dragging = opt_dragging !== undefined ? opt_dragging : false;\n        return _this;\n    }\n    Object.defineProperty(MapBrowserEvent.prototype, \"pixel\", {\n        /**\n         * The map pixel relative to the viewport corresponding to the original browser event.\n         * @type {import(\"./pixel.js\").Pixel}\n         * @api\n         */\n        get: function () {\n            if (!this.pixel_) {\n                this.pixel_ = this.map.getEventPixel(this.originalEvent);\n            }\n            return this.pixel_;\n        },\n        set: function (pixel) {\n            this.pixel_ = pixel;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(MapBrowserEvent.prototype, \"coordinate\", {\n        /**\n         * The coordinate corresponding to the original browser event.  This will be in the user\n         * projection if one is set.  Otherwise it will be in the view projection.\n         * @type {import(\"./coordinate.js\").Coordinate}\n         * @api\n         */\n        get: function () {\n            if (!this.coordinate_) {\n                this.coordinate_ = this.map.getCoordinateFromPixel(this.pixel);\n            }\n            return this.coordinate_;\n        },\n        set: function (coordinate) {\n            this.coordinate_ = coordinate;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    /**\n     * Prevents the default browser action.\n     * See https://developer.mozilla.org/en-US/docs/Web/API/event.preventDefault.\n     * @override\n     * @api\n     */\n    MapBrowserEvent.prototype.preventDefault = function () {\n        _super.prototype.preventDefault.call(this);\n        this.originalEvent.preventDefault();\n    };\n    /**\n     * Prevents further propagation of the current event.\n     * See https://developer.mozilla.org/en-US/docs/Web/API/event.stopPropagation.\n     * @override\n     * @api\n     */\n    MapBrowserEvent.prototype.stopPropagation = function () {\n        _super.prototype.stopPropagation.call(this);\n        this.originalEvent.stopPropagation();\n    };\n    return MapBrowserEvent;\n}(MapEvent));\nexport default MapBrowserEvent;\n//# sourceMappingURL=MapBrowserEvent.js.map","/**\n * @module ol/MapBrowserEventType\n */\nimport EventType from './events/EventType.js';\n/**\n * Constants for event names.\n * @enum {string}\n */\nexport default {\n    /**\n     * A true single click with no dragging and no double click. Note that this\n     * event is delayed by 250 ms to ensure that it is not a double click.\n     * @event module:ol/MapBrowserEvent~MapBrowserEvent#singleclick\n     * @api\n     */\n    SINGLECLICK: 'singleclick',\n    /**\n     * A click with no dragging. A double click will fire two of this.\n     * @event module:ol/MapBrowserEvent~MapBrowserEvent#click\n     * @api\n     */\n    CLICK: EventType.CLICK,\n    /**\n     * A true double click, with no dragging.\n     * @event module:ol/MapBrowserEvent~MapBrowserEvent#dblclick\n     * @api\n     */\n    DBLCLICK: EventType.DBLCLICK,\n    /**\n     * Triggered when a pointer is dragged.\n     * @event module:ol/MapBrowserEvent~MapBrowserEvent#pointerdrag\n     * @api\n     */\n    POINTERDRAG: 'pointerdrag',\n    /**\n     * Triggered when a pointer is moved. Note that on touch devices this is\n     * triggered when the map is panned, so is not the same as mousemove.\n     * @event module:ol/MapBrowserEvent~MapBrowserEvent#pointermove\n     * @api\n     */\n    POINTERMOVE: 'pointermove',\n    POINTERDOWN: 'pointerdown',\n    POINTERUP: 'pointerup',\n    POINTEROVER: 'pointerover',\n    POINTEROUT: 'pointerout',\n    POINTERENTER: 'pointerenter',\n    POINTERLEAVE: 'pointerleave',\n    POINTERCANCEL: 'pointercancel'\n};\n//# sourceMappingURL=MapBrowserEventType.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/MapBrowserPointerEvent\n */\nimport MapBrowserEvent from './MapBrowserEvent.js';\nvar MapBrowserPointerEvent = /** @class */ (function (_super) {\n    __extends(MapBrowserPointerEvent, _super);\n    /**\n     * @param {string} type Event type.\n     * @param {import(\"./PluggableMap.js\").default} map Map.\n     * @param {PointerEvent} pointerEvent Pointer event.\n     * @param {boolean=} opt_dragging Is the map currently being dragged?\n     * @param {?import(\"./PluggableMap.js\").FrameState=} opt_frameState Frame state.\n     */\n    function MapBrowserPointerEvent(type, map, pointerEvent, opt_dragging, opt_frameState) {\n        var _this = _super.call(this, type, map, pointerEvent, opt_dragging, opt_frameState) || this;\n        /**\n         * @const\n         * @type {PointerEvent}\n         */\n        _this.pointerEvent = pointerEvent;\n        return _this;\n    }\n    return MapBrowserPointerEvent;\n}(MapBrowserEvent));\nexport default MapBrowserPointerEvent;\n//# sourceMappingURL=MapBrowserPointerEvent.js.map","/**\n * @module ol/pointer/EventType\n */\n/**\n * Constants for event names.\n * @enum {string}\n */\nexport default {\n    POINTERMOVE: 'pointermove',\n    POINTERDOWN: 'pointerdown',\n    POINTERUP: 'pointerup',\n    POINTEROVER: 'pointerover',\n    POINTEROUT: 'pointerout',\n    POINTERENTER: 'pointerenter',\n    POINTERLEAVE: 'pointerleave',\n    POINTERCANCEL: 'pointercancel'\n};\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/MapBrowserEventHandler\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport 'elm-pep';\nimport { DEVICE_PIXEL_RATIO, PASSIVE_EVENT_LISTENERS } from './has.js';\nimport MapBrowserEventType from './MapBrowserEventType.js';\nimport MapBrowserPointerEvent from './MapBrowserPointerEvent.js';\nimport { listen, unlistenByKey } from './events.js';\nimport EventTarget from './events/Target.js';\nimport PointerEventType from './pointer/EventType.js';\nimport EventType from './events/EventType.js';\nvar MapBrowserEventHandler = /** @class */ (function (_super) {\n    __extends(MapBrowserEventHandler, _super);\n    /**\n     * @param {import(\"./PluggableMap.js\").default} map The map with the viewport to listen to events on.\n     * @param {number=} moveTolerance The minimal distance the pointer must travel to trigger a move.\n     */\n    function MapBrowserEventHandler(map, moveTolerance) {\n        var _this = _super.call(this, map) || this;\n        /**\n         * This is the element that we will listen to the real events on.\n         * @type {import(\"./PluggableMap.js\").default}\n         * @private\n         */\n        _this.map_ = map;\n        /**\n         * @type {any}\n         * @private\n         */\n        _this.clickTimeoutId_;\n        /**\n         * @type {boolean}\n         * @private\n         */\n        _this.dragging_ = false;\n        /**\n         * @type {!Array<import(\"./events.js\").EventsKey>}\n         * @private\n         */\n        _this.dragListenerKeys_ = [];\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.moveTolerance_ = moveTolerance ?\n            moveTolerance * DEVICE_PIXEL_RATIO : DEVICE_PIXEL_RATIO;\n        /**\n         * The most recent \"down\" type event (or null if none have occurred).\n         * Set on pointerdown.\n         * @type {PointerEvent}\n         * @private\n         */\n        _this.down_ = null;\n        var element = _this.map_.getViewport();\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.activePointers_ = 0;\n        /**\n         * @type {!Object<number, boolean>}\n         * @private\n         */\n        _this.trackedTouches_ = {};\n        _this.element_ = element;\n        /**\n         * @type {?import(\"./events.js\").EventsKey}\n         * @private\n         */\n        _this.pointerdownListenerKey_ = listen(element, PointerEventType.POINTERDOWN, _this.handlePointerDown_, _this);\n        /**\n         * @type {PointerEvent}\n         * @private\n         */\n        _this.originalPointerMoveEvent_;\n        /**\n         * @type {?import(\"./events.js\").EventsKey}\n         * @private\n         */\n        _this.relayedListenerKey_ = listen(element, PointerEventType.POINTERMOVE, _this.relayEvent_, _this);\n        /**\n         * @private\n         */\n        _this.boundHandleTouchMove_ = _this.handleTouchMove_.bind(_this);\n        _this.element_.addEventListener(EventType.TOUCHMOVE, _this.boundHandleTouchMove_, PASSIVE_EVENT_LISTENERS ? { passive: false } : false);\n        return _this;\n    }\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.emulateClick_ = function (pointerEvent) {\n        var newEvent = new MapBrowserPointerEvent(MapBrowserEventType.CLICK, this.map_, pointerEvent);\n        this.dispatchEvent(newEvent);\n        if (this.clickTimeoutId_ !== undefined) {\n            // double-click\n            clearTimeout(this.clickTimeoutId_);\n            this.clickTimeoutId_ = undefined;\n            newEvent = new MapBrowserPointerEvent(MapBrowserEventType.DBLCLICK, this.map_, pointerEvent);\n            this.dispatchEvent(newEvent);\n        }\n        else {\n            // click\n            this.clickTimeoutId_ = setTimeout(function () {\n                this.clickTimeoutId_ = undefined;\n                var newEvent = new MapBrowserPointerEvent(MapBrowserEventType.SINGLECLICK, this.map_, pointerEvent);\n                this.dispatchEvent(newEvent);\n            }.bind(this), 250);\n        }\n    };\n    /**\n     * Keeps track on how many pointers are currently active.\n     *\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.updateActivePointers_ = function (pointerEvent) {\n        var event = pointerEvent;\n        if (event.type == MapBrowserEventType.POINTERUP ||\n            event.type == MapBrowserEventType.POINTERCANCEL) {\n            delete this.trackedTouches_[event.pointerId];\n        }\n        else if (event.type == MapBrowserEventType.POINTERDOWN) {\n            this.trackedTouches_[event.pointerId] = true;\n        }\n        this.activePointers_ = Object.keys(this.trackedTouches_).length;\n    };\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.handlePointerUp_ = function (pointerEvent) {\n        this.updateActivePointers_(pointerEvent);\n        var newEvent = new MapBrowserPointerEvent(MapBrowserEventType.POINTERUP, this.map_, pointerEvent);\n        this.dispatchEvent(newEvent);\n        // We emulate click events on left mouse button click, touch contact, and pen\n        // contact. isMouseActionButton returns true in these cases (evt.button is set\n        // to 0).\n        // See http://www.w3.org/TR/pointerevents/#button-states\n        // We only fire click, singleclick, and doubleclick if nobody has called\n        // event.stopPropagation() or event.preventDefault().\n        if (!newEvent.propagationStopped && !this.dragging_ && this.isMouseActionButton_(pointerEvent)) {\n            this.emulateClick_(this.down_);\n        }\n        if (this.activePointers_ === 0) {\n            this.dragListenerKeys_.forEach(unlistenByKey);\n            this.dragListenerKeys_.length = 0;\n            this.dragging_ = false;\n            this.down_ = null;\n        }\n    };\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @return {boolean} If the left mouse button was pressed.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.isMouseActionButton_ = function (pointerEvent) {\n        return pointerEvent.button === 0;\n    };\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.handlePointerDown_ = function (pointerEvent) {\n        this.updateActivePointers_(pointerEvent);\n        var newEvent = new MapBrowserPointerEvent(MapBrowserEventType.POINTERDOWN, this.map_, pointerEvent);\n        this.dispatchEvent(newEvent);\n        this.down_ = pointerEvent;\n        if (this.dragListenerKeys_.length === 0) {\n            this.dragListenerKeys_.push(listen(document, MapBrowserEventType.POINTERMOVE, this.handlePointerMove_, this), listen(document, MapBrowserEventType.POINTERUP, this.handlePointerUp_, this), \n            /* Note that the listener for `pointercancel is set up on\n             * `pointerEventHandler_` and not `documentPointerEventHandler_` like\n             * the `pointerup` and `pointermove` listeners.\n             *\n             * The reason for this is the following: `TouchSource.vacuumTouches_()`\n             * issues `pointercancel` events, when there was no `touchend` for a\n             * `touchstart`. Now, let's say a first `touchstart` is registered on\n             * `pointerEventHandler_`. The `documentPointerEventHandler_` is set up.\n             * But `documentPointerEventHandler_` doesn't know about the first\n             * `touchstart`. If there is no `touchend` for the `touchstart`, we can\n             * only receive a `touchcancel` from `pointerEventHandler_`, because it is\n             * only registered there.\n             */\n            listen(this.element_, MapBrowserEventType.POINTERCANCEL, this.handlePointerUp_, this));\n        }\n    };\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.handlePointerMove_ = function (pointerEvent) {\n        // Between pointerdown and pointerup, pointermove events are triggered.\n        // To avoid a 'false' touchmove event to be dispatched, we test if the pointer\n        // moved a significant distance.\n        if (this.isMoving_(pointerEvent)) {\n            this.dragging_ = true;\n            var newEvent = new MapBrowserPointerEvent(MapBrowserEventType.POINTERDRAG, this.map_, pointerEvent, this.dragging_);\n            this.dispatchEvent(newEvent);\n        }\n    };\n    /**\n     * Wrap and relay a pointer event.  Note that this requires that the type\n     * string for the MapBrowserPointerEvent matches the PointerEvent type.\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.relayEvent_ = function (pointerEvent) {\n        this.originalPointerMoveEvent_ = pointerEvent;\n        var dragging = !!(this.down_ && this.isMoving_(pointerEvent));\n        this.dispatchEvent(new MapBrowserPointerEvent(pointerEvent.type, this.map_, pointerEvent, dragging));\n    };\n    /**\n     * Flexible handling of a `touch-action: none` css equivalent: because calling\n     * `preventDefault()` on a `pointermove` event does not stop native page scrolling\n     * and zooming, we also listen for `touchmove` and call `preventDefault()` on it\n     * when an interaction (currently `DragPan` handles the event.\n     * @param {TouchEvent} event Event.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.handleTouchMove_ = function (event) {\n        // Due to https://github.com/mpizenberg/elm-pep/issues/2, `this.originalPointerMoveEvent_`\n        // may not be initialized yet when we get here on a platform without native pointer events.\n        if (!this.originalPointerMoveEvent_ || this.originalPointerMoveEvent_.defaultPrevented) {\n            event.preventDefault();\n        }\n    };\n    /**\n     * @param {PointerEvent} pointerEvent Pointer\n     * event.\n     * @return {boolean} Is moving.\n     * @private\n     */\n    MapBrowserEventHandler.prototype.isMoving_ = function (pointerEvent) {\n        return this.dragging_ ||\n            Math.abs(pointerEvent.clientX - this.down_.clientX) > this.moveTolerance_ ||\n            Math.abs(pointerEvent.clientY - this.down_.clientY) > this.moveTolerance_;\n    };\n    /**\n     * @inheritDoc\n     */\n    MapBrowserEventHandler.prototype.disposeInternal = function () {\n        if (this.relayedListenerKey_) {\n            unlistenByKey(this.relayedListenerKey_);\n            this.relayedListenerKey_ = null;\n        }\n        this.element_.removeEventListener(EventType.TOUCHMOVE, this.boundHandleTouchMove_);\n        if (this.pointerdownListenerKey_) {\n            unlistenByKey(this.pointerdownListenerKey_);\n            this.pointerdownListenerKey_ = null;\n        }\n        this.dragListenerKeys_.forEach(unlistenByKey);\n        this.dragListenerKeys_.length = 0;\n        this.element_ = null;\n        _super.prototype.disposeInternal.call(this);\n    };\n    return MapBrowserEventHandler;\n}(EventTarget));\nexport default MapBrowserEventHandler;\n//# sourceMappingURL=MapBrowserEventHandler.js.map","/**\n * @module ol/MapProperty\n */\n/**\n * @enum {string}\n */\nexport default {\n    LAYERGROUP: 'layergroup',\n    SIZE: 'size',\n    TARGET: 'target',\n    VIEW: 'view'\n};\n//# sourceMappingURL=MapProperty.js.map","/**\n * @module ol/render/EventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered before a layer is rendered.\n     * @event module:ol/render/Event~RenderEvent#prerender\n     * @api\n     */\n    PRERENDER: 'prerender',\n    /**\n     * Triggered after a layer is rendered.\n     * @event module:ol/render/Event~RenderEvent#postrender\n     * @api\n     */\n    POSTRENDER: 'postrender',\n    /**\n     * Triggered before layers are rendered.\n     * The event object will not have a `context` set.\n     * @event module:ol/render/Event~RenderEvent#precompose\n     * @api\n     */\n    PRECOMPOSE: 'precompose',\n    /**\n     * Triggered after all layers are rendered.\n     * The event object will not have a `context` set.\n     * @event module:ol/render/Event~RenderEvent#postcompose\n     * @api\n     */\n    POSTCOMPOSE: 'postcompose',\n    /**\n     * Triggered when rendering is complete, i.e. all sources and tiles have\n     * finished loading for the current viewport, and all tiles are faded in.\n     * The event object will not have a `context` set.\n     * @event module:ol/render/Event~RenderEvent#rendercomplete\n     * @api\n     */\n    RENDERCOMPLETE: 'rendercomplete'\n};\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/TileState\n */\n/**\n * @enum {number}\n */\nexport default {\n    IDLE: 0,\n    LOADING: 1,\n    LOADED: 2,\n    /**\n     * Indicates that tile loading failed\n     * @type {number}\n     */\n    ERROR: 3,\n    EMPTY: 4\n};\n//# sourceMappingURL=TileState.js.map","/**\n * @module ol/structs/PriorityQueue\n */\nimport { assert } from '../asserts.js';\nimport { clear } from '../obj.js';\n/**\n * @type {number}\n */\nexport var DROP = Infinity;\n/**\n * @classdesc\n * Priority queue.\n *\n * The implementation is inspired from the Closure Library's Heap class and\n * Python's heapq module.\n *\n * See http://closure-library.googlecode.com/svn/docs/closure_goog_structs_heap.js.source.html\n * and http://hg.python.org/cpython/file/2.7/Lib/heapq.py.\n *\n * @template T\n */\nvar PriorityQueue = /** @class */ (function () {\n    /**\n     * @param {function(T): number} priorityFunction Priority function.\n     * @param {function(T): string} keyFunction Key function.\n     */\n    function PriorityQueue(priorityFunction, keyFunction) {\n        /**\n         * @type {function(T): number}\n         * @private\n         */\n        this.priorityFunction_ = priorityFunction;\n        /**\n         * @type {function(T): string}\n         * @private\n         */\n        this.keyFunction_ = keyFunction;\n        /**\n         * @type {Array<T>}\n         * @private\n         */\n        this.elements_ = [];\n        /**\n         * @type {Array<number>}\n         * @private\n         */\n        this.priorities_ = [];\n        /**\n         * @type {!Object<string, boolean>}\n         * @private\n         */\n        this.queuedElements_ = {};\n    }\n    /**\n     * FIXME empty description for jsdoc\n     */\n    PriorityQueue.prototype.clear = function () {\n        this.elements_.length = 0;\n        this.priorities_.length = 0;\n        clear(this.queuedElements_);\n    };\n    /**\n     * Remove and return the highest-priority element. O(log N).\n     * @return {T} Element.\n     */\n    PriorityQueue.prototype.dequeue = function () {\n        var elements = this.elements_;\n        var priorities = this.priorities_;\n        var element = elements[0];\n        if (elements.length == 1) {\n            elements.length = 0;\n            priorities.length = 0;\n        }\n        else {\n            elements[0] = elements.pop();\n            priorities[0] = priorities.pop();\n            this.siftUp_(0);\n        }\n        var elementKey = this.keyFunction_(element);\n        delete this.queuedElements_[elementKey];\n        return element;\n    };\n    /**\n     * Enqueue an element. O(log N).\n     * @param {T} element Element.\n     * @return {boolean} The element was added to the queue.\n     */\n    PriorityQueue.prototype.enqueue = function (element) {\n        assert(!(this.keyFunction_(element) in this.queuedElements_), 31); // Tried to enqueue an `element` that was already added to the queue\n        var priority = this.priorityFunction_(element);\n        if (priority != DROP) {\n            this.elements_.push(element);\n            this.priorities_.push(priority);\n            this.queuedElements_[this.keyFunction_(element)] = true;\n            this.siftDown_(0, this.elements_.length - 1);\n            return true;\n        }\n        return false;\n    };\n    /**\n     * @return {number} Count.\n     */\n    PriorityQueue.prototype.getCount = function () {\n        return this.elements_.length;\n    };\n    /**\n     * Gets the index of the left child of the node at the given index.\n     * @param {number} index The index of the node to get the left child for.\n     * @return {number} The index of the left child.\n     * @private\n     */\n    PriorityQueue.prototype.getLeftChildIndex_ = function (index) {\n        return index * 2 + 1;\n    };\n    /**\n     * Gets the index of the right child of the node at the given index.\n     * @param {number} index The index of the node to get the right child for.\n     * @return {number} The index of the right child.\n     * @private\n     */\n    PriorityQueue.prototype.getRightChildIndex_ = function (index) {\n        return index * 2 + 2;\n    };\n    /**\n     * Gets the index of the parent of the node at the given index.\n     * @param {number} index The index of the node to get the parent for.\n     * @return {number} The index of the parent.\n     * @private\n     */\n    PriorityQueue.prototype.getParentIndex_ = function (index) {\n        return (index - 1) >> 1;\n    };\n    /**\n     * Make this a heap. O(N).\n     * @private\n     */\n    PriorityQueue.prototype.heapify_ = function () {\n        var i;\n        for (i = (this.elements_.length >> 1) - 1; i >= 0; i--) {\n            this.siftUp_(i);\n        }\n    };\n    /**\n     * @return {boolean} Is empty.\n     */\n    PriorityQueue.prototype.isEmpty = function () {\n        return this.elements_.length === 0;\n    };\n    /**\n     * @param {string} key Key.\n     * @return {boolean} Is key queued.\n     */\n    PriorityQueue.prototype.isKeyQueued = function (key) {\n        return key in this.queuedElements_;\n    };\n    /**\n     * @param {T} element Element.\n     * @return {boolean} Is queued.\n     */\n    PriorityQueue.prototype.isQueued = function (element) {\n        return this.isKeyQueued(this.keyFunction_(element));\n    };\n    /**\n     * @param {number} index The index of the node to move down.\n     * @private\n     */\n    PriorityQueue.prototype.siftUp_ = function (index) {\n        var elements = this.elements_;\n        var priorities = this.priorities_;\n        var count = elements.length;\n        var element = elements[index];\n        var priority = priorities[index];\n        var startIndex = index;\n        while (index < (count >> 1)) {\n            var lIndex = this.getLeftChildIndex_(index);\n            var rIndex = this.getRightChildIndex_(index);\n            var smallerChildIndex = rIndex < count &&\n                priorities[rIndex] < priorities[lIndex] ?\n                rIndex : lIndex;\n            elements[index] = elements[smallerChildIndex];\n            priorities[index] = priorities[smallerChildIndex];\n            index = smallerChildIndex;\n        }\n        elements[index] = element;\n        priorities[index] = priority;\n        this.siftDown_(startIndex, index);\n    };\n    /**\n     * @param {number} startIndex The index of the root.\n     * @param {number} index The index of the node to move up.\n     * @private\n     */\n    PriorityQueue.prototype.siftDown_ = function (startIndex, index) {\n        var elements = this.elements_;\n        var priorities = this.priorities_;\n        var element = elements[index];\n        var priority = priorities[index];\n        while (index > startIndex) {\n            var parentIndex = this.getParentIndex_(index);\n            if (priorities[parentIndex] > priority) {\n                elements[index] = elements[parentIndex];\n                priorities[index] = priorities[parentIndex];\n                index = parentIndex;\n            }\n            else {\n                break;\n            }\n        }\n        elements[index] = element;\n        priorities[index] = priority;\n    };\n    /**\n     * FIXME empty description for jsdoc\n     */\n    PriorityQueue.prototype.reprioritize = function () {\n        var priorityFunction = this.priorityFunction_;\n        var elements = this.elements_;\n        var priorities = this.priorities_;\n        var index = 0;\n        var n = elements.length;\n        var element, i, priority;\n        for (i = 0; i < n; ++i) {\n            element = elements[i];\n            priority = priorityFunction(element);\n            if (priority == DROP) {\n                delete this.queuedElements_[this.keyFunction_(element)];\n            }\n            else {\n                priorities[index] = priority;\n                elements[index++] = element;\n            }\n        }\n        elements.length = index;\n        priorities.length = index;\n        this.heapify_();\n    };\n    return PriorityQueue;\n}());\nexport default PriorityQueue;\n//# sourceMappingURL=PriorityQueue.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/TileQueue\n */\nimport TileState from './TileState.js';\nimport EventType from './events/EventType.js';\nimport PriorityQueue, { DROP } from './structs/PriorityQueue.js';\n/**\n * @typedef {function(import(\"./Tile.js\").default, string, import(\"./coordinate.js\").Coordinate, number): number} PriorityFunction\n */\nvar TileQueue = /** @class */ (function (_super) {\n    __extends(TileQueue, _super);\n    /**\n     * @param {PriorityFunction} tilePriorityFunction Tile priority function.\n     * @param {function(): ?} tileChangeCallback Function called on each tile change event.\n     */\n    function TileQueue(tilePriorityFunction, tileChangeCallback) {\n        var _this = _super.call(this, \n        /**\n         * @param {Array} element Element.\n         * @return {number} Priority.\n         */\n        function (element) {\n            return tilePriorityFunction.apply(null, element);\n        }, \n        /**\n         * @param {Array} element Element.\n         * @return {string} Key.\n         */\n        function (element) {\n            return ( /** @type {import(\"./Tile.js\").default} */(element[0]).getKey());\n        }) || this;\n        /** @private */\n        _this.boundHandleTileChange_ = _this.handleTileChange.bind(_this);\n        /**\n         * @private\n         * @type {function(): ?}\n         */\n        _this.tileChangeCallback_ = tileChangeCallback;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.tilesLoading_ = 0;\n        /**\n         * @private\n         * @type {!Object<string,boolean>}\n         */\n        _this.tilesLoadingKeys_ = {};\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    TileQueue.prototype.enqueue = function (element) {\n        var added = _super.prototype.enqueue.call(this, element);\n        if (added) {\n            var tile = element[0];\n            tile.addEventListener(EventType.CHANGE, this.boundHandleTileChange_);\n        }\n        return added;\n    };\n    /**\n     * @return {number} Number of tiles loading.\n     */\n    TileQueue.prototype.getTilesLoading = function () {\n        return this.tilesLoading_;\n    };\n    /**\n     * @param {import(\"./events/Event.js\").default} event Event.\n     * @protected\n     */\n    TileQueue.prototype.handleTileChange = function (event) {\n        var tile = /** @type {import(\"./Tile.js\").default} */ (event.target);\n        var state = tile.getState();\n        if (tile.hifi && state === TileState.LOADED || state === TileState.ERROR || state === TileState.EMPTY) {\n            tile.removeEventListener(EventType.CHANGE, this.boundHandleTileChange_);\n            var tileKey = tile.getKey();\n            if (tileKey in this.tilesLoadingKeys_) {\n                delete this.tilesLoadingKeys_[tileKey];\n                --this.tilesLoading_;\n            }\n            this.tileChangeCallback_();\n        }\n    };\n    /**\n     * @param {number} maxTotalLoading Maximum number tiles to load simultaneously.\n     * @param {number} maxNewLoads Maximum number of new tiles to load.\n     */\n    TileQueue.prototype.loadMoreTiles = function (maxTotalLoading, maxNewLoads) {\n        var newLoads = 0;\n        var state, tile, tileKey;\n        while (this.tilesLoading_ < maxTotalLoading && newLoads < maxNewLoads &&\n            this.getCount() > 0) {\n            tile = /** @type {import(\"./Tile.js\").default} */ (this.dequeue()[0]);\n            tileKey = tile.getKey();\n            state = tile.getState();\n            if (state === TileState.IDLE && !(tileKey in this.tilesLoadingKeys_)) {\n                this.tilesLoadingKeys_[tileKey] = true;\n                ++this.tilesLoading_;\n                ++newLoads;\n                tile.load();\n            }\n        }\n    };\n    return TileQueue;\n}(PriorityQueue));\nexport default TileQueue;\n/**\n * @param {import('./PluggableMap.js').FrameState} frameState Frame state.\n * @param {import(\"./Tile.js\").default} tile Tile.\n * @param {string} tileSourceKey Tile source key.\n * @param {import(\"./coordinate.js\").Coordinate} tileCenter Tile center.\n * @param {number} tileResolution Tile resolution.\n * @return {number} Tile priority.\n */\nexport function getTilePriority(frameState, tile, tileSourceKey, tileCenter, tileResolution) {\n    // Filter out tiles at higher zoom levels than the current zoom level, or that\n    // are outside the visible extent.\n    if (!frameState || !(tileSourceKey in frameState.wantedTiles)) {\n        return DROP;\n    }\n    if (!frameState.wantedTiles[tileSourceKey][tile.getKey()]) {\n        return DROP;\n    }\n    // Prioritize the highest zoom level tiles closest to the focus.\n    // Tiles at higher zoom levels are prioritized using Math.log(tileResolution).\n    // Within a zoom level, tiles are prioritized by the distance in pixels between\n    // the center of the tile and the center of the viewport.  The factor of 65536\n    // means that the prioritization should behave as desired for tiles up to\n    // 65536 * Math.log(2) = 45426 pixels from the focus.\n    var center = frameState.viewState.center;\n    var deltaX = tileCenter[0] - center[0];\n    var deltaY = tileCenter[1] - center[1];\n    return 65536 * Math.log(tileResolution) +\n        Math.sqrt(deltaX * deltaX + deltaY * deltaY) / tileResolution;\n}\n//# sourceMappingURL=TileQueue.js.map","/**\n * @module ol/centerconstraint\n */\nimport { clamp } from './math.js';\n/**\n * @typedef {function((import(\"./coordinate.js\").Coordinate|undefined), number, import(\"./size.js\").Size, boolean=): (import(\"./coordinate.js\").Coordinate|undefined)} Type\n */\n/**\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {boolean} onlyCenter If true, the constraint will only apply to the view center.\n * @param {boolean} smooth If true, the view will be able to go slightly out of the given extent\n * (only during interaction and animation).\n * @return {Type} The constraint.\n */\nexport function createExtent(extent, onlyCenter, smooth) {\n    return (\n    /**\n     * @param {import(\"./coordinate.js\").Coordinate|undefined} center Center.\n     * @param {number} resolution Resolution.\n     * @param {import(\"./size.js\").Size} size Viewport size; unused if `onlyCenter` was specified.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} Center.\n     */\n    function (center, resolution, size, opt_isMoving) {\n        if (center) {\n            var viewWidth = onlyCenter ? 0 : size[0] * resolution;\n            var viewHeight = onlyCenter ? 0 : size[1] * resolution;\n            var minX = extent[0] + viewWidth / 2;\n            var maxX = extent[2] - viewWidth / 2;\n            var minY = extent[1] + viewHeight / 2;\n            var maxY = extent[3] - viewHeight / 2;\n            // note: when zooming out of bounds, min and max values for x and y may\n            // end up inverted (min > max); this has to be accounted for\n            if (minX > maxX) {\n                minX = (maxX + minX) / 2;\n                maxX = minX;\n            }\n            if (minY > maxY) {\n                minY = (maxY + minY) / 2;\n                maxY = minY;\n            }\n            var x = clamp(center[0], minX, maxX);\n            var y = clamp(center[1], minY, maxY);\n            var ratio = 30 * resolution;\n            // during an interaction, allow some overscroll\n            if (opt_isMoving && smooth) {\n                x += -ratio * Math.log(1 + Math.max(0, minX - center[0]) / ratio) +\n                    ratio * Math.log(1 + Math.max(0, center[0] - maxX) / ratio);\n                y += -ratio * Math.log(1 + Math.max(0, minY - center[1]) / ratio) +\n                    ratio * Math.log(1 + Math.max(0, center[1] - maxY) / ratio);\n            }\n            return [x, y];\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n/**\n * @param {import(\"./coordinate.js\").Coordinate=} center Center.\n * @return {import(\"./coordinate.js\").Coordinate|undefined} Center.\n */\nexport function none(center) {\n    return center;\n}\n//# sourceMappingURL=centerconstraint.js.map","/**\n * @module ol/resolutionconstraint\n */\nimport { linearFindNearest } from './array.js';\nimport { getHeight, getWidth } from './extent.js';\nimport { clamp } from './math.js';\n/**\n * @typedef {function((number|undefined), number, import(\"./size.js\").Size, boolean=): (number|undefined)} Type\n */\n/**\n * Returns a modified resolution taking into account the viewport size and maximum\n * allowed extent.\n * @param {number} resolution Resolution\n * @param {import(\"./extent.js\").Extent=} maxExtent Maximum allowed extent.\n * @param {import(\"./size.js\").Size} viewportSize Viewport size.\n * @param {boolean} showFullExtent Whether to show the full extent.\n * @return {number} Capped resolution.\n */\nfunction getViewportClampedResolution(resolution, maxExtent, viewportSize, showFullExtent) {\n    var xResolution = getWidth(maxExtent) / viewportSize[0];\n    var yResolution = getHeight(maxExtent) / viewportSize[1];\n    if (showFullExtent) {\n        return Math.min(resolution, Math.max(xResolution, yResolution));\n    }\n    return Math.min(resolution, Math.min(xResolution, yResolution));\n}\n/**\n * Returns a modified resolution to be between maxResolution and minResolution while\n * still allowing the value to be slightly out of bounds.\n * Note: the computation is based on the logarithm function (ln):\n *  - at 1, ln(x) is 0\n *  - above 1, ln(x) keeps increasing but at a much slower pace than x\n * The final result is clamped to prevent getting too far away from bounds.\n * @param {number} resolution Resolution.\n * @param {number} maxResolution Max resolution.\n * @param {number} minResolution Min resolution.\n * @return {number} Smoothed resolution.\n */\nfunction getSmoothClampedResolution(resolution, maxResolution, minResolution) {\n    var result = Math.min(resolution, maxResolution);\n    var ratio = 50;\n    result *= Math.log(1 + ratio * Math.max(0, resolution / maxResolution - 1)) / ratio + 1;\n    if (minResolution) {\n        result = Math.max(result, minResolution);\n        result /= Math.log(1 + ratio * Math.max(0, minResolution / resolution - 1)) / ratio + 1;\n    }\n    return clamp(result, minResolution / 2, maxResolution * 2);\n}\n/**\n * @param {Array<number>} resolutions Resolutions.\n * @param {boolean=} opt_smooth If true, the view will be able to slightly exceed resolution limits. Default: true.\n * @param {import(\"./extent.js\").Extent=} opt_maxExtent Maximum allowed extent.\n * @param {boolean=} opt_showFullExtent If true, allows us to show the full extent. Default: false.\n * @return {Type} Zoom function.\n */\nexport function createSnapToResolutions(resolutions, opt_smooth, opt_maxExtent, opt_showFullExtent) {\n    return (\n    /**\n     * @param {number|undefined} resolution Resolution.\n     * @param {number} direction Direction.\n     * @param {import(\"./size.js\").Size} size Viewport size.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {number|undefined} Resolution.\n     */\n    function (resolution, direction, size, opt_isMoving) {\n        if (resolution !== undefined) {\n            var maxResolution = resolutions[0];\n            var minResolution = resolutions[resolutions.length - 1];\n            var cappedMaxRes = opt_maxExtent ?\n                getViewportClampedResolution(maxResolution, opt_maxExtent, size, opt_showFullExtent) :\n                maxResolution;\n            // during interacting or animating, allow intermediary values\n            if (opt_isMoving) {\n                var smooth = opt_smooth !== undefined ? opt_smooth : true;\n                if (!smooth) {\n                    return clamp(resolution, minResolution, cappedMaxRes);\n                }\n                return getSmoothClampedResolution(resolution, cappedMaxRes, minResolution);\n            }\n            var capped = Math.min(cappedMaxRes, resolution);\n            var z = Math.floor(linearFindNearest(resolutions, capped, direction));\n            if (resolutions[z] > cappedMaxRes && z < resolutions.length - 1) {\n                return resolutions[z + 1];\n            }\n            return resolutions[z];\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n/**\n * @param {number} power Power.\n * @param {number} maxResolution Maximum resolution.\n * @param {number=} opt_minResolution Minimum resolution.\n * @param {boolean=} opt_smooth If true, the view will be able to slightly exceed resolution limits. Default: true.\n * @param {import(\"./extent.js\").Extent=} opt_maxExtent Maximum allowed extent.\n * @param {boolean=} opt_showFullExtent If true, allows us to show the full extent. Default: false.\n * @return {Type} Zoom function.\n */\nexport function createSnapToPower(power, maxResolution, opt_minResolution, opt_smooth, opt_maxExtent, opt_showFullExtent) {\n    return (\n    /**\n     * @param {number|undefined} resolution Resolution.\n     * @param {number} direction Direction.\n     * @param {import(\"./size.js\").Size} size Viewport size.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {number|undefined} Resolution.\n     */\n    function (resolution, direction, size, opt_isMoving) {\n        if (resolution !== undefined) {\n            var cappedMaxRes = opt_maxExtent ?\n                getViewportClampedResolution(maxResolution, opt_maxExtent, size, opt_showFullExtent) :\n                maxResolution;\n            var minResolution = opt_minResolution !== undefined ? opt_minResolution : 0;\n            // during interacting or animating, allow intermediary values\n            if (opt_isMoving) {\n                var smooth = opt_smooth !== undefined ? opt_smooth : true;\n                if (!smooth) {\n                    return clamp(resolution, minResolution, cappedMaxRes);\n                }\n                return getSmoothClampedResolution(resolution, cappedMaxRes, minResolution);\n            }\n            var tolerance = 1e-9;\n            var minZoomLevel = Math.ceil(Math.log(maxResolution / cappedMaxRes) / Math.log(power) - tolerance);\n            var offset = -direction * (0.5 - tolerance) + 0.5;\n            var capped = Math.min(cappedMaxRes, resolution);\n            var cappedZoomLevel = Math.floor(Math.log(maxResolution / capped) / Math.log(power) + offset);\n            var zoomLevel = Math.max(minZoomLevel, cappedZoomLevel);\n            var newResolution = maxResolution / Math.pow(power, zoomLevel);\n            return clamp(newResolution, minResolution, cappedMaxRes);\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n/**\n * @param {number} maxResolution Max resolution.\n * @param {number} minResolution Min resolution.\n * @param {boolean=} opt_smooth If true, the view will be able to slightly exceed resolution limits. Default: true.\n * @param {import(\"./extent.js\").Extent=} opt_maxExtent Maximum allowed extent.\n * @param {boolean=} opt_showFullExtent If true, allows us to show the full extent. Default: false.\n * @return {Type} Zoom function.\n */\nexport function createMinMaxResolution(maxResolution, minResolution, opt_smooth, opt_maxExtent, opt_showFullExtent) {\n    return (\n    /**\n     * @param {number|undefined} resolution Resolution.\n     * @param {number} direction Direction.\n     * @param {import(\"./size.js\").Size} size Viewport size.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {number|undefined} Resolution.\n     */\n    function (resolution, direction, size, opt_isMoving) {\n        if (resolution !== undefined) {\n            var cappedMaxRes = opt_maxExtent ?\n                getViewportClampedResolution(maxResolution, opt_maxExtent, size, opt_showFullExtent) :\n                maxResolution;\n            var smooth = opt_smooth !== undefined ? opt_smooth : true;\n            if (!smooth || !opt_isMoving) {\n                return clamp(resolution, minResolution, cappedMaxRes);\n            }\n            return getSmoothClampedResolution(resolution, cappedMaxRes, minResolution);\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n//# sourceMappingURL=resolutionconstraint.js.map","/**\n * @module ol/rotationconstraint\n */\nimport { toRadians } from './math.js';\n/**\n * @typedef {function((number|undefined), boolean=): (number|undefined)} Type\n */\n/**\n * @param {number|undefined} rotation Rotation.\n * @return {number|undefined} Rotation.\n */\nexport function disable(rotation) {\n    if (rotation !== undefined) {\n        return 0;\n    }\n    else {\n        return undefined;\n    }\n}\n/**\n * @param {number|undefined} rotation Rotation.\n * @return {number|undefined} Rotation.\n */\nexport function none(rotation) {\n    if (rotation !== undefined) {\n        return rotation;\n    }\n    else {\n        return undefined;\n    }\n}\n/**\n * @param {number} n N.\n * @return {Type} Rotation constraint.\n */\nexport function createSnapToN(n) {\n    var theta = 2 * Math.PI / n;\n    return (\n    /**\n     * @param {number|undefined} rotation Rotation.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {number|undefined} Rotation.\n     */\n    function (rotation, opt_isMoving) {\n        if (opt_isMoving) {\n            return rotation;\n        }\n        if (rotation !== undefined) {\n            rotation = Math.floor(rotation / theta + 0.5) * theta;\n            return rotation;\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n/**\n * @param {number=} opt_tolerance Tolerance.\n * @return {Type} Rotation constraint.\n */\nexport function createSnapToZero(opt_tolerance) {\n    var tolerance = opt_tolerance || toRadians(5);\n    return (\n    /**\n     * @param {number|undefined} rotation Rotation.\n     * @param {boolean=} opt_isMoving True if an interaction or animation is in progress.\n     * @return {number|undefined} Rotation.\n     */\n    function (rotation, opt_isMoving) {\n        if (opt_isMoving) {\n            return rotation;\n        }\n        if (rotation !== undefined) {\n            if (Math.abs(rotation) <= tolerance) {\n                return 0;\n            }\n            else {\n                return rotation;\n            }\n        }\n        else {\n            return undefined;\n        }\n    });\n}\n//# sourceMappingURL=rotationconstraint.js.map","/**\n * @module ol/ViewHint\n */\n/**\n * @enum {number}\n */\nexport default {\n    ANIMATING: 0,\n    INTERACTING: 1\n};\n//# sourceMappingURL=ViewHint.js.map","/**\n * @module ol/ViewProperty\n */\n/**\n * @enum {string}\n */\nexport default {\n    CENTER: 'center',\n    RESOLUTION: 'resolution',\n    ROTATION: 'rotation'\n};\n//# sourceMappingURL=ViewProperty.js.map","/**\n * @module ol/coordinate\n */\nimport { modulo } from './math.js';\nimport { padNumber } from './string.js';\nimport { getWidth } from './extent.js';\n/**\n * An array of numbers representing an xy coordinate. Example: `[16, 48]`.\n * @typedef {Array<number>} Coordinate\n * @api\n */\n/**\n * A function that takes a {@link module:ol/coordinate~Coordinate} and\n * transforms it into a `{string}`.\n *\n * @typedef {function((Coordinate|undefined)): string} CoordinateFormat\n * @api\n */\n/**\n * Add `delta` to `coordinate`. `coordinate` is modified in place and returned\n * by the function.\n *\n * Example:\n *\n *     import {add} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     add(coord, [-2, 4]);\n *     // coord is now [5.85, 51.983333]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {Coordinate} delta Delta.\n * @return {Coordinate} The input coordinate adjusted by\n * the given delta.\n * @api\n */\nexport function add(coordinate, delta) {\n    coordinate[0] += +delta[0];\n    coordinate[1] += +delta[1];\n    return coordinate;\n}\n/**\n * Calculates the point closest to the passed coordinate on the passed circle.\n *\n * @param {Coordinate} coordinate The coordinate.\n * @param {import(\"./geom/Circle.js\").default} circle The circle.\n * @return {Coordinate} Closest point on the circumference.\n */\nexport function closestOnCircle(coordinate, circle) {\n    var r = circle.getRadius();\n    var center = circle.getCenter();\n    var x0 = center[0];\n    var y0 = center[1];\n    var x1 = coordinate[0];\n    var y1 = coordinate[1];\n    var dx = x1 - x0;\n    var dy = y1 - y0;\n    if (dx === 0 && dy === 0) {\n        dx = 1;\n    }\n    var d = Math.sqrt(dx * dx + dy * dy);\n    var x = x0 + r * dx / d;\n    var y = y0 + r * dy / d;\n    return [x, y];\n}\n/**\n * Calculates the point closest to the passed coordinate on the passed segment.\n * This is the foot of the perpendicular of the coordinate to the segment when\n * the foot is on the segment, or the closest segment coordinate when the foot\n * is outside the segment.\n *\n * @param {Coordinate} coordinate The coordinate.\n * @param {Array<Coordinate>} segment The two coordinates\n * of the segment.\n * @return {Coordinate} The foot of the perpendicular of\n * the coordinate to the segment.\n */\nexport function closestOnSegment(coordinate, segment) {\n    var x0 = coordinate[0];\n    var y0 = coordinate[1];\n    var start = segment[0];\n    var end = segment[1];\n    var x1 = start[0];\n    var y1 = start[1];\n    var x2 = end[0];\n    var y2 = end[1];\n    var dx = x2 - x1;\n    var dy = y2 - y1;\n    var along = (dx === 0 && dy === 0) ? 0 :\n        ((dx * (x0 - x1)) + (dy * (y0 - y1))) / ((dx * dx + dy * dy) || 0);\n    var x, y;\n    if (along <= 0) {\n        x = x1;\n        y = y1;\n    }\n    else if (along >= 1) {\n        x = x2;\n        y = y2;\n    }\n    else {\n        x = x1 + along * dx;\n        y = y1 + along * dy;\n    }\n    return [x, y];\n}\n/**\n * Returns a {@link module:ol/coordinate~CoordinateFormat} function that can be\n * used to format\n * a {Coordinate} to a string.\n *\n * Example without specifying the fractional digits:\n *\n *     import {createStringXY} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var stringifyFunc = createStringXY();\n *     var out = stringifyFunc(coord);\n *     // out is now '8, 48'\n *\n * Example with explicitly specifying 2 fractional digits:\n *\n *     import {createStringXY} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var stringifyFunc = createStringXY(2);\n *     var out = stringifyFunc(coord);\n *     // out is now '7.85, 47.98'\n *\n * @param {number=} opt_fractionDigits The number of digits to include\n *    after the decimal point. Default is `0`.\n * @return {CoordinateFormat} Coordinate format.\n * @api\n */\nexport function createStringXY(opt_fractionDigits) {\n    return (\n    /**\n     * @param {Coordinate} coordinate Coordinate.\n     * @return {string} String XY.\n     */\n    function (coordinate) {\n        return toStringXY(coordinate, opt_fractionDigits);\n    });\n}\n/**\n * @param {string} hemispheres Hemispheres.\n * @param {number} degrees Degrees.\n * @param {number=} opt_fractionDigits The number of digits to include\n *    after the decimal point. Default is `0`.\n * @return {string} String.\n */\nexport function degreesToStringHDMS(hemispheres, degrees, opt_fractionDigits) {\n    var normalizedDegrees = modulo(degrees + 180, 360) - 180;\n    var x = Math.abs(3600 * normalizedDegrees);\n    var dflPrecision = opt_fractionDigits || 0;\n    var precision = Math.pow(10, dflPrecision);\n    var deg = Math.floor(x / 3600);\n    var min = Math.floor((x - deg * 3600) / 60);\n    var sec = x - (deg * 3600) - (min * 60);\n    sec = Math.ceil(sec * precision) / precision;\n    if (sec >= 60) {\n        sec = 0;\n        min += 1;\n    }\n    if (min >= 60) {\n        min = 0;\n        deg += 1;\n    }\n    return deg + '\\u00b0 ' + padNumber(min, 2) + '\\u2032 ' +\n        padNumber(sec, 2, dflPrecision) + '\\u2033' +\n        (normalizedDegrees == 0 ? '' : ' ' + hemispheres.charAt(normalizedDegrees < 0 ? 1 : 0));\n}\n/**\n * Transforms the given {@link module:ol/coordinate~Coordinate} to a string\n * using the given string template. The strings `{x}` and `{y}` in the template\n * will be replaced with the first and second coordinate values respectively.\n *\n * Example without specifying the fractional digits:\n *\n *     import {format} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var template = 'Coordinate is ({x}|{y}).';\n *     var out = format(coord, template);\n *     // out is now 'Coordinate is (8|48).'\n *\n * Example explicitly specifying the fractional digits:\n *\n *     import {format} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var template = 'Coordinate is ({x}|{y}).';\n *     var out = format(coord, template, 2);\n *     // out is now 'Coordinate is (7.85|47.98).'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {string} template A template string with `{x}` and `{y}` placeholders\n *     that will be replaced by first and second coordinate values.\n * @param {number=} opt_fractionDigits The number of digits to include\n *    after the decimal point. Default is `0`.\n * @return {string} Formatted coordinate.\n * @api\n */\nexport function format(coordinate, template, opt_fractionDigits) {\n    if (coordinate) {\n        return template\n            .replace('{x}', coordinate[0].toFixed(opt_fractionDigits))\n            .replace('{y}', coordinate[1].toFixed(opt_fractionDigits));\n    }\n    else {\n        return '';\n    }\n}\n/**\n * @param {Coordinate} coordinate1 First coordinate.\n * @param {Coordinate} coordinate2 Second coordinate.\n * @return {boolean} The two coordinates are equal.\n */\nexport function equals(coordinate1, coordinate2) {\n    var equals = true;\n    for (var i = coordinate1.length - 1; i >= 0; --i) {\n        if (coordinate1[i] != coordinate2[i]) {\n            equals = false;\n            break;\n        }\n    }\n    return equals;\n}\n/**\n * Rotate `coordinate` by `angle`. `coordinate` is modified in place and\n * returned by the function.\n *\n * Example:\n *\n *     import {rotate} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var rotateRadians = Math.PI / 2; // 90 degrees\n *     rotate(coord, rotateRadians);\n *     // coord is now [-47.983333, 7.85]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number} angle Angle in radian.\n * @return {Coordinate} Coordinate.\n * @api\n */\nexport function rotate(coordinate, angle) {\n    var cosAngle = Math.cos(angle);\n    var sinAngle = Math.sin(angle);\n    var x = coordinate[0] * cosAngle - coordinate[1] * sinAngle;\n    var y = coordinate[1] * cosAngle + coordinate[0] * sinAngle;\n    coordinate[0] = x;\n    coordinate[1] = y;\n    return coordinate;\n}\n/**\n * Scale `coordinate` by `scale`. `coordinate` is modified in place and returned\n * by the function.\n *\n * Example:\n *\n *     import {scale as scaleCoordinate} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var scale = 1.2;\n *     scaleCoordinate(coord, scale);\n *     // coord is now [9.42, 57.5799996]\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number} scale Scale factor.\n * @return {Coordinate} Coordinate.\n */\nexport function scale(coordinate, scale) {\n    coordinate[0] *= scale;\n    coordinate[1] *= scale;\n    return coordinate;\n}\n/**\n * @param {Coordinate} coord1 First coordinate.\n * @param {Coordinate} coord2 Second coordinate.\n * @return {number} Squared distance between coord1 and coord2.\n */\nexport function squaredDistance(coord1, coord2) {\n    var dx = coord1[0] - coord2[0];\n    var dy = coord1[1] - coord2[1];\n    return dx * dx + dy * dy;\n}\n/**\n * @param {Coordinate} coord1 First coordinate.\n * @param {Coordinate} coord2 Second coordinate.\n * @return {number} Distance between coord1 and coord2.\n */\nexport function distance(coord1, coord2) {\n    return Math.sqrt(squaredDistance(coord1, coord2));\n}\n/**\n * Calculate the squared distance from a coordinate to a line segment.\n *\n * @param {Coordinate} coordinate Coordinate of the point.\n * @param {Array<Coordinate>} segment Line segment (2\n * coordinates).\n * @return {number} Squared distance from the point to the line segment.\n */\nexport function squaredDistanceToSegment(coordinate, segment) {\n    return squaredDistance(coordinate, closestOnSegment(coordinate, segment));\n}\n/**\n * Format a geographic coordinate with the hemisphere, degrees, minutes, and\n * seconds.\n *\n * Example without specifying fractional digits:\n *\n *     import {toStringHDMS} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var out = toStringHDMS(coord);\n *     // out is now '47° 58′ 60″ N 7° 50′ 60″ E'\n *\n * Example explicitly specifying 1 fractional digit:\n *\n *     import {toStringHDMS} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var out = toStringHDMS(coord, 1);\n *     // out is now '47° 58′ 60.0″ N 7° 50′ 60.0″ E'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number=} opt_fractionDigits The number of digits to include\n *    after the decimal point. Default is `0`.\n * @return {string} Hemisphere, degrees, minutes and seconds.\n * @api\n */\nexport function toStringHDMS(coordinate, opt_fractionDigits) {\n    if (coordinate) {\n        return degreesToStringHDMS('NS', coordinate[1], opt_fractionDigits) + ' ' +\n            degreesToStringHDMS('EW', coordinate[0], opt_fractionDigits);\n    }\n    else {\n        return '';\n    }\n}\n/**\n * Format a coordinate as a comma delimited string.\n *\n * Example without specifying fractional digits:\n *\n *     import {toStringXY} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var out = toStringXY(coord);\n *     // out is now '8, 48'\n *\n * Example explicitly specifying 1 fractional digit:\n *\n *     import {toStringXY} from 'ol/coordinate';\n *\n *     var coord = [7.85, 47.983333];\n *     var out = toStringXY(coord, 1);\n *     // out is now '7.8, 48.0'\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {number=} opt_fractionDigits The number of digits to include\n *    after the decimal point. Default is `0`.\n * @return {string} XY.\n * @api\n */\nexport function toStringXY(coordinate, opt_fractionDigits) {\n    return format(coordinate, '{x}, {y}', opt_fractionDigits);\n}\n/**\n * Modifies the provided coordinate in-place to be within the real world\n * extent. The lower projection extent boundary is inclusive, the upper one\n * exclusive.\n *\n * @param {Coordinate} coordinate Coordinate.\n * @param {import(\"./proj/Projection.js\").default} projection Projection\n * @return {Coordinate} The coordinate within the real world extent.\n */\nexport function wrapX(coordinate, projection) {\n    var projectionExtent = projection.getExtent();\n    if (projection.canWrapX() && (coordinate[0] < projectionExtent[0] || coordinate[0] >= projectionExtent[2])) {\n        var worldWidth = getWidth(projectionExtent);\n        var worldsAway = Math.floor((coordinate[0] - projectionExtent[0]) / worldWidth);\n        coordinate[0] -= (worldsAway * worldWidth);\n    }\n    return coordinate;\n}\n//# sourceMappingURL=coordinate.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/View\n */\nimport { DEFAULT_TILE_SIZE } from './tilegrid/common.js';\nimport { VOID } from './functions.js';\nimport { createExtent, none as centerNone } from './centerconstraint.js';\nimport BaseObject from './Object.js';\nimport { createSnapToResolutions, createSnapToPower } from './resolutionconstraint.js';\nimport { createSnapToZero, createSnapToN, none as rotationNone, disable } from './rotationconstraint.js';\nimport ViewHint from './ViewHint.js';\nimport ViewProperty from './ViewProperty.js';\nimport { linearFindNearest } from './array.js';\nimport { assert } from './asserts.js';\nimport { add as addCoordinate, rotate as rotateCoordinate, equals as coordinatesEqual } from './coordinate.js';\nimport { inAndOut } from './easing.js';\nimport { getForViewAndSize, getCenter, getHeight, getWidth, isEmpty } from './extent.js';\nimport GeometryType from './geom/GeometryType.js';\nimport { fromExtent as polygonFromExtent } from './geom/Polygon.js';\nimport { clamp, modulo } from './math.js';\nimport { assign } from './obj.js';\nimport { createProjection, METERS_PER_UNIT, toUserCoordinate, toUserExtent, fromUserCoordinate, fromUserExtent, getUserProjection } from './proj.js';\nimport Units from './proj/Units.js';\nimport { equals } from './coordinate.js';\nimport { easeOut } from './easing.js';\nimport { createMinMaxResolution } from './resolutionconstraint.js';\n/**\n * An animation configuration\n *\n * @typedef {Object} Animation\n * @property {import(\"./coordinate.js\").Coordinate} [sourceCenter]\n * @property {import(\"./coordinate.js\").Coordinate} [targetCenter]\n * @property {number} [sourceResolution]\n * @property {number} [targetResolution]\n * @property {number} [sourceRotation]\n * @property {number} [targetRotation]\n * @property {import(\"./coordinate.js\").Coordinate} [anchor]\n * @property {number} start\n * @property {number} duration\n * @property {boolean} complete\n * @property {function(number):number} easing\n * @property {function(boolean)} callback\n */\n/**\n * @typedef {Object} Constraints\n * @property {import(\"./centerconstraint.js\").Type} center\n * @property {import(\"./resolutionconstraint.js\").Type} resolution\n * @property {import(\"./rotationconstraint.js\").Type} rotation\n */\n/**\n * @typedef {Object} FitOptions\n * @property {import(\"./size.js\").Size} [size] The size in pixels of the box to fit\n * the extent into. Default is the current size of the first map in the DOM that\n * uses this view, or `[100, 100]` if no such map is found.\n * @property {!Array<number>} [padding=[0, 0, 0, 0]] Padding (in pixels) to be\n * cleared inside the view. Values in the array are top, right, bottom and left\n * padding.\n * @property {boolean} [nearest=false] If the view `constrainResolution` option is `true`,\n * get the nearest extent instead of the closest that actually fits the view.\n * @property {number} [minResolution=0] Minimum resolution that we zoom to.\n * @property {number} [maxZoom] Maximum zoom level that we zoom to. If\n * `minResolution` is given, this property is ignored.\n * @property {number} [duration] The duration of the animation in milliseconds.\n * By default, there is no animation to the target extent.\n * @property {function(number):number} [easing] The easing function used during\n * the animation (defaults to {@link module:ol/easing~inAndOut}).\n * The function will be called for each frame with a number representing a\n * fraction of the animation's duration.  The function should return a number\n * between 0 and 1 representing the progress toward the destination state.\n * @property {function(boolean)} [callback] Function called when the view is in\n * its final position. The callback will be called with `true` if the animation\n * series completed on its own or `false` if it was cancelled.\n */\n/**\n * @typedef {Object} ViewOptions\n * @property {import(\"./coordinate.js\").Coordinate} [center] The initial center for\n * the view. If a user projection is not set, the coordinate system for the center is\n * specified with the `projection` option. Layer sources will not be fetched if this\n * is not set, but the center can be set later with {@link #setCenter}.\n * @property {boolean|number} [constrainRotation=true] Rotation constraint.\n * `false` means no constraint. `true` means no constraint, but snap to zero\n * near zero. A number constrains the rotation to that number of values. For\n * example, `4` will constrain the rotation to 0, 90, 180, and 270 degrees.\n * @property {boolean} [enableRotation=true] Enable rotation.\n * If `false`, a rotation constraint that always sets the rotation to zero is\n * used. The `constrainRotation` option has no effect if `enableRotation` is\n * `false`.\n * @property {import(\"./extent.js\").Extent} [extent] The extent that constrains the\n * view, in other words, nothing outside of this extent can be visible on the map.\n * @property {boolean} [constrainOnlyCenter=false] If true, the extent\n * constraint will only apply to the view center and not the whole extent.\n * @property {boolean} [smoothExtentConstraint=true] If true, the extent\n * constraint will be applied smoothly, i.e. allow the view to go slightly outside\n * of the given `extent`.\n * @property {number} [maxResolution] The maximum resolution used to determine\n * the resolution constraint. It is used together with `minResolution` (or\n * `maxZoom`) and `zoomFactor`. If unspecified it is calculated in such a way\n * that the projection's validity extent fits in a 256x256 px tile. If the\n * projection is Spherical Mercator (the default) then `maxResolution` defaults\n * to `40075016.68557849 / 256 = 156543.03392804097`.\n * @property {number} [minResolution] The minimum resolution used to determine\n * the resolution constraint.  It is used together with `maxResolution` (or\n * `minZoom`) and `zoomFactor`.  If unspecified it is calculated assuming 29\n * zoom levels (with a factor of 2). If the projection is Spherical Mercator\n * (the default) then `minResolution` defaults to\n * `40075016.68557849 / 256 / Math.pow(2, 28) = 0.0005831682455839253`.\n * @property {number} [maxZoom=28] The maximum zoom level used to determine the\n * resolution constraint. It is used together with `minZoom` (or\n * `maxResolution`) and `zoomFactor`.  Note that if `minResolution` is also\n * provided, it is given precedence over `maxZoom`.\n * @property {number} [minZoom=0] The minimum zoom level used to determine the\n * resolution constraint. It is used together with `maxZoom` (or\n * `minResolution`) and `zoomFactor`.  Note that if `maxResolution` is also\n * provided, it is given precedence over `minZoom`.\n * @property {boolean} [multiWorld=false] If `false` the view is constrained so\n * only one world is visible, and you cannot pan off the edge.  If `true` the map\n * may show multiple worlds at low zoom levels.  Only used if the `projection` is\n * global.  Note that if `extent` is also provided it is given precedence.\n * @property {boolean} [constrainResolution=false] If true, the view will always\n * animate to the closest zoom level after an interaction; false means\n * intermediary zoom levels are allowed.\n * @property {boolean} [smoothResolutionConstraint=true] If true, the resolution\n * min/max values will be applied smoothly, i. e. allow the view to exceed slightly\n * the given resolution or zoom bounds.\n * @property {boolean} [showFullExtent=false] Allow the view to be zoomed out to\n * show the full configured extent. By default, when a view is configured with an\n * extent, users will not be able to zoom out so the viewport exceeds the extent in\n * either dimension. This means the full extent may not be visible if the viewport\n * is taller or wider than the aspect ratio of the configured extent. If\n * showFullExtent is true, the user will be able to zoom out so that the viewport\n * exceeds the height or width of the configured extent, but not both, allowing the\n * full extent to be shown.\n * @property {import(\"./proj.js\").ProjectionLike} [projection='EPSG:3857'] The\n * projection. The default is Spherical Mercator.\n * @property {number} [resolution] The initial resolution for the view. The\n * units are `projection` units per pixel (e.g. meters per pixel). An\n * alternative to setting this is to set `zoom`. Layer sources will not be\n * fetched if neither this nor `zoom` are defined, but they can be set later\n * with {@link #setZoom} or {@link #setResolution}.\n * @property {Array<number>} [resolutions] Resolutions to determine the\n * resolution constraint. If set the `maxResolution`, `minResolution`,\n * `minZoom`, `maxZoom`, and `zoomFactor` options are ignored.\n * @property {number} [rotation=0] The initial rotation for the view in radians\n * (positive rotation clockwise, 0 means North).\n * @property {number} [zoom] Only used if `resolution` is not defined. Zoom\n * level used to calculate the initial resolution for the view.\n * @property {number} [zoomFactor=2] The zoom factor used to compute the\n * corresponding resolution.\n */\n/**\n * @typedef {Object} AnimationOptions\n * @property {import(\"./coordinate.js\").Coordinate} [center] The center of the view at the end of\n * the animation.\n * @property {number} [zoom] The zoom level of the view at the end of the\n * animation. This takes precedence over `resolution`.\n * @property {number} [resolution] The resolution of the view at the end\n * of the animation.  If `zoom` is also provided, this option will be ignored.\n * @property {number} [rotation] The rotation of the view at the end of\n * the animation.\n * @property {import(\"./coordinate.js\").Coordinate} [anchor] Optional anchor to remain fixed\n * during a rotation or resolution animation.\n * @property {number} [duration=1000] The duration of the animation in milliseconds.\n * @property {function(number):number} [easing] The easing function used\n * during the animation (defaults to {@link module:ol/easing~inAndOut}).\n * The function will be called for each frame with a number representing a\n * fraction of the animation's duration.  The function should return a number\n * between 0 and 1 representing the progress toward the destination state.\n */\n/**\n * @typedef {Object} State\n * @property {import(\"./coordinate.js\").Coordinate} center\n * @property {import(\"./proj/Projection.js\").default} projection\n * @property {number} resolution\n * @property {number} rotation\n * @property {number} zoom\n */\n/**\n * Default min zoom level for the map view.\n * @type {number}\n */\nvar DEFAULT_MIN_ZOOM = 0;\n/**\n * @classdesc\n * A View object represents a simple 2D view of the map.\n *\n * This is the object to act upon to change the center, resolution,\n * and rotation of the map.\n *\n * A View has a `projection`. The projection determines the\n * coordinate system of the center, and its units determine the units of the\n * resolution (projection units per pixel). The default projection is\n * Spherical Mercator (EPSG:3857).\n *\n * ### The view states\n *\n * A View is determined by three states: `center`, `resolution`,\n * and `rotation`. Each state has a corresponding getter and setter, e.g.\n * `getCenter` and `setCenter` for the `center` state.\n *\n * The `zoom` state is actually not saved on the view: all computations\n * internally use the `resolution` state. Still, the `setZoom` and `getZoom`\n * methods are available, as well as `getResolutionForZoom` and\n * `getZoomForResolution` to switch from one system to the other.\n *\n * ### The constraints\n *\n * `setCenter`, `setResolution` and `setRotation` can be used to change the\n * states of the view, but any constraint defined in the constructor will\n * be applied along the way.\n *\n * A View object can have a *resolution constraint*, a *rotation constraint*\n * and a *center constraint*.\n *\n * The *resolution constraint* typically restricts min/max values and\n * snaps to specific resolutions. It is determined by the following\n * options: `resolutions`, `maxResolution`, `maxZoom` and `zoomFactor`.\n * If `resolutions` is set, the other three options are ignored. See\n * documentation for each option for more information. By default, the view\n * only has a min/max restriction and allow intermediary zoom levels when\n * pinch-zooming for example.\n *\n * The *rotation constraint* snaps to specific angles. It is determined\n * by the following options: `enableRotation` and `constrainRotation`.\n * By default rotation is allowed and its value is snapped to zero when approaching the\n * horizontal.\n *\n * The *center constraint* is determined by the `extent` option. By\n * default the view center is not constrained at all.\n *\n * ### Changing the view state\n *\n * It is important to note that `setZoom`, `setResolution`, `setCenter` and\n * `setRotation` are subject to the above mentioned constraints. As such, it\n * may sometimes not be possible to know in advance the resulting state of the\n * View. For example, calling `setResolution(10)` does not guarantee that\n * `getResolution()` will return `10`.\n *\n * A consequence of this is that, when applying a delta on the view state, one\n * should use `adjustCenter`, `adjustRotation`, `adjustZoom` and `adjustResolution`\n * rather than the corresponding setters. This will let view do its internal\n * computations. Besides, the `adjust*` methods also take an `opt_anchor`\n * argument which allows specifying an origin for the transformation.\n *\n * ### Interacting with the view\n *\n * View constraints are usually only applied when the view is *at rest*, meaning that\n * no interaction or animation is ongoing. As such, if the user puts the view in a\n * state that is not equivalent to a constrained one (e.g. rotating the view when\n * the snap angle is 0), an animation will be triggered at the interaction end to\n * put back the view to a stable state;\n *\n * @api\n */\nvar View = /** @class */ (function (_super) {\n    __extends(View, _super);\n    /**\n     * @param {ViewOptions=} opt_options View options.\n     */\n    function View(opt_options) {\n        var _this = _super.call(this) || this;\n        var options = assign({}, opt_options);\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.hints_ = [0, 0];\n        /**\n         * @private\n         * @type {Array<Array<Animation>>}\n         */\n        _this.animations_ = [];\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.updateAnimationKey_;\n        /**\n         * @private\n         * @const\n         * @type {import(\"./proj/Projection.js\").default}\n         */\n        _this.projection_ = createProjection(options.projection, 'EPSG:3857');\n        /**\n         * @private\n         * @type {import(\"./size.js\").Size}\n         */\n        _this.viewportSize_ = [100, 100];\n        /**\n         * @private\n         * @type {import(\"./coordinate.js\").Coordinate|undefined}\n         */\n        _this.targetCenter_ = null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.targetResolution_;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.targetRotation_;\n        /**\n         * @private\n         * @type {import(\"./coordinate.js\").Coordinate|undefined}\n         */\n        _this.cancelAnchor_ = undefined;\n        if (options.center) {\n            options.center = fromUserCoordinate(options.center, _this.projection_);\n        }\n        if (options.extent) {\n            options.extent = fromUserExtent(options.extent, _this.projection_);\n        }\n        _this.applyOptions_(options);\n        return _this;\n    }\n    /**\n     * Set up the view with the given options.\n     * @param {ViewOptions} options View options.\n     */\n    View.prototype.applyOptions_ = function (options) {\n        /**\n         * @type {Object<string, *>}\n         */\n        var properties = {};\n        var resolutionConstraintInfo = createResolutionConstraint(options);\n        /**\n         * @private\n         * @type {number}\n         */\n        this.maxResolution_ = resolutionConstraintInfo.maxResolution;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.minResolution_ = resolutionConstraintInfo.minResolution;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.zoomFactor_ = resolutionConstraintInfo.zoomFactor;\n        /**\n         * @private\n         * @type {Array<number>|undefined}\n         */\n        this.resolutions_ = options.resolutions;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.minZoom_ = resolutionConstraintInfo.minZoom;\n        var centerConstraint = createCenterConstraint(options);\n        var resolutionConstraint = resolutionConstraintInfo.constraint;\n        var rotationConstraint = createRotationConstraint(options);\n        /**\n         * @private\n         * @type {Constraints}\n         */\n        this.constraints_ = {\n            center: centerConstraint,\n            resolution: resolutionConstraint,\n            rotation: rotationConstraint\n        };\n        this.setRotation(options.rotation !== undefined ? options.rotation : 0);\n        this.setCenterInternal(options.center !== undefined ? options.center : null);\n        if (options.resolution !== undefined) {\n            this.setResolution(options.resolution);\n        }\n        else if (options.zoom !== undefined) {\n            this.setZoom(options.zoom);\n        }\n        this.setProperties(properties);\n        /**\n         * @private\n         * @type {ViewOptions}\n         */\n        this.options_ = options;\n    };\n    /**\n     * Get an updated version of the view options used to construct the view.  The\n     * current resolution (or zoom), center, and rotation are applied to any stored\n     * options.  The provided options can be used to apply new min/max zoom or\n     * resolution limits.\n     * @param {ViewOptions} newOptions New options to be applied.\n     * @return {ViewOptions} New options updated with the current view state.\n     */\n    View.prototype.getUpdatedOptions_ = function (newOptions) {\n        var options = assign({}, this.options_);\n        // preserve resolution (or zoom)\n        if (options.resolution !== undefined) {\n            options.resolution = this.getResolution();\n        }\n        else {\n            options.zoom = this.getZoom();\n        }\n        // preserve center\n        options.center = this.getCenterInternal();\n        // preserve rotation\n        options.rotation = this.getRotation();\n        return assign({}, options, newOptions);\n    };\n    /**\n     * Animate the view.  The view's center, zoom (or resolution), and rotation\n     * can be animated for smooth transitions between view states.  For example,\n     * to animate the view to a new zoom level:\n     *\n     *     view.animate({zoom: view.getZoom() + 1});\n     *\n     * By default, the animation lasts one second and uses in-and-out easing.  You\n     * can customize this behavior by including `duration` (in milliseconds) and\n     * `easing` options (see {@link module:ol/easing}).\n     *\n     * To chain together multiple animations, call the method with multiple\n     * animation objects.  For example, to first zoom and then pan:\n     *\n     *     view.animate({zoom: 10}, {center: [0, 0]});\n     *\n     * If you provide a function as the last argument to the animate method, it\n     * will get called at the end of an animation series.  The callback will be\n     * called with `true` if the animation series completed on its own or `false`\n     * if it was cancelled.\n     *\n     * Animations are cancelled by user interactions (e.g. dragging the map) or by\n     * calling `view.setCenter()`, `view.setResolution()`, or `view.setRotation()`\n     * (or another method that calls one of these).\n     *\n     * @param {...(AnimationOptions|function(boolean): void)} var_args Animation\n     *     options.  Multiple animations can be run in series by passing multiple\n     *     options objects.  To run multiple animations in parallel, call the method\n     *     multiple times.  An optional callback can be provided as a final\n     *     argument.  The callback will be called with a boolean indicating whether\n     *     the animation completed without being cancelled.\n     * @api\n     */\n    View.prototype.animate = function (var_args) {\n        if (this.isDef() && !this.getAnimating()) {\n            this.resolveConstraints(0);\n        }\n        var args = new Array(arguments.length);\n        for (var i = 0; i < args.length; ++i) {\n            var options = arguments[i];\n            if (options.center) {\n                options = assign({}, options);\n                options.center = fromUserCoordinate(options.center, this.getProjection());\n            }\n            if (options.anchor) {\n                options = assign({}, options);\n                options.anchor = fromUserCoordinate(options.anchor, this.getProjection());\n            }\n            args[i] = options;\n        }\n        this.animateInternal.apply(this, args);\n    };\n    /**\n     * @param {...(AnimationOptions|function(boolean): void)} var_args Animation options.\n     */\n    View.prototype.animateInternal = function (var_args) {\n        var animationCount = arguments.length;\n        var callback;\n        if (animationCount > 1 && typeof arguments[animationCount - 1] === 'function') {\n            callback = arguments[animationCount - 1];\n            --animationCount;\n        }\n        if (!this.isDef()) {\n            // if view properties are not yet set, shortcut to the final state\n            var state = arguments[animationCount - 1];\n            if (state.center) {\n                this.setCenterInternal(state.center);\n            }\n            if (state.zoom !== undefined) {\n                this.setZoom(state.zoom);\n            }\n            if (state.rotation !== undefined) {\n                this.setRotation(state.rotation);\n            }\n            if (callback) {\n                animationCallback(callback, true);\n            }\n            return;\n        }\n        var start = Date.now();\n        var center = this.targetCenter_.slice();\n        var resolution = this.targetResolution_;\n        var rotation = this.targetRotation_;\n        var series = [];\n        for (var i = 0; i < animationCount; ++i) {\n            var options = /** @type {AnimationOptions} */ (arguments[i]);\n            var animation = {\n                start: start,\n                complete: false,\n                anchor: options.anchor,\n                duration: options.duration !== undefined ? options.duration : 1000,\n                easing: options.easing || inAndOut,\n                callback: callback\n            };\n            if (options.center) {\n                animation.sourceCenter = center;\n                animation.targetCenter = options.center.slice();\n                center = animation.targetCenter;\n            }\n            if (options.zoom !== undefined) {\n                animation.sourceResolution = resolution;\n                animation.targetResolution = this.getResolutionForZoom(options.zoom);\n                resolution = animation.targetResolution;\n            }\n            else if (options.resolution) {\n                animation.sourceResolution = resolution;\n                animation.targetResolution = options.resolution;\n                resolution = animation.targetResolution;\n            }\n            if (options.rotation !== undefined) {\n                animation.sourceRotation = rotation;\n                var delta = modulo(options.rotation - rotation + Math.PI, 2 * Math.PI) - Math.PI;\n                animation.targetRotation = rotation + delta;\n                rotation = animation.targetRotation;\n            }\n            // check if animation is a no-op\n            if (isNoopAnimation(animation)) {\n                animation.complete = true;\n                // we still push it onto the series for callback handling\n            }\n            else {\n                start += animation.duration;\n            }\n            series.push(animation);\n        }\n        this.animations_.push(series);\n        this.setHint(ViewHint.ANIMATING, 1);\n        this.updateAnimations_();\n    };\n    /**\n     * Determine if the view is being animated.\n     * @return {boolean} The view is being animated.\n     * @api\n     */\n    View.prototype.getAnimating = function () {\n        return this.hints_[ViewHint.ANIMATING] > 0;\n    };\n    /**\n     * Determine if the user is interacting with the view, such as panning or zooming.\n     * @return {boolean} The view is being interacted with.\n     * @api\n     */\n    View.prototype.getInteracting = function () {\n        return this.hints_[ViewHint.INTERACTING] > 0;\n    };\n    /**\n     * Cancel any ongoing animations.\n     * @api\n     */\n    View.prototype.cancelAnimations = function () {\n        this.setHint(ViewHint.ANIMATING, -this.hints_[ViewHint.ANIMATING]);\n        var anchor;\n        for (var i = 0, ii = this.animations_.length; i < ii; ++i) {\n            var series = this.animations_[i];\n            if (series[0].callback) {\n                animationCallback(series[0].callback, false);\n            }\n            if (!anchor) {\n                for (var j = 0, jj = series.length; j < jj; ++j) {\n                    var animation = series[j];\n                    if (!animation.complete) {\n                        anchor = animation.anchor;\n                        break;\n                    }\n                }\n            }\n        }\n        this.animations_.length = 0;\n        this.cancelAnchor_ = anchor;\n    };\n    /**\n     * Update all animations.\n     */\n    View.prototype.updateAnimations_ = function () {\n        if (this.updateAnimationKey_ !== undefined) {\n            cancelAnimationFrame(this.updateAnimationKey_);\n            this.updateAnimationKey_ = undefined;\n        }\n        if (!this.getAnimating()) {\n            return;\n        }\n        var now = Date.now();\n        var more = false;\n        for (var i = this.animations_.length - 1; i >= 0; --i) {\n            var series = this.animations_[i];\n            var seriesComplete = true;\n            for (var j = 0, jj = series.length; j < jj; ++j) {\n                var animation = series[j];\n                if (animation.complete) {\n                    continue;\n                }\n                var elapsed = now - animation.start;\n                var fraction = animation.duration > 0 ? elapsed / animation.duration : 1;\n                if (fraction >= 1) {\n                    animation.complete = true;\n                    fraction = 1;\n                }\n                else {\n                    seriesComplete = false;\n                }\n                var progress = animation.easing(fraction);\n                if (animation.sourceCenter) {\n                    var x0 = animation.sourceCenter[0];\n                    var y0 = animation.sourceCenter[1];\n                    var x1 = animation.targetCenter[0];\n                    var y1 = animation.targetCenter[1];\n                    var x = x0 + progress * (x1 - x0);\n                    var y = y0 + progress * (y1 - y0);\n                    this.targetCenter_ = [x, y];\n                }\n                if (animation.sourceResolution && animation.targetResolution) {\n                    var resolution = progress === 1 ?\n                        animation.targetResolution :\n                        animation.sourceResolution + progress * (animation.targetResolution - animation.sourceResolution);\n                    if (animation.anchor) {\n                        var size = this.getViewportSize_(this.getRotation());\n                        var constrainedResolution = this.constraints_.resolution(resolution, 0, size, true);\n                        this.targetCenter_ = this.calculateCenterZoom(constrainedResolution, animation.anchor);\n                    }\n                    this.targetResolution_ = resolution;\n                    this.applyTargetState_(true);\n                }\n                if (animation.sourceRotation !== undefined && animation.targetRotation !== undefined) {\n                    var rotation = progress === 1 ?\n                        modulo(animation.targetRotation + Math.PI, 2 * Math.PI) - Math.PI :\n                        animation.sourceRotation + progress * (animation.targetRotation - animation.sourceRotation);\n                    if (animation.anchor) {\n                        var constrainedRotation = this.constraints_.rotation(rotation, true);\n                        this.targetCenter_ = this.calculateCenterRotate(constrainedRotation, animation.anchor);\n                    }\n                    this.targetRotation_ = rotation;\n                }\n                this.applyTargetState_(true);\n                more = true;\n                if (!animation.complete) {\n                    break;\n                }\n            }\n            if (seriesComplete) {\n                this.animations_[i] = null;\n                this.setHint(ViewHint.ANIMATING, -1);\n                var callback = series[0].callback;\n                if (callback) {\n                    animationCallback(callback, true);\n                }\n            }\n        }\n        // prune completed series\n        this.animations_ = this.animations_.filter(Boolean);\n        if (more && this.updateAnimationKey_ === undefined) {\n            this.updateAnimationKey_ = requestAnimationFrame(this.updateAnimations_.bind(this));\n        }\n    };\n    /**\n     * @param {number} rotation Target rotation.\n     * @param {import(\"./coordinate.js\").Coordinate} anchor Rotation anchor.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} Center for rotation and anchor.\n     */\n    View.prototype.calculateCenterRotate = function (rotation, anchor) {\n        var center;\n        var currentCenter = this.getCenterInternal();\n        if (currentCenter !== undefined) {\n            center = [currentCenter[0] - anchor[0], currentCenter[1] - anchor[1]];\n            rotateCoordinate(center, rotation - this.getRotation());\n            addCoordinate(center, anchor);\n        }\n        return center;\n    };\n    /**\n     * @param {number} resolution Target resolution.\n     * @param {import(\"./coordinate.js\").Coordinate} anchor Zoom anchor.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} Center for resolution and anchor.\n     */\n    View.prototype.calculateCenterZoom = function (resolution, anchor) {\n        var center;\n        var currentCenter = this.getCenterInternal();\n        var currentResolution = this.getResolution();\n        if (currentCenter !== undefined && currentResolution !== undefined) {\n            var x = anchor[0] - resolution * (anchor[0] - currentCenter[0]) / currentResolution;\n            var y = anchor[1] - resolution * (anchor[1] - currentCenter[1]) / currentResolution;\n            center = [x, y];\n        }\n        return center;\n    };\n    /**\n     * Returns the current viewport size.\n     * @private\n     * @param {number=} opt_rotation Take into account the rotation of the viewport when giving the size\n     * @return {import(\"./size.js\").Size} Viewport size or `[100, 100]` when no viewport is found.\n     */\n    View.prototype.getViewportSize_ = function (opt_rotation) {\n        var size = this.viewportSize_;\n        if (opt_rotation) {\n            var w = size[0];\n            var h = size[1];\n            return [\n                Math.abs(w * Math.cos(opt_rotation)) + Math.abs(h * Math.sin(opt_rotation)),\n                Math.abs(w * Math.sin(opt_rotation)) + Math.abs(h * Math.cos(opt_rotation))\n            ];\n        }\n        else {\n            return size;\n        }\n    };\n    /**\n     * Stores the viewport size on the view. The viewport size is not read every time from the DOM\n     * to avoid performance hit and layout reflow.\n     * This should be done on map size change.\n     * @param {import(\"./size.js\").Size=} opt_size Viewport size; if undefined, [100, 100] is assumed\n     */\n    View.prototype.setViewportSize = function (opt_size) {\n        this.viewportSize_ = Array.isArray(opt_size) ? opt_size.slice() : [100, 100];\n        this.resolveConstraints(0);\n    };\n    /**\n     * Get the view center.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} The center of the view.\n     * @observable\n     * @api\n     */\n    View.prototype.getCenter = function () {\n        var center = this.getCenterInternal();\n        if (!center) {\n            return center;\n        }\n        return toUserCoordinate(center, this.getProjection());\n    };\n    /**\n     * Get the view center without transforming to user projection.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} The center of the view.\n     */\n    View.prototype.getCenterInternal = function () {\n        return /** @type {import(\"./coordinate.js\").Coordinate|undefined} */ (this.get(ViewProperty.CENTER));\n    };\n    /**\n     * @return {Constraints} Constraints.\n     */\n    View.prototype.getConstraints = function () {\n        return this.constraints_;\n    };\n    /**\n     * @return {boolean} Resolution constraint is set\n     */\n    View.prototype.getConstrainResolution = function () {\n        return this.options_.constrainResolution;\n    };\n    /**\n     * @param {Array<number>=} opt_hints Destination array.\n     * @return {Array<number>} Hint.\n     */\n    View.prototype.getHints = function (opt_hints) {\n        if (opt_hints !== undefined) {\n            opt_hints[0] = this.hints_[0];\n            opt_hints[1] = this.hints_[1];\n            return opt_hints;\n        }\n        else {\n            return this.hints_.slice();\n        }\n    };\n    /**\n     * Calculate the extent for the current view state and the passed size.\n     * The size is the pixel dimensions of the box into which the calculated extent\n     * should fit. In most cases you want to get the extent of the entire map,\n     * that is `map.getSize()`.\n     * @param {import(\"./size.js\").Size=} opt_size Box pixel size. If not provided, the size\n     * of the map that uses this view will be used.\n     * @return {import(\"./extent.js\").Extent} Extent.\n     * @api\n     */\n    View.prototype.calculateExtent = function (opt_size) {\n        var extent = this.calculateExtentInternal(opt_size);\n        return toUserExtent(extent, this.getProjection());\n    };\n    /**\n     * @param {import(\"./size.js\").Size=} opt_size Box pixel size. If not provided, the size of the\n     * first map that uses this view will be used.\n     * @return {import(\"./extent.js\").Extent} Extent.\n     */\n    View.prototype.calculateExtentInternal = function (opt_size) {\n        var size = opt_size || this.getViewportSize_();\n        var center = /** @type {!import(\"./coordinate.js\").Coordinate} */ (this.getCenterInternal());\n        assert(center, 1); // The view center is not defined\n        var resolution = /** @type {!number} */ (this.getResolution());\n        assert(resolution !== undefined, 2); // The view resolution is not defined\n        var rotation = /** @type {!number} */ (this.getRotation());\n        assert(rotation !== undefined, 3); // The view rotation is not defined\n        return getForViewAndSize(center, resolution, rotation, size);\n    };\n    /**\n     * Get the maximum resolution of the view.\n     * @return {number} The maximum resolution of the view.\n     * @api\n     */\n    View.prototype.getMaxResolution = function () {\n        return this.maxResolution_;\n    };\n    /**\n     * Get the minimum resolution of the view.\n     * @return {number} The minimum resolution of the view.\n     * @api\n     */\n    View.prototype.getMinResolution = function () {\n        return this.minResolution_;\n    };\n    /**\n     * Get the maximum zoom level for the view.\n     * @return {number} The maximum zoom level.\n     * @api\n     */\n    View.prototype.getMaxZoom = function () {\n        return /** @type {number} */ (this.getZoomForResolution(this.minResolution_));\n    };\n    /**\n     * Set a new maximum zoom level for the view.\n     * @param {number} zoom The maximum zoom level.\n     * @api\n     */\n    View.prototype.setMaxZoom = function (zoom) {\n        this.applyOptions_(this.getUpdatedOptions_({ maxZoom: zoom }));\n    };\n    /**\n     * Get the minimum zoom level for the view.\n     * @return {number} The minimum zoom level.\n     * @api\n     */\n    View.prototype.getMinZoom = function () {\n        return /** @type {number} */ (this.getZoomForResolution(this.maxResolution_));\n    };\n    /**\n     * Set a new minimum zoom level for the view.\n     * @param {number} zoom The minimum zoom level.\n     * @api\n     */\n    View.prototype.setMinZoom = function (zoom) {\n        this.applyOptions_(this.getUpdatedOptions_({ minZoom: zoom }));\n    };\n    /**\n     * Set whether the view shoud allow intermediary zoom levels.\n     * @param {boolean} enabled Whether the resolution is constrained.\n     * @api\n     */\n    View.prototype.setConstrainResolution = function (enabled) {\n        this.applyOptions_(this.getUpdatedOptions_({ constrainResolution: enabled }));\n    };\n    /**\n     * Get the view projection.\n     * @return {import(\"./proj/Projection.js\").default} The projection of the view.\n     * @api\n     */\n    View.prototype.getProjection = function () {\n        return this.projection_;\n    };\n    /**\n     * Get the view resolution.\n     * @return {number|undefined} The resolution of the view.\n     * @observable\n     * @api\n     */\n    View.prototype.getResolution = function () {\n        return /** @type {number|undefined} */ (this.get(ViewProperty.RESOLUTION));\n    };\n    /**\n     * Get the resolutions for the view. This returns the array of resolutions\n     * passed to the constructor of the View, or undefined if none were given.\n     * @return {Array<number>|undefined} The resolutions of the view.\n     * @api\n     */\n    View.prototype.getResolutions = function () {\n        return this.resolutions_;\n    };\n    /**\n     * Get the resolution for a provided extent (in map units) and size (in pixels).\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {import(\"./size.js\").Size=} opt_size Box pixel size.\n     * @return {number} The resolution at which the provided extent will render at\n     *     the given size.\n     * @api\n     */\n    View.prototype.getResolutionForExtent = function (extent, opt_size) {\n        return this.getResolutionForExtentInternal(fromUserExtent(extent, this.getProjection()), opt_size);\n    };\n    /**\n     * Get the resolution for a provided extent (in map units) and size (in pixels).\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {import(\"./size.js\").Size=} opt_size Box pixel size.\n     * @return {number} The resolution at which the provided extent will render at\n     *     the given size.\n     */\n    View.prototype.getResolutionForExtentInternal = function (extent, opt_size) {\n        var size = opt_size || this.getViewportSize_();\n        var xResolution = getWidth(extent) / size[0];\n        var yResolution = getHeight(extent) / size[1];\n        return Math.max(xResolution, yResolution);\n    };\n    /**\n     * Return a function that returns a value between 0 and 1 for a\n     * resolution. Exponential scaling is assumed.\n     * @param {number=} opt_power Power.\n     * @return {function(number): number} Resolution for value function.\n     */\n    View.prototype.getResolutionForValueFunction = function (opt_power) {\n        var power = opt_power || 2;\n        var maxResolution = this.getConstrainedResolution(this.maxResolution_);\n        var minResolution = this.minResolution_;\n        var max = Math.log(maxResolution / minResolution) / Math.log(power);\n        return (\n        /**\n         * @param {number} value Value.\n         * @return {number} Resolution.\n         */\n        function (value) {\n            var resolution = maxResolution / Math.pow(power, value * max);\n            return resolution;\n        });\n    };\n    /**\n     * Get the view rotation.\n     * @return {number} The rotation of the view in radians.\n     * @observable\n     * @api\n     */\n    View.prototype.getRotation = function () {\n        return /** @type {number} */ (this.get(ViewProperty.ROTATION));\n    };\n    /**\n     * Return a function that returns a resolution for a value between\n     * 0 and 1. Exponential scaling is assumed.\n     * @param {number=} opt_power Power.\n     * @return {function(number): number} Value for resolution function.\n     */\n    View.prototype.getValueForResolutionFunction = function (opt_power) {\n        var logPower = Math.log(opt_power || 2);\n        var maxResolution = this.getConstrainedResolution(this.maxResolution_);\n        var minResolution = this.minResolution_;\n        var max = Math.log(maxResolution / minResolution) / logPower;\n        return (\n        /**\n         * @param {number} resolution Resolution.\n         * @return {number} Value.\n         */\n        function (resolution) {\n            var value = (Math.log(maxResolution / resolution) / logPower) / max;\n            return value;\n        });\n    };\n    /**\n     * @return {State} View state.\n     */\n    View.prototype.getState = function () {\n        var center = /** @type {import(\"./coordinate.js\").Coordinate} */ (this.getCenterInternal());\n        var projection = this.getProjection();\n        var resolution = /** @type {number} */ (this.getResolution());\n        var rotation = this.getRotation();\n        return {\n            center: center.slice(0),\n            projection: projection !== undefined ? projection : null,\n            resolution: resolution,\n            rotation: rotation,\n            zoom: this.getZoom()\n        };\n    };\n    /**\n     * Get the current zoom level. This method may return non-integer zoom levels\n     * if the view does not constrain the resolution, or if an interaction or\n     * animation is underway.\n     * @return {number|undefined} Zoom.\n     * @api\n     */\n    View.prototype.getZoom = function () {\n        var zoom;\n        var resolution = this.getResolution();\n        if (resolution !== undefined) {\n            zoom = this.getZoomForResolution(resolution);\n        }\n        return zoom;\n    };\n    /**\n     * Get the zoom level for a resolution.\n     * @param {number} resolution The resolution.\n     * @return {number|undefined} The zoom level for the provided resolution.\n     * @api\n     */\n    View.prototype.getZoomForResolution = function (resolution) {\n        var offset = this.minZoom_ || 0;\n        var max, zoomFactor;\n        if (this.resolutions_) {\n            var nearest = linearFindNearest(this.resolutions_, resolution, 1);\n            offset = nearest;\n            max = this.resolutions_[nearest];\n            if (nearest == this.resolutions_.length - 1) {\n                zoomFactor = 2;\n            }\n            else {\n                zoomFactor = max / this.resolutions_[nearest + 1];\n            }\n        }\n        else {\n            max = this.maxResolution_;\n            zoomFactor = this.zoomFactor_;\n        }\n        return offset + Math.log(max / resolution) / Math.log(zoomFactor);\n    };\n    /**\n     * Get the resolution for a zoom level.\n     * @param {number} zoom Zoom level.\n     * @return {number} The view resolution for the provided zoom level.\n     * @api\n     */\n    View.prototype.getResolutionForZoom = function (zoom) {\n        if (this.resolutions_) {\n            if (this.resolutions_.length <= 1) {\n                return 0;\n            }\n            var baseLevel = clamp(Math.floor(zoom), 0, this.resolutions_.length - 2);\n            var zoomFactor = this.resolutions_[baseLevel] / this.resolutions_[baseLevel + 1];\n            return this.resolutions_[baseLevel] / Math.pow(zoomFactor, clamp(zoom - baseLevel, 0, 1));\n        }\n        else {\n            return this.maxResolution_ / Math.pow(this.zoomFactor_, zoom - this.minZoom_);\n        }\n    };\n    /**\n     * Fit the given geometry or extent based on the given map size and border.\n     * The size is pixel dimensions of the box to fit the extent into.\n     * In most cases you will want to use the map size, that is `map.getSize()`.\n     * Takes care of the map angle.\n     * @param {import(\"./geom/SimpleGeometry.js\").default|import(\"./extent.js\").Extent} geometryOrExtent The geometry or\n     *     extent to fit the view to.\n     * @param {FitOptions=} opt_options Options.\n     * @api\n     */\n    View.prototype.fit = function (geometryOrExtent, opt_options) {\n        var options = assign({ size: this.getViewportSize_() }, opt_options || {});\n        /** @type {import(\"./geom/SimpleGeometry.js\").default} */\n        var geometry;\n        assert(Array.isArray(geometryOrExtent) || typeof /** @type {?} */ (geometryOrExtent).getSimplifiedGeometry === 'function', 24); // Invalid extent or geometry provided as `geometry`\n        if (Array.isArray(geometryOrExtent)) {\n            assert(!isEmpty(geometryOrExtent), 25); // Cannot fit empty extent provided as `geometry`\n            var extent = fromUserExtent(geometryOrExtent, this.getProjection());\n            geometry = polygonFromExtent(extent);\n        }\n        else if (geometryOrExtent.getType() === GeometryType.CIRCLE) {\n            var extent = fromUserExtent(geometryOrExtent.getExtent(), this.getProjection());\n            geometry = polygonFromExtent(extent);\n            geometry.rotate(this.getRotation(), getCenter(extent));\n        }\n        else {\n            var userProjection = getUserProjection();\n            if (userProjection) {\n                geometry = /** @type {import(\"./geom/SimpleGeometry.js\").default} */ (geometryOrExtent.clone().transform(userProjection, this.getProjection()));\n            }\n            else {\n                geometry = geometryOrExtent;\n            }\n        }\n        this.fitInternal(geometry, options);\n    };\n    /**\n     * @param {import(\"./geom/SimpleGeometry.js\").default} geometry The geometry.\n     * @param {FitOptions=} opt_options Options.\n     */\n    View.prototype.fitInternal = function (geometry, opt_options) {\n        var options = opt_options || {};\n        var size = options.size;\n        if (!size) {\n            size = this.getViewportSize_();\n        }\n        var padding = options.padding !== undefined ? options.padding : [0, 0, 0, 0];\n        var nearest = options.nearest !== undefined ? options.nearest : false;\n        var minResolution;\n        if (options.minResolution !== undefined) {\n            minResolution = options.minResolution;\n        }\n        else if (options.maxZoom !== undefined) {\n            minResolution = this.getResolutionForZoom(options.maxZoom);\n        }\n        else {\n            minResolution = 0;\n        }\n        var coords = geometry.getFlatCoordinates();\n        // calculate rotated extent\n        var rotation = this.getRotation();\n        var cosAngle = Math.cos(-rotation);\n        var sinAngle = Math.sin(-rotation);\n        var minRotX = +Infinity;\n        var minRotY = +Infinity;\n        var maxRotX = -Infinity;\n        var maxRotY = -Infinity;\n        var stride = geometry.getStride();\n        for (var i = 0, ii = coords.length; i < ii; i += stride) {\n            var rotX = coords[i] * cosAngle - coords[i + 1] * sinAngle;\n            var rotY = coords[i] * sinAngle + coords[i + 1] * cosAngle;\n            minRotX = Math.min(minRotX, rotX);\n            minRotY = Math.min(minRotY, rotY);\n            maxRotX = Math.max(maxRotX, rotX);\n            maxRotY = Math.max(maxRotY, rotY);\n        }\n        // calculate resolution\n        var resolution = this.getResolutionForExtentInternal([minRotX, minRotY, maxRotX, maxRotY], [size[0] - padding[1] - padding[3], size[1] - padding[0] - padding[2]]);\n        resolution = isNaN(resolution) ? minResolution :\n            Math.max(resolution, minResolution);\n        resolution = this.getConstrainedResolution(resolution, nearest ? 0 : 1);\n        // calculate center\n        sinAngle = -sinAngle; // go back to original rotation\n        var centerRotX = (minRotX + maxRotX) / 2;\n        var centerRotY = (minRotY + maxRotY) / 2;\n        centerRotX += (padding[1] - padding[3]) / 2 * resolution;\n        centerRotY += (padding[0] - padding[2]) / 2 * resolution;\n        var centerX = centerRotX * cosAngle - centerRotY * sinAngle;\n        var centerY = centerRotY * cosAngle + centerRotX * sinAngle;\n        var center = [centerX, centerY];\n        var callback = options.callback ? options.callback : VOID;\n        if (options.duration !== undefined) {\n            this.animateInternal({\n                resolution: resolution,\n                center: this.getConstrainedCenter(center, resolution),\n                duration: options.duration,\n                easing: options.easing\n            }, callback);\n        }\n        else {\n            this.targetResolution_ = resolution;\n            this.targetCenter_ = center;\n            this.applyTargetState_(false, true);\n            animationCallback(callback, true);\n        }\n    };\n    /**\n     * Center on coordinate and view position.\n     * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {import(\"./size.js\").Size} size Box pixel size.\n     * @param {import(\"./pixel.js\").Pixel} position Position on the view to center on.\n     * @api\n     */\n    View.prototype.centerOn = function (coordinate, size, position) {\n        this.centerOnInternal(fromUserCoordinate(coordinate, this.getProjection()), size, position);\n    };\n    /**\n     * @param {import(\"./coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {import(\"./size.js\").Size} size Box pixel size.\n     * @param {import(\"./pixel.js\").Pixel} position Position on the view to center on.\n     */\n    View.prototype.centerOnInternal = function (coordinate, size, position) {\n        // calculate rotated position\n        var rotation = this.getRotation();\n        var cosAngle = Math.cos(-rotation);\n        var sinAngle = Math.sin(-rotation);\n        var rotX = coordinate[0] * cosAngle - coordinate[1] * sinAngle;\n        var rotY = coordinate[1] * cosAngle + coordinate[0] * sinAngle;\n        var resolution = this.getResolution();\n        rotX += (size[0] / 2 - position[0]) * resolution;\n        rotY += (position[1] - size[1] / 2) * resolution;\n        // go back to original angle\n        sinAngle = -sinAngle; // go back to original rotation\n        var centerX = rotX * cosAngle - rotY * sinAngle;\n        var centerY = rotY * cosAngle + rotX * sinAngle;\n        this.setCenterInternal([centerX, centerY]);\n    };\n    /**\n     * @return {boolean} Is defined.\n     */\n    View.prototype.isDef = function () {\n        return !!this.getCenterInternal() && this.getResolution() !== undefined;\n    };\n    /**\n     * Adds relative coordinates to the center of the view. Any extent constraint will apply.\n     * @param {import(\"./coordinate.js\").Coordinate} deltaCoordinates Relative value to add.\n     * @api\n     */\n    View.prototype.adjustCenter = function (deltaCoordinates) {\n        var center = toUserCoordinate(this.targetCenter_, this.getProjection());\n        this.setCenter([center[0] + deltaCoordinates[0], center[1] + deltaCoordinates[1]]);\n    };\n    /**\n     * Adds relative coordinates to the center of the view. Any extent constraint will apply.\n     * @param {import(\"./coordinate.js\").Coordinate} deltaCoordinates Relative value to add.\n     */\n    View.prototype.adjustCenterInternal = function (deltaCoordinates) {\n        var center = this.targetCenter_;\n        this.setCenterInternal([center[0] + deltaCoordinates[0], center[1] + deltaCoordinates[1]]);\n    };\n    /**\n     * Multiply the view resolution by a ratio, optionally using an anchor. Any resolution\n     * constraint will apply.\n     * @param {number} ratio The ratio to apply on the view resolution.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     * @api\n     */\n    View.prototype.adjustResolution = function (ratio, opt_anchor) {\n        var anchor = opt_anchor && fromUserCoordinate(opt_anchor, this.getProjection());\n        this.adjustResolutionInternal(ratio, anchor);\n    };\n    /**\n     * Multiply the view resolution by a ratio, optionally using an anchor. Any resolution\n     * constraint will apply.\n     * @param {number} ratio The ratio to apply on the view resolution.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     */\n    View.prototype.adjustResolutionInternal = function (ratio, opt_anchor) {\n        var isMoving = this.getAnimating() || this.getInteracting();\n        var size = this.getViewportSize_(this.getRotation());\n        var newResolution = this.constraints_.resolution(this.targetResolution_ * ratio, 0, size, isMoving);\n        if (opt_anchor) {\n            this.targetCenter_ = this.calculateCenterZoom(newResolution, opt_anchor);\n        }\n        this.targetResolution_ *= ratio;\n        this.applyTargetState_();\n    };\n    /**\n     * Adds a value to the view zoom level, optionally using an anchor. Any resolution\n     * constraint will apply.\n     * @param {number} delta Relative value to add to the zoom level.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     * @api\n     */\n    View.prototype.adjustZoom = function (delta, opt_anchor) {\n        this.adjustResolution(Math.pow(this.zoomFactor_, -delta), opt_anchor);\n    };\n    /**\n     * Adds a value to the view rotation, optionally using an anchor. Any rotation\n     * constraint will apply.\n     * @param {number} delta Relative value to add to the zoom rotation, in radians.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The rotation center.\n     * @api\n     */\n    View.prototype.adjustRotation = function (delta, opt_anchor) {\n        if (opt_anchor) {\n            opt_anchor = fromUserCoordinate(opt_anchor, this.getProjection());\n        }\n        this.adjustRotationInternal(delta, opt_anchor);\n    };\n    /**\n     * @param {number} delta Relative value to add to the zoom rotation, in radians.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The rotation center.\n     */\n    View.prototype.adjustRotationInternal = function (delta, opt_anchor) {\n        var isMoving = this.getAnimating() || this.getInteracting();\n        var newRotation = this.constraints_.rotation(this.targetRotation_ + delta, isMoving);\n        if (opt_anchor) {\n            this.targetCenter_ = this.calculateCenterRotate(newRotation, opt_anchor);\n        }\n        this.targetRotation_ += delta;\n        this.applyTargetState_();\n    };\n    /**\n     * Set the center of the current view. Any extent constraint will apply.\n     * @param {import(\"./coordinate.js\").Coordinate|undefined} center The center of the view.\n     * @observable\n     * @api\n     */\n    View.prototype.setCenter = function (center) {\n        this.setCenterInternal(fromUserCoordinate(center, this.getProjection()));\n    };\n    /**\n     * Set the center using the view projection (not the user projection).\n     * @param {import(\"./coordinate.js\").Coordinate|undefined} center The center of the view.\n     */\n    View.prototype.setCenterInternal = function (center) {\n        this.targetCenter_ = center;\n        this.applyTargetState_();\n    };\n    /**\n     * @param {ViewHint} hint Hint.\n     * @param {number} delta Delta.\n     * @return {number} New value.\n     */\n    View.prototype.setHint = function (hint, delta) {\n        this.hints_[hint] += delta;\n        this.changed();\n        return this.hints_[hint];\n    };\n    /**\n     * Set the resolution for this view. Any resolution constraint will apply.\n     * @param {number|undefined} resolution The resolution of the view.\n     * @observable\n     * @api\n     */\n    View.prototype.setResolution = function (resolution) {\n        this.targetResolution_ = resolution;\n        this.applyTargetState_();\n    };\n    /**\n     * Set the rotation for this view. Any rotation constraint will apply.\n     * @param {number} rotation The rotation of the view in radians.\n     * @observable\n     * @api\n     */\n    View.prototype.setRotation = function (rotation) {\n        this.targetRotation_ = rotation;\n        this.applyTargetState_();\n    };\n    /**\n     * Zoom to a specific zoom level. Any resolution constrain will apply.\n     * @param {number} zoom Zoom level.\n     * @api\n     */\n    View.prototype.setZoom = function (zoom) {\n        this.setResolution(this.getResolutionForZoom(zoom));\n    };\n    /**\n     * Recompute rotation/resolution/center based on target values.\n     * Note: we have to compute rotation first, then resolution and center considering that\n     * parameters can influence one another in case a view extent constraint is present.\n     * @param {boolean=} opt_doNotCancelAnims Do not cancel animations.\n     * @param {boolean=} opt_forceMoving Apply constraints as if the view is moving.\n     * @private\n     */\n    View.prototype.applyTargetState_ = function (opt_doNotCancelAnims, opt_forceMoving) {\n        var isMoving = this.getAnimating() || this.getInteracting() || opt_forceMoving;\n        // compute rotation\n        var newRotation = this.constraints_.rotation(this.targetRotation_, isMoving);\n        var size = this.getViewportSize_(newRotation);\n        var newResolution = this.constraints_.resolution(this.targetResolution_, 0, size, isMoving);\n        var newCenter = this.constraints_.center(this.targetCenter_, newResolution, size, isMoving);\n        if (this.get(ViewProperty.ROTATION) !== newRotation) {\n            this.set(ViewProperty.ROTATION, newRotation);\n        }\n        if (this.get(ViewProperty.RESOLUTION) !== newResolution) {\n            this.set(ViewProperty.RESOLUTION, newResolution);\n        }\n        if (!this.get(ViewProperty.CENTER) || !equals(this.get(ViewProperty.CENTER), newCenter)) {\n            this.set(ViewProperty.CENTER, newCenter);\n        }\n        if (this.getAnimating() && !opt_doNotCancelAnims) {\n            this.cancelAnimations();\n        }\n        this.cancelAnchor_ = undefined;\n    };\n    /**\n     * If any constraints need to be applied, an animation will be triggered.\n     * This is typically done on interaction end.\n     * Note: calling this with a duration of 0 will apply the constrained values straight away,\n     * without animation.\n     * @param {number=} opt_duration The animation duration in ms.\n     * @param {number=} opt_resolutionDirection Which direction to zoom.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     */\n    View.prototype.resolveConstraints = function (opt_duration, opt_resolutionDirection, opt_anchor) {\n        var duration = opt_duration !== undefined ? opt_duration : 200;\n        var direction = opt_resolutionDirection || 0;\n        var newRotation = this.constraints_.rotation(this.targetRotation_);\n        var size = this.getViewportSize_(newRotation);\n        var newResolution = this.constraints_.resolution(this.targetResolution_, direction, size);\n        var newCenter = this.constraints_.center(this.targetCenter_, newResolution, size);\n        if (duration === 0 && !this.cancelAnchor_) {\n            this.targetResolution_ = newResolution;\n            this.targetRotation_ = newRotation;\n            this.targetCenter_ = newCenter;\n            this.applyTargetState_();\n            return;\n        }\n        var anchor = opt_anchor || (duration === 0 ? this.cancelAnchor_ : undefined);\n        this.cancelAnchor_ = undefined;\n        if (this.getResolution() !== newResolution ||\n            this.getRotation() !== newRotation ||\n            !this.getCenterInternal() ||\n            !equals(this.getCenterInternal(), newCenter)) {\n            if (this.getAnimating()) {\n                this.cancelAnimations();\n            }\n            this.animateInternal({\n                rotation: newRotation,\n                center: newCenter,\n                resolution: newResolution,\n                duration: duration,\n                easing: easeOut,\n                anchor: anchor\n            });\n        }\n    };\n    /**\n     * Notify the View that an interaction has started.\n     * The view state will be resolved to a stable one if needed\n     * (depending on its constraints).\n     * @api\n     */\n    View.prototype.beginInteraction = function () {\n        this.resolveConstraints(0);\n        this.setHint(ViewHint.INTERACTING, 1);\n    };\n    /**\n     * Notify the View that an interaction has ended. The view state will be resolved\n     * to a stable one if needed (depending on its constraints).\n     * @param {number=} opt_duration Animation duration in ms.\n     * @param {number=} opt_resolutionDirection Which direction to zoom.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     * @api\n     */\n    View.prototype.endInteraction = function (opt_duration, opt_resolutionDirection, opt_anchor) {\n        var anchor = opt_anchor && fromUserCoordinate(opt_anchor, this.getProjection());\n        this.endInteractionInternal(opt_duration, opt_resolutionDirection, anchor);\n    };\n    /**\n     * Notify the View that an interaction has ended. The view state will be resolved\n     * to a stable one if needed (depending on its constraints).\n     * @param {number=} opt_duration Animation duration in ms.\n     * @param {number=} opt_resolutionDirection Which direction to zoom.\n     * @param {import(\"./coordinate.js\").Coordinate=} opt_anchor The origin of the transformation.\n     */\n    View.prototype.endInteractionInternal = function (opt_duration, opt_resolutionDirection, opt_anchor) {\n        this.setHint(ViewHint.INTERACTING, -1);\n        this.resolveConstraints(opt_duration, opt_resolutionDirection, opt_anchor);\n    };\n    /**\n     * Get a valid position for the view center according to the current constraints.\n     * @param {import(\"./coordinate.js\").Coordinate|undefined} targetCenter Target center position.\n     * @param {number=} opt_targetResolution Target resolution. If not supplied, the current one will be used.\n     * This is useful to guess a valid center position at a different zoom level.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} Valid center position.\n     */\n    View.prototype.getConstrainedCenter = function (targetCenter, opt_targetResolution) {\n        var size = this.getViewportSize_(this.getRotation());\n        return this.constraints_.center(targetCenter, opt_targetResolution || this.getResolution(), size);\n    };\n    /**\n     * Get a valid zoom level according to the current view constraints.\n     * @param {number|undefined} targetZoom Target zoom.\n     * @param {number=} [opt_direction=0] Indicate which resolution should be used\n     * by a renderer if the view resolution does not match any resolution of the tile source.\n     * If 0, the nearest resolution will be used. If 1, the nearest lower resolution\n     * will be used. If -1, the nearest higher resolution will be used.\n     * @return {number|undefined} Valid zoom level.\n     */\n    View.prototype.getConstrainedZoom = function (targetZoom, opt_direction) {\n        var targetRes = this.getResolutionForZoom(targetZoom);\n        return this.getZoomForResolution(this.getConstrainedResolution(targetRes, opt_direction));\n    };\n    /**\n     * Get a valid resolution according to the current view constraints.\n     * @param {number|undefined} targetResolution Target resolution.\n     * @param {number=} [opt_direction=0] Indicate which resolution should be used\n     * by a renderer if the view resolution does not match any resolution of the tile source.\n     * If 0, the nearest resolution will be used. If 1, the nearest lower resolution\n     * will be used. If -1, the nearest higher resolution will be used.\n     * @return {number|undefined} Valid resolution.\n     */\n    View.prototype.getConstrainedResolution = function (targetResolution, opt_direction) {\n        var direction = opt_direction || 0;\n        var size = this.getViewportSize_(this.getRotation());\n        return this.constraints_.resolution(targetResolution, direction, size);\n    };\n    return View;\n}(BaseObject));\n/**\n * @param {Function} callback Callback.\n * @param {*} returnValue Return value.\n */\nfunction animationCallback(callback, returnValue) {\n    setTimeout(function () {\n        callback(returnValue);\n    }, 0);\n}\n/**\n * @param {ViewOptions} options View options.\n * @return {import(\"./centerconstraint.js\").Type} The constraint.\n */\nexport function createCenterConstraint(options) {\n    if (options.extent !== undefined) {\n        var smooth = options.smoothExtentConstraint !== undefined ? options.smoothExtentConstraint : true;\n        return createExtent(options.extent, options.constrainOnlyCenter, smooth);\n    }\n    var projection = createProjection(options.projection, 'EPSG:3857');\n    if (options.multiWorld !== true && projection.isGlobal()) {\n        var extent = projection.getExtent().slice();\n        extent[0] = -Infinity;\n        extent[2] = Infinity;\n        return createExtent(extent, false, false);\n    }\n    return centerNone;\n}\n/**\n * @param {ViewOptions} options View options.\n * @return {{constraint: import(\"./resolutionconstraint.js\").Type, maxResolution: number,\n *     minResolution: number, minZoom: number, zoomFactor: number}} The constraint.\n */\nexport function createResolutionConstraint(options) {\n    var resolutionConstraint;\n    var maxResolution;\n    var minResolution;\n    // TODO: move these to be ol constants\n    // see https://github.com/openlayers/openlayers/issues/2076\n    var defaultMaxZoom = 28;\n    var defaultZoomFactor = 2;\n    var minZoom = options.minZoom !== undefined ?\n        options.minZoom : DEFAULT_MIN_ZOOM;\n    var maxZoom = options.maxZoom !== undefined ?\n        options.maxZoom : defaultMaxZoom;\n    var zoomFactor = options.zoomFactor !== undefined ?\n        options.zoomFactor : defaultZoomFactor;\n    var multiWorld = options.multiWorld !== undefined ?\n        options.multiWorld : false;\n    var smooth = options.smoothResolutionConstraint !== undefined ? options.smoothResolutionConstraint : true;\n    var showFullExtent = options.showFullExtent !== undefined ? options.showFullExtent : false;\n    var projection = createProjection(options.projection, 'EPSG:3857');\n    var projExtent = projection.getExtent();\n    var constrainOnlyCenter = options.constrainOnlyCenter;\n    var extent = options.extent;\n    if (!multiWorld && !extent && projection.isGlobal()) {\n        constrainOnlyCenter = false;\n        extent = projExtent;\n    }\n    if (options.resolutions !== undefined) {\n        var resolutions = options.resolutions;\n        maxResolution = resolutions[minZoom];\n        minResolution = resolutions[maxZoom] !== undefined ?\n            resolutions[maxZoom] : resolutions[resolutions.length - 1];\n        if (options.constrainResolution) {\n            resolutionConstraint = createSnapToResolutions(resolutions, smooth, !constrainOnlyCenter && extent, showFullExtent);\n        }\n        else {\n            resolutionConstraint = createMinMaxResolution(maxResolution, minResolution, smooth, !constrainOnlyCenter && extent, showFullExtent);\n        }\n    }\n    else {\n        // calculate the default min and max resolution\n        var size = !projExtent ?\n            // use an extent that can fit the whole world if need be\n            360 * METERS_PER_UNIT[Units.DEGREES] /\n                projection.getMetersPerUnit() :\n            Math.max(getWidth(projExtent), getHeight(projExtent));\n        var defaultMaxResolution = size / DEFAULT_TILE_SIZE / Math.pow(defaultZoomFactor, DEFAULT_MIN_ZOOM);\n        var defaultMinResolution = defaultMaxResolution / Math.pow(defaultZoomFactor, defaultMaxZoom - DEFAULT_MIN_ZOOM);\n        // user provided maxResolution takes precedence\n        maxResolution = options.maxResolution;\n        if (maxResolution !== undefined) {\n            minZoom = 0;\n        }\n        else {\n            maxResolution = defaultMaxResolution / Math.pow(zoomFactor, minZoom);\n        }\n        // user provided minResolution takes precedence\n        minResolution = options.minResolution;\n        if (minResolution === undefined) {\n            if (options.maxZoom !== undefined) {\n                if (options.maxResolution !== undefined) {\n                    minResolution = maxResolution / Math.pow(zoomFactor, maxZoom);\n                }\n                else {\n                    minResolution = defaultMaxResolution / Math.pow(zoomFactor, maxZoom);\n                }\n            }\n            else {\n                minResolution = defaultMinResolution;\n            }\n        }\n        // given discrete zoom levels, minResolution may be different than provided\n        maxZoom = minZoom + Math.floor(Math.log(maxResolution / minResolution) / Math.log(zoomFactor));\n        minResolution = maxResolution / Math.pow(zoomFactor, maxZoom - minZoom);\n        if (options.constrainResolution) {\n            resolutionConstraint = createSnapToPower(zoomFactor, maxResolution, minResolution, smooth, !constrainOnlyCenter && extent, showFullExtent);\n        }\n        else {\n            resolutionConstraint = createMinMaxResolution(maxResolution, minResolution, smooth, !constrainOnlyCenter && extent, showFullExtent);\n        }\n    }\n    return { constraint: resolutionConstraint, maxResolution: maxResolution,\n        minResolution: minResolution, minZoom: minZoom, zoomFactor: zoomFactor };\n}\n/**\n * @param {ViewOptions} options View options.\n * @return {import(\"./rotationconstraint.js\").Type} Rotation constraint.\n */\nexport function createRotationConstraint(options) {\n    var enableRotation = options.enableRotation !== undefined ?\n        options.enableRotation : true;\n    if (enableRotation) {\n        var constrainRotation = options.constrainRotation;\n        if (constrainRotation === undefined || constrainRotation === true) {\n            return createSnapToZero();\n        }\n        else if (constrainRotation === false) {\n            return rotationNone;\n        }\n        else if (typeof constrainRotation === 'number') {\n            return createSnapToN(constrainRotation);\n        }\n        else {\n            return rotationNone;\n        }\n    }\n    else {\n        return disable;\n    }\n}\n/**\n * Determine if an animation involves no view change.\n * @param {Animation} animation The animation.\n * @return {boolean} The animation involves no view change.\n */\nexport function isNoopAnimation(animation) {\n    if (animation.sourceCenter && animation.targetCenter) {\n        if (!coordinatesEqual(animation.sourceCenter, animation.targetCenter)) {\n            return false;\n        }\n    }\n    if (animation.sourceResolution !== animation.targetResolution) {\n        return false;\n    }\n    if (animation.sourceRotation !== animation.targetRotation) {\n        return false;\n    }\n    return true;\n}\nexport default View;\n//# sourceMappingURL=View.js.map","/**\n * @module ol/tilegrid/common\n */\n/**\n * Default maximum zoom for default tile grids.\n * @type {number}\n */\nexport var DEFAULT_MAX_ZOOM = 42;\n/**\n * Default tile size.\n * @type {number}\n */\nexport var DEFAULT_TILE_SIZE = 256;\n//# sourceMappingURL=common.js.map","/**\n * @module ol/layer/Property\n */\n/**\n * @enum {string}\n */\nexport default {\n    OPACITY: 'opacity',\n    VISIBLE: 'visible',\n    EXTENT: 'extent',\n    Z_INDEX: 'zIndex',\n    MAX_RESOLUTION: 'maxResolution',\n    MIN_RESOLUTION: 'minResolution',\n    MAX_ZOOM: 'maxZoom',\n    MIN_ZOOM: 'minZoom',\n    SOURCE: 'source'\n};\n//# sourceMappingURL=Property.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/Base\n */\nimport { abstract } from '../util.js';\nimport BaseObject from '../Object.js';\nimport LayerProperty from './Property.js';\nimport { clamp } from '../math.js';\nimport { assign } from '../obj.js';\nimport { assert } from '../asserts.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-layer'] A CSS class name to set to the layer element.\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering.  The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering.  At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n */\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Note that with {@link module:ol/layer/Base} and all its subclasses, any property set in\n * the options is set as a {@link module:ol/Object} property on the layer object, so\n * is observable, and has get/set accessors.\n *\n * @api\n */\nvar BaseLayer = /** @class */ (function (_super) {\n    __extends(BaseLayer, _super);\n    /**\n     * @param {Options} options Layer options.\n     */\n    function BaseLayer(options) {\n        var _this = _super.call(this) || this;\n        /**\n         * @type {Object<string, *>}\n         */\n        var properties = assign({}, options);\n        properties[LayerProperty.OPACITY] =\n            options.opacity !== undefined ? options.opacity : 1;\n        assert(typeof properties[LayerProperty.OPACITY] === 'number', 64); // Layer opacity must be a number\n        properties[LayerProperty.VISIBLE] =\n            options.visible !== undefined ? options.visible : true;\n        properties[LayerProperty.Z_INDEX] = options.zIndex;\n        properties[LayerProperty.MAX_RESOLUTION] =\n            options.maxResolution !== undefined ? options.maxResolution : Infinity;\n        properties[LayerProperty.MIN_RESOLUTION] =\n            options.minResolution !== undefined ? options.minResolution : 0;\n        properties[LayerProperty.MIN_ZOOM] =\n            options.minZoom !== undefined ? options.minZoom : -Infinity;\n        properties[LayerProperty.MAX_ZOOM] =\n            options.maxZoom !== undefined ? options.maxZoom : Infinity;\n        /**\n         * @type {string}\n         * @private\n         */\n        _this.className_ = properties.className !== undefined ? options.className : 'ol-layer';\n        delete properties.className;\n        _this.setProperties(properties);\n        /**\n         * @type {import(\"./Layer.js\").State}\n         * @private\n         */\n        _this.state_ = null;\n        return _this;\n    }\n    /**\n     * @return {string} CSS class name.\n     */\n    BaseLayer.prototype.getClassName = function () {\n        return this.className_;\n    };\n    /**\n     * This method is not meant to be called by layers or layer renderers because the state\n     * is incorrect if the layer is included in a layer group.\n     *\n     * @param {boolean=} opt_managed Layer is managed.\n     * @return {import(\"./Layer.js\").State} Layer state.\n     */\n    BaseLayer.prototype.getLayerState = function (opt_managed) {\n        /** @type {import(\"./Layer.js\").State} */\n        var state = this.state_ || /** @type {?} */ ({\n            layer: this,\n            managed: opt_managed === undefined ? true : opt_managed\n        });\n        var zIndex = this.getZIndex();\n        state.opacity = clamp(Math.round(this.getOpacity() * 100) / 100, 0, 1);\n        state.sourceState = this.getSourceState();\n        state.visible = this.getVisible();\n        state.extent = this.getExtent();\n        state.zIndex = zIndex !== undefined ? zIndex : (state.managed === false ? Infinity : 0);\n        state.maxResolution = this.getMaxResolution();\n        state.minResolution = Math.max(this.getMinResolution(), 0);\n        state.minZoom = this.getMinZoom();\n        state.maxZoom = this.getMaxZoom();\n        this.state_ = state;\n        return state;\n    };\n    /**\n     * @abstract\n     * @param {Array<import(\"./Layer.js\").default>=} opt_array Array of layers (to be\n     *     modified in place).\n     * @return {Array<import(\"./Layer.js\").default>} Array of layers.\n     */\n    BaseLayer.prototype.getLayersArray = function (opt_array) {\n        return abstract();\n    };\n    /**\n     * @abstract\n     * @param {Array<import(\"./Layer.js\").State>=} opt_states Optional list of layer\n     *     states (to be modified in place).\n     * @return {Array<import(\"./Layer.js\").State>} List of layer states.\n     */\n    BaseLayer.prototype.getLayerStatesArray = function (opt_states) {\n        return abstract();\n    };\n    /**\n     * Return the {@link module:ol/extent~Extent extent} of the layer or `undefined` if it\n     * will be visible regardless of extent.\n     * @return {import(\"../extent.js\").Extent|undefined} The layer extent.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getExtent = function () {\n        return (\n        /** @type {import(\"../extent.js\").Extent|undefined} */ (this.get(LayerProperty.EXTENT)));\n    };\n    /**\n     * Return the maximum resolution of the layer.\n     * @return {number} The maximum resolution of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getMaxResolution = function () {\n        return /** @type {number} */ (this.get(LayerProperty.MAX_RESOLUTION));\n    };\n    /**\n     * Return the minimum resolution of the layer.\n     * @return {number} The minimum resolution of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getMinResolution = function () {\n        return /** @type {number} */ (this.get(LayerProperty.MIN_RESOLUTION));\n    };\n    /**\n     * Return the minimum zoom level of the layer.\n     * @return {number} The minimum zoom level of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getMinZoom = function () {\n        return /** @type {number} */ (this.get(LayerProperty.MIN_ZOOM));\n    };\n    /**\n     * Return the maximum zoom level of the layer.\n     * @return {number} The maximum zoom level of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getMaxZoom = function () {\n        return /** @type {number} */ (this.get(LayerProperty.MAX_ZOOM));\n    };\n    /**\n     * Return the opacity of the layer (between 0 and 1).\n     * @return {number} The opacity of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getOpacity = function () {\n        return /** @type {number} */ (this.get(LayerProperty.OPACITY));\n    };\n    /**\n     * @abstract\n     * @return {import(\"../source/State.js\").default} Source state.\n     */\n    BaseLayer.prototype.getSourceState = function () {\n        return abstract();\n    };\n    /**\n     * Return the visibility of the layer (`true` or `false`).\n     * @return {boolean} The visibility of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getVisible = function () {\n        return /** @type {boolean} */ (this.get(LayerProperty.VISIBLE));\n    };\n    /**\n     * Return the Z-index of the layer, which is used to order layers before\n     * rendering. The default Z-index is 0.\n     * @return {number} The Z-index of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.getZIndex = function () {\n        return /** @type {number} */ (this.get(LayerProperty.Z_INDEX));\n    };\n    /**\n     * Set the extent at which the layer is visible.  If `undefined`, the layer\n     * will be visible at all extents.\n     * @param {import(\"../extent.js\").Extent|undefined} extent The extent of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setExtent = function (extent) {\n        this.set(LayerProperty.EXTENT, extent);\n    };\n    /**\n     * Set the maximum resolution at which the layer is visible.\n     * @param {number} maxResolution The maximum resolution of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setMaxResolution = function (maxResolution) {\n        this.set(LayerProperty.MAX_RESOLUTION, maxResolution);\n    };\n    /**\n     * Set the minimum resolution at which the layer is visible.\n     * @param {number} minResolution The minimum resolution of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setMinResolution = function (minResolution) {\n        this.set(LayerProperty.MIN_RESOLUTION, minResolution);\n    };\n    /**\n     * Set the maximum zoom (exclusive) at which the layer is visible.\n     * Note that the zoom levels for layer visibility are based on the\n     * view zoom level, which may be different from a tile source zoom level.\n     * @param {number} maxZoom The maximum zoom of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setMaxZoom = function (maxZoom) {\n        this.set(LayerProperty.MAX_ZOOM, maxZoom);\n    };\n    /**\n     * Set the minimum zoom (inclusive) at which the layer is visible.\n     * Note that the zoom levels for layer visibility are based on the\n     * view zoom level, which may be different from a tile source zoom level.\n     * @param {number} minZoom The minimum zoom of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setMinZoom = function (minZoom) {\n        this.set(LayerProperty.MIN_ZOOM, minZoom);\n    };\n    /**\n     * Set the opacity of the layer, allowed values range from 0 to 1.\n     * @param {number} opacity The opacity of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setOpacity = function (opacity) {\n        assert(typeof opacity === 'number', 64); // Layer opacity must be a number\n        this.set(LayerProperty.OPACITY, opacity);\n    };\n    /**\n     * Set the visibility of the layer (`true` or `false`).\n     * @param {boolean} visible The visibility of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setVisible = function (visible) {\n        this.set(LayerProperty.VISIBLE, visible);\n    };\n    /**\n     * Set Z-index of the layer, which is used to order layers before rendering.\n     * The default Z-index is 0.\n     * @param {number} zindex The z-index of the layer.\n     * @observable\n     * @api\n     */\n    BaseLayer.prototype.setZIndex = function (zindex) {\n        this.set(LayerProperty.Z_INDEX, zindex);\n    };\n    /**\n     * @inheritDoc\n     */\n    BaseLayer.prototype.disposeInternal = function () {\n        if (this.state_) {\n            this.state_.layer = null;\n            this.state_ = null;\n        }\n        _super.prototype.disposeInternal.call(this);\n    };\n    return BaseLayer;\n}(BaseObject));\nexport default BaseLayer;\n//# sourceMappingURL=Base.js.map","/**\n * @module ol/source/State\n */\n/**\n * @enum {string}\n * State of the source, one of 'undefined', 'loading', 'ready' or 'error'.\n */\nexport default {\n    UNDEFINED: 'undefined',\n    LOADING: 'loading',\n    READY: 'ready',\n    ERROR: 'error'\n};\n//# sourceMappingURL=State.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/Group\n */\nimport { getUid } from '../util.js';\nimport Collection from '../Collection.js';\nimport CollectionEventType from '../CollectionEventType.js';\nimport { getChangeEventType } from '../Object.js';\nimport ObjectEventType from '../ObjectEventType.js';\nimport { assert } from '../asserts.js';\nimport { listen, unlistenByKey } from '../events.js';\nimport EventType from '../events/EventType.js';\nimport { getIntersection } from '../extent.js';\nimport BaseLayer from './Base.js';\nimport { assign, clear } from '../obj.js';\nimport SourceState from '../source/State.js';\n/**\n * @typedef {Object} Options\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering.  The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering.  At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n * @property {Array<import(\"./Base.js\").default>|import(\"../Collection.js\").default<import(\"./Base.js\").default>} [layers] Child layers.\n */\n/**\n * @enum {string}\n * @private\n */\nvar Property = {\n    LAYERS: 'layers'\n};\n/**\n * @classdesc\n * A {@link module:ol/Collection~Collection} of layers that are handled together.\n *\n * A generic `change` event is triggered when the group/Collection changes.\n *\n * @api\n */\nvar LayerGroup = /** @class */ (function (_super) {\n    __extends(LayerGroup, _super);\n    /**\n     * @param {Options=} opt_options Layer options.\n     */\n    function LayerGroup(opt_options) {\n        var _this = this;\n        var options = opt_options || {};\n        var baseOptions = /** @type {Options} */ (assign({}, options));\n        delete baseOptions.layers;\n        var layers = options.layers;\n        _this = _super.call(this, baseOptions) || this;\n        /**\n         * @private\n         * @type {Array<import(\"../events.js\").EventsKey>}\n         */\n        _this.layersListenerKeys_ = [];\n        /**\n         * @private\n         * @type {Object<string, Array<import(\"../events.js\").EventsKey>>}\n         */\n        _this.listenerKeys_ = {};\n        _this.addEventListener(getChangeEventType(Property.LAYERS), _this.handleLayersChanged_);\n        if (layers) {\n            if (Array.isArray(layers)) {\n                layers = new Collection(layers.slice(), { unique: true });\n            }\n            else {\n                assert(typeof /** @type {?} */ (layers).getArray === 'function', 43); // Expected `layers` to be an array or a `Collection`\n            }\n        }\n        else {\n            layers = new Collection(undefined, { unique: true });\n        }\n        _this.setLayers(layers);\n        return _this;\n    }\n    /**\n     * @private\n     */\n    LayerGroup.prototype.handleLayerChange_ = function () {\n        this.changed();\n    };\n    /**\n     * @private\n     */\n    LayerGroup.prototype.handleLayersChanged_ = function () {\n        this.layersListenerKeys_.forEach(unlistenByKey);\n        this.layersListenerKeys_.length = 0;\n        var layers = this.getLayers();\n        this.layersListenerKeys_.push(listen(layers, CollectionEventType.ADD, this.handleLayersAdd_, this), listen(layers, CollectionEventType.REMOVE, this.handleLayersRemove_, this));\n        for (var id in this.listenerKeys_) {\n            this.listenerKeys_[id].forEach(unlistenByKey);\n        }\n        clear(this.listenerKeys_);\n        var layersArray = layers.getArray();\n        for (var i = 0, ii = layersArray.length; i < ii; i++) {\n            var layer = layersArray[i];\n            this.listenerKeys_[getUid(layer)] = [\n                listen(layer, ObjectEventType.PROPERTYCHANGE, this.handleLayerChange_, this),\n                listen(layer, EventType.CHANGE, this.handleLayerChange_, this)\n            ];\n        }\n        this.changed();\n    };\n    /**\n     * @param {import(\"../Collection.js\").CollectionEvent} collectionEvent CollectionEvent.\n     * @private\n     */\n    LayerGroup.prototype.handleLayersAdd_ = function (collectionEvent) {\n        var layer = /** @type {import(\"./Base.js\").default} */ (collectionEvent.element);\n        this.listenerKeys_[getUid(layer)] = [\n            listen(layer, ObjectEventType.PROPERTYCHANGE, this.handleLayerChange_, this),\n            listen(layer, EventType.CHANGE, this.handleLayerChange_, this)\n        ];\n        this.changed();\n    };\n    /**\n     * @param {import(\"../Collection.js\").CollectionEvent} collectionEvent CollectionEvent.\n     * @private\n     */\n    LayerGroup.prototype.handleLayersRemove_ = function (collectionEvent) {\n        var layer = /** @type {import(\"./Base.js\").default} */ (collectionEvent.element);\n        var key = getUid(layer);\n        this.listenerKeys_[key].forEach(unlistenByKey);\n        delete this.listenerKeys_[key];\n        this.changed();\n    };\n    /**\n     * Returns the {@link module:ol/Collection collection} of {@link module:ol/layer/Layer~Layer layers}\n     * in this group.\n     * @return {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} Collection of\n     *   {@link module:ol/layer/Base layers} that are part of this group.\n     * @observable\n     * @api\n     */\n    LayerGroup.prototype.getLayers = function () {\n        return (\n        /** @type {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} */ (this.get(Property.LAYERS)));\n    };\n    /**\n     * Set the {@link module:ol/Collection collection} of {@link module:ol/layer/Layer~Layer layers}\n     * in this group.\n     * @param {!import(\"../Collection.js\").default<import(\"./Base.js\").default>} layers Collection of\n     *   {@link module:ol/layer/Base layers} that are part of this group.\n     * @observable\n     * @api\n     */\n    LayerGroup.prototype.setLayers = function (layers) {\n        this.set(Property.LAYERS, layers);\n    };\n    /**\n     * @inheritDoc\n     */\n    LayerGroup.prototype.getLayersArray = function (opt_array) {\n        var array = opt_array !== undefined ? opt_array : [];\n        this.getLayers().forEach(function (layer) {\n            layer.getLayersArray(array);\n        });\n        return array;\n    };\n    /**\n     * @inheritDoc\n     */\n    LayerGroup.prototype.getLayerStatesArray = function (opt_states) {\n        var states = opt_states !== undefined ? opt_states : [];\n        var pos = states.length;\n        this.getLayers().forEach(function (layer) {\n            layer.getLayerStatesArray(states);\n        });\n        var ownLayerState = this.getLayerState();\n        for (var i = pos, ii = states.length; i < ii; i++) {\n            var layerState = states[i];\n            layerState.opacity *= ownLayerState.opacity;\n            layerState.visible = layerState.visible && ownLayerState.visible;\n            layerState.maxResolution = Math.min(layerState.maxResolution, ownLayerState.maxResolution);\n            layerState.minResolution = Math.max(layerState.minResolution, ownLayerState.minResolution);\n            layerState.minZoom = Math.max(layerState.minZoom, ownLayerState.minZoom);\n            layerState.maxZoom = Math.min(layerState.maxZoom, ownLayerState.maxZoom);\n            if (ownLayerState.extent !== undefined) {\n                if (layerState.extent !== undefined) {\n                    layerState.extent = getIntersection(layerState.extent, ownLayerState.extent);\n                }\n                else {\n                    layerState.extent = ownLayerState.extent;\n                }\n            }\n        }\n        return states;\n    };\n    /**\n     * @inheritDoc\n     */\n    LayerGroup.prototype.getSourceState = function () {\n        return SourceState.READY;\n    };\n    return LayerGroup;\n}(BaseLayer));\nexport default LayerGroup;\n//# sourceMappingURL=Group.js.map","/**\n * @module ol/size\n */\n/**\n * An array of numbers representing a size: `[width, height]`.\n * @typedef {Array<number>} Size\n * @api\n */\n/**\n * Returns a buffered size.\n * @param {Size} size Size.\n * @param {number} num The amount by which to buffer.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} The buffered size.\n */\nexport function buffer(size, num, opt_size) {\n    if (opt_size === undefined) {\n        opt_size = [0, 0];\n    }\n    opt_size[0] = size[0] + 2 * num;\n    opt_size[1] = size[1] + 2 * num;\n    return opt_size;\n}\n/**\n * Determines if a size has a positive area.\n * @param {Size} size The size to test.\n * @return {boolean} The size has a positive area.\n */\nexport function hasArea(size) {\n    return size[0] > 0 && size[1] > 0;\n}\n/**\n * Returns a size scaled by a ratio. The result will be an array of integers.\n * @param {Size} size Size.\n * @param {number} ratio Ratio.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} The scaled size.\n */\nexport function scale(size, ratio, opt_size) {\n    if (opt_size === undefined) {\n        opt_size = [0, 0];\n    }\n    opt_size[0] = (size[0] * ratio + 0.5) | 0;\n    opt_size[1] = (size[1] * ratio + 0.5) | 0;\n    return opt_size;\n}\n/**\n * Returns an `Size` array for the passed in number (meaning: square) or\n * `Size` array.\n * (meaning: non-square),\n * @param {number|Size} size Width and height.\n * @param {Size=} opt_size Optional reusable size array.\n * @return {Size} Size.\n * @api\n */\nexport function toSize(size, opt_size) {\n    if (Array.isArray(size)) {\n        return size;\n    }\n    else {\n        if (opt_size === undefined) {\n            opt_size = [size, size];\n        }\n        else {\n            opt_size[0] = size;\n            opt_size[1] = size;\n        }\n        return opt_size;\n    }\n}\n//# sourceMappingURL=size.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/PluggableMap\n */\nimport Collection from './Collection.js';\nimport CollectionEventType from './CollectionEventType.js';\nimport MapBrowserEvent from './MapBrowserEvent.js';\nimport MapBrowserEventHandler from './MapBrowserEventHandler.js';\nimport MapBrowserEventType from './MapBrowserEventType.js';\nimport MapEvent from './MapEvent.js';\nimport MapEventType from './MapEventType.js';\nimport MapProperty from './MapProperty.js';\nimport RenderEventType from './render/EventType.js';\nimport BaseObject, { getChangeEventType } from './Object.js';\nimport ObjectEventType from './ObjectEventType.js';\nimport TileQueue, { getTilePriority } from './TileQueue.js';\nimport View from './View.js';\nimport ViewHint from './ViewHint.js';\nimport { assert } from './asserts.js';\nimport { removeNode } from './dom.js';\nimport { listen, unlistenByKey } from './events.js';\nimport EventType from './events/EventType.js';\nimport { clone, createOrUpdateEmpty, equals, getForViewAndSize, isEmpty } from './extent.js';\nimport { TRUE } from './functions.js';\nimport { DEVICE_PIXEL_RATIO, IMAGE_DECODE, PASSIVE_EVENT_LISTENERS } from './has.js';\nimport LayerGroup from './layer/Group.js';\nimport { hasArea } from './size.js';\nimport { create as createTransform, apply as applyTransform } from './transform.js';\nimport { toUserCoordinate, fromUserCoordinate } from './proj.js';\n/**\n * State of the current frame. Only `pixelRatio`, `time` and `viewState` should\n * be used in applications.\n * @typedef {Object} FrameState\n * @property {number} pixelRatio The pixel ratio of the frame.\n * @property {number} time The time when rendering of the frame was requested.\n * @property {import(\"./View.js\").State} viewState The state of the current view.\n * @property {boolean} animate\n * @property {import(\"./transform.js\").Transform} coordinateToPixelTransform\n * @property {null|import(\"./extent.js\").Extent} extent\n * @property {Array<DeclutterItems>} declutterItems\n * @property {number} index\n * @property {Array<import(\"./layer/Layer.js\").State>} layerStatesArray\n * @property {number} layerIndex\n * @property {import(\"./transform.js\").Transform} pixelToCoordinateTransform\n * @property {Array<PostRenderFunction>} postRenderFunctions\n * @property {import(\"./size.js\").Size} size\n * @property {TileQueue} tileQueue\n * @property {!Object<string, Object<string, boolean>>} usedTiles\n * @property {Array<number>} viewHints\n * @property {!Object<string, Object<string, boolean>>} wantedTiles\n */\n/**\n * @typedef {Object} DeclutterItems\n * @property {Array<*>} items Declutter items of an executor.\n * @property {number} opacity Layer opacity.\n */\n/**\n * @typedef {function(PluggableMap, ?FrameState): any} PostRenderFunction\n */\n/**\n * @typedef {Object} AtPixelOptions\n * @property {undefined|function(import(\"./layer/Layer.js\").default): boolean} [layerFilter] Layer filter\n * function. The filter function will receive one argument, the\n * {@link module:ol/layer/Layer layer-candidate} and it should return a boolean value.\n * Only layers which are visible and for which this function returns `true`\n * will be tested for features. By default, all visible layers will be tested.\n * @property {number} [hitTolerance=0] Hit-detection tolerance in pixels. Pixels\n * inside the radius around the given position will be checked for features.\n * @property {boolean} [checkWrapped=true] Check-Wrapped Will check for for wrapped geometries inside the range of\n *   +/- 1 world width. Works only if a projection is used that can be wrapped.\n */\n/**\n * @typedef {Object} MapOptionsInternal\n * @property {Collection<import(\"./control/Control.js\").default>} [controls]\n * @property {Collection<import(\"./interaction/Interaction.js\").default>} [interactions]\n * @property {HTMLElement|Document} keyboardEventTarget\n * @property {Collection<import(\"./Overlay.js\").default>} overlays\n * @property {Object<string, *>} values\n */\n/**\n * Object literal with config options for the map.\n * @typedef {Object} MapOptions\n * @property {Collection<import(\"./control/Control.js\").default>|Array<import(\"./control/Control.js\").default>} [controls]\n * Controls initially added to the map. If not specified,\n * {@link module:ol/control~defaults} is used.\n * @property {number} [pixelRatio=window.devicePixelRatio] The ratio between\n * physical pixels and device-independent pixels (dips) on the device.\n * @property {Collection<import(\"./interaction/Interaction.js\").default>|Array<import(\"./interaction/Interaction.js\").default>} [interactions]\n * Interactions that are initially added to the map. If not specified,\n * {@link module:ol/interaction~defaults} is used.\n * @property {HTMLElement|Document|string} [keyboardEventTarget] The element to\n * listen to keyboard events on. This determines when the `KeyboardPan` and\n * `KeyboardZoom` interactions trigger. For example, if this option is set to\n * `document` the keyboard interactions will always trigger. If this option is\n * not specified, the element the library listens to keyboard events on is the\n * map target (i.e. the user-provided div for the map). If this is not\n * `document`, the target element needs to be focused for key events to be\n * emitted, requiring that the target element has a `tabindex` attribute.\n * @property {Array<import(\"./layer/Base.js\").default>|Collection<import(\"./layer/Base.js\").default>|LayerGroup} [layers]\n * Layers. If this is not defined, a map with no layers will be rendered. Note\n * that layers are rendered in the order supplied, so if you want, for example,\n * a vector layer to appear on top of a tile layer, it must come after the tile\n * layer.\n * @property {number} [maxTilesLoading=16] Maximum number tiles to load\n * simultaneously.\n * @property {number} [moveTolerance=1] The minimum distance in pixels the\n * cursor must move to be detected as a map move event instead of a click.\n * Increasing this value can make it easier to click on the map.\n * @property {Collection<import(\"./Overlay.js\").default>|Array<import(\"./Overlay.js\").default>} [overlays]\n * Overlays initially added to the map. By default, no overlays are added.\n * @property {HTMLElement|string} [target] The container for the map, either the\n * element itself or the `id` of the element. If not specified at construction\n * time, {@link module:ol/Map~Map#setTarget} must be called for the map to be\n * rendered.\n * @property {View} [view] The map's view.  No layer sources will be\n * fetched unless this is specified at construction time or through\n * {@link module:ol/Map~Map#setView}.\n */\n/**\n * @fires import(\"./MapBrowserEvent.js\").MapBrowserEvent\n * @fires import(\"./MapEvent.js\").MapEvent\n * @fires import(\"./render/Event.js\").default#precompose\n * @fires import(\"./render/Event.js\").default#postcompose\n * @fires import(\"./render/Event.js\").default#rendercomplete\n * @api\n */\nvar PluggableMap = /** @class */ (function (_super) {\n    __extends(PluggableMap, _super);\n    /**\n     * @param {MapOptions} options Map options.\n     */\n    function PluggableMap(options) {\n        var _this = _super.call(this) || this;\n        var optionsInternal = createOptionsInternal(options);\n        /** @private */\n        _this.boundHandleBrowserEvent_ = _this.handleBrowserEvent.bind(_this);\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.maxTilesLoading_ = options.maxTilesLoading !== undefined ? options.maxTilesLoading : 16;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.pixelRatio_ = options.pixelRatio !== undefined ?\n            options.pixelRatio : DEVICE_PIXEL_RATIO;\n        /**\n         * @private\n         * @type {*}\n         */\n        _this.postRenderTimeoutHandle_;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.animationDelayKey_;\n        /**\n         * @private\n         */\n        _this.animationDelay_ = function () {\n            this.animationDelayKey_ = undefined;\n            this.renderFrame_(Date.now());\n        }.bind(_this);\n        /**\n         * @private\n         * @type {import(\"./transform.js\").Transform}\n         */\n        _this.coordinateToPixelTransform_ = createTransform();\n        /**\n         * @private\n         * @type {import(\"./transform.js\").Transform}\n         */\n        _this.pixelToCoordinateTransform_ = createTransform();\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.frameIndex_ = 0;\n        /**\n         * @private\n         * @type {?FrameState}\n         */\n        _this.frameState_ = null;\n        /**\n         * The extent at the previous 'moveend' event.\n         * @private\n         * @type {import(\"./extent.js\").Extent}\n         */\n        _this.previousExtent_ = null;\n        /**\n         * @private\n         * @type {?import(\"./events.js\").EventsKey}\n         */\n        _this.viewPropertyListenerKey_ = null;\n        /**\n         * @private\n         * @type {?import(\"./events.js\").EventsKey}\n         */\n        _this.viewChangeListenerKey_ = null;\n        /**\n         * @private\n         * @type {?Array<import(\"./events.js\").EventsKey>}\n         */\n        _this.layerGroupPropertyListenerKeys_ = null;\n        /**\n         * @private\n         * @type {!HTMLElement}\n         */\n        _this.viewport_ = document.createElement('div');\n        _this.viewport_.className = 'ol-viewport' + ('ontouchstart' in window ? ' ol-touch' : '');\n        _this.viewport_.style.position = 'relative';\n        _this.viewport_.style.overflow = 'hidden';\n        _this.viewport_.style.width = '100%';\n        _this.viewport_.style.height = '100%';\n        /**\n         * @private\n         * @type {!HTMLElement}\n         */\n        _this.overlayContainer_ = document.createElement('div');\n        _this.overlayContainer_.style.position = 'absolute';\n        _this.overlayContainer_.style.zIndex = '0';\n        _this.overlayContainer_.style.width = '100%';\n        _this.overlayContainer_.style.height = '100%';\n        _this.overlayContainer_.className = 'ol-overlaycontainer';\n        _this.viewport_.appendChild(_this.overlayContainer_);\n        /**\n         * @private\n         * @type {!HTMLElement}\n         */\n        _this.overlayContainerStopEvent_ = document.createElement('div');\n        _this.overlayContainerStopEvent_.style.position = 'absolute';\n        _this.overlayContainerStopEvent_.style.zIndex = '0';\n        _this.overlayContainerStopEvent_.style.width = '100%';\n        _this.overlayContainerStopEvent_.style.height = '100%';\n        _this.overlayContainerStopEvent_.className = 'ol-overlaycontainer-stopevent';\n        _this.viewport_.appendChild(_this.overlayContainerStopEvent_);\n        /**\n         * @private\n         * @type {MapBrowserEventHandler}\n         */\n        _this.mapBrowserEventHandler_ = new MapBrowserEventHandler(_this, options.moveTolerance);\n        var handleMapBrowserEvent = _this.handleMapBrowserEvent.bind(_this);\n        for (var key in MapBrowserEventType) {\n            _this.mapBrowserEventHandler_.addEventListener(MapBrowserEventType[key], handleMapBrowserEvent);\n        }\n        /**\n         * @private\n         * @type {HTMLElement|Document}\n         */\n        _this.keyboardEventTarget_ = optionsInternal.keyboardEventTarget;\n        /**\n         * @private\n         * @type {?Array<import(\"./events.js\").EventsKey>}\n         */\n        _this.keyHandlerKeys_ = null;\n        var handleBrowserEvent = _this.handleBrowserEvent.bind(_this);\n        _this.viewport_.addEventListener(EventType.CONTEXTMENU, handleBrowserEvent, false);\n        _this.viewport_.addEventListener(EventType.WHEEL, handleBrowserEvent, PASSIVE_EVENT_LISTENERS ? { passive: false } : false);\n        /**\n         * @type {Collection<import(\"./control/Control.js\").default>}\n         * @protected\n         */\n        _this.controls = optionsInternal.controls || new Collection();\n        /**\n         * @type {Collection<import(\"./interaction/Interaction.js\").default>}\n         * @protected\n         */\n        _this.interactions = optionsInternal.interactions || new Collection();\n        /**\n         * @type {Collection<import(\"./Overlay.js\").default>}\n         * @private\n         */\n        _this.overlays_ = optionsInternal.overlays;\n        /**\n         * A lookup of overlays by id.\n         * @private\n         * @type {Object<string, import(\"./Overlay.js\").default>}\n         */\n        _this.overlayIdIndex_ = {};\n        /**\n         * @type {import(\"./renderer/Map.js\").default}\n         * @private\n         */\n        _this.renderer_ = null;\n        /**\n         * @type {undefined|function(Event): void}\n         * @private\n         */\n        _this.handleResize_;\n        /**\n         * @private\n         * @type {!Array<PostRenderFunction>}\n         */\n        _this.postRenderFunctions_ = [];\n        /**\n         * @private\n         * @type {TileQueue}\n         */\n        _this.tileQueue_ = new TileQueue(_this.getTilePriority.bind(_this), _this.handleTileChange_.bind(_this));\n        _this.addEventListener(getChangeEventType(MapProperty.LAYERGROUP), _this.handleLayerGroupChanged_);\n        _this.addEventListener(getChangeEventType(MapProperty.VIEW), _this.handleViewChanged_);\n        _this.addEventListener(getChangeEventType(MapProperty.SIZE), _this.handleSizeChanged_);\n        _this.addEventListener(getChangeEventType(MapProperty.TARGET), _this.handleTargetChanged_);\n        // setProperties will trigger the rendering of the map if the map\n        // is \"defined\" already.\n        _this.setProperties(optionsInternal.values);\n        _this.controls.forEach(\n        /**\n         * @param {import(\"./control/Control.js\").default} control Control.\n         * @this {PluggableMap}\n         */\n        function (control) {\n            control.setMap(this);\n        }.bind(_this));\n        _this.controls.addEventListener(CollectionEventType.ADD, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            event.element.setMap(this);\n        }.bind(_this));\n        _this.controls.addEventListener(CollectionEventType.REMOVE, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            event.element.setMap(null);\n        }.bind(_this));\n        _this.interactions.forEach(\n        /**\n         * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction.\n         * @this {PluggableMap}\n         */\n        function (interaction) {\n            interaction.setMap(this);\n        }.bind(_this));\n        _this.interactions.addEventListener(CollectionEventType.ADD, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            event.element.setMap(this);\n        }.bind(_this));\n        _this.interactions.addEventListener(CollectionEventType.REMOVE, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            event.element.setMap(null);\n        }.bind(_this));\n        _this.overlays_.forEach(_this.addOverlayInternal_.bind(_this));\n        _this.overlays_.addEventListener(CollectionEventType.ADD, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            this.addOverlayInternal_(/** @type {import(\"./Overlay.js\").default} */ (event.element));\n        }.bind(_this));\n        _this.overlays_.addEventListener(CollectionEventType.REMOVE, \n        /**\n         * @param {import(\"./Collection.js\").CollectionEvent} event CollectionEvent.\n         */\n        function (event) {\n            var overlay = /** @type {import(\"./Overlay.js\").default} */ (event.element);\n            var id = overlay.getId();\n            if (id !== undefined) {\n                delete this.overlayIdIndex_[id.toString()];\n            }\n            event.element.setMap(null);\n        }.bind(_this));\n        return _this;\n    }\n    /**\n     * @abstract\n     * @return {import(\"./renderer/Map.js\").default} The map renderer\n     */\n    PluggableMap.prototype.createRenderer = function () {\n        throw new Error('Use a map type that has a createRenderer method');\n    };\n    /**\n     * Add the given control to the map.\n     * @param {import(\"./control/Control.js\").default} control Control.\n     * @api\n     */\n    PluggableMap.prototype.addControl = function (control) {\n        this.getControls().push(control);\n    };\n    /**\n     * Add the given interaction to the map. If you want to add an interaction\n     * at another point of the collection use `getInteraction()` and the methods\n     * available on {@link module:ol/Collection~Collection}. This can be used to\n     * stop the event propagation from the handleEvent function. The interactions\n     * get to handle the events in the reverse order of this collection.\n     * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction to add.\n     * @api\n     */\n    PluggableMap.prototype.addInteraction = function (interaction) {\n        this.getInteractions().push(interaction);\n    };\n    /**\n     * Adds the given layer to the top of this map. If you want to add a layer\n     * elsewhere in the stack, use `getLayers()` and the methods available on\n     * {@link module:ol/Collection~Collection}.\n     * @param {import(\"./layer/Base.js\").default} layer Layer.\n     * @api\n     */\n    PluggableMap.prototype.addLayer = function (layer) {\n        var layers = this.getLayerGroup().getLayers();\n        layers.push(layer);\n    };\n    /**\n     * Add the given overlay to the map.\n     * @param {import(\"./Overlay.js\").default} overlay Overlay.\n     * @api\n     */\n    PluggableMap.prototype.addOverlay = function (overlay) {\n        this.getOverlays().push(overlay);\n    };\n    /**\n     * This deals with map's overlay collection changes.\n     * @param {import(\"./Overlay.js\").default} overlay Overlay.\n     * @private\n     */\n    PluggableMap.prototype.addOverlayInternal_ = function (overlay) {\n        var id = overlay.getId();\n        if (id !== undefined) {\n            this.overlayIdIndex_[id.toString()] = overlay;\n        }\n        overlay.setMap(this);\n    };\n    /**\n     *\n     * @inheritDoc\n     */\n    PluggableMap.prototype.disposeInternal = function () {\n        this.mapBrowserEventHandler_.dispose();\n        this.viewport_.removeEventListener(EventType.CONTEXTMENU, this.boundHandleBrowserEvent_);\n        this.viewport_.removeEventListener(EventType.WHEEL, this.boundHandleBrowserEvent_);\n        if (this.handleResize_ !== undefined) {\n            removeEventListener(EventType.RESIZE, this.handleResize_, false);\n            this.handleResize_ = undefined;\n        }\n        this.setTarget(null);\n        _super.prototype.disposeInternal.call(this);\n    };\n    /**\n     * Detect features that intersect a pixel on the viewport, and execute a\n     * callback with each intersecting feature. Layers included in the detection can\n     * be configured through the `layerFilter` option in `opt_options`.\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n     * @param {function(this: S, import(\"./Feature.js\").FeatureLike,\n     *     import(\"./layer/Layer.js\").default): T} callback Feature callback. The callback will be\n     *     called with two arguments. The first argument is one\n     *     {@link module:ol/Feature feature} or\n     *     {@link module:ol/render/Feature render feature} at the pixel, the second is\n     *     the {@link module:ol/layer/Layer layer} of the feature and will be null for\n     *     unmanaged layers. To stop detection, callback functions can return a\n     *     truthy value.\n     * @param {AtPixelOptions=} opt_options Optional options.\n     * @return {T|undefined} Callback result, i.e. the return value of last\n     * callback execution, or the first truthy callback return value.\n     * @template S,T\n     * @api\n     */\n    PluggableMap.prototype.forEachFeatureAtPixel = function (pixel, callback, opt_options) {\n        if (!this.frameState_) {\n            return;\n        }\n        var coordinate = this.getCoordinateFromPixelInternal(pixel);\n        opt_options = opt_options !== undefined ? opt_options : {};\n        var hitTolerance = opt_options.hitTolerance !== undefined ?\n            opt_options.hitTolerance * this.frameState_.pixelRatio : 0;\n        var layerFilter = opt_options.layerFilter !== undefined ?\n            opt_options.layerFilter : TRUE;\n        var checkWrapped = opt_options.checkWrapped !== false;\n        return this.renderer_.forEachFeatureAtCoordinate(coordinate, this.frameState_, hitTolerance, checkWrapped, callback, null, layerFilter, null);\n    };\n    /**\n     * Get all features that intersect a pixel on the viewport.\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n     * @param {AtPixelOptions=} opt_options Optional options.\n     * @return {Array<import(\"./Feature.js\").FeatureLike>} The detected features or\n     * an empty array if none were found.\n     * @api\n     */\n    PluggableMap.prototype.getFeaturesAtPixel = function (pixel, opt_options) {\n        var features = [];\n        this.forEachFeatureAtPixel(pixel, function (feature) {\n            features.push(feature);\n        }, opt_options);\n        return features;\n    };\n    /**\n     * Detect layers that have a color value at a pixel on the viewport, and\n     * execute a callback with each matching layer. Layers included in the\n     * detection can be configured through `opt_layerFilter`.\n     *\n     * Note: this may give false positives unless the map layers have had different `className`\n     * properties assigned to them.\n     *\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n     * @param {function(this: S, import(\"./layer/Layer.js\").default, (Uint8ClampedArray|Uint8Array)): T} callback\n     *     Layer callback. This callback will receive two arguments: first is the\n     *     {@link module:ol/layer/Layer layer}, second argument is an array representing\n     *     [R, G, B, A] pixel values (0 - 255) and will be `null` for layer types\n     *     that do not currently support this argument. To stop detection, callback\n     *     functions can return a truthy value.\n     * @param {AtPixelOptions=} opt_options Configuration options.\n     * @return {T|undefined} Callback result, i.e. the return value of last\n     * callback execution, or the first truthy callback return value.\n     * @template S,T\n     * @api\n     */\n    PluggableMap.prototype.forEachLayerAtPixel = function (pixel, callback, opt_options) {\n        if (!this.frameState_) {\n            return;\n        }\n        var options = opt_options || {};\n        var hitTolerance = options.hitTolerance !== undefined ?\n            options.hitTolerance * this.frameState_.pixelRatio : 0;\n        var layerFilter = options.layerFilter || TRUE;\n        return this.renderer_.forEachLayerAtPixel(pixel, this.frameState_, hitTolerance, callback, layerFilter);\n    };\n    /**\n     * Detect if features intersect a pixel on the viewport. Layers included in the\n     * detection can be configured through `opt_layerFilter`.\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel.\n     * @param {AtPixelOptions=} opt_options Optional options.\n     * @return {boolean} Is there a feature at the given pixel?\n     * @api\n     */\n    PluggableMap.prototype.hasFeatureAtPixel = function (pixel, opt_options) {\n        if (!this.frameState_) {\n            return false;\n        }\n        var coordinate = this.getCoordinateFromPixelInternal(pixel);\n        opt_options = opt_options !== undefined ? opt_options : {};\n        var layerFilter = opt_options.layerFilter !== undefined ? opt_options.layerFilter : TRUE;\n        var hitTolerance = opt_options.hitTolerance !== undefined ?\n            opt_options.hitTolerance * this.frameState_.pixelRatio : 0;\n        var checkWrapped = opt_options.checkWrapped !== false;\n        return this.renderer_.hasFeatureAtCoordinate(coordinate, this.frameState_, hitTolerance, checkWrapped, layerFilter, null);\n    };\n    /**\n     * Returns the coordinate in user projection for a browser event.\n     * @param {Event} event Event.\n     * @return {import(\"./coordinate.js\").Coordinate} Coordinate.\n     * @api\n     */\n    PluggableMap.prototype.getEventCoordinate = function (event) {\n        return this.getCoordinateFromPixel(this.getEventPixel(event));\n    };\n    /**\n     * Returns the coordinate in view projection for a browser event.\n     * @param {Event} event Event.\n     * @return {import(\"./coordinate.js\").Coordinate} Coordinate.\n     */\n    PluggableMap.prototype.getEventCoordinateInternal = function (event) {\n        return this.getCoordinateFromPixelInternal(this.getEventPixel(event));\n    };\n    /**\n     * Returns the map pixel position for a browser event relative to the viewport.\n     * @param {Event|TouchEvent} event Event.\n     * @return {import(\"./pixel.js\").Pixel} Pixel.\n     * @api\n     */\n    PluggableMap.prototype.getEventPixel = function (event) {\n        var viewportPosition = this.viewport_.getBoundingClientRect();\n        var eventPosition = 'changedTouches' in event ?\n            /** @type {TouchEvent} */ (event).changedTouches[0] :\n            /** @type {MouseEvent} */ (event);\n        return [\n            eventPosition.clientX - viewportPosition.left,\n            eventPosition.clientY - viewportPosition.top\n        ];\n    };\n    /**\n     * Get the target in which this map is rendered.\n     * Note that this returns what is entered as an option or in setTarget:\n     * if that was an element, it returns an element; if a string, it returns that.\n     * @return {HTMLElement|string|undefined} The Element or id of the Element that the\n     *     map is rendered in.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.getTarget = function () {\n        return /** @type {HTMLElement|string|undefined} */ (this.get(MapProperty.TARGET));\n    };\n    /**\n     * Get the DOM element into which this map is rendered. In contrast to\n     * `getTarget` this method always return an `Element`, or `null` if the\n     * map has no target.\n     * @return {HTMLElement} The element that the map is rendered in.\n     * @api\n     */\n    PluggableMap.prototype.getTargetElement = function () {\n        var target = this.getTarget();\n        if (target !== undefined) {\n            return typeof target === 'string' ? document.getElementById(target) : target;\n        }\n        else {\n            return null;\n        }\n    };\n    /**\n     * Get the coordinate for a given pixel.  This returns a coordinate in the\n     * user projection.\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel position in the map viewport.\n     * @return {import(\"./coordinate.js\").Coordinate} The coordinate for the pixel position.\n     * @api\n     */\n    PluggableMap.prototype.getCoordinateFromPixel = function (pixel) {\n        return toUserCoordinate(this.getCoordinateFromPixelInternal(pixel), this.getView().getProjection());\n    };\n    /**\n     * Get the coordinate for a given pixel.  This returns a coordinate in the\n     * map view projection.\n     * @param {import(\"./pixel.js\").Pixel} pixel Pixel position in the map viewport.\n     * @return {import(\"./coordinate.js\").Coordinate} The coordinate for the pixel position.\n     */\n    PluggableMap.prototype.getCoordinateFromPixelInternal = function (pixel) {\n        var frameState = this.frameState_;\n        if (!frameState) {\n            return null;\n        }\n        else {\n            return applyTransform(frameState.pixelToCoordinateTransform, pixel.slice());\n        }\n    };\n    /**\n     * Get the map controls. Modifying this collection changes the controls\n     * associated with the map.\n     * @return {Collection<import(\"./control/Control.js\").default>} Controls.\n     * @api\n     */\n    PluggableMap.prototype.getControls = function () {\n        return this.controls;\n    };\n    /**\n     * Get the map overlays. Modifying this collection changes the overlays\n     * associated with the map.\n     * @return {Collection<import(\"./Overlay.js\").default>} Overlays.\n     * @api\n     */\n    PluggableMap.prototype.getOverlays = function () {\n        return this.overlays_;\n    };\n    /**\n     * Get an overlay by its identifier (the value returned by overlay.getId()).\n     * Note that the index treats string and numeric identifiers as the same. So\n     * `map.getOverlayById(2)` will return an overlay with id `'2'` or `2`.\n     * @param {string|number} id Overlay identifier.\n     * @return {import(\"./Overlay.js\").default} Overlay.\n     * @api\n     */\n    PluggableMap.prototype.getOverlayById = function (id) {\n        var overlay = this.overlayIdIndex_[id.toString()];\n        return overlay !== undefined ? overlay : null;\n    };\n    /**\n     * Get the map interactions. Modifying this collection changes the interactions\n     * associated with the map.\n     *\n     * Interactions are used for e.g. pan, zoom and rotate.\n     * @return {Collection<import(\"./interaction/Interaction.js\").default>} Interactions.\n     * @api\n     */\n    PluggableMap.prototype.getInteractions = function () {\n        return this.interactions;\n    };\n    /**\n     * Get the layergroup associated with this map.\n     * @return {LayerGroup} A layer group containing the layers in this map.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.getLayerGroup = function () {\n        return (\n        /** @type {LayerGroup} */ (this.get(MapProperty.LAYERGROUP)));\n    };\n    /**\n     * Get the collection of layers associated with this map.\n     * @return {!Collection<import(\"./layer/Base.js\").default>} Layers.\n     * @api\n     */\n    PluggableMap.prototype.getLayers = function () {\n        var layers = this.getLayerGroup().getLayers();\n        return layers;\n    };\n    /**\n     * @return {boolean} Layers have sources that are still loading.\n     */\n    PluggableMap.prototype.getLoading = function () {\n        var layerStatesArray = this.getLayerGroup().getLayerStatesArray();\n        for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n            var layer = layerStatesArray[i].layer;\n            var source = /** @type {import(\"./layer/Layer.js\").default} */ (layer).getSource();\n            if (source && source.loading) {\n                return true;\n            }\n        }\n        return false;\n    };\n    /**\n     * Get the pixel for a coordinate.  This takes a coordinate in the user\n     * projection and returns the corresponding pixel.\n     * @param {import(\"./coordinate.js\").Coordinate} coordinate A map coordinate.\n     * @return {import(\"./pixel.js\").Pixel} A pixel position in the map viewport.\n     * @api\n     */\n    PluggableMap.prototype.getPixelFromCoordinate = function (coordinate) {\n        var viewCoordinate = fromUserCoordinate(coordinate, this.getView().getProjection());\n        return this.getPixelFromCoordinateInternal(viewCoordinate);\n    };\n    /**\n     * Get the pixel for a coordinate.  This takes a coordinate in the map view\n     * projection and returns the corresponding pixel.\n     * @param {import(\"./coordinate.js\").Coordinate} coordinate A map coordinate.\n     * @return {import(\"./pixel.js\").Pixel} A pixel position in the map viewport.\n     */\n    PluggableMap.prototype.getPixelFromCoordinateInternal = function (coordinate) {\n        var frameState = this.frameState_;\n        if (!frameState) {\n            return null;\n        }\n        else {\n            return applyTransform(frameState.coordinateToPixelTransform, coordinate.slice(0, 2));\n        }\n    };\n    /**\n     * Get the map renderer.\n     * @return {import(\"./renderer/Map.js\").default} Renderer\n     */\n    PluggableMap.prototype.getRenderer = function () {\n        return this.renderer_;\n    };\n    /**\n     * Get the size of this map.\n     * @return {import(\"./size.js\").Size|undefined} The size in pixels of the map in the DOM.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.getSize = function () {\n        return (\n        /** @type {import(\"./size.js\").Size|undefined} */ (this.get(MapProperty.SIZE)));\n    };\n    /**\n     * Get the view associated with this map. A view manages properties such as\n     * center and resolution.\n     * @return {View} The view that controls this map.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.getView = function () {\n        return (\n        /** @type {View} */ (this.get(MapProperty.VIEW)));\n    };\n    /**\n     * Get the element that serves as the map viewport.\n     * @return {HTMLElement} Viewport.\n     * @api\n     */\n    PluggableMap.prototype.getViewport = function () {\n        return this.viewport_;\n    };\n    /**\n     * Get the element that serves as the container for overlays.  Elements added to\n     * this container will let mousedown and touchstart events through to the map,\n     * so clicks and gestures on an overlay will trigger {@link module:ol/MapBrowserEvent~MapBrowserEvent}\n     * events.\n     * @return {!HTMLElement} The map's overlay container.\n     */\n    PluggableMap.prototype.getOverlayContainer = function () {\n        return this.overlayContainer_;\n    };\n    /**\n     * Get the element that serves as a container for overlays that don't allow\n     * event propagation. Elements added to this container won't let mousedown and\n     * touchstart events through to the map, so clicks and gestures on an overlay\n     * don't trigger any {@link module:ol/MapBrowserEvent~MapBrowserEvent}.\n     * @return {!HTMLElement} The map's overlay container that stops events.\n     */\n    PluggableMap.prototype.getOverlayContainerStopEvent = function () {\n        return this.overlayContainerStopEvent_;\n    };\n    /**\n     * @param {import(\"./Tile.js\").default} tile Tile.\n     * @param {string} tileSourceKey Tile source key.\n     * @param {import(\"./coordinate.js\").Coordinate} tileCenter Tile center.\n     * @param {number} tileResolution Tile resolution.\n     * @return {number} Tile priority.\n     */\n    PluggableMap.prototype.getTilePriority = function (tile, tileSourceKey, tileCenter, tileResolution) {\n        return getTilePriority(this.frameState_, tile, tileSourceKey, tileCenter, tileResolution);\n    };\n    /**\n     * @param {Event} browserEvent Browser event.\n     * @param {string=} opt_type Type.\n     */\n    PluggableMap.prototype.handleBrowserEvent = function (browserEvent, opt_type) {\n        var type = opt_type || browserEvent.type;\n        var mapBrowserEvent = new MapBrowserEvent(type, this, browserEvent);\n        this.handleMapBrowserEvent(mapBrowserEvent);\n    };\n    /**\n     * @param {MapBrowserEvent} mapBrowserEvent The event to handle.\n     */\n    PluggableMap.prototype.handleMapBrowserEvent = function (mapBrowserEvent) {\n        if (!this.frameState_) {\n            // With no view defined, we cannot translate pixels into geographical\n            // coordinates so interactions cannot be used.\n            return;\n        }\n        var target = /** @type {Node} */ (mapBrowserEvent.originalEvent.target);\n        if (!mapBrowserEvent.dragging) {\n            if (this.overlayContainerStopEvent_.contains(target) || !(document.body.contains(target) || this.viewport_.getRootNode && this.viewport_.getRootNode().contains(target))) {\n                // Abort if the event target is a child of the container that doesn't allow\n                // event propagation or is no longer in the page. It's possible for the target to no longer\n                // be in the page if it has been removed in an event listener, this might happen in a Control\n                // that recreates it's content based on user interaction either manually or via a render\n                // in something like https://reactjs.org/\n                return;\n            }\n        }\n        mapBrowserEvent.frameState = this.frameState_;\n        var interactionsArray = this.getInteractions().getArray();\n        if (this.dispatchEvent(mapBrowserEvent) !== false) {\n            for (var i = interactionsArray.length - 1; i >= 0; i--) {\n                var interaction = interactionsArray[i];\n                if (!interaction.getActive()) {\n                    continue;\n                }\n                var cont = interaction.handleEvent(mapBrowserEvent);\n                if (!cont) {\n                    break;\n                }\n            }\n        }\n    };\n    /**\n     * @protected\n     */\n    PluggableMap.prototype.handlePostRender = function () {\n        var frameState = this.frameState_;\n        // Manage the tile queue\n        // Image loads are expensive and a limited resource, so try to use them\n        // efficiently:\n        // * When the view is static we allow a large number of parallel tile loads\n        //   to complete the frame as quickly as possible.\n        // * When animating or interacting, image loads can cause janks, so we reduce\n        //   the maximum number of loads per frame and limit the number of parallel\n        //   tile loads to remain reactive to view changes and to reduce the chance of\n        //   loading tiles that will quickly disappear from view.\n        var tileQueue = this.tileQueue_;\n        if (!tileQueue.isEmpty()) {\n            var maxTotalLoading = this.maxTilesLoading_;\n            var maxNewLoads = maxTotalLoading;\n            if (frameState) {\n                var hints = frameState.viewHints;\n                if (hints[ViewHint.ANIMATING] || hints[ViewHint.INTERACTING]) {\n                    var lowOnFrameBudget = !IMAGE_DECODE && Date.now() - frameState.time > 8;\n                    maxTotalLoading = lowOnFrameBudget ? 0 : 8;\n                    maxNewLoads = lowOnFrameBudget ? 0 : 2;\n                }\n            }\n            if (tileQueue.getTilesLoading() < maxTotalLoading) {\n                tileQueue.reprioritize(); // FIXME only call if view has changed\n                tileQueue.loadMoreTiles(maxTotalLoading, maxNewLoads);\n            }\n        }\n        if (frameState && this.hasListener(RenderEventType.RENDERCOMPLETE) && !frameState.animate &&\n            !this.tileQueue_.getTilesLoading() && !this.getLoading()) {\n            this.renderer_.dispatchRenderEvent(RenderEventType.RENDERCOMPLETE, frameState);\n        }\n        var postRenderFunctions = this.postRenderFunctions_;\n        for (var i = 0, ii = postRenderFunctions.length; i < ii; ++i) {\n            postRenderFunctions[i](this, frameState);\n        }\n        postRenderFunctions.length = 0;\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleSizeChanged_ = function () {\n        if (this.getView()) {\n            this.getView().resolveConstraints(0);\n        }\n        this.render();\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleTargetChanged_ = function () {\n        // target may be undefined, null, a string or an Element.\n        // If it's a string we convert it to an Element before proceeding.\n        // If it's not now an Element we remove the viewport from the DOM.\n        // If it's an Element we append the viewport element to it.\n        var targetElement;\n        if (this.getTarget()) {\n            targetElement = this.getTargetElement();\n        }\n        if (this.keyHandlerKeys_) {\n            for (var i = 0, ii = this.keyHandlerKeys_.length; i < ii; ++i) {\n                unlistenByKey(this.keyHandlerKeys_[i]);\n            }\n            this.keyHandlerKeys_ = null;\n        }\n        if (!targetElement) {\n            if (this.renderer_) {\n                clearTimeout(this.postRenderTimeoutHandle_);\n                this.postRenderFunctions_.length = 0;\n                this.renderer_.dispose();\n                this.renderer_ = null;\n            }\n            if (this.animationDelayKey_) {\n                cancelAnimationFrame(this.animationDelayKey_);\n                this.animationDelayKey_ = undefined;\n            }\n            removeNode(this.viewport_);\n            if (this.handleResize_ !== undefined) {\n                removeEventListener(EventType.RESIZE, this.handleResize_, false);\n                this.handleResize_ = undefined;\n            }\n        }\n        else {\n            targetElement.appendChild(this.viewport_);\n            if (!this.renderer_) {\n                this.renderer_ = this.createRenderer();\n            }\n            var keyboardEventTarget = !this.keyboardEventTarget_ ?\n                targetElement : this.keyboardEventTarget_;\n            this.keyHandlerKeys_ = [\n                listen(keyboardEventTarget, EventType.KEYDOWN, this.handleBrowserEvent, this),\n                listen(keyboardEventTarget, EventType.KEYPRESS, this.handleBrowserEvent, this)\n            ];\n            if (!this.handleResize_) {\n                this.handleResize_ = this.updateSize.bind(this);\n                window.addEventListener(EventType.RESIZE, this.handleResize_, false);\n            }\n        }\n        this.updateSize();\n        // updateSize calls setSize, so no need to call this.render\n        // ourselves here.\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleTileChange_ = function () {\n        this.render();\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleViewPropertyChanged_ = function () {\n        this.render();\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleViewChanged_ = function () {\n        if (this.viewPropertyListenerKey_) {\n            unlistenByKey(this.viewPropertyListenerKey_);\n            this.viewPropertyListenerKey_ = null;\n        }\n        if (this.viewChangeListenerKey_) {\n            unlistenByKey(this.viewChangeListenerKey_);\n            this.viewChangeListenerKey_ = null;\n        }\n        var view = this.getView();\n        if (view) {\n            this.updateViewportSize_();\n            this.viewPropertyListenerKey_ = listen(view, ObjectEventType.PROPERTYCHANGE, this.handleViewPropertyChanged_, this);\n            this.viewChangeListenerKey_ = listen(view, EventType.CHANGE, this.handleViewPropertyChanged_, this);\n            view.resolveConstraints(0);\n        }\n        this.render();\n    };\n    /**\n     * @private\n     */\n    PluggableMap.prototype.handleLayerGroupChanged_ = function () {\n        if (this.layerGroupPropertyListenerKeys_) {\n            this.layerGroupPropertyListenerKeys_.forEach(unlistenByKey);\n            this.layerGroupPropertyListenerKeys_ = null;\n        }\n        var layerGroup = this.getLayerGroup();\n        if (layerGroup) {\n            this.layerGroupPropertyListenerKeys_ = [\n                listen(layerGroup, ObjectEventType.PROPERTYCHANGE, this.render, this),\n                listen(layerGroup, EventType.CHANGE, this.render, this)\n            ];\n        }\n        this.render();\n    };\n    /**\n     * @return {boolean} Is rendered.\n     */\n    PluggableMap.prototype.isRendered = function () {\n        return !!this.frameState_;\n    };\n    /**\n     * Requests an immediate render in a synchronous manner.\n     * @api\n     */\n    PluggableMap.prototype.renderSync = function () {\n        if (this.animationDelayKey_) {\n            cancelAnimationFrame(this.animationDelayKey_);\n        }\n        this.animationDelay_();\n    };\n    /**\n     * Redraws all text after new fonts have loaded\n     */\n    PluggableMap.prototype.redrawText = function () {\n        var layerStates = this.getLayerGroup().getLayerStatesArray();\n        for (var i = 0, ii = layerStates.length; i < ii; ++i) {\n            var layer = layerStates[i].layer;\n            if (layer.hasRenderer()) {\n                layer.getRenderer().handleFontsChanged();\n            }\n        }\n    };\n    /**\n     * Request a map rendering (at the next animation frame).\n     * @api\n     */\n    PluggableMap.prototype.render = function () {\n        if (this.renderer_ && this.animationDelayKey_ === undefined) {\n            this.animationDelayKey_ = requestAnimationFrame(this.animationDelay_);\n        }\n    };\n    /**\n     * Remove the given control from the map.\n     * @param {import(\"./control/Control.js\").default} control Control.\n     * @return {import(\"./control/Control.js\").default|undefined} The removed control (or undefined\n     *     if the control was not found).\n     * @api\n     */\n    PluggableMap.prototype.removeControl = function (control) {\n        return this.getControls().remove(control);\n    };\n    /**\n     * Remove the given interaction from the map.\n     * @param {import(\"./interaction/Interaction.js\").default} interaction Interaction to remove.\n     * @return {import(\"./interaction/Interaction.js\").default|undefined} The removed interaction (or\n     *     undefined if the interaction was not found).\n     * @api\n     */\n    PluggableMap.prototype.removeInteraction = function (interaction) {\n        return this.getInteractions().remove(interaction);\n    };\n    /**\n     * Removes the given layer from the map.\n     * @param {import(\"./layer/Base.js\").default} layer Layer.\n     * @return {import(\"./layer/Base.js\").default|undefined} The removed layer (or undefined if the\n     *     layer was not found).\n     * @api\n     */\n    PluggableMap.prototype.removeLayer = function (layer) {\n        var layers = this.getLayerGroup().getLayers();\n        return layers.remove(layer);\n    };\n    /**\n     * Remove the given overlay from the map.\n     * @param {import(\"./Overlay.js\").default} overlay Overlay.\n     * @return {import(\"./Overlay.js\").default|undefined} The removed overlay (or undefined\n     *     if the overlay was not found).\n     * @api\n     */\n    PluggableMap.prototype.removeOverlay = function (overlay) {\n        return this.getOverlays().remove(overlay);\n    };\n    /**\n     * @param {number} time Time.\n     * @private\n     */\n    PluggableMap.prototype.renderFrame_ = function (time) {\n        var size = this.getSize();\n        var view = this.getView();\n        var previousFrameState = this.frameState_;\n        /** @type {?FrameState} */\n        var frameState = null;\n        if (size !== undefined && hasArea(size) && view && view.isDef()) {\n            var viewHints = view.getHints(this.frameState_ ? this.frameState_.viewHints : undefined);\n            var viewState = view.getState();\n            frameState = {\n                animate: false,\n                coordinateToPixelTransform: this.coordinateToPixelTransform_,\n                declutterItems: previousFrameState ? previousFrameState.declutterItems : [],\n                extent: getForViewAndSize(viewState.center, viewState.resolution, viewState.rotation, size),\n                index: this.frameIndex_++,\n                layerIndex: 0,\n                layerStatesArray: this.getLayerGroup().getLayerStatesArray(),\n                pixelRatio: this.pixelRatio_,\n                pixelToCoordinateTransform: this.pixelToCoordinateTransform_,\n                postRenderFunctions: [],\n                size: size,\n                tileQueue: this.tileQueue_,\n                time: time,\n                usedTiles: {},\n                viewState: viewState,\n                viewHints: viewHints,\n                wantedTiles: {}\n            };\n        }\n        this.frameState_ = frameState;\n        this.renderer_.renderFrame(frameState);\n        if (frameState) {\n            if (frameState.animate) {\n                this.render();\n            }\n            Array.prototype.push.apply(this.postRenderFunctions_, frameState.postRenderFunctions);\n            if (previousFrameState) {\n                var moveStart = !this.previousExtent_ ||\n                    (!isEmpty(this.previousExtent_) &&\n                        !equals(frameState.extent, this.previousExtent_));\n                if (moveStart) {\n                    this.dispatchEvent(new MapEvent(MapEventType.MOVESTART, this, previousFrameState));\n                    this.previousExtent_ = createOrUpdateEmpty(this.previousExtent_);\n                }\n            }\n            var idle = this.previousExtent_ &&\n                !frameState.viewHints[ViewHint.ANIMATING] &&\n                !frameState.viewHints[ViewHint.INTERACTING] &&\n                !equals(frameState.extent, this.previousExtent_);\n            if (idle) {\n                this.dispatchEvent(new MapEvent(MapEventType.MOVEEND, this, frameState));\n                clone(frameState.extent, this.previousExtent_);\n            }\n        }\n        this.dispatchEvent(new MapEvent(MapEventType.POSTRENDER, this, frameState));\n        this.postRenderTimeoutHandle_ = setTimeout(this.handlePostRender.bind(this), 0);\n    };\n    /**\n     * Sets the layergroup of this map.\n     * @param {LayerGroup} layerGroup A layer group containing the layers in this map.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.setLayerGroup = function (layerGroup) {\n        this.set(MapProperty.LAYERGROUP, layerGroup);\n    };\n    /**\n     * Set the size of this map.\n     * @param {import(\"./size.js\").Size|undefined} size The size in pixels of the map in the DOM.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.setSize = function (size) {\n        this.set(MapProperty.SIZE, size);\n    };\n    /**\n     * Set the target element to render this map into.\n     * @param {HTMLElement|string|undefined} target The Element or id of the Element\n     *     that the map is rendered in.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.setTarget = function (target) {\n        this.set(MapProperty.TARGET, target);\n    };\n    /**\n     * Set the view for this map.\n     * @param {View} view The view that controls this map.\n     * @observable\n     * @api\n     */\n    PluggableMap.prototype.setView = function (view) {\n        this.set(MapProperty.VIEW, view);\n    };\n    /**\n     * Force a recalculation of the map viewport size.  This should be called when\n     * third-party code changes the size of the map viewport.\n     * @api\n     */\n    PluggableMap.prototype.updateSize = function () {\n        var targetElement = this.getTargetElement();\n        if (!targetElement) {\n            this.setSize(undefined);\n        }\n        else {\n            var computedStyle = getComputedStyle(targetElement);\n            this.setSize([\n                targetElement.offsetWidth -\n                    parseFloat(computedStyle['borderLeftWidth']) -\n                    parseFloat(computedStyle['paddingLeft']) -\n                    parseFloat(computedStyle['paddingRight']) -\n                    parseFloat(computedStyle['borderRightWidth']),\n                targetElement.offsetHeight -\n                    parseFloat(computedStyle['borderTopWidth']) -\n                    parseFloat(computedStyle['paddingTop']) -\n                    parseFloat(computedStyle['paddingBottom']) -\n                    parseFloat(computedStyle['borderBottomWidth'])\n            ]);\n        }\n        this.updateViewportSize_();\n    };\n    /**\n     * Recomputes the viewport size and save it on the view object (if any)\n     * @private\n     */\n    PluggableMap.prototype.updateViewportSize_ = function () {\n        var view = this.getView();\n        if (view) {\n            var size = undefined;\n            var computedStyle = getComputedStyle(this.viewport_);\n            if (computedStyle.width && computedStyle.height) {\n                size = [\n                    parseInt(computedStyle.width, 10),\n                    parseInt(computedStyle.height, 10)\n                ];\n            }\n            view.setViewportSize(size);\n        }\n    };\n    return PluggableMap;\n}(BaseObject));\n/**\n * @param {MapOptions} options Map options.\n * @return {MapOptionsInternal} Internal map options.\n */\nfunction createOptionsInternal(options) {\n    /**\n     * @type {HTMLElement|Document}\n     */\n    var keyboardEventTarget = null;\n    if (options.keyboardEventTarget !== undefined) {\n        keyboardEventTarget = typeof options.keyboardEventTarget === 'string' ?\n            document.getElementById(options.keyboardEventTarget) :\n            options.keyboardEventTarget;\n    }\n    /**\n     * @type {Object<string, *>}\n     */\n    var values = {};\n    var layerGroup = options.layers && typeof /** @type {?} */ (options.layers).getLayers === 'function' ?\n        /** @type {LayerGroup} */ (options.layers) : new LayerGroup({ layers: /** @type {Collection} */ (options.layers) });\n    values[MapProperty.LAYERGROUP] = layerGroup;\n    values[MapProperty.TARGET] = options.target;\n    values[MapProperty.VIEW] = options.view !== undefined ?\n        options.view : new View();\n    var controls;\n    if (options.controls !== undefined) {\n        if (Array.isArray(options.controls)) {\n            controls = new Collection(options.controls.slice());\n        }\n        else {\n            assert(typeof /** @type {?} */ (options.controls).getArray === 'function', 47); // Expected `controls` to be an array or an `import(\"./Collection.js\").Collection`\n            controls = /** @type {Collection} */ (options.controls);\n        }\n    }\n    var interactions;\n    if (options.interactions !== undefined) {\n        if (Array.isArray(options.interactions)) {\n            interactions = new Collection(options.interactions.slice());\n        }\n        else {\n            assert(typeof /** @type {?} */ (options.interactions).getArray === 'function', 48); // Expected `interactions` to be an array or an `import(\"./Collection.js\").Collection`\n            interactions = /** @type {Collection} */ (options.interactions);\n        }\n    }\n    var overlays;\n    if (options.overlays !== undefined) {\n        if (Array.isArray(options.overlays)) {\n            overlays = new Collection(options.overlays.slice());\n        }\n        else {\n            assert(typeof /** @type {?} */ (options.overlays).getArray === 'function', 49); // Expected `overlays` to be an array or an `import(\"./Collection.js\").Collection`\n            overlays = options.overlays;\n        }\n    }\n    else {\n        overlays = new Collection();\n    }\n    return {\n        controls: controls,\n        interactions: interactions,\n        keyboardEventTarget: keyboardEventTarget,\n        overlays: overlays,\n        values: values\n    };\n}\nexport default PluggableMap;\n//# sourceMappingURL=PluggableMap.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/Layer\n */\nimport { listen, unlistenByKey } from '../events.js';\nimport EventType from '../events/EventType.js';\nimport { getChangeEventType } from '../Object.js';\nimport BaseLayer from './Base.js';\nimport LayerProperty from './Property.js';\nimport { assign } from '../obj.js';\nimport RenderEventType from '../render/EventType.js';\nimport SourceState from '../source/State.js';\nimport { assert } from '../asserts.js';\n/**\n * @typedef {function(import(\"../PluggableMap.js\").FrameState):HTMLElement} RenderFunction\n */\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-layer'] A CSS class name to set to the layer element.\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering.  The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering.  At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n * @property {import(\"../source/Source.js\").default} [source] Source for this layer.  If not provided to the constructor,\n * the source can be set by calling {@link module:ol/layer/Layer#setSource layer.setSource(source)} after\n * construction.\n * @property {import(\"../PluggableMap.js\").default} [map] Map.\n * @property {RenderFunction} [render] Render function. Takes the frame state as input and is expected to return an\n * HTML element. Will overwrite the default rendering for the layer.\n */\n/**\n * @typedef {Object} State\n * @property {import(\"./Base.js\").default} layer\n * @property {number} opacity Opacity, the value is rounded to two digits to appear after the decimal point.\n * @property {SourceState} sourceState\n * @property {boolean} visible\n * @property {boolean} managed\n * @property {import(\"../extent.js\").Extent} [extent]\n * @property {number} zIndex\n * @property {number} maxResolution\n * @property {number} minResolution\n * @property {number} minZoom\n * @property {number} maxZoom\n */\n/**\n * @classdesc\n * Base class from which all layer types are derived. This should only be instantiated\n * in the case where a custom layer is be added to the map with a custom `render` function.\n * Such a function can be specified in the `options` object, and is expected to return an HTML element.\n *\n * A visual representation of raster or vector map data.\n * Layers group together those properties that pertain to how the data is to be\n * displayed, irrespective of the source of that data.\n *\n * Layers are usually added to a map with {@link module:ol/Map#addLayer}. Components\n * like {@link module:ol/interaction/Select~Select} use unmanaged layers\n * internally. These unmanaged layers are associated with the map using\n * {@link module:ol/layer/Layer~Layer#setMap} instead.\n *\n * A generic `change` event is fired when the state of the source changes.\n *\n * Please note that for performance reasons several layers might get rendered to\n * the same HTML element, which will cause {@link module:ol/Map~Map#forEachLayerAtPixel} to\n * give false positives. To avoid this, apply different `className` properties to the\n * layers at creation time.\n *\n * @fires import(\"../render/Event.js\").RenderEvent#prerender\n * @fires import(\"../render/Event.js\").RenderEvent#postrender\n *\n * @template {import(\"../source/Source.js\").default} SourceType\n * @api\n */\nvar Layer = /** @class */ (function (_super) {\n    __extends(Layer, _super);\n    /**\n     * @param {Options} options Layer options.\n     */\n    function Layer(options) {\n        var _this = this;\n        var baseOptions = assign({}, options);\n        delete baseOptions.source;\n        _this = _super.call(this, baseOptions) || this;\n        /**\n         * @private\n         * @type {?import(\"../events.js\").EventsKey}\n         */\n        _this.mapPrecomposeKey_ = null;\n        /**\n         * @private\n         * @type {?import(\"../events.js\").EventsKey}\n         */\n        _this.mapRenderKey_ = null;\n        /**\n         * @private\n         * @type {?import(\"../events.js\").EventsKey}\n         */\n        _this.sourceChangeKey_ = null;\n        /**\n         * @private\n         * @type {import(\"../renderer/Layer.js\").default}\n         */\n        _this.renderer_ = null;\n        // Overwrite default render method with a custom one\n        if (options.render) {\n            _this.render = options.render;\n        }\n        if (options.map) {\n            _this.setMap(options.map);\n        }\n        _this.addEventListener(getChangeEventType(LayerProperty.SOURCE), _this.handleSourcePropertyChange_);\n        var source = options.source ? /** @type {SourceType} */ (options.source) : null;\n        _this.setSource(source);\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    Layer.prototype.getLayersArray = function (opt_array) {\n        var array = opt_array ? opt_array : [];\n        array.push(this);\n        return array;\n    };\n    /**\n     * @inheritDoc\n     */\n    Layer.prototype.getLayerStatesArray = function (opt_states) {\n        var states = opt_states ? opt_states : [];\n        states.push(this.getLayerState());\n        return states;\n    };\n    /**\n     * Get the layer source.\n     * @return {SourceType} The layer source (or `null` if not yet set).\n     * @observable\n     * @api\n     */\n    Layer.prototype.getSource = function () {\n        return /** @type {SourceType} */ (this.get(LayerProperty.SOURCE)) || null;\n    };\n    /**\n      * @inheritDoc\n      */\n    Layer.prototype.getSourceState = function () {\n        var source = this.getSource();\n        return !source ? SourceState.UNDEFINED : source.getState();\n    };\n    /**\n     * @private\n     */\n    Layer.prototype.handleSourceChange_ = function () {\n        this.changed();\n    };\n    /**\n     * @private\n     */\n    Layer.prototype.handleSourcePropertyChange_ = function () {\n        if (this.sourceChangeKey_) {\n            unlistenByKey(this.sourceChangeKey_);\n            this.sourceChangeKey_ = null;\n        }\n        var source = this.getSource();\n        if (source) {\n            this.sourceChangeKey_ = listen(source, EventType.CHANGE, this.handleSourceChange_, this);\n        }\n        this.changed();\n    };\n    /**\n     * @param {import(\"../pixel\").Pixel} pixel Pixel.\n     * @return {Promise<Array<import(\"../Feature\").default>>} Promise that resolves with\n     * an array of features.\n     */\n    Layer.prototype.getFeatures = function (pixel) {\n        return this.renderer_.getFeatures(pixel);\n    };\n    /**\n     * In charge to manage the rendering of the layer. One layer type is\n     * bounded with one layer renderer.\n     * @param {?import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {HTMLElement} target Target which the renderer may (but need not) use\n     * for rendering its content.\n     * @return {HTMLElement} The rendered element.\n     */\n    Layer.prototype.render = function (frameState, target) {\n        var layerRenderer = this.getRenderer();\n        if (layerRenderer.prepareFrame(frameState)) {\n            return layerRenderer.renderFrame(frameState, target);\n        }\n    };\n    /**\n     * Sets the layer to be rendered on top of other layers on a map. The map will\n     * not manage this layer in its layers collection, and the callback in\n     * {@link module:ol/Map#forEachLayerAtPixel} will receive `null` as layer. This\n     * is useful for temporary layers. To remove an unmanaged layer from the map,\n     * use `#setMap(null)`.\n     *\n     * To add the layer to a map and have it managed by the map, use\n     * {@link module:ol/Map#addLayer} instead.\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     * @api\n     */\n    Layer.prototype.setMap = function (map) {\n        if (this.mapPrecomposeKey_) {\n            unlistenByKey(this.mapPrecomposeKey_);\n            this.mapPrecomposeKey_ = null;\n        }\n        if (!map) {\n            this.changed();\n        }\n        if (this.mapRenderKey_) {\n            unlistenByKey(this.mapRenderKey_);\n            this.mapRenderKey_ = null;\n        }\n        if (map) {\n            this.mapPrecomposeKey_ = listen(map, RenderEventType.PRECOMPOSE, function (evt) {\n                var renderEvent = /** @type {import(\"../render/Event.js\").default} */ (evt);\n                var layerStatesArray = renderEvent.frameState.layerStatesArray;\n                var layerState = this.getLayerState(false);\n                // A layer can only be added to the map once. Use either `layer.setMap()` or `map.addLayer()`, not both.\n                assert(!layerStatesArray.some(function (arrayLayerState) {\n                    return arrayLayerState.layer === layerState.layer;\n                }), 67);\n                layerStatesArray.push(layerState);\n            }, this);\n            this.mapRenderKey_ = listen(this, EventType.CHANGE, map.render, map);\n            this.changed();\n        }\n    };\n    /**\n     * Set the layer source.\n     * @param {SourceType} source The layer source.\n     * @observable\n     * @api\n     */\n    Layer.prototype.setSource = function (source) {\n        this.set(LayerProperty.SOURCE, source);\n    };\n    /**\n     * Get the renderer for this layer.\n     * @return {import(\"../renderer/Layer.js\").default} The layer renderer.\n     */\n    Layer.prototype.getRenderer = function () {\n        if (!this.renderer_) {\n            this.renderer_ = this.createRenderer();\n        }\n        return this.renderer_;\n    };\n    /**\n     * @return {boolean} The layer has a renderer.\n     */\n    Layer.prototype.hasRenderer = function () {\n        return !!this.renderer_;\n    };\n    /**\n     * Create a renderer for this layer.\n     * @return {import(\"../renderer/Layer.js\").default} A layer renderer.\n     * @protected\n     */\n    Layer.prototype.createRenderer = function () {\n        return null;\n    };\n    /**\n     * @inheritDoc\n     */\n    Layer.prototype.disposeInternal = function () {\n        this.setSource(null);\n        _super.prototype.disposeInternal.call(this);\n    };\n    return Layer;\n}(BaseLayer));\n/**\n * Return `true` if the layer is visible and if the provided view state\n * has resolution and zoom levels that are in range of the layer's min/max.\n * @param {State} layerState Layer state.\n * @param {import(\"../View.js\").State} viewState View state.\n * @return {boolean} The layer is visible at the given view state.\n */\nexport function inView(layerState, viewState) {\n    if (!layerState.visible) {\n        return false;\n    }\n    var resolution = viewState.resolution;\n    if (resolution < layerState.minResolution || resolution >= layerState.maxResolution) {\n        return false;\n    }\n    var zoom = viewState.zoom;\n    return zoom > layerState.minZoom && zoom <= layerState.maxZoom;\n}\nexport default Layer;\n//# sourceMappingURL=Layer.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/control/Attribution\n */\nimport { equals } from '../array.js';\nimport Control from './Control.js';\nimport { CLASS_CONTROL, CLASS_UNSELECTABLE, CLASS_COLLAPSED } from '../css.js';\nimport { removeChildren, replaceNode } from '../dom.js';\nimport EventType from '../events/EventType.js';\nimport { inView } from '../layer/Layer.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-attribution'] CSS class name.\n * @property {HTMLElement|string} [target] Specify a target if you\n * want the control to be rendered outside of the map's\n * viewport.\n * @property {boolean} [collapsible] Specify if attributions can\n * be collapsed. If not specified, sources control this behavior with their\n * `attributionsCollapsible` setting.\n * @property {boolean} [collapsed=true] Specify if attributions should\n * be collapsed at startup.\n * @property {string} [tipLabel='Attributions'] Text label to use for the button tip.\n * @property {string} [label='i'] Text label to use for the\n * collapsed attributions button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {string|HTMLElement} [collapseLabel='»'] Text label to use\n * for the expanded attributions button.\n * Instead of text, also an element (e.g. a `span` element) can be used.\n * @property {function(import(\"../MapEvent.js\").default)} [render] Function called when\n * the control should be re-rendered. This is called in a `requestAnimationFrame`\n * callback.\n */\n/**\n * @classdesc\n * Control to show all the attributions associated with the layer sources\n * in the map. This control is one of the default controls included in maps.\n * By default it will show in the bottom right portion of the map, but this can\n * be changed by using a css selector for `.ol-attribution`.\n *\n * @api\n */\nvar Attribution = /** @class */ (function (_super) {\n    __extends(Attribution, _super);\n    /**\n     * @param {Options=} opt_options Attribution options.\n     */\n    function Attribution(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            element: document.createElement('div'),\n            render: options.render || render,\n            target: options.target\n        }) || this;\n        /**\n         * @private\n         * @type {HTMLElement}\n         */\n        _this.ulElement_ = document.createElement('ul');\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.collapsed_ = options.collapsed !== undefined ? options.collapsed : true;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.overrideCollapsible_ = options.collapsible !== undefined;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.collapsible_ = options.collapsible !== undefined ?\n            options.collapsible : true;\n        if (!_this.collapsible_) {\n            _this.collapsed_ = false;\n        }\n        var className = options.className !== undefined ? options.className : 'ol-attribution';\n        var tipLabel = options.tipLabel !== undefined ? options.tipLabel : 'Attributions';\n        var collapseLabel = options.collapseLabel !== undefined ? options.collapseLabel : '\\u00BB';\n        if (typeof collapseLabel === 'string') {\n            /**\n             * @private\n             * @type {HTMLElement}\n             */\n            _this.collapseLabel_ = document.createElement('span');\n            _this.collapseLabel_.textContent = collapseLabel;\n        }\n        else {\n            _this.collapseLabel_ = collapseLabel;\n        }\n        var label = options.label !== undefined ? options.label : 'i';\n        if (typeof label === 'string') {\n            /**\n             * @private\n             * @type {HTMLElement}\n             */\n            _this.label_ = document.createElement('span');\n            _this.label_.textContent = label;\n        }\n        else {\n            _this.label_ = label;\n        }\n        var activeLabel = (_this.collapsible_ && !_this.collapsed_) ?\n            _this.collapseLabel_ : _this.label_;\n        var button = document.createElement('button');\n        button.setAttribute('type', 'button');\n        button.title = tipLabel;\n        button.appendChild(activeLabel);\n        button.addEventListener(EventType.CLICK, _this.handleClick_.bind(_this), false);\n        var cssClasses = className + ' ' + CLASS_UNSELECTABLE + ' ' + CLASS_CONTROL +\n            (_this.collapsed_ && _this.collapsible_ ? ' ' + CLASS_COLLAPSED : '') +\n            (_this.collapsible_ ? '' : ' ol-uncollapsible');\n        var element = _this.element;\n        element.className = cssClasses;\n        element.appendChild(_this.ulElement_);\n        element.appendChild(button);\n        /**\n         * A list of currently rendered resolutions.\n         * @type {Array<string>}\n         * @private\n         */\n        _this.renderedAttributions_ = [];\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.renderedVisible_ = true;\n        return _this;\n    }\n    /**\n     * Collect a list of visible attributions and set the collapsible state.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @return {Array<string>} Attributions.\n     * @private\n     */\n    Attribution.prototype.collectSourceAttributions_ = function (frameState) {\n        /**\n         * Used to determine if an attribution already exists.\n         * @type {!Object<string, boolean>}\n         */\n        var lookup = {};\n        /**\n         * A list of visible attributions.\n         * @type {Array<string>}\n         */\n        var visibleAttributions = [];\n        var layerStatesArray = frameState.layerStatesArray;\n        for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n            var layerState = layerStatesArray[i];\n            if (!inView(layerState, frameState.viewState)) {\n                continue;\n            }\n            var source = /** @type {import(\"../layer/Layer.js\").default} */ (layerState.layer).getSource();\n            if (!source) {\n                continue;\n            }\n            var attributionGetter = source.getAttributions();\n            if (!attributionGetter) {\n                continue;\n            }\n            var attributions = attributionGetter(frameState);\n            if (!attributions) {\n                continue;\n            }\n            if (!this.overrideCollapsible_ && source.getAttributionsCollapsible() === false) {\n                this.setCollapsible(false);\n            }\n            if (Array.isArray(attributions)) {\n                for (var j = 0, jj = attributions.length; j < jj; ++j) {\n                    if (!(attributions[j] in lookup)) {\n                        visibleAttributions.push(attributions[j]);\n                        lookup[attributions[j]] = true;\n                    }\n                }\n            }\n            else {\n                if (!(attributions in lookup)) {\n                    visibleAttributions.push(attributions);\n                    lookup[attributions] = true;\n                }\n            }\n        }\n        return visibleAttributions;\n    };\n    /**\n     * @private\n     * @param {?import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     */\n    Attribution.prototype.updateElement_ = function (frameState) {\n        if (!frameState) {\n            if (this.renderedVisible_) {\n                this.element.style.display = 'none';\n                this.renderedVisible_ = false;\n            }\n            return;\n        }\n        var attributions = this.collectSourceAttributions_(frameState);\n        var visible = attributions.length > 0;\n        if (this.renderedVisible_ != visible) {\n            this.element.style.display = visible ? '' : 'none';\n            this.renderedVisible_ = visible;\n        }\n        if (equals(attributions, this.renderedAttributions_)) {\n            return;\n        }\n        removeChildren(this.ulElement_);\n        // append the attributions\n        for (var i = 0, ii = attributions.length; i < ii; ++i) {\n            var element = document.createElement('li');\n            element.innerHTML = attributions[i];\n            this.ulElement_.appendChild(element);\n        }\n        this.renderedAttributions_ = attributions;\n    };\n    /**\n     * @param {MouseEvent} event The event to handle\n     * @private\n     */\n    Attribution.prototype.handleClick_ = function (event) {\n        event.preventDefault();\n        this.handleToggle_();\n    };\n    /**\n     * @private\n     */\n    Attribution.prototype.handleToggle_ = function () {\n        this.element.classList.toggle(CLASS_COLLAPSED);\n        if (this.collapsed_) {\n            replaceNode(this.collapseLabel_, this.label_);\n        }\n        else {\n            replaceNode(this.label_, this.collapseLabel_);\n        }\n        this.collapsed_ = !this.collapsed_;\n    };\n    /**\n     * Return `true` if the attribution is collapsible, `false` otherwise.\n     * @return {boolean} True if the widget is collapsible.\n     * @api\n     */\n    Attribution.prototype.getCollapsible = function () {\n        return this.collapsible_;\n    };\n    /**\n     * Set whether the attribution should be collapsible.\n     * @param {boolean} collapsible True if the widget is collapsible.\n     * @api\n     */\n    Attribution.prototype.setCollapsible = function (collapsible) {\n        if (this.collapsible_ === collapsible) {\n            return;\n        }\n        this.collapsible_ = collapsible;\n        this.element.classList.toggle('ol-uncollapsible');\n        if (!collapsible && this.collapsed_) {\n            this.handleToggle_();\n        }\n    };\n    /**\n     * Collapse or expand the attribution according to the passed parameter. Will\n     * not do anything if the attribution isn't collapsible or if the current\n     * collapsed state is already the one requested.\n     * @param {boolean} collapsed True if the widget is collapsed.\n     * @api\n     */\n    Attribution.prototype.setCollapsed = function (collapsed) {\n        if (!this.collapsible_ || this.collapsed_ === collapsed) {\n            return;\n        }\n        this.handleToggle_();\n    };\n    /**\n     * Return `true` when the attribution is currently collapsed or `false`\n     * otherwise.\n     * @return {boolean} True if the widget is collapsed.\n     * @api\n     */\n    Attribution.prototype.getCollapsed = function () {\n        return this.collapsed_;\n    };\n    return Attribution;\n}(Control));\n/**\n * Update the attribution element.\n * @param {import(\"../MapEvent.js\").default} mapEvent Map event.\n * @this {Attribution}\n */\nexport function render(mapEvent) {\n    this.updateElement_(mapEvent.frameState);\n}\nexport default Attribution;\n//# sourceMappingURL=Attribution.js.map","/**\n * @module ol/Kinetic\n */\n/**\n * @classdesc\n * Implementation of inertial deceleration for map movement.\n *\n * @api\n */\nvar Kinetic = /** @class */ (function () {\n    /**\n     * @param {number} decay Rate of decay (must be negative).\n     * @param {number} minVelocity Minimum velocity (pixels/millisecond).\n     * @param {number} delay Delay to consider to calculate the kinetic\n     *     initial values (milliseconds).\n     */\n    function Kinetic(decay, minVelocity, delay) {\n        /**\n         * @private\n         * @type {number}\n         */\n        this.decay_ = decay;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.minVelocity_ = minVelocity;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.delay_ = delay;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        this.points_ = [];\n        /**\n         * @private\n         * @type {number}\n         */\n        this.angle_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.initialVelocity_ = 0;\n    }\n    /**\n     * FIXME empty description for jsdoc\n     */\n    Kinetic.prototype.begin = function () {\n        this.points_.length = 0;\n        this.angle_ = 0;\n        this.initialVelocity_ = 0;\n    };\n    /**\n     * @param {number} x X.\n     * @param {number} y Y.\n     */\n    Kinetic.prototype.update = function (x, y) {\n        this.points_.push(x, y, Date.now());\n    };\n    /**\n     * @return {boolean} Whether we should do kinetic animation.\n     */\n    Kinetic.prototype.end = function () {\n        if (this.points_.length < 6) {\n            // at least 2 points are required (i.e. there must be at least 6 elements\n            // in the array)\n            return false;\n        }\n        var delay = Date.now() - this.delay_;\n        var lastIndex = this.points_.length - 3;\n        if (this.points_[lastIndex + 2] < delay) {\n            // the last tracked point is too old, which means that the user stopped\n            // panning before releasing the map\n            return false;\n        }\n        // get the first point which still falls into the delay time\n        var firstIndex = lastIndex - 3;\n        while (firstIndex > 0 && this.points_[firstIndex + 2] > delay) {\n            firstIndex -= 3;\n        }\n        var duration = this.points_[lastIndex + 2] - this.points_[firstIndex + 2];\n        // we don't want a duration of 0 (divide by zero)\n        // we also make sure the user panned for a duration of at least one frame\n        // (1/60s) to compute sane displacement values\n        if (duration < 1000 / 60) {\n            return false;\n        }\n        var dx = this.points_[lastIndex] - this.points_[firstIndex];\n        var dy = this.points_[lastIndex + 1] - this.points_[firstIndex + 1];\n        this.angle_ = Math.atan2(dy, dx);\n        this.initialVelocity_ = Math.sqrt(dx * dx + dy * dy) / duration;\n        return this.initialVelocity_ > this.minVelocity_;\n    };\n    /**\n     * @return {number} Total distance travelled (pixels).\n     */\n    Kinetic.prototype.getDistance = function () {\n        return (this.minVelocity_ - this.initialVelocity_) / this.decay_;\n    };\n    /**\n     * @return {number} Angle of the kinetic panning animation (radians).\n     */\n    Kinetic.prototype.getAngle = function () {\n        return this.angle_;\n    };\n    return Kinetic;\n}());\nexport default Kinetic;\n//# sourceMappingURL=Kinetic.js.map","/**\n * @module ol/interaction/Property\n */\n/**\n * @enum {string}\n */\nexport default {\n    ACTIVE: 'active'\n};\n//# sourceMappingURL=Property.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/Interaction\n */\nimport BaseObject from '../Object.js';\nimport { easeOut, linear } from '../easing.js';\nimport InteractionProperty from './Property.js';\n/**\n * Object literal with config options for interactions.\n * @typedef {Object} InteractionOptions\n * @property {function(import(\"../MapBrowserEvent.js\").default):boolean} handleEvent\n * Method called by the map to notify the interaction that a browser event was\n * dispatched to the map. If the function returns a falsy value, propagation of\n * the event to other interactions in the map's interactions chain will be\n * prevented (this includes functions with no explicit return). The interactions\n * are traversed in reverse order of the interactions collection of the map.\n */\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * User actions that change the state of the map. Some are similar to controls,\n * but are not associated with a DOM element.\n * For example, {@link module:ol/interaction/KeyboardZoom~KeyboardZoom} is\n * functionally the same as {@link module:ol/control/Zoom~Zoom}, but triggered\n * by a keyboard event not a button element event.\n * Although interactions do not have a DOM element, some of them do render\n * vectors and so are visible on the screen.\n * @api\n */\nvar Interaction = /** @class */ (function (_super) {\n    __extends(Interaction, _super);\n    /**\n     * @param {InteractionOptions} options Options.\n     */\n    function Interaction(options) {\n        var _this = _super.call(this) || this;\n        if (options.handleEvent) {\n            _this.handleEvent = options.handleEvent;\n        }\n        /**\n         * @private\n         * @type {import(\"../PluggableMap.js\").default}\n         */\n        _this.map_ = null;\n        _this.setActive(true);\n        return _this;\n    }\n    /**\n     * Return whether the interaction is currently active.\n     * @return {boolean} `true` if the interaction is active, `false` otherwise.\n     * @observable\n     * @api\n     */\n    Interaction.prototype.getActive = function () {\n        return /** @type {boolean} */ (this.get(InteractionProperty.ACTIVE));\n    };\n    /**\n     * Get the map associated with this interaction.\n     * @return {import(\"../PluggableMap.js\").default} Map.\n     * @api\n     */\n    Interaction.prototype.getMap = function () {\n        return this.map_;\n    };\n    /**\n     * Handles the {@link module:ol/MapBrowserEvent map browser event}.\n     * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n     * @return {boolean} `false` to stop event propagation.\n     * @api\n     */\n    Interaction.prototype.handleEvent = function (mapBrowserEvent) {\n        return true;\n    };\n    /**\n     * Activate or deactivate the interaction.\n     * @param {boolean} active Active.\n     * @observable\n     * @api\n     */\n    Interaction.prototype.setActive = function (active) {\n        this.set(InteractionProperty.ACTIVE, active);\n    };\n    /**\n     * Remove the interaction from its current map and attach it to the new map.\n     * Subclasses may set up event handlers to get notified about changes to\n     * the map here.\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     */\n    Interaction.prototype.setMap = function (map) {\n        this.map_ = map;\n    };\n    return Interaction;\n}(BaseObject));\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {import(\"../coordinate.js\").Coordinate} delta Delta.\n * @param {number=} opt_duration Duration.\n */\nexport function pan(view, delta, opt_duration) {\n    var currentCenter = view.getCenterInternal();\n    if (currentCenter) {\n        var center = [currentCenter[0] + delta[0], currentCenter[1] + delta[1]];\n        view.animateInternal({\n            duration: opt_duration !== undefined ? opt_duration : 250,\n            easing: linear,\n            center: view.getConstrainedCenter(center)\n        });\n    }\n}\n/**\n * @param {import(\"../View.js\").default} view View.\n * @param {number} delta Delta from previous zoom level.\n * @param {import(\"../coordinate.js\").Coordinate=} opt_anchor Anchor coordinate in the user projection.\n * @param {number=} opt_duration Duration.\n */\nexport function zoomByDelta(view, delta, opt_anchor, opt_duration) {\n    var currentZoom = view.getZoom();\n    if (currentZoom === undefined) {\n        return;\n    }\n    var newZoom = view.getConstrainedZoom(currentZoom + delta);\n    var newResolution = view.getResolutionForZoom(newZoom);\n    if (view.getAnimating()) {\n        view.cancelAnimations();\n    }\n    view.animate({\n        resolution: newResolution,\n        anchor: opt_anchor,\n        duration: opt_duration !== undefined ? opt_duration : 250,\n        easing: easeOut\n    });\n}\nexport default Interaction;\n//# sourceMappingURL=Interaction.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/DoubleClickZoom\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport Interaction, { zoomByDelta } from './Interaction.js';\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {number} [delta=1] The zoom delta applied on each double click.\n */\n/**\n * @classdesc\n * Allows the user to zoom by double-clicking on the map.\n * @api\n */\nvar DoubleClickZoom = /** @class */ (function (_super) {\n    __extends(DoubleClickZoom, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function DoubleClickZoom(opt_options) {\n        var _this = _super.call(this, {\n            handleEvent: handleEvent\n        }) || this;\n        var options = opt_options ? opt_options : {};\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.delta_ = options.delta ? options.delta : 1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        return _this;\n    }\n    return DoubleClickZoom;\n}(Interaction));\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} (if it was a\n * doubleclick) and eventually zooms the map.\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {DoubleClickZoom}\n */\nfunction handleEvent(mapBrowserEvent) {\n    var stopEvent = false;\n    if (mapBrowserEvent.type == MapBrowserEventType.DBLCLICK) {\n        var browserEvent = /** @type {MouseEvent} */ (mapBrowserEvent.originalEvent);\n        var map = mapBrowserEvent.map;\n        var anchor = mapBrowserEvent.coordinate;\n        var delta = browserEvent.shiftKey ? -this.delta_ : this.delta_;\n        var view = map.getView();\n        zoomByDelta(view, delta, anchor, this.duration_);\n        mapBrowserEvent.preventDefault();\n        stopEvent = true;\n    }\n    return !stopEvent;\n}\nexport default DoubleClickZoom;\n//# sourceMappingURL=DoubleClickZoom.js.map","/**\n * @module ol/events/condition\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport { assert } from '../asserts.js';\nimport { TRUE, FALSE } from '../functions.js';\nimport { WEBKIT, MAC } from '../has.js';\n/**\n * A function that takes an {@link module:ol/MapBrowserEvent} and returns a\n * `{boolean}`. If the condition is met, true should be returned.\n *\n * @typedef {function(this: ?, import(\"../MapBrowserEvent.js\").default): boolean} Condition\n */\n/**\n * Return `true` if only the alt-key is pressed, `false` otherwise (e.g. when\n * additionally the shift-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the alt key is pressed.\n * @api\n */\nexport var altKeyOnly = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    return (originalEvent.altKey &&\n        !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n        !originalEvent.shiftKey);\n};\n/**\n * Return `true` if only the alt-key and shift-key is pressed, `false` otherwise\n * (e.g. when additionally the platform-modifier-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the alt and shift keys are pressed.\n * @api\n */\nexport var altShiftKeysOnly = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    return (originalEvent.altKey &&\n        !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n        originalEvent.shiftKey);\n};\n/**\n * Return `true` if the map has the focus. This condition requires a map target\n * element with a `tabindex` attribute, e.g. `<div id=\"map\" tabindex=\"1\">`.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} event Map browser event.\n * @return {boolean} The map has the focus.\n * @api\n */\nexport var focus = function (event) {\n    return event.target.getTargetElement() === document.activeElement;\n};\n/**\n * Return always true.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True.\n * @api\n */\nexport var always = TRUE;\n/**\n * Return `true` if the event is a `click` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `click` event.\n * @api\n */\nexport var click = function (mapBrowserEvent) {\n    return mapBrowserEvent.type == MapBrowserEventType.CLICK;\n};\n/**\n * Return `true` if the event has an \"action\"-producing mouse button.\n *\n * By definition, this includes left-click on windows/linux, and left-click\n * without the ctrl key on Macs.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} The result.\n */\nexport var mouseActionButton = function (mapBrowserEvent) {\n    var originalEvent = /** @type {MouseEvent} */ (mapBrowserEvent.originalEvent);\n    return originalEvent.button == 0 &&\n        !(WEBKIT && MAC && originalEvent.ctrlKey);\n};\n/**\n * Return always false.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} False.\n * @api\n */\nexport var never = FALSE;\n/**\n * Return `true` if the browser event is a `pointermove` event, `false`\n * otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the browser event is a `pointermove` event.\n * @api\n */\nexport var pointerMove = function (mapBrowserEvent) {\n    return mapBrowserEvent.type == 'pointermove';\n};\n/**\n * Return `true` if the event is a map `singleclick` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `singleclick` event.\n * @api\n */\nexport var singleClick = function (mapBrowserEvent) {\n    return mapBrowserEvent.type == MapBrowserEventType.SINGLECLICK;\n};\n/**\n * Return `true` if the event is a map `dblclick` event, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event is a map `dblclick` event.\n * @api\n */\nexport var doubleClick = function (mapBrowserEvent) {\n    return mapBrowserEvent.type == MapBrowserEventType.DBLCLICK;\n};\n/**\n * Return `true` if no modifier key (alt-, shift- or platform-modifier-key) is\n * pressed.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True only if there no modifier keys are pressed.\n * @api\n */\nexport var noModifierKeys = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    return (!originalEvent.altKey &&\n        !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n        !originalEvent.shiftKey);\n};\n/**\n * Return `true` if only the platform-modifier-key (the meta-key on Mac,\n * ctrl-key otherwise) is pressed, `false` otherwise (e.g. when additionally\n * the shift-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the platform modifier key is pressed.\n * @api\n */\nexport var platformModifierKeyOnly = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    return !originalEvent.altKey &&\n        (MAC ? originalEvent.metaKey : originalEvent.ctrlKey) &&\n        !originalEvent.shiftKey;\n};\n/**\n * Return `true` if only the shift-key is pressed, `false` otherwise (e.g. when\n * additionally the alt-key is pressed).\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if only the shift key is pressed.\n * @api\n */\nexport var shiftKeyOnly = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    return (!originalEvent.altKey &&\n        !(originalEvent.metaKey || originalEvent.ctrlKey) &&\n        originalEvent.shiftKey);\n};\n/**\n * Return `true` if the target element is not editable, i.e. not a `<input>`-,\n * `<select>`- or `<textarea>`-element, `false` otherwise.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True only if the target element is not editable.\n * @api\n */\nexport var targetNotEditable = function (mapBrowserEvent) {\n    var originalEvent = /** @type {KeyboardEvent|MouseEvent|TouchEvent} */ (mapBrowserEvent.originalEvent);\n    var tagName = /** @type {Element} */ (originalEvent.target).tagName;\n    return tagName !== 'INPUT' && tagName !== 'SELECT' && tagName !== 'TEXTAREA';\n};\n/**\n * Return `true` if the event originates from a mouse device.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a mouse device.\n * @api\n */\nexport var mouseOnly = function (mapBrowserEvent) {\n    var pointerEvent = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n    assert(pointerEvent !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n    // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType\n    return pointerEvent.pointerType == 'mouse';\n};\n/**\n * Return `true` if the event originates from a touchable device.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a touchable device.\n * @api\n */\nexport var touchOnly = function (mapBrowserEvent) {\n    var pointerEvt = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n    assert(pointerEvt !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n    // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType\n    return pointerEvt.pointerType === 'touch';\n};\n/**\n * Return `true` if the event originates from a digital pen.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a digital pen.\n * @api\n */\nexport var penOnly = function (mapBrowserEvent) {\n    var pointerEvt = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n    assert(pointerEvt !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n    // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType\n    return pointerEvt.pointerType === 'pen';\n};\n/**\n * Return `true` if the event originates from a primary pointer in\n * contact with the surface or if the left mouse button is pressed.\n * See http://www.w3.org/TR/pointerevents/#button-states.\n *\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} True if the event originates from a primary pointer.\n * @api\n */\nexport var primaryAction = function (mapBrowserEvent) {\n    var pointerEvent = /** @type {import(\"../MapBrowserPointerEvent\").default} */ (mapBrowserEvent).pointerEvent;\n    assert(pointerEvent !== undefined, 56); // mapBrowserEvent must originate from a pointer event\n    return pointerEvent.isPrimary && pointerEvent.button === 0;\n};\n//# sourceMappingURL=condition.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/Pointer\n */\nimport MapBrowserEventType from '../MapBrowserEventType.js';\nimport Interaction from './Interaction.js';\nimport { getValues } from '../obj.js';\n/**\n * @typedef {Object} Options\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default):boolean} [handleDownEvent]\n * Function handling \"down\" events. If the function returns `true` then a drag\n * sequence is started.\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default)} [handleDragEvent]\n * Function handling \"drag\" events. This function is called on \"move\" events\n * during a drag sequence.\n * @property {function(import(\"../MapBrowserEvent.js\").default):boolean} [handleEvent]\n * Method called by the map to notify the interaction that a browser event was\n * dispatched to the map. The function may return `false` to prevent the\n * propagation of the event to other interactions in the map's interactions\n * chain.\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default)} [handleMoveEvent]\n * Function handling \"move\" events. This function is called on \"move\" events.\n * This functions is also called during a drag sequence, so during a drag\n * sequence both the `handleDragEvent` function and this function are called.\n * If `handleDownEvent` is defined and it returns true this function will not\n * be called during a drag sequence.\n * @property {function(import(\"../MapBrowserPointerEvent.js\").default):boolean} [handleUpEvent]\n *  Function handling \"up\" events. If the function returns `false` then the\n * current drag sequence is stopped.\n * @property {function(boolean):boolean} [stopDown]\n * Should the down event be propagated to other interactions, or should be\n * stopped?\n */\n/**\n * @classdesc\n * Base class that calls user-defined functions on `down`, `move` and `up`\n * events. This class also manages \"drag sequences\".\n *\n * When the `handleDownEvent` user function returns `true` a drag sequence is\n * started. During a drag sequence the `handleDragEvent` user function is\n * called on `move` events. The drag sequence ends when the `handleUpEvent`\n * user function is called and returns `false`.\n * @api\n */\nvar PointerInteraction = /** @class */ (function (_super) {\n    __extends(PointerInteraction, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function PointerInteraction(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, /** @type {import(\"./Interaction.js\").InteractionOptions} */ (options)) || this;\n        if (options.handleDownEvent) {\n            _this.handleDownEvent = options.handleDownEvent;\n        }\n        if (options.handleDragEvent) {\n            _this.handleDragEvent = options.handleDragEvent;\n        }\n        if (options.handleMoveEvent) {\n            _this.handleMoveEvent = options.handleMoveEvent;\n        }\n        if (options.handleUpEvent) {\n            _this.handleUpEvent = options.handleUpEvent;\n        }\n        if (options.stopDown) {\n            _this.stopDown = options.stopDown;\n        }\n        /**\n         * @type {boolean}\n         * @protected\n         */\n        _this.handlingDownUpSequence = false;\n        /**\n         * @type {!Object<string, PointerEvent>}\n         * @private\n         */\n        _this.trackedPointers_ = {};\n        /**\n         * @type {Array<PointerEvent>}\n         * @protected\n         */\n        _this.targetPointers = [];\n        return _this;\n    }\n    /**\n     * Returns the current number of pointers involved in the interaction,\n     * e.g. `2` when two fingers are used.\n     * @return {number} The number of pointers.\n     * @api\n     */\n    PointerInteraction.prototype.getPointerCount = function () {\n        return this.targetPointers.length;\n    };\n    /**\n     * Handle pointer down events.\n     * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n     * @return {boolean} If the event was consumed.\n     * @protected\n     */\n    PointerInteraction.prototype.handleDownEvent = function (mapBrowserEvent) {\n        return false;\n    };\n    /**\n     * Handle pointer drag events.\n     * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n     * @protected\n     */\n    PointerInteraction.prototype.handleDragEvent = function (mapBrowserEvent) { };\n    /**\n     * Handles the {@link module:ol/MapBrowserEvent map browser event} and may call into\n     * other functions, if event sequences like e.g. 'drag' or 'down-up' etc. are\n     * detected.\n     * @override\n     * @api\n     */\n    PointerInteraction.prototype.handleEvent = function (mapBrowserEvent) {\n        if (!( /** @type {import(\"../MapBrowserPointerEvent.js\").default} */(mapBrowserEvent).pointerEvent)) {\n            return true;\n        }\n        var stopEvent = false;\n        this.updateTrackedPointers_(mapBrowserEvent);\n        if (this.handlingDownUpSequence) {\n            if (mapBrowserEvent.type == MapBrowserEventType.POINTERDRAG) {\n                this.handleDragEvent(mapBrowserEvent);\n            }\n            else if (mapBrowserEvent.type == MapBrowserEventType.POINTERUP) {\n                var handledUp = this.handleUpEvent(mapBrowserEvent);\n                this.handlingDownUpSequence = handledUp && this.targetPointers.length > 0;\n            }\n        }\n        else {\n            if (mapBrowserEvent.type == MapBrowserEventType.POINTERDOWN) {\n                var handled = this.handleDownEvent(mapBrowserEvent);\n                this.handlingDownUpSequence = handled;\n                stopEvent = this.stopDown(handled);\n            }\n            else if (mapBrowserEvent.type == MapBrowserEventType.POINTERMOVE) {\n                this.handleMoveEvent(mapBrowserEvent);\n            }\n        }\n        return !stopEvent;\n    };\n    /**\n     * Handle pointer move events.\n     * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n     * @protected\n     */\n    PointerInteraction.prototype.handleMoveEvent = function (mapBrowserEvent) { };\n    /**\n     * Handle pointer up events.\n     * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n     * @return {boolean} If the event was consumed.\n     * @protected\n     */\n    PointerInteraction.prototype.handleUpEvent = function (mapBrowserEvent) {\n        return false;\n    };\n    /**\n     * This function is used to determine if \"down\" events should be propagated\n     * to other interactions or should be stopped.\n     * @param {boolean} handled Was the event handled by the interaction?\n     * @return {boolean} Should the `down` event be stopped?\n     */\n    PointerInteraction.prototype.stopDown = function (handled) {\n        return handled;\n    };\n    /**\n     * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n     * @private\n     */\n    PointerInteraction.prototype.updateTrackedPointers_ = function (mapBrowserEvent) {\n        if (isPointerDraggingEvent(mapBrowserEvent)) {\n            var event_1 = mapBrowserEvent.pointerEvent;\n            var id = event_1.pointerId.toString();\n            if (mapBrowserEvent.type == MapBrowserEventType.POINTERUP) {\n                delete this.trackedPointers_[id];\n            }\n            else if (mapBrowserEvent.type ==\n                MapBrowserEventType.POINTERDOWN) {\n                this.trackedPointers_[id] = event_1;\n            }\n            else if (id in this.trackedPointers_) {\n                // update only when there was a pointerdown event for this pointer\n                this.trackedPointers_[id] = event_1;\n            }\n            this.targetPointers = getValues(this.trackedPointers_);\n        }\n    };\n    return PointerInteraction;\n}(Interaction));\n/**\n * @param {Array<PointerEvent>} pointerEvents List of events.\n * @return {import(\"../pixel.js\").Pixel} Centroid pixel.\n */\nexport function centroid(pointerEvents) {\n    var length = pointerEvents.length;\n    var clientX = 0;\n    var clientY = 0;\n    for (var i = 0; i < length; i++) {\n        clientX += pointerEvents[i].clientX;\n        clientY += pointerEvents[i].clientY;\n    }\n    return [clientX / length, clientY / length];\n}\n/**\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Event.\n * @return {boolean} Whether the event is a pointerdown, pointerdrag\n *     or pointerup event.\n */\nfunction isPointerDraggingEvent(mapBrowserEvent) {\n    var type = mapBrowserEvent.type;\n    return type === MapBrowserEventType.POINTERDOWN ||\n        type === MapBrowserEventType.POINTERDRAG ||\n        type === MapBrowserEventType.POINTERUP;\n}\nexport default PointerInteraction;\n//# sourceMappingURL=Pointer.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/DragPan\n */\nimport { scale as scaleCoordinate, rotate as rotateCoordinate } from '../coordinate.js';\nimport { easeOut } from '../easing.js';\nimport { noModifierKeys, primaryAction, focus } from '../events/condition.js';\nimport { FALSE } from '../functions.js';\nimport PointerInteraction, { centroid as centroidFromPointers } from './Pointer.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~noModifierKeys} and {@link module:ol/events/condition~primaryAction}.\n * In addition, if there is a `tabindex` attribute on the map element,\n * {@link module:ol/events/condition~focus} will also be applied.\n * @property {import(\"../Kinetic.js\").default} [kinetic] Kinetic inertia to apply to the pan.\n */\n/**\n * @classdesc\n * Allows the user to pan the map by dragging the map.\n * @api\n */\nvar DragPan = /** @class */ (function (_super) {\n    __extends(DragPan, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function DragPan(opt_options) {\n        var _this = _super.call(this, {\n            stopDown: FALSE\n        }) || this;\n        var options = opt_options ? opt_options : {};\n        /**\n         * @private\n         * @type {import(\"../Kinetic.js\").default|undefined}\n         */\n        _this.kinetic_ = options.kinetic;\n        /**\n         * @type {import(\"../pixel.js\").Pixel}\n         */\n        _this.lastCentroid = null;\n        /**\n         * @type {number}\n         */\n        _this.lastPointersCount_;\n        /**\n         * @type {boolean}\n         */\n        _this.panning_ = false;\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition ? options.condition : defaultCondition;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.noKinetic_ = false;\n        return _this;\n    }\n    /**\n     * @private\n     * @param {import(\"../MapBrowserEvent\").default} mapBrowserEvent Event.\n     * @return {boolean} Condition passes.\n     */\n    DragPan.prototype.conditionInternal_ = function (mapBrowserEvent) {\n        var pass = true;\n        if (mapBrowserEvent.map.getTargetElement().hasAttribute('tabindex')) {\n            pass = focus(mapBrowserEvent);\n        }\n        return pass && this.condition_(mapBrowserEvent);\n    };\n    /**\n     * @inheritDoc\n     */\n    DragPan.prototype.handleDragEvent = function (mapBrowserEvent) {\n        if (!this.panning_) {\n            this.panning_ = true;\n            this.getMap().getView().beginInteraction();\n        }\n        var targetPointers = this.targetPointers;\n        var centroid = centroidFromPointers(targetPointers);\n        if (targetPointers.length == this.lastPointersCount_) {\n            if (this.kinetic_) {\n                this.kinetic_.update(centroid[0], centroid[1]);\n            }\n            if (this.lastCentroid) {\n                var delta = [\n                    this.lastCentroid[0] - centroid[0],\n                    centroid[1] - this.lastCentroid[1]\n                ];\n                var map = mapBrowserEvent.map;\n                var view = map.getView();\n                scaleCoordinate(delta, view.getResolution());\n                rotateCoordinate(delta, view.getRotation());\n                view.adjustCenterInternal(delta);\n            }\n        }\n        else if (this.kinetic_) {\n            // reset so we don't overestimate the kinetic energy after\n            // after one finger down, tiny drag, second finger down\n            this.kinetic_.begin();\n        }\n        this.lastCentroid = centroid;\n        this.lastPointersCount_ = targetPointers.length;\n        mapBrowserEvent.originalEvent.preventDefault();\n    };\n    /**\n     * @inheritDoc\n     */\n    DragPan.prototype.handleUpEvent = function (mapBrowserEvent) {\n        var map = mapBrowserEvent.map;\n        var view = map.getView();\n        if (this.targetPointers.length === 0) {\n            if (!this.noKinetic_ && this.kinetic_ && this.kinetic_.end()) {\n                var distance = this.kinetic_.getDistance();\n                var angle = this.kinetic_.getAngle();\n                var center = view.getCenterInternal();\n                var centerpx = map.getPixelFromCoordinateInternal(center);\n                var dest = map.getCoordinateFromPixelInternal([\n                    centerpx[0] - distance * Math.cos(angle),\n                    centerpx[1] - distance * Math.sin(angle)\n                ]);\n                view.animateInternal({\n                    center: view.getConstrainedCenter(dest),\n                    duration: 500,\n                    easing: easeOut\n                });\n            }\n            if (this.panning_) {\n                this.panning_ = false;\n                view.endInteraction();\n            }\n            return false;\n        }\n        else {\n            if (this.kinetic_) {\n                // reset so we don't overestimate the kinetic energy after\n                // after one finger up, tiny drag, second finger up\n                this.kinetic_.begin();\n            }\n            this.lastCentroid = null;\n            return true;\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    DragPan.prototype.handleDownEvent = function (mapBrowserEvent) {\n        if (this.targetPointers.length > 0 && this.conditionInternal_(mapBrowserEvent)) {\n            var map = mapBrowserEvent.map;\n            var view = map.getView();\n            this.lastCentroid = null;\n            // stop any current animation\n            if (view.getAnimating()) {\n                view.cancelAnimations();\n            }\n            if (this.kinetic_) {\n                this.kinetic_.begin();\n            }\n            // No kinetic as soon as more than one pointer on the screen is\n            // detected. This is to prevent nasty pans after pinch.\n            this.noKinetic_ = this.targetPointers.length > 1;\n            return true;\n        }\n        else {\n            return false;\n        }\n    };\n    return DragPan;\n}(PointerInteraction));\n/**\n * @param {import(\"../MapBrowserPointerEvent.js\").default} mapBrowserEvent Browser event.\n * @return {boolean} Combined condition result.\n */\nfunction defaultCondition(mapBrowserEvent) {\n    return noModifierKeys(mapBrowserEvent) && primaryAction(mapBrowserEvent);\n}\nexport default DragPan;\n//# sourceMappingURL=DragPan.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/DragRotate\n */\nimport { disable } from '../rotationconstraint.js';\nimport { altShiftKeysOnly, mouseOnly, mouseActionButton } from '../events/condition.js';\nimport { FALSE } from '../functions.js';\nimport PointerInteraction from './Pointer.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an\n * {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~altShiftKeysOnly}.\n * @property {number} [duration=250] Animation duration in milliseconds.\n */\n/**\n * @classdesc\n * Allows the user to rotate the map by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when the alt and shift keys are held down.\n *\n * This interaction is only supported for mouse devices.\n * @api\n */\nvar DragRotate = /** @class */ (function (_super) {\n    __extends(DragRotate, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function DragRotate(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            stopDown: FALSE\n        }) || this;\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition ? options.condition : altShiftKeysOnly;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.lastAngle_ = undefined;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    DragRotate.prototype.handleDragEvent = function (mapBrowserEvent) {\n        if (!mouseOnly(mapBrowserEvent)) {\n            return;\n        }\n        var map = mapBrowserEvent.map;\n        var view = map.getView();\n        if (view.getConstraints().rotation === disable) {\n            return;\n        }\n        var size = map.getSize();\n        var offset = mapBrowserEvent.pixel;\n        var theta = Math.atan2(size[1] / 2 - offset[1], offset[0] - size[0] / 2);\n        if (this.lastAngle_ !== undefined) {\n            var delta = theta - this.lastAngle_;\n            view.adjustRotationInternal(-delta);\n        }\n        this.lastAngle_ = theta;\n    };\n    /**\n     * @inheritDoc\n     */\n    DragRotate.prototype.handleUpEvent = function (mapBrowserEvent) {\n        if (!mouseOnly(mapBrowserEvent)) {\n            return true;\n        }\n        var map = mapBrowserEvent.map;\n        var view = map.getView();\n        view.endInteraction(this.duration_);\n        return false;\n    };\n    /**\n     * @inheritDoc\n     */\n    DragRotate.prototype.handleDownEvent = function (mapBrowserEvent) {\n        if (!mouseOnly(mapBrowserEvent)) {\n            return false;\n        }\n        if (mouseActionButton(mapBrowserEvent) && this.condition_(mapBrowserEvent)) {\n            var map = mapBrowserEvent.map;\n            map.getView().beginInteraction();\n            this.lastAngle_ = undefined;\n            return true;\n        }\n        else {\n            return false;\n        }\n    };\n    return DragRotate;\n}(PointerInteraction));\nexport default DragRotate;\n//# sourceMappingURL=DragRotate.js.map","/**\n * @module ol/render/Box\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport Disposable from '../Disposable.js';\nimport Polygon from '../geom/Polygon.js';\nvar RenderBox = /** @class */ (function (_super) {\n    __extends(RenderBox, _super);\n    /**\n     * @param {string} className CSS class name.\n     */\n    function RenderBox(className) {\n        var _this = _super.call(this) || this;\n        /**\n         * @type {import(\"../geom/Polygon.js\").default}\n         * @private\n         */\n        _this.geometry_ = null;\n        /**\n         * @type {HTMLDivElement}\n         * @private\n         */\n        _this.element_ = document.createElement('div');\n        _this.element_.style.position = 'absolute';\n        _this.element_.className = 'ol-box ' + className;\n        /**\n         * @private\n         * @type {import(\"../PluggableMap.js\").default}\n         */\n        _this.map_ = null;\n        /**\n         * @private\n         * @type {import(\"../pixel.js\").Pixel}\n         */\n        _this.startPixel_ = null;\n        /**\n         * @private\n         * @type {import(\"../pixel.js\").Pixel}\n         */\n        _this.endPixel_ = null;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    RenderBox.prototype.disposeInternal = function () {\n        this.setMap(null);\n    };\n    /**\n     * @private\n     */\n    RenderBox.prototype.render_ = function () {\n        var startPixel = this.startPixel_;\n        var endPixel = this.endPixel_;\n        var px = 'px';\n        var style = this.element_.style;\n        style.left = Math.min(startPixel[0], endPixel[0]) + px;\n        style.top = Math.min(startPixel[1], endPixel[1]) + px;\n        style.width = Math.abs(endPixel[0] - startPixel[0]) + px;\n        style.height = Math.abs(endPixel[1] - startPixel[1]) + px;\n    };\n    /**\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     */\n    RenderBox.prototype.setMap = function (map) {\n        if (this.map_) {\n            this.map_.getOverlayContainer().removeChild(this.element_);\n            var style = this.element_.style;\n            style.left = 'inherit';\n            style.top = 'inherit';\n            style.width = 'inherit';\n            style.height = 'inherit';\n        }\n        this.map_ = map;\n        if (this.map_) {\n            this.map_.getOverlayContainer().appendChild(this.element_);\n        }\n    };\n    /**\n     * @param {import(\"../pixel.js\").Pixel} startPixel Start pixel.\n     * @param {import(\"../pixel.js\").Pixel} endPixel End pixel.\n     */\n    RenderBox.prototype.setPixels = function (startPixel, endPixel) {\n        this.startPixel_ = startPixel;\n        this.endPixel_ = endPixel;\n        this.createOrUpdateGeometry();\n        this.render_();\n    };\n    /**\n     * Creates or updates the cached geometry.\n     */\n    RenderBox.prototype.createOrUpdateGeometry = function () {\n        var startPixel = this.startPixel_;\n        var endPixel = this.endPixel_;\n        var pixels = [\n            startPixel,\n            [startPixel[0], endPixel[1]],\n            endPixel,\n            [endPixel[0], startPixel[1]]\n        ];\n        var coordinates = pixels.map(this.map_.getCoordinateFromPixelInternal, this.map_);\n        // close the polygon\n        coordinates[4] = coordinates[0].slice();\n        if (!this.geometry_) {\n            this.geometry_ = new Polygon([coordinates]);\n        }\n        else {\n            this.geometry_.setCoordinates([coordinates]);\n        }\n    };\n    /**\n     * @return {import(\"../geom/Polygon.js\").default} Geometry.\n     */\n    RenderBox.prototype.getGeometry = function () {\n        return this.geometry_;\n    };\n    return RenderBox;\n}(Disposable));\nexport default RenderBox;\n//# sourceMappingURL=Box.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/DragBox\n */\n// FIXME draw drag box\nimport Event from '../events/Event.js';\nimport { mouseActionButton } from '../events/condition.js';\nimport { VOID } from '../functions.js';\nimport PointerInteraction from './Pointer.js';\nimport RenderBox from '../render/Box.js';\n/**\n * A function that takes a {@link module:ol/MapBrowserEvent} and two\n * {@link module:ol/pixel~Pixel}s and returns a `{boolean}`. If the condition is met,\n * true should be returned.\n * @typedef {function(this: ?, import(\"../MapBrowserEvent.js\").default, import(\"../pixel.js\").Pixel, import(\"../pixel.js\").Pixel):boolean} EndCondition\n */\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-dragbox'] CSS class name for styling the box.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a boolean\n * to indicate whether that event should be handled.\n * Default is {@link ol/events/condition~mouseActionButton}.\n * @property {number} [minArea=64] The minimum area of the box in pixel, this value is used by the default\n * `boxEndCondition` function.\n * @property {EndCondition} [boxEndCondition] A function that takes a {@link module:ol/MapBrowserEvent~MapBrowserEvent} and two\n * {@link module:ol/pixel~Pixel}s to indicate whether a `boxend` event should be fired.\n * Default is `true` if the area of the box is bigger than the `minArea` option.\n * @property {function(this:DragBox, import(\"../MapBrowserEvent.js\").default)} [onBoxEnd] Code to execute just\n * before `boxend` is fired.\n */\n/**\n * @enum {string}\n */\nvar DragBoxEventType = {\n    /**\n     * Triggered upon drag box start.\n     * @event DragBoxEvent#boxstart\n     * @api\n     */\n    BOXSTART: 'boxstart',\n    /**\n     * Triggered on drag when box is active.\n     * @event DragBoxEvent#boxdrag\n     * @api\n     */\n    BOXDRAG: 'boxdrag',\n    /**\n     * Triggered upon drag box end.\n     * @event DragBoxEvent#boxend\n     * @api\n     */\n    BOXEND: 'boxend'\n};\n/**\n * @classdesc\n * Events emitted by {@link module:ol/interaction/DragBox~DragBox} instances are instances of\n * this type.\n */\nvar DragBoxEvent = /** @class */ (function (_super) {\n    __extends(DragBoxEvent, _super);\n    /**\n     * @param {string} type The event type.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate The event coordinate.\n     * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Originating event.\n     */\n    function DragBoxEvent(type, coordinate, mapBrowserEvent) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The coordinate of the drag event.\n         * @const\n         * @type {import(\"../coordinate.js\").Coordinate}\n         * @api\n         */\n        _this.coordinate = coordinate;\n        /**\n         * @const\n         * @type {import(\"../MapBrowserEvent.js\").default}\n         * @api\n         */\n        _this.mapBrowserEvent = mapBrowserEvent;\n        return _this;\n    }\n    return DragBoxEvent;\n}(Event));\n/**\n * @classdesc\n * Allows the user to draw a vector box by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when the shift or other key is held down. This is used, for example,\n * for zooming to a specific area of the map\n * (see {@link module:ol/interaction/DragZoom~DragZoom} and\n * {@link module:ol/interaction/DragRotateAndZoom}).\n *\n * @fires DragBoxEvent\n * @api\n */\nvar DragBox = /** @class */ (function (_super) {\n    __extends(DragBox, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function DragBox(opt_options) {\n        var _this = _super.call(this) || this;\n        var options = opt_options ? opt_options : {};\n        /**\n         * @type {import(\"../render/Box.js\").default}\n         * @private\n         */\n        _this.box_ = new RenderBox(options.className || 'ol-dragbox');\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.minArea_ = options.minArea !== undefined ? options.minArea : 64;\n        /**\n         * Function to execute just before `onboxend` is fired\n         * @type {function(this:DragBox, import(\"../MapBrowserEvent.js\").default): void}\n         * @private\n         */\n        _this.onBoxEnd_ = options.onBoxEnd ? options.onBoxEnd : VOID;\n        /**\n         * @type {import(\"../pixel.js\").Pixel}\n         * @private\n         */\n        _this.startPixel_ = null;\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition ? options.condition : mouseActionButton;\n        /**\n         * @private\n         * @type {EndCondition}\n         */\n        _this.boxEndCondition_ = options.boxEndCondition ?\n            options.boxEndCondition : _this.defaultBoxEndCondition;\n        return _this;\n    }\n    /**\n     * The default condition for determining whether the boxend event\n     * should fire.\n     * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent The originating MapBrowserEvent\n     *     leading to the box end.\n     * @param {import(\"../pixel.js\").Pixel} startPixel The starting pixel of the box.\n     * @param {import(\"../pixel.js\").Pixel} endPixel The end pixel of the box.\n     * @return {boolean} Whether or not the boxend condition should be fired.\n     */\n    DragBox.prototype.defaultBoxEndCondition = function (mapBrowserEvent, startPixel, endPixel) {\n        var width = endPixel[0] - startPixel[0];\n        var height = endPixel[1] - startPixel[1];\n        return width * width + height * height >= this.minArea_;\n    };\n    /**\n     * Returns geometry of last drawn box.\n     * @return {import(\"../geom/Polygon.js\").default} Geometry.\n     * @api\n     */\n    DragBox.prototype.getGeometry = function () {\n        return this.box_.getGeometry();\n    };\n    /**\n     * @inheritDoc\n     */\n    DragBox.prototype.handleDragEvent = function (mapBrowserEvent) {\n        this.box_.setPixels(this.startPixel_, mapBrowserEvent.pixel);\n        this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXDRAG, mapBrowserEvent.coordinate, mapBrowserEvent));\n    };\n    /**\n     * @inheritDoc\n     */\n    DragBox.prototype.handleUpEvent = function (mapBrowserEvent) {\n        this.box_.setMap(null);\n        if (this.boxEndCondition_(mapBrowserEvent, this.startPixel_, mapBrowserEvent.pixel)) {\n            this.onBoxEnd_(mapBrowserEvent);\n            this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXEND, mapBrowserEvent.coordinate, mapBrowserEvent));\n        }\n        return false;\n    };\n    /**\n     * @inheritDoc\n     */\n    DragBox.prototype.handleDownEvent = function (mapBrowserEvent) {\n        if (this.condition_(mapBrowserEvent)) {\n            this.startPixel_ = mapBrowserEvent.pixel;\n            this.box_.setMap(mapBrowserEvent.map);\n            this.box_.setPixels(this.startPixel_, this.startPixel_);\n            this.dispatchEvent(new DragBoxEvent(DragBoxEventType.BOXSTART, mapBrowserEvent.coordinate, mapBrowserEvent));\n            return true;\n        }\n        else {\n            return false;\n        }\n    };\n    return DragBox;\n}(PointerInteraction));\nexport default DragBox;\n//# sourceMappingURL=DragBox.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/DragZoom\n */\nimport { easeOut } from '../easing.js';\nimport { shiftKeyOnly } from '../events/condition.js';\nimport { createOrUpdateFromCoordinates, getBottomLeft, getCenter, getTopRight, scaleFromCenter } from '../extent.js';\nimport DragBox from './DragBox.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-dragzoom'] CSS class name for styling the\n * box.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled.\n * Default is {@link module:ol/events/condition~shiftKeyOnly}.\n * @property {number} [duration=200] Animation duration in milliseconds.\n * @property {boolean} [out=false] Use interaction for zooming out.\n * @property {number} [minArea=64] The minimum area of the box in pixel, this value is used by the parent default\n * `boxEndCondition` function.\n */\n/**\n * @classdesc\n * Allows the user to zoom the map by clicking and dragging on the map,\n * normally combined with an {@link module:ol/events/condition} that limits\n * it to when a key, shift by default, is held down.\n *\n * To change the style of the box, use CSS and the `.ol-dragzoom` selector, or\n * your custom one configured with `className`.\n * @api\n */\nvar DragZoom = /** @class */ (function (_super) {\n    __extends(DragZoom, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function DragZoom(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var condition = options.condition ? options.condition : shiftKeyOnly;\n        _this = _super.call(this, {\n            condition: condition,\n            className: options.className || 'ol-dragzoom',\n            minArea: options.minArea,\n            onBoxEnd: onBoxEnd\n        }) || this;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 200;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.out_ = options.out !== undefined ? options.out : false;\n        return _this;\n    }\n    return DragZoom;\n}(DragBox));\n/**\n * @this {DragZoom}\n */\nfunction onBoxEnd() {\n    var map = this.getMap();\n    var view = /** @type {!import(\"../View.js\").default} */ (map.getView());\n    var size = /** @type {!import(\"../size.js\").Size} */ (map.getSize());\n    var extent = this.getGeometry().getExtent();\n    if (this.out_) {\n        var mapExtent = view.calculateExtentInternal(size);\n        var boxPixelExtent = createOrUpdateFromCoordinates([\n            map.getPixelFromCoordinateInternal(getBottomLeft(extent)),\n            map.getPixelFromCoordinateInternal(getTopRight(extent))\n        ]);\n        var factor = view.getResolutionForExtentInternal(boxPixelExtent, size);\n        scaleFromCenter(mapExtent, 1 / factor);\n        extent = mapExtent;\n    }\n    var resolution = view.getConstrainedResolution(view.getResolutionForExtentInternal(extent, size));\n    var center = view.getConstrainedCenter(getCenter(extent), resolution);\n    view.animateInternal({\n        resolution: resolution,\n        center: center,\n        duration: this.duration_,\n        easing: easeOut\n    });\n}\nexport default DragZoom;\n//# sourceMappingURL=DragZoom.js.map","/**\n * @module ol/events/KeyCode\n */\n/**\n * @enum {number}\n * @const\n */\nexport default {\n    LEFT: 37,\n    UP: 38,\n    RIGHT: 39,\n    DOWN: 40\n};\n//# sourceMappingURL=KeyCode.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/KeyboardPan\n */\nimport { rotate as rotateCoordinate } from '../coordinate.js';\nimport EventType from '../events/EventType.js';\nimport KeyCode from '../events/KeyCode.js';\nimport { noModifierKeys, targetNotEditable } from '../events/condition.js';\nimport Interaction, { pan } from './Interaction.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~noModifierKeys} and\n * {@link module:ol/events/condition~targetNotEditable}.\n * @property {number} [duration=100] Animation duration in milliseconds.\n * @property {number} [pixelDelta=128] The amount of pixels to pan on each key\n * press.\n */\n/**\n * @classdesc\n * Allows the user to pan the map using keyboard arrows.\n * Note that, although this interaction is by default included in maps,\n * the keys can only be used when browser focus is on the element to which\n * the keyboard events are attached. By default, this is the map div,\n * though you can change this with the `keyboardEventTarget` in\n * {@link module:ol/Map~Map}. `document` never loses focus but, for any other\n * element, focus will have to be on, and returned to, this element if the keys\n * are to function.\n * See also {@link module:ol/interaction/KeyboardZoom~KeyboardZoom}.\n * @api\n */\nvar KeyboardPan = /** @class */ (function (_super) {\n    __extends(KeyboardPan, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function KeyboardPan(opt_options) {\n        var _this = _super.call(this, {\n            handleEvent: handleEvent\n        }) || this;\n        var options = opt_options || {};\n        /**\n         * @private\n         * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Browser event.\n         * @return {boolean} Combined condition result.\n         */\n        _this.defaultCondition_ = function (mapBrowserEvent) {\n            return noModifierKeys(mapBrowserEvent) &&\n                targetNotEditable(mapBrowserEvent);\n        };\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition !== undefined ?\n            options.condition : _this.defaultCondition_;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 100;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.pixelDelta_ = options.pixelDelta !== undefined ?\n            options.pixelDelta : 128;\n        return _this;\n    }\n    return KeyboardPan;\n}(Interaction));\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} if it was a\n * `KeyEvent`, and decides the direction to pan to (if an arrow key was\n * pressed).\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {KeyboardPan}\n */\nfunction handleEvent(mapBrowserEvent) {\n    var stopEvent = false;\n    if (mapBrowserEvent.type == EventType.KEYDOWN) {\n        var keyEvent = /** @type {KeyboardEvent} */ (mapBrowserEvent.originalEvent);\n        var keyCode = keyEvent.keyCode;\n        if (this.condition_(mapBrowserEvent) &&\n            (keyCode == KeyCode.DOWN ||\n                keyCode == KeyCode.LEFT ||\n                keyCode == KeyCode.RIGHT ||\n                keyCode == KeyCode.UP)) {\n            var map = mapBrowserEvent.map;\n            var view = map.getView();\n            var mapUnitsDelta = view.getResolution() * this.pixelDelta_;\n            var deltaX = 0, deltaY = 0;\n            if (keyCode == KeyCode.DOWN) {\n                deltaY = -mapUnitsDelta;\n            }\n            else if (keyCode == KeyCode.LEFT) {\n                deltaX = -mapUnitsDelta;\n            }\n            else if (keyCode == KeyCode.RIGHT) {\n                deltaX = mapUnitsDelta;\n            }\n            else {\n                deltaY = mapUnitsDelta;\n            }\n            var delta = [deltaX, deltaY];\n            rotateCoordinate(delta, view.getRotation());\n            pan(view, delta, this.duration_);\n            mapBrowserEvent.preventDefault();\n            stopEvent = true;\n        }\n    }\n    return !stopEvent;\n}\nexport default KeyboardPan;\n//# sourceMappingURL=KeyboardPan.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/KeyboardZoom\n */\nimport EventType from '../events/EventType.js';\nimport { targetNotEditable } from '../events/condition.js';\nimport Interaction, { zoomByDelta } from './Interaction.js';\n/**\n * @typedef {Object} Options\n * @property {number} [duration=100] Animation duration in milliseconds.\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~targetNotEditable}.\n * @property {number} [delta=1] The zoom level delta on each key press.\n */\n/**\n * @classdesc\n * Allows the user to zoom the map using keyboard + and -.\n * Note that, although this interaction is by default included in maps,\n * the keys can only be used when browser focus is on the element to which\n * the keyboard events are attached. By default, this is the map div,\n * though you can change this with the `keyboardEventTarget` in\n * {@link module:ol/Map~Map}. `document` never loses focus but, for any other\n * element, focus will have to be on, and returned to, this element if the keys\n * are to function.\n * See also {@link module:ol/interaction/KeyboardPan~KeyboardPan}.\n * @api\n */\nvar KeyboardZoom = /** @class */ (function (_super) {\n    __extends(KeyboardZoom, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function KeyboardZoom(opt_options) {\n        var _this = _super.call(this, {\n            handleEvent: handleEvent\n        }) || this;\n        var options = opt_options ? opt_options : {};\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition ? options.condition : targetNotEditable;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.delta_ = options.delta ? options.delta : 1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 100;\n        return _this;\n    }\n    return KeyboardZoom;\n}(Interaction));\n/**\n * Handles the {@link module:ol/MapBrowserEvent map browser event} if it was a\n * `KeyEvent`, and decides whether to zoom in or out (depending on whether the\n * key pressed was '+' or '-').\n * @param {import(\"../MapBrowserEvent.js\").default} mapBrowserEvent Map browser event.\n * @return {boolean} `false` to stop event propagation.\n * @this {KeyboardZoom}\n */\nfunction handleEvent(mapBrowserEvent) {\n    var stopEvent = false;\n    if (mapBrowserEvent.type == EventType.KEYDOWN ||\n        mapBrowserEvent.type == EventType.KEYPRESS) {\n        var keyEvent = /** @type {KeyboardEvent} */ (mapBrowserEvent.originalEvent);\n        var charCode = keyEvent.charCode;\n        if (this.condition_(mapBrowserEvent) &&\n            (charCode == '+'.charCodeAt(0) || charCode == '-'.charCodeAt(0))) {\n            var map = mapBrowserEvent.map;\n            var delta = (charCode == '+'.charCodeAt(0)) ? this.delta_ : -this.delta_;\n            var view = map.getView();\n            zoomByDelta(view, delta, undefined, this.duration_);\n            mapBrowserEvent.preventDefault();\n            stopEvent = true;\n        }\n    }\n    return !stopEvent;\n}\nexport default KeyboardZoom;\n//# sourceMappingURL=KeyboardZoom.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/MouseWheelZoom\n */\nimport { always, focus } from '../events/condition.js';\nimport EventType from '../events/EventType.js';\nimport { DEVICE_PIXEL_RATIO, FIREFOX } from '../has.js';\nimport Interaction, { zoomByDelta } from './Interaction.js';\nimport { clamp } from '../math.js';\n/**\n * @enum {string}\n */\nexport var Mode = {\n    TRACKPAD: 'trackpad',\n    WHEEL: 'wheel'\n};\n/**\n * @typedef {Object} Options\n * @property {import(\"../events/condition.js\").Condition} [condition] A function that\n * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a\n * boolean to indicate whether that event should be handled. Default is\n * {@link module:ol/events/condition~always}.\n * In addition, if there is a `tabindex` attribute on the map element,\n * {@link module:ol/events/condition~focus} will also be applied.\n * @property {number} [maxDelta=1] Maximum mouse wheel delta.\n * @property {number} [duration=250] Animation duration in milliseconds.\n * @property {number} [timeout=80] Mouse wheel timeout duration in milliseconds.\n * @property {boolean} [useAnchor=true] Enable zooming using the mouse's\n * location as the anchor. When set to `false`, zooming in and out will zoom to\n * the center of the screen instead of zooming on the mouse's location.\n */\n/**\n * @classdesc\n * Allows the user to zoom the map by scrolling the mouse wheel.\n * @api\n */\nvar MouseWheelZoom = /** @class */ (function (_super) {\n    __extends(MouseWheelZoom, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function MouseWheelZoom(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, /** @type {import(\"./Interaction.js\").InteractionOptions} */ (options)) || this;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.totalDelta_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.lastDelta_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.maxDelta_ = options.maxDelta !== undefined ? options.maxDelta : 1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.timeout_ = options.timeout !== undefined ? options.timeout : 80;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.useAnchor_ = options.useAnchor !== undefined ? options.useAnchor : true;\n        /**\n         * @private\n         * @type {import(\"../events/condition.js\").Condition}\n         */\n        _this.condition_ = options.condition ? options.condition : always;\n        /**\n         * @private\n         * @type {?import(\"../coordinate.js\").Coordinate}\n         */\n        _this.lastAnchor_ = null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.startTime_ = undefined;\n        /**\n         * @private\n         * @type {?}\n         */\n        _this.timeoutId_;\n        /**\n         * @private\n         * @type {Mode|undefined}\n         */\n        _this.mode_ = undefined;\n        /**\n         * Trackpad events separated by this delay will be considered separate\n         * interactions.\n         * @type {number}\n         */\n        _this.trackpadEventGap_ = 400;\n        /**\n         * @type {?}\n         */\n        _this.trackpadTimeoutId_;\n        /**\n         * The number of delta values per zoom level\n         * @private\n         * @type {number}\n         */\n        _this.deltaPerZoom_ = 300;\n        return _this;\n    }\n    /**\n     * @private\n     * @param {import(\"../MapBrowserEvent\").default} mapBrowserEvent Event.\n     * @return {boolean} Condition passes.\n     */\n    MouseWheelZoom.prototype.conditionInternal_ = function (mapBrowserEvent) {\n        var pass = true;\n        if (mapBrowserEvent.map.getTargetElement().hasAttribute('tabindex')) {\n            pass = focus(mapBrowserEvent);\n        }\n        return pass && this.condition_(mapBrowserEvent);\n    };\n    /**\n     * @private\n     */\n    MouseWheelZoom.prototype.endInteraction_ = function () {\n        this.trackpadTimeoutId_ = undefined;\n        var view = this.getMap().getView();\n        view.endInteraction(undefined, this.lastDelta_ ? (this.lastDelta_ > 0 ? 1 : -1) : 0, this.lastAnchor_);\n    };\n    /**\n     * Handles the {@link module:ol/MapBrowserEvent map browser event} (if it was a mousewheel-event) and eventually\n     * zooms the map.\n     * @override\n     */\n    MouseWheelZoom.prototype.handleEvent = function (mapBrowserEvent) {\n        if (!this.conditionInternal_(mapBrowserEvent)) {\n            return true;\n        }\n        var type = mapBrowserEvent.type;\n        if (type !== EventType.WHEEL) {\n            return true;\n        }\n        mapBrowserEvent.preventDefault();\n        var map = mapBrowserEvent.map;\n        var wheelEvent = /** @type {WheelEvent} */ (mapBrowserEvent.originalEvent);\n        if (this.useAnchor_) {\n            this.lastAnchor_ = mapBrowserEvent.coordinate;\n        }\n        // Delta normalisation inspired by\n        // https://github.com/mapbox/mapbox-gl-js/blob/001c7b9/js/ui/handler/scroll_zoom.js\n        var delta;\n        if (mapBrowserEvent.type == EventType.WHEEL) {\n            delta = wheelEvent.deltaY;\n            if (FIREFOX &&\n                wheelEvent.deltaMode === WheelEvent.DOM_DELTA_PIXEL) {\n                delta /= DEVICE_PIXEL_RATIO;\n            }\n            if (wheelEvent.deltaMode === WheelEvent.DOM_DELTA_LINE) {\n                delta *= 40;\n            }\n        }\n        if (delta === 0) {\n            return false;\n        }\n        else {\n            this.lastDelta_ = delta;\n        }\n        var now = Date.now();\n        if (this.startTime_ === undefined) {\n            this.startTime_ = now;\n        }\n        if (!this.mode_ || now - this.startTime_ > this.trackpadEventGap_) {\n            this.mode_ = Math.abs(delta) < 4 ?\n                Mode.TRACKPAD :\n                Mode.WHEEL;\n        }\n        var view = map.getView();\n        if (this.mode_ === Mode.TRACKPAD && !view.getConstrainResolution()) {\n            if (this.trackpadTimeoutId_) {\n                clearTimeout(this.trackpadTimeoutId_);\n            }\n            else {\n                if (view.getAnimating()) {\n                    view.cancelAnimations();\n                }\n                view.beginInteraction();\n            }\n            this.trackpadTimeoutId_ = setTimeout(this.endInteraction_.bind(this), this.timeout_);\n            view.adjustZoom(-delta / this.deltaPerZoom_, this.lastAnchor_);\n            this.startTime_ = now;\n            return false;\n        }\n        this.totalDelta_ += delta;\n        var timeLeft = Math.max(this.timeout_ - (now - this.startTime_), 0);\n        clearTimeout(this.timeoutId_);\n        this.timeoutId_ = setTimeout(this.handleWheelZoom_.bind(this, map), timeLeft);\n        return false;\n    };\n    /**\n     * @private\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     */\n    MouseWheelZoom.prototype.handleWheelZoom_ = function (map) {\n        var view = map.getView();\n        if (view.getAnimating()) {\n            view.cancelAnimations();\n        }\n        var delta = -clamp(this.totalDelta_, -this.maxDelta_ * this.deltaPerZoom_, this.maxDelta_ * this.deltaPerZoom_) / this.deltaPerZoom_;\n        if (view.getConstrainResolution()) {\n            // view has a zoom constraint, zoom by 1\n            delta = delta ? delta > 0 ? 1 : -1 : 0;\n        }\n        zoomByDelta(view, delta, this.lastAnchor_, this.duration_);\n        this.mode_ = undefined;\n        this.totalDelta_ = 0;\n        this.lastAnchor_ = null;\n        this.startTime_ = undefined;\n        this.timeoutId_ = undefined;\n    };\n    /**\n     * Enable or disable using the mouse's location as an anchor when zooming\n     * @param {boolean} useAnchor true to zoom to the mouse's location, false\n     * to zoom to the center of the map\n     * @api\n     */\n    MouseWheelZoom.prototype.setMouseAnchor = function (useAnchor) {\n        this.useAnchor_ = useAnchor;\n        if (!useAnchor) {\n            this.lastAnchor_ = null;\n        }\n    };\n    return MouseWheelZoom;\n}(Interaction));\nexport default MouseWheelZoom;\n//# sourceMappingURL=MouseWheelZoom.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/PinchRotate\n */\nimport { FALSE } from '../functions.js';\nimport PointerInteraction, { centroid as centroidFromPointers } from './Pointer.js';\nimport { disable } from '../rotationconstraint.js';\n/**\n * @typedef {Object} Options\n * @property {number} [duration=250] The duration of the animation in\n * milliseconds.\n * @property {number} [threshold=0.3] Minimal angle in radians to start a rotation.\n */\n/**\n * @classdesc\n * Allows the user to rotate the map by twisting with two fingers\n * on a touch screen.\n * @api\n */\nvar PinchRotate = /** @class */ (function (_super) {\n    __extends(PinchRotate, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function PinchRotate(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var pointerOptions = /** @type {import(\"./Pointer.js\").Options} */ (options);\n        if (!pointerOptions.stopDown) {\n            pointerOptions.stopDown = FALSE;\n        }\n        _this = _super.call(this, pointerOptions) || this;\n        /**\n         * @private\n         * @type {import(\"../coordinate.js\").Coordinate}\n         */\n        _this.anchor_ = null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.lastAngle_ = undefined;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.rotating_ = false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.rotationDelta_ = 0.0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.threshold_ = options.threshold !== undefined ? options.threshold : 0.3;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 250;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    PinchRotate.prototype.handleDragEvent = function (mapBrowserEvent) {\n        var rotationDelta = 0.0;\n        var touch0 = this.targetPointers[0];\n        var touch1 = this.targetPointers[1];\n        // angle between touches\n        var angle = Math.atan2(touch1.clientY - touch0.clientY, touch1.clientX - touch0.clientX);\n        if (this.lastAngle_ !== undefined) {\n            var delta = angle - this.lastAngle_;\n            this.rotationDelta_ += delta;\n            if (!this.rotating_ &&\n                Math.abs(this.rotationDelta_) > this.threshold_) {\n                this.rotating_ = true;\n            }\n            rotationDelta = delta;\n        }\n        this.lastAngle_ = angle;\n        var map = mapBrowserEvent.map;\n        var view = map.getView();\n        if (view.getConstraints().rotation === disable) {\n            return;\n        }\n        // rotate anchor point.\n        // FIXME: should be the intersection point between the lines:\n        //     touch0,touch1 and previousTouch0,previousTouch1\n        var viewportPosition = map.getViewport().getBoundingClientRect();\n        var centroid = centroidFromPointers(this.targetPointers);\n        centroid[0] -= viewportPosition.left;\n        centroid[1] -= viewportPosition.top;\n        this.anchor_ = map.getCoordinateFromPixelInternal(centroid);\n        // rotate\n        if (this.rotating_) {\n            map.render();\n            view.adjustRotationInternal(rotationDelta, this.anchor_);\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    PinchRotate.prototype.handleUpEvent = function (mapBrowserEvent) {\n        if (this.targetPointers.length < 2) {\n            var map = mapBrowserEvent.map;\n            var view = map.getView();\n            view.endInteraction(this.duration_);\n            return false;\n        }\n        else {\n            return true;\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    PinchRotate.prototype.handleDownEvent = function (mapBrowserEvent) {\n        if (this.targetPointers.length >= 2) {\n            var map = mapBrowserEvent.map;\n            this.anchor_ = null;\n            this.lastAngle_ = undefined;\n            this.rotating_ = false;\n            this.rotationDelta_ = 0.0;\n            if (!this.handlingDownUpSequence) {\n                map.getView().beginInteraction();\n            }\n            return true;\n        }\n        else {\n            return false;\n        }\n    };\n    return PinchRotate;\n}(PointerInteraction));\nexport default PinchRotate;\n//# sourceMappingURL=PinchRotate.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/interaction/PinchZoom\n */\nimport { FALSE } from '../functions.js';\nimport PointerInteraction, { centroid as centroidFromPointers } from './Pointer.js';\n/**\n * @typedef {Object} Options\n * @property {number} [duration=400] Animation duration in milliseconds.\n */\n/**\n * @classdesc\n * Allows the user to zoom the map by pinching with two fingers\n * on a touch screen.\n * @api\n */\nvar PinchZoom = /** @class */ (function (_super) {\n    __extends(PinchZoom, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function PinchZoom(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var pointerOptions = /** @type {import(\"./Pointer.js\").Options} */ (options);\n        if (!pointerOptions.stopDown) {\n            pointerOptions.stopDown = FALSE;\n        }\n        _this = _super.call(this, pointerOptions) || this;\n        /**\n         * @private\n         * @type {import(\"../coordinate.js\").Coordinate}\n         */\n        _this.anchor_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.duration_ = options.duration !== undefined ? options.duration : 400;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.lastDistance_ = undefined;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.lastScaleDelta_ = 1;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    PinchZoom.prototype.handleDragEvent = function (mapBrowserEvent) {\n        var scaleDelta = 1.0;\n        var touch0 = this.targetPointers[0];\n        var touch1 = this.targetPointers[1];\n        var dx = touch0.clientX - touch1.clientX;\n        var dy = touch0.clientY - touch1.clientY;\n        // distance between touches\n        var distance = Math.sqrt(dx * dx + dy * dy);\n        if (this.lastDistance_ !== undefined) {\n            scaleDelta = this.lastDistance_ / distance;\n        }\n        this.lastDistance_ = distance;\n        var map = mapBrowserEvent.map;\n        var view = map.getView();\n        if (scaleDelta != 1.0) {\n            this.lastScaleDelta_ = scaleDelta;\n        }\n        // scale anchor point.\n        var viewportPosition = map.getViewport().getBoundingClientRect();\n        var centroid = centroidFromPointers(this.targetPointers);\n        centroid[0] -= viewportPosition.left;\n        centroid[1] -= viewportPosition.top;\n        this.anchor_ = map.getCoordinateFromPixelInternal(centroid);\n        // scale, bypass the resolution constraint\n        map.render();\n        view.adjustResolutionInternal(scaleDelta, this.anchor_);\n    };\n    /**\n     * @inheritDoc\n     */\n    PinchZoom.prototype.handleUpEvent = function (mapBrowserEvent) {\n        if (this.targetPointers.length < 2) {\n            var map = mapBrowserEvent.map;\n            var view = map.getView();\n            var direction = this.lastScaleDelta_ > 1 ? 1 : -1;\n            view.endInteraction(this.duration_, direction);\n            return false;\n        }\n        else {\n            return true;\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    PinchZoom.prototype.handleDownEvent = function (mapBrowserEvent) {\n        if (this.targetPointers.length >= 2) {\n            var map = mapBrowserEvent.map;\n            this.anchor_ = null;\n            this.lastDistance_ = undefined;\n            this.lastScaleDelta_ = 1;\n            if (!this.handlingDownUpSequence) {\n                map.getView().beginInteraction();\n            }\n            return true;\n        }\n        else {\n            return false;\n        }\n    };\n    return PinchZoom;\n}(PointerInteraction));\nexport default PinchZoom;\n//# sourceMappingURL=PinchZoom.js.map","/**\n * @module ol/render/Event\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport Event from '../events/Event.js';\nvar RenderEvent = /** @class */ (function (_super) {\n    __extends(RenderEvent, _super);\n    /**\n     * @param {import(\"./EventType.js\").default} type Type.\n     * @param {import(\"../transform.js\").Transform=} opt_inversePixelTransform Transform for\n     *     CSS pixels to rendered pixels.\n     * @param {import(\"../PluggableMap.js\").FrameState=} opt_frameState Frame state.\n     * @param {?CanvasRenderingContext2D=} opt_context Context.\n     */\n    function RenderEvent(type, opt_inversePixelTransform, opt_frameState, opt_context) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * Transform from CSS pixels (relative to the top-left corner of the map viewport)\n         * to rendered pixels on this event's `context`.\n         * @type {import(\"../transform.js\").Transform|undefined}\n         * @api\n         */\n        _this.inversePixelTransform = opt_inversePixelTransform;\n        /**\n         * An object representing the current render frame state.\n         * @type {import(\"../PluggableMap.js\").FrameState|undefined}\n         * @api\n         */\n        _this.frameState = opt_frameState;\n        /**\n         * Canvas context. Not available when the event is dispatched by the map. Only available\n         * when a Canvas renderer is used, null otherwise.\n         * @type {CanvasRenderingContext2D|null|undefined}\n         * @api\n         */\n        _this.context = opt_context;\n        return _this;\n    }\n    return RenderEvent;\n}(Event));\nexport default RenderEvent;\n//# sourceMappingURL=Event.js.map","/**\n * @module ol/colorlike\n */\nimport { toString } from './color.js';\n/**\n * A type accepted by CanvasRenderingContext2D.fillStyle\n * or CanvasRenderingContext2D.strokeStyle.\n * Represents a color, pattern, or gradient. The origin for patterns and\n * gradients as fill style is an increment of 512 css pixels from map coordinate\n * `[0, 0]`. For seamless repeat patterns, width and height of the pattern image\n * must be a factor of two (2, 4, 8, ..., 512).\n *\n * @typedef {string|CanvasPattern|CanvasGradient} ColorLike\n * @api\n */\n/**\n * @param {import(\"./color.js\").Color|ColorLike} color Color.\n * @return {ColorLike} The color as an {@link ol/colorlike~ColorLike}.\n * @api\n */\nexport function asColorLike(color) {\n    if (Array.isArray(color)) {\n        return toString(color);\n    }\n    else {\n        return color;\n    }\n}\n//# sourceMappingURL=colorlike.js.map","/**\n * @module ol/render/VectorContext\n */\n/**\n * @classdesc\n * Context for drawing geometries.  A vector context is available on render\n * events and does not need to be constructed directly.\n * @api\n */\nvar VectorContext = /** @class */ (function () {\n    function VectorContext() {\n    }\n    /**\n     * Render a geometry with a custom renderer.\n     *\n     * @param {import(\"../geom/SimpleGeometry.js\").default} geometry Geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     * @param {Function} renderer Renderer.\n     */\n    VectorContext.prototype.drawCustom = function (geometry, feature, renderer) { };\n    /**\n     * Render a geometry.\n     *\n     * @param {import(\"../geom/Geometry.js\").default} geometry The geometry to render.\n     */\n    VectorContext.prototype.drawGeometry = function (geometry) { };\n    /**\n     * Set the rendering style.\n     *\n     * @param {import(\"../style/Style.js\").default} style The rendering style.\n     */\n    VectorContext.prototype.setStyle = function (style) { };\n    /**\n     * @param {import(\"../geom/Circle.js\").default} circleGeometry Circle geometry.\n     * @param {import(\"../Feature.js\").default} feature Feature.\n     */\n    VectorContext.prototype.drawCircle = function (circleGeometry, feature) { };\n    /**\n     * @param {import(\"../Feature.js\").default} feature Feature.\n     * @param {import(\"../style/Style.js\").default} style Style.\n     */\n    VectorContext.prototype.drawFeature = function (feature, style) { };\n    /**\n     * @param {import(\"../geom/GeometryCollection.js\").default} geometryCollectionGeometry Geometry collection.\n     * @param {import(\"../Feature.js\").default} feature Feature.\n     */\n    VectorContext.prototype.drawGeometryCollection = function (geometryCollectionGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/LineString.js\").default|import(\"./Feature.js\").default} lineStringGeometry Line string geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawLineString = function (lineStringGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/MultiLineString.js\").default|import(\"./Feature.js\").default} multiLineStringGeometry MultiLineString geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawMultiLineString = function (multiLineStringGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/MultiPoint.js\").default|import(\"./Feature.js\").default} multiPointGeometry MultiPoint geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawMultiPoint = function (multiPointGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/MultiPolygon.js\").default} multiPolygonGeometry MultiPolygon geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawMultiPolygon = function (multiPolygonGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/Point.js\").default|import(\"./Feature.js\").default} pointGeometry Point geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawPoint = function (pointGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/Polygon.js\").default|import(\"./Feature.js\").default} polygonGeometry Polygon geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawPolygon = function (polygonGeometry, feature) { };\n    /**\n     * @param {import(\"../geom/Geometry.js\").default|import(\"./Feature.js\").default} geometry Geometry.\n     * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n     */\n    VectorContext.prototype.drawText = function (geometry, feature) { };\n    /**\n     * @param {import(\"../style/Fill.js\").default} fillStyle Fill style.\n     * @param {import(\"../style/Stroke.js\").default} strokeStyle Stroke style.\n     */\n    VectorContext.prototype.setFillStrokeStyle = function (fillStyle, strokeStyle) { };\n    /**\n     * @param {import(\"../style/Image.js\").default} imageStyle Image style.\n     * @param {import(\"./canvas.js\").DeclutterGroup=} opt_declutterGroup Declutter.\n     */\n    VectorContext.prototype.setImageStyle = function (imageStyle, opt_declutterGroup) { };\n    /**\n     * @param {import(\"../style/Text.js\").default} textStyle Text style.\n     * @param {import(\"./canvas.js\").DeclutterGroups=} opt_declutterGroups Declutter.\n     */\n    VectorContext.prototype.setTextStyle = function (textStyle, opt_declutterGroups) { };\n    return VectorContext;\n}());\nexport default VectorContext;\n//# sourceMappingURL=VectorContext.js.map","/**\n * @module ol/render/canvas\n */\nimport { getFontParameters } from '../css.js';\nimport { createCanvasContext2D } from '../dom.js';\nimport { clear } from '../obj.js';\nimport BaseObject from '../Object.js';\nimport EventTarget from '../events/Target.js';\nimport { WORKER_OFFSCREEN_CANVAS } from '../has.js';\nimport { toString } from '../transform.js';\n/**\n * @typedef {Object} FillState\n * @property {import(\"../colorlike.js\").ColorLike} fillStyle\n */\n/**\n * @typedef Label\n * @property {number} width\n * @property {number} height\n * @property {Array<string|number>} contextInstructions\n */\n/**\n * @typedef {Object} FillStrokeState\n * @property {import(\"../colorlike.js\").ColorLike} [currentFillStyle]\n * @property {import(\"../colorlike.js\").ColorLike} [currentStrokeStyle]\n * @property {CanvasLineCap} [currentLineCap]\n * @property {Array<number>} currentLineDash\n * @property {number} [currentLineDashOffset]\n * @property {CanvasLineJoin} [currentLineJoin]\n * @property {number} [currentLineWidth]\n * @property {number} [currentMiterLimit]\n * @property {number} [lastStroke]\n * @property {import(\"../colorlike.js\").ColorLike} [fillStyle]\n * @property {import(\"../colorlike.js\").ColorLike} [strokeStyle]\n * @property {CanvasLineCap} [lineCap]\n * @property {Array<number>} lineDash\n * @property {number} [lineDashOffset]\n * @property {CanvasLineJoin} [lineJoin]\n * @property {number} [lineWidth]\n * @property {number} [miterLimit]\n */\n/**\n * @typedef {Object} StrokeState\n * @property {CanvasLineCap} lineCap\n * @property {Array<number>} lineDash\n * @property {number} lineDashOffset\n * @property {CanvasLineJoin} lineJoin\n * @property {number} lineWidth\n * @property {number} miterLimit\n * @property {import(\"../colorlike.js\").ColorLike} strokeStyle\n */\n/**\n * @typedef {Object} TextState\n * @property {string} font\n * @property {string} [textAlign]\n * @property {string} textBaseline\n * @property {string} [placement]\n * @property {number} [maxAngle]\n * @property {boolean} [overflow]\n * @property {import(\"../style/Fill.js\").default} [backgroundFill]\n * @property {import(\"../style/Stroke.js\").default} [backgroundStroke]\n * @property {number} [scale]\n * @property {Array<number>} [padding]\n */\n/**\n * Container for decluttered replay instructions that need to be rendered or\n * omitted together, i.e. when styles render both an image and text, or for the\n * characters that form text along lines. The basic elements of this array are\n * `[minX, minY, maxX, maxY, count]`, where the first four entries are the\n * rendered extent of the group in pixel space. `count` is the number of styles\n * in the group, i.e. 2 when an image and a text are grouped, or 1 otherwise.\n * In addition to these four elements, declutter instruction arrays (i.e. the\n * arguments to {@link module:ol/render/canvas~drawImage} are appended to the array.\n * @typedef {Array<*>} DeclutterGroup\n */\n/**\n * Declutter groups for support of multi geometries.\n * @typedef {Array<DeclutterGroup>} DeclutterGroups\n */\n/**\n * @const\n * @type {string}\n */\nexport var defaultFont = '10px sans-serif';\n/**\n * @const\n * @type {import(\"../colorlike.js\").ColorLike}\n */\nexport var defaultFillStyle = '#000';\n/**\n * @const\n * @type {CanvasLineCap}\n */\nexport var defaultLineCap = 'round';\n/**\n * @const\n * @type {Array<number>}\n */\nexport var defaultLineDash = [];\n/**\n * @const\n * @type {number}\n */\nexport var defaultLineDashOffset = 0;\n/**\n * @const\n * @type {CanvasLineJoin}\n */\nexport var defaultLineJoin = 'round';\n/**\n * @const\n * @type {number}\n */\nexport var defaultMiterLimit = 10;\n/**\n * @const\n * @type {import(\"../colorlike.js\").ColorLike}\n */\nexport var defaultStrokeStyle = '#000';\n/**\n * @const\n * @type {string}\n */\nexport var defaultTextAlign = 'center';\n/**\n * @const\n * @type {string}\n */\nexport var defaultTextBaseline = 'middle';\n/**\n * @const\n * @type {Array<number>}\n */\nexport var defaultPadding = [0, 0, 0, 0];\n/**\n * @const\n * @type {number}\n */\nexport var defaultLineWidth = 1;\n/**\n * @type {BaseObject}\n */\nexport var checkedFonts = new BaseObject();\n/**\n * The label cache for text rendering. To change the default cache size of 2048\n * entries, use {@link module:ol/structs/LRUCache#setSize}.\n * Deprecated - there is no label cache any more.\n * @type {?}\n * @api\n * @deprecated\n */\nexport var labelCache = new EventTarget();\nlabelCache.setSize = function () {\n    console.warn('labelCache is deprecated.'); //eslint-disable-line\n};\n/**\n * @type {CanvasRenderingContext2D}\n */\nvar measureContext = null;\n/**\n * @type {string}\n */\nvar measureFont;\n/**\n * @type {!Object<string, number>}\n */\nexport var textHeights = {};\n/**\n * Clears the label cache when a font becomes available.\n * @param {string} fontSpec CSS font spec.\n */\nexport var registerFont = (function () {\n    var retries = 100;\n    var size = '32px ';\n    var referenceFonts = ['monospace', 'serif'];\n    var len = referenceFonts.length;\n    var text = 'wmytzilWMYTZIL@#/&?$%10\\uF013';\n    var interval, referenceWidth;\n    /**\n     * @param {string} fontStyle Css font-style\n     * @param {string} fontWeight Css font-weight\n     * @param {*} fontFamily Css font-family\n     * @return {boolean} Font with style and weight is available\n     */\n    function isAvailable(fontStyle, fontWeight, fontFamily) {\n        var available = true;\n        for (var i = 0; i < len; ++i) {\n            var referenceFont = referenceFonts[i];\n            referenceWidth = measureTextWidth(fontStyle + ' ' + fontWeight + ' ' + size + referenceFont, text);\n            if (fontFamily != referenceFont) {\n                var width = measureTextWidth(fontStyle + ' ' + fontWeight + ' ' + size + fontFamily + ',' + referenceFont, text);\n                // If width and referenceWidth are the same, then the fallback was used\n                // instead of the font we wanted, so the font is not available.\n                available = available && width != referenceWidth;\n            }\n        }\n        if (available) {\n            return true;\n        }\n        return false;\n    }\n    function check() {\n        var done = true;\n        var fonts = checkedFonts.getKeys();\n        for (var i = 0, ii = fonts.length; i < ii; ++i) {\n            var font = fonts[i];\n            if (checkedFonts.get(font) < retries) {\n                if (isAvailable.apply(this, font.split('\\n'))) {\n                    clear(textHeights);\n                    // Make sure that loaded fonts are picked up by Safari\n                    measureContext = null;\n                    measureFont = undefined;\n                    checkedFonts.set(font, retries);\n                }\n                else {\n                    checkedFonts.set(font, checkedFonts.get(font) + 1, true);\n                    done = false;\n                }\n            }\n        }\n        if (done) {\n            clearInterval(interval);\n            interval = undefined;\n        }\n    }\n    return function (fontSpec) {\n        var font = getFontParameters(fontSpec);\n        if (!font) {\n            return;\n        }\n        var families = font.families;\n        for (var i = 0, ii = families.length; i < ii; ++i) {\n            var family = families[i];\n            var key = font.style + '\\n' + font.weight + '\\n' + family;\n            if (checkedFonts.get(key) === undefined) {\n                checkedFonts.set(key, retries, true);\n                if (!isAvailable(font.style, font.weight, family)) {\n                    checkedFonts.set(key, 0, true);\n                    if (interval === undefined) {\n                        interval = setInterval(check, 32);\n                    }\n                }\n            }\n        }\n    };\n})();\n/**\n * @param {string} font Font to use for measuring.\n * @return {import(\"../size.js\").Size} Measurement.\n */\nexport var measureTextHeight = (function () {\n    /**\n     * @type {HTMLDivElement}\n     */\n    var div;\n    var heights = textHeights;\n    return function (fontSpec) {\n        var height = heights[fontSpec];\n        if (height == undefined) {\n            if (WORKER_OFFSCREEN_CANVAS) {\n                var font = getFontParameters(fontSpec);\n                var metrics = measureText(fontSpec, 'Žg');\n                var lineHeight = isNaN(Number(font.lineHeight)) ? 1.2 : Number(font.lineHeight);\n                textHeights[fontSpec] = lineHeight * (metrics.actualBoundingBoxAscent + metrics.actualBoundingBoxDescent);\n            }\n            else {\n                if (!div) {\n                    div = document.createElement('div');\n                    div.innerHTML = 'M';\n                    div.style.margin = '0 !important';\n                    div.style.padding = '0 !important';\n                    div.style.position = 'absolute !important';\n                    div.style.left = '-99999px !important';\n                }\n                div.style.font = fontSpec;\n                document.body.appendChild(div);\n                height = div.offsetHeight;\n                heights[fontSpec] = height;\n                document.body.removeChild(div);\n            }\n        }\n        return height;\n    };\n})();\n/**\n * @param {string} font Font.\n * @param {string} text Text.\n * @return {TextMetrics} Text metrics.\n */\nfunction measureText(font, text) {\n    if (!measureContext) {\n        measureContext = createCanvasContext2D(1, 1);\n    }\n    if (font != measureFont) {\n        measureContext.font = font;\n        measureFont = measureContext.font;\n    }\n    return measureContext.measureText(text);\n}\n/**\n * @param {string} font Font.\n * @param {string} text Text.\n * @return {number} Width.\n */\nexport function measureTextWidth(font, text) {\n    return measureText(font, text).width;\n}\n/**\n * Measure text width using a cache.\n * @param {string} font The font.\n * @param {string} text The text to measure.\n * @param {Object<string, number>} cache A lookup of cached widths by text.\n * @returns {number} The text width.\n */\nexport function measureAndCacheTextWidth(font, text, cache) {\n    if (text in cache) {\n        return cache[text];\n    }\n    var width = measureTextWidth(font, text);\n    cache[text] = width;\n    return width;\n}\n/**\n * @param {string} font Font to use for measuring.\n * @param {Array<string>} lines Lines to measure.\n * @param {Array<number>} widths Array will be populated with the widths of\n * each line.\n * @return {number} Width of the whole text.\n */\nexport function measureTextWidths(font, lines, widths) {\n    var numLines = lines.length;\n    var width = 0;\n    for (var i = 0; i < numLines; ++i) {\n        var currentWidth = measureTextWidth(font, lines[i]);\n        width = Math.max(width, currentWidth);\n        widths.push(currentWidth);\n    }\n    return width;\n}\n/**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {number} rotation Rotation.\n * @param {number} offsetX X offset.\n * @param {number} offsetY Y offset.\n */\nexport function rotateAtOffset(context, rotation, offsetX, offsetY) {\n    if (rotation !== 0) {\n        context.translate(offsetX, offsetY);\n        context.rotate(rotation);\n        context.translate(-offsetX, -offsetY);\n    }\n}\n/**\n * @param {CanvasRenderingContext2D} context Context.\n * @param {import(\"../transform.js\").Transform|null} transform Transform.\n * @param {number} opacity Opacity.\n * @param {Label|HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} labelOrImage Label.\n * @param {number} originX Origin X.\n * @param {number} originY Origin Y.\n * @param {number} w Width.\n * @param {number} h Height.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {number} scale Scale.\n */\nexport function drawImageOrLabel(context, transform, opacity, labelOrImage, originX, originY, w, h, x, y, scale) {\n    context.save();\n    if (opacity !== 1) {\n        context.globalAlpha *= opacity;\n    }\n    if (transform) {\n        context.setTransform.apply(context, transform);\n    }\n    if (( /** @type {*} */(labelOrImage).contextInstructions)) {\n        // label\n        context.translate(x, y);\n        context.scale(scale, scale);\n        executeLabelInstructions(/** @type {Label} */ (labelOrImage), context);\n    }\n    else {\n        // image\n        context.drawImage(/** @type {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} */ (labelOrImage), originX, originY, w, h, x, y, w * scale, h * scale);\n    }\n    context.restore();\n}\n/**\n * @param {Label} label Label.\n * @param {CanvasRenderingContext2D} context Context.\n */\nfunction executeLabelInstructions(label, context) {\n    var contextInstructions = label.contextInstructions;\n    for (var i = 0, ii = contextInstructions.length; i < ii; i += 2) {\n        if (Array.isArray(contextInstructions[i + 1])) {\n            context[contextInstructions[i]].apply(context, contextInstructions[i + 1]);\n        }\n        else {\n            context[contextInstructions[i]] = contextInstructions[i + 1];\n        }\n    }\n}\n/**\n * @type {HTMLCanvasElement}\n * @private\n */\nvar createTransformStringCanvas = null;\n/**\n * @param {import(\"../transform.js\").Transform} transform Transform.\n * @return {string} CSS transform.\n */\nexport function createTransformString(transform) {\n    if (WORKER_OFFSCREEN_CANVAS) {\n        return toString(transform);\n    }\n    else {\n        if (!createTransformStringCanvas) {\n            createTransformStringCanvas = createCanvasContext2D(1, 1).canvas;\n        }\n        createTransformStringCanvas.style.transform = toString(transform);\n        return createTransformStringCanvas.style.transform;\n    }\n}\n//# sourceMappingURL=canvas.js.map","/**\n * @module ol/render/canvas/Immediate\n */\n// FIXME test, especially polygons with holes and multipolygons\n// FIXME need to handle large thick features (where pixel size matters)\n// FIXME add offset and end to ol/geom/flat/transform~transform2D?\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport { equals } from '../../array.js';\nimport { asColorLike } from '../../colorlike.js';\nimport { intersects } from '../../extent.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport { transformGeom2D } from '../../geom/SimpleGeometry.js';\nimport { transform2D } from '../../geom/flat/transform.js';\nimport VectorContext from '../VectorContext.js';\nimport { defaultTextAlign, defaultFillStyle, defaultLineCap, defaultLineDash, defaultLineDashOffset, defaultLineJoin, defaultLineWidth, defaultMiterLimit, defaultStrokeStyle, defaultTextBaseline, defaultFont } from '../canvas.js';\nimport { create as createTransform, compose as composeTransform } from '../../transform.js';\n/**\n * @classdesc\n * A concrete subclass of {@link module:ol/render/VectorContext} that implements\n * direct rendering of features and geometries to an HTML5 Canvas context.\n * Instances of this class are created internally by the library and\n * provided to application code as vectorContext member of the\n * {@link module:ol/render/Event~RenderEvent} object associated with postcompose, precompose and\n * render events emitted by layers and maps.\n */\nvar CanvasImmediateRenderer = /** @class */ (function (_super) {\n    __extends(CanvasImmediateRenderer, _super);\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"../../extent.js\").Extent} extent Extent.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @param {number} viewRotation View rotation.\n     * @param {number=} opt_squaredTolerance Optional squared tolerance for simplification.\n     * @param {import(\"../../proj.js\").TransformFunction=} opt_userTransform Transform from user to view projection.\n     */\n    function CanvasImmediateRenderer(context, pixelRatio, extent, transform, viewRotation, opt_squaredTolerance, opt_userTransform) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {CanvasRenderingContext2D}\n         */\n        _this.context_ = context;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.pixelRatio_ = pixelRatio;\n        /**\n         * @private\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        _this.extent_ = extent;\n        /**\n         * @private\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        _this.transform_ = transform;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.viewRotation_ = viewRotation;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.squaredTolerance_ = opt_squaredTolerance;\n        /**\n         * @private\n         * @type {import(\"../../proj.js\").TransformFunction}\n         */\n        _this.userTransform_ = opt_userTransform;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").FillState}\n         */\n        _this.contextFillState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").StrokeState}\n         */\n        _this.contextStrokeState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").TextState}\n         */\n        _this.contextTextState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").FillState}\n         */\n        _this.fillState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").StrokeState}\n         */\n        _this.strokeState_ = null;\n        /**\n         * @private\n         * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n         */\n        _this.image_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageAnchorX_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageAnchorY_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageHeight_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageOpacity_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageOriginX_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageOriginY_ = 0;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.imageRotateWithView_ = false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageRotation_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageScale_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.imageWidth_ = 0;\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.text_ = '';\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textOffsetX_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textOffsetY_ = 0;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.textRotateWithView_ = false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textRotation_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textScale_ = 0;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").FillState}\n         */\n        _this.textFillState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").StrokeState}\n         */\n        _this.textStrokeState_ = null;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").TextState}\n         */\n        _this.textState_ = null;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.pixelCoordinates_ = [];\n        /**\n         * @private\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        _this.tmpLocalTransform_ = createTransform();\n        return _this;\n    }\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @private\n     */\n    CanvasImmediateRenderer.prototype.drawImages_ = function (flatCoordinates, offset, end, stride) {\n        if (!this.image_) {\n            return;\n        }\n        var pixelCoordinates = transform2D(flatCoordinates, offset, end, 2, this.transform_, this.pixelCoordinates_);\n        var context = this.context_;\n        var localTransform = this.tmpLocalTransform_;\n        var alpha = context.globalAlpha;\n        if (this.imageOpacity_ != 1) {\n            context.globalAlpha = alpha * this.imageOpacity_;\n        }\n        var rotation = this.imageRotation_;\n        if (this.imageRotateWithView_) {\n            rotation += this.viewRotation_;\n        }\n        for (var i = 0, ii = pixelCoordinates.length; i < ii; i += 2) {\n            var x = pixelCoordinates[i] - this.imageAnchorX_;\n            var y = pixelCoordinates[i + 1] - this.imageAnchorY_;\n            if (rotation !== 0 || this.imageScale_ != 1) {\n                var centerX = x + this.imageAnchorX_;\n                var centerY = y + this.imageAnchorY_;\n                composeTransform(localTransform, centerX, centerY, this.imageScale_, this.imageScale_, rotation, -centerX, -centerY);\n                context.setTransform.apply(context, localTransform);\n            }\n            context.drawImage(this.image_, this.imageOriginX_, this.imageOriginY_, this.imageWidth_, this.imageHeight_, x, y, this.imageWidth_, this.imageHeight_);\n        }\n        if (rotation !== 0 || this.imageScale_ != 1) {\n            context.setTransform(1, 0, 0, 1, 0, 0);\n        }\n        if (this.imageOpacity_ != 1) {\n            context.globalAlpha = alpha;\n        }\n    };\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @private\n     */\n    CanvasImmediateRenderer.prototype.drawText_ = function (flatCoordinates, offset, end, stride) {\n        if (!this.textState_ || this.text_ === '') {\n            return;\n        }\n        if (this.textFillState_) {\n            this.setContextFillState_(this.textFillState_);\n        }\n        if (this.textStrokeState_) {\n            this.setContextStrokeState_(this.textStrokeState_);\n        }\n        this.setContextTextState_(this.textState_);\n        var pixelCoordinates = transform2D(flatCoordinates, offset, end, stride, this.transform_, this.pixelCoordinates_);\n        var context = this.context_;\n        var rotation = this.textRotation_;\n        if (this.textRotateWithView_) {\n            rotation += this.viewRotation_;\n        }\n        for (; offset < end; offset += stride) {\n            var x = pixelCoordinates[offset] + this.textOffsetX_;\n            var y = pixelCoordinates[offset + 1] + this.textOffsetY_;\n            if (rotation !== 0 || this.textScale_ != 1) {\n                var localTransform = composeTransform(this.tmpLocalTransform_, x, y, this.textScale_, this.textScale_, rotation, -x, -y);\n                context.setTransform.apply(context, localTransform);\n            }\n            if (this.textStrokeState_) {\n                context.strokeText(this.text_, x, y);\n            }\n            if (this.textFillState_) {\n                context.fillText(this.text_, x, y);\n            }\n        }\n        if (rotation !== 0 || this.textScale_ != 1) {\n            context.setTransform(1, 0, 0, 1, 0, 0);\n        }\n    };\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @param {boolean} close Close.\n     * @private\n     * @return {number} end End.\n     */\n    CanvasImmediateRenderer.prototype.moveToLineTo_ = function (flatCoordinates, offset, end, stride, close) {\n        var context = this.context_;\n        var pixelCoordinates = transform2D(flatCoordinates, offset, end, stride, this.transform_, this.pixelCoordinates_);\n        context.moveTo(pixelCoordinates[0], pixelCoordinates[1]);\n        var length = pixelCoordinates.length;\n        if (close) {\n            length -= 2;\n        }\n        for (var i = 2; i < length; i += 2) {\n            context.lineTo(pixelCoordinates[i], pixelCoordinates[i + 1]);\n        }\n        if (close) {\n            context.closePath();\n        }\n        return end;\n    };\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {Array<number>} ends Ends.\n     * @param {number} stride Stride.\n     * @private\n     * @return {number} End.\n     */\n    CanvasImmediateRenderer.prototype.drawRings_ = function (flatCoordinates, offset, ends, stride) {\n        for (var i = 0, ii = ends.length; i < ii; ++i) {\n            offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, true);\n        }\n        return offset;\n    };\n    /**\n     * Render a circle geometry into the canvas.  Rendering is immediate and uses\n     * the current fill and stroke styles.\n     *\n     * @param {import(\"../../geom/Circle.js\").default} geometry Circle geometry.\n     * @override\n     * @api\n     */\n    CanvasImmediateRenderer.prototype.drawCircle = function (geometry) {\n        if (!intersects(this.extent_, geometry.getExtent())) {\n            return;\n        }\n        if (this.fillState_ || this.strokeState_) {\n            if (this.fillState_) {\n                this.setContextFillState_(this.fillState_);\n            }\n            if (this.strokeState_) {\n                this.setContextStrokeState_(this.strokeState_);\n            }\n            var pixelCoordinates = transformGeom2D(geometry, this.transform_, this.pixelCoordinates_);\n            var dx = pixelCoordinates[2] - pixelCoordinates[0];\n            var dy = pixelCoordinates[3] - pixelCoordinates[1];\n            var radius = Math.sqrt(dx * dx + dy * dy);\n            var context = this.context_;\n            context.beginPath();\n            context.arc(pixelCoordinates[0], pixelCoordinates[1], radius, 0, 2 * Math.PI);\n            if (this.fillState_) {\n                context.fill();\n            }\n            if (this.strokeState_) {\n                context.stroke();\n            }\n        }\n        if (this.text_ !== '') {\n            this.drawText_(geometry.getCenter(), 0, 2, 2);\n        }\n    };\n    /**\n     * Set the rendering style.  Note that since this is an immediate rendering API,\n     * any `zIndex` on the provided style will be ignored.\n     *\n     * @param {import(\"../../style/Style.js\").default} style The rendering style.\n     * @override\n     * @api\n     */\n    CanvasImmediateRenderer.prototype.setStyle = function (style) {\n        this.setFillStrokeStyle(style.getFill(), style.getStroke());\n        this.setImageStyle(style.getImage());\n        this.setTextStyle(style.getText());\n    };\n    /**\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     */\n    CanvasImmediateRenderer.prototype.setTransform = function (transform) {\n        this.transform_ = transform;\n    };\n    /**\n     * Render a geometry into the canvas.  Call\n     * {@link module:ol/render/canvas/Immediate#setStyle} first to set the rendering style.\n     *\n     * @param {import(\"../../geom/Geometry.js\").default|import(\"../Feature.js\").default} geometry The geometry to render.\n     * @override\n     * @api\n     */\n    CanvasImmediateRenderer.prototype.drawGeometry = function (geometry) {\n        var type = geometry.getType();\n        switch (type) {\n            case GeometryType.POINT:\n                this.drawPoint(/** @type {import(\"../../geom/Point.js\").default} */ (geometry));\n                break;\n            case GeometryType.LINE_STRING:\n                this.drawLineString(/** @type {import(\"../../geom/LineString.js\").default} */ (geometry));\n                break;\n            case GeometryType.POLYGON:\n                this.drawPolygon(/** @type {import(\"../../geom/Polygon.js\").default} */ (geometry));\n                break;\n            case GeometryType.MULTI_POINT:\n                this.drawMultiPoint(/** @type {import(\"../../geom/MultiPoint.js\").default} */ (geometry));\n                break;\n            case GeometryType.MULTI_LINE_STRING:\n                this.drawMultiLineString(/** @type {import(\"../../geom/MultiLineString.js\").default} */ (geometry));\n                break;\n            case GeometryType.MULTI_POLYGON:\n                this.drawMultiPolygon(/** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry));\n                break;\n            case GeometryType.GEOMETRY_COLLECTION:\n                this.drawGeometryCollection(/** @type {import(\"../../geom/GeometryCollection.js\").default} */ (geometry));\n                break;\n            case GeometryType.CIRCLE:\n                this.drawCircle(/** @type {import(\"../../geom/Circle.js\").default} */ (geometry));\n                break;\n            default:\n        }\n    };\n    /**\n     * Render a feature into the canvas.  Note that any `zIndex` on the provided\n     * style will be ignored - features are rendered immediately in the order that\n     * this method is called.  If you need `zIndex` support, you should be using an\n     * {@link module:ol/layer/Vector~VectorLayer} instead.\n     *\n     * @param {import(\"../../Feature.js\").default} feature Feature.\n     * @param {import(\"../../style/Style.js\").default} style Style.\n     * @override\n     * @api\n     */\n    CanvasImmediateRenderer.prototype.drawFeature = function (feature, style) {\n        var geometry = style.getGeometryFunction()(feature);\n        if (!geometry || !intersects(this.extent_, geometry.getExtent())) {\n            return;\n        }\n        this.setStyle(style);\n        this.drawGeometry(geometry);\n    };\n    /**\n     * Render a GeometryCollection to the canvas.  Rendering is immediate and\n     * uses the current styles appropriate for each geometry in the collection.\n     *\n     * @param {import(\"../../geom/GeometryCollection.js\").default} geometry Geometry collection.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawGeometryCollection = function (geometry) {\n        var geometries = geometry.getGeometriesArray();\n        for (var i = 0, ii = geometries.length; i < ii; ++i) {\n            this.drawGeometry(geometries[i]);\n        }\n    };\n    /**\n     * Render a Point geometry into the canvas.  Rendering is immediate and uses\n     * the current style.\n     *\n     * @param {import(\"../../geom/Point.js\").default|import(\"../Feature.js\").default} geometry Point geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawPoint = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/Point.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        var flatCoordinates = geometry.getFlatCoordinates();\n        var stride = geometry.getStride();\n        if (this.image_) {\n            this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);\n        }\n        if (this.text_ !== '') {\n            this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);\n        }\n    };\n    /**\n     * Render a MultiPoint geometry  into the canvas.  Rendering is immediate and\n     * uses the current style.\n     *\n     * @param {import(\"../../geom/MultiPoint.js\").default|import(\"../Feature.js\").default} geometry MultiPoint geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawMultiPoint = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/MultiPoint.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        var flatCoordinates = geometry.getFlatCoordinates();\n        var stride = geometry.getStride();\n        if (this.image_) {\n            this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);\n        }\n        if (this.text_ !== '') {\n            this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);\n        }\n    };\n    /**\n     * Render a LineString into the canvas.  Rendering is immediate and uses\n     * the current style.\n     *\n     * @param {import(\"../../geom/LineString.js\").default|import(\"../Feature.js\").default} geometry LineString geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawLineString = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/LineString.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        if (!intersects(this.extent_, geometry.getExtent())) {\n            return;\n        }\n        if (this.strokeState_) {\n            this.setContextStrokeState_(this.strokeState_);\n            var context = this.context_;\n            var flatCoordinates = geometry.getFlatCoordinates();\n            context.beginPath();\n            this.moveToLineTo_(flatCoordinates, 0, flatCoordinates.length, geometry.getStride(), false);\n            context.stroke();\n        }\n        if (this.text_ !== '') {\n            var flatMidpoint = geometry.getFlatMidpoint();\n            this.drawText_(flatMidpoint, 0, 2, 2);\n        }\n    };\n    /**\n     * Render a MultiLineString geometry into the canvas.  Rendering is immediate\n     * and uses the current style.\n     *\n     * @param {import(\"../../geom/MultiLineString.js\").default|import(\"../Feature.js\").default} geometry MultiLineString geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawMultiLineString = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/MultiLineString.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        var geometryExtent = geometry.getExtent();\n        if (!intersects(this.extent_, geometryExtent)) {\n            return;\n        }\n        if (this.strokeState_) {\n            this.setContextStrokeState_(this.strokeState_);\n            var context = this.context_;\n            var flatCoordinates = geometry.getFlatCoordinates();\n            var offset = 0;\n            var ends = /** @type {Array<number>} */ (geometry.getEnds());\n            var stride = geometry.getStride();\n            context.beginPath();\n            for (var i = 0, ii = ends.length; i < ii; ++i) {\n                offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, false);\n            }\n            context.stroke();\n        }\n        if (this.text_ !== '') {\n            var flatMidpoints = geometry.getFlatMidpoints();\n            this.drawText_(flatMidpoints, 0, flatMidpoints.length, 2);\n        }\n    };\n    /**\n     * Render a Polygon geometry into the canvas.  Rendering is immediate and uses\n     * the current style.\n     *\n     * @param {import(\"../../geom/Polygon.js\").default|import(\"../Feature.js\").default} geometry Polygon geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawPolygon = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/Polygon.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        if (!intersects(this.extent_, geometry.getExtent())) {\n            return;\n        }\n        if (this.strokeState_ || this.fillState_) {\n            if (this.fillState_) {\n                this.setContextFillState_(this.fillState_);\n            }\n            if (this.strokeState_) {\n                this.setContextStrokeState_(this.strokeState_);\n            }\n            var context = this.context_;\n            context.beginPath();\n            this.drawRings_(geometry.getOrientedFlatCoordinates(), 0, /** @type {Array<number>} */ (geometry.getEnds()), geometry.getStride());\n            if (this.fillState_) {\n                context.fill();\n            }\n            if (this.strokeState_) {\n                context.stroke();\n            }\n        }\n        if (this.text_ !== '') {\n            var flatInteriorPoint = geometry.getFlatInteriorPoint();\n            this.drawText_(flatInteriorPoint, 0, 2, 2);\n        }\n    };\n    /**\n     * Render MultiPolygon geometry into the canvas.  Rendering is immediate and\n     * uses the current style.\n     * @param {import(\"../../geom/MultiPolygon.js\").default} geometry MultiPolygon geometry.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.drawMultiPolygon = function (geometry) {\n        if (this.squaredTolerance_) {\n            geometry = /** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));\n        }\n        if (!intersects(this.extent_, geometry.getExtent())) {\n            return;\n        }\n        if (this.strokeState_ || this.fillState_) {\n            if (this.fillState_) {\n                this.setContextFillState_(this.fillState_);\n            }\n            if (this.strokeState_) {\n                this.setContextStrokeState_(this.strokeState_);\n            }\n            var context = this.context_;\n            var flatCoordinates = geometry.getOrientedFlatCoordinates();\n            var offset = 0;\n            var endss = geometry.getEndss();\n            var stride = geometry.getStride();\n            context.beginPath();\n            for (var i = 0, ii = endss.length; i < ii; ++i) {\n                var ends = endss[i];\n                offset = this.drawRings_(flatCoordinates, offset, ends, stride);\n            }\n            if (this.fillState_) {\n                context.fill();\n            }\n            if (this.strokeState_) {\n                context.stroke();\n            }\n        }\n        if (this.text_ !== '') {\n            var flatInteriorPoints = geometry.getFlatInteriorPoints();\n            this.drawText_(flatInteriorPoints, 0, flatInteriorPoints.length, 2);\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillState} fillState Fill state.\n     * @private\n     */\n    CanvasImmediateRenderer.prototype.setContextFillState_ = function (fillState) {\n        var context = this.context_;\n        var contextFillState = this.contextFillState_;\n        if (!contextFillState) {\n            context.fillStyle = fillState.fillStyle;\n            this.contextFillState_ = {\n                fillStyle: fillState.fillStyle\n            };\n        }\n        else {\n            if (contextFillState.fillStyle != fillState.fillStyle) {\n                contextFillState.fillStyle = fillState.fillStyle;\n                context.fillStyle = fillState.fillStyle;\n            }\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").StrokeState} strokeState Stroke state.\n     * @private\n     */\n    CanvasImmediateRenderer.prototype.setContextStrokeState_ = function (strokeState) {\n        var context = this.context_;\n        var contextStrokeState = this.contextStrokeState_;\n        if (!contextStrokeState) {\n            context.lineCap = strokeState.lineCap;\n            if (context.setLineDash) {\n                context.setLineDash(strokeState.lineDash);\n                context.lineDashOffset = strokeState.lineDashOffset;\n            }\n            context.lineJoin = strokeState.lineJoin;\n            context.lineWidth = strokeState.lineWidth;\n            context.miterLimit = strokeState.miterLimit;\n            context.strokeStyle = strokeState.strokeStyle;\n            this.contextStrokeState_ = {\n                lineCap: strokeState.lineCap,\n                lineDash: strokeState.lineDash,\n                lineDashOffset: strokeState.lineDashOffset,\n                lineJoin: strokeState.lineJoin,\n                lineWidth: strokeState.lineWidth,\n                miterLimit: strokeState.miterLimit,\n                strokeStyle: strokeState.strokeStyle\n            };\n        }\n        else {\n            if (contextStrokeState.lineCap != strokeState.lineCap) {\n                contextStrokeState.lineCap = strokeState.lineCap;\n                context.lineCap = strokeState.lineCap;\n            }\n            if (context.setLineDash) {\n                if (!equals(contextStrokeState.lineDash, strokeState.lineDash)) {\n                    context.setLineDash(contextStrokeState.lineDash = strokeState.lineDash);\n                }\n                if (contextStrokeState.lineDashOffset != strokeState.lineDashOffset) {\n                    contextStrokeState.lineDashOffset = strokeState.lineDashOffset;\n                    context.lineDashOffset = strokeState.lineDashOffset;\n                }\n            }\n            if (contextStrokeState.lineJoin != strokeState.lineJoin) {\n                contextStrokeState.lineJoin = strokeState.lineJoin;\n                context.lineJoin = strokeState.lineJoin;\n            }\n            if (contextStrokeState.lineWidth != strokeState.lineWidth) {\n                contextStrokeState.lineWidth = strokeState.lineWidth;\n                context.lineWidth = strokeState.lineWidth;\n            }\n            if (contextStrokeState.miterLimit != strokeState.miterLimit) {\n                contextStrokeState.miterLimit = strokeState.miterLimit;\n                context.miterLimit = strokeState.miterLimit;\n            }\n            if (contextStrokeState.strokeStyle != strokeState.strokeStyle) {\n                contextStrokeState.strokeStyle = strokeState.strokeStyle;\n                context.strokeStyle = strokeState.strokeStyle;\n            }\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").TextState} textState Text state.\n     * @private\n     */\n    CanvasImmediateRenderer.prototype.setContextTextState_ = function (textState) {\n        var context = this.context_;\n        var contextTextState = this.contextTextState_;\n        var textAlign = textState.textAlign ?\n            textState.textAlign : defaultTextAlign;\n        if (!contextTextState) {\n            context.font = textState.font;\n            context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);\n            context.textBaseline = /** @type {CanvasTextBaseline} */ (textState.textBaseline);\n            this.contextTextState_ = {\n                font: textState.font,\n                textAlign: textAlign,\n                textBaseline: textState.textBaseline\n            };\n        }\n        else {\n            if (contextTextState.font != textState.font) {\n                contextTextState.font = textState.font;\n                context.font = textState.font;\n            }\n            if (contextTextState.textAlign != textAlign) {\n                contextTextState.textAlign = /** @type {CanvasTextAlign} */ (textAlign);\n                context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);\n            }\n            if (contextTextState.textBaseline != textState.textBaseline) {\n                contextTextState.textBaseline = /** @type {CanvasTextBaseline} */ (textState.textBaseline);\n                context.textBaseline = /** @type {CanvasTextBaseline} */ (textState.textBaseline);\n            }\n        }\n    };\n    /**\n     * Set the fill and stroke style for subsequent draw operations.  To clear\n     * either fill or stroke styles, pass null for the appropriate parameter.\n     *\n     * @param {import(\"../../style/Fill.js\").default} fillStyle Fill style.\n     * @param {import(\"../../style/Stroke.js\").default} strokeStyle Stroke style.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.setFillStrokeStyle = function (fillStyle, strokeStyle) {\n        if (!fillStyle) {\n            this.fillState_ = null;\n        }\n        else {\n            var fillStyleColor = fillStyle.getColor();\n            this.fillState_ = {\n                fillStyle: asColorLike(fillStyleColor ?\n                    fillStyleColor : defaultFillStyle)\n            };\n        }\n        if (!strokeStyle) {\n            this.strokeState_ = null;\n        }\n        else {\n            var strokeStyleColor = strokeStyle.getColor();\n            var strokeStyleLineCap = strokeStyle.getLineCap();\n            var strokeStyleLineDash = strokeStyle.getLineDash();\n            var strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();\n            var strokeStyleLineJoin = strokeStyle.getLineJoin();\n            var strokeStyleWidth = strokeStyle.getWidth();\n            var strokeStyleMiterLimit = strokeStyle.getMiterLimit();\n            this.strokeState_ = {\n                lineCap: strokeStyleLineCap !== undefined ?\n                    strokeStyleLineCap : defaultLineCap,\n                lineDash: strokeStyleLineDash ?\n                    strokeStyleLineDash : defaultLineDash,\n                lineDashOffset: strokeStyleLineDashOffset ?\n                    strokeStyleLineDashOffset : defaultLineDashOffset,\n                lineJoin: strokeStyleLineJoin !== undefined ?\n                    strokeStyleLineJoin : defaultLineJoin,\n                lineWidth: this.pixelRatio_ * (strokeStyleWidth !== undefined ?\n                    strokeStyleWidth : defaultLineWidth),\n                miterLimit: strokeStyleMiterLimit !== undefined ?\n                    strokeStyleMiterLimit : defaultMiterLimit,\n                strokeStyle: asColorLike(strokeStyleColor ?\n                    strokeStyleColor : defaultStrokeStyle)\n            };\n        }\n    };\n    /**\n     * Set the image style for subsequent draw operations.  Pass null to remove\n     * the image style.\n     *\n     * @param {import(\"../../style/Image.js\").default} imageStyle Image style.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.setImageStyle = function (imageStyle) {\n        if (!imageStyle) {\n            this.image_ = null;\n        }\n        else {\n            var imageAnchor = imageStyle.getAnchor();\n            // FIXME pixel ratio\n            var imageImage = imageStyle.getImage(1);\n            var imageOrigin = imageStyle.getOrigin();\n            var imageSize = imageStyle.getSize();\n            this.imageAnchorX_ = imageAnchor[0];\n            this.imageAnchorY_ = imageAnchor[1];\n            this.imageHeight_ = imageSize[1];\n            this.image_ = imageImage;\n            this.imageOpacity_ = imageStyle.getOpacity();\n            this.imageOriginX_ = imageOrigin[0];\n            this.imageOriginY_ = imageOrigin[1];\n            this.imageRotateWithView_ = imageStyle.getRotateWithView();\n            this.imageRotation_ = imageStyle.getRotation();\n            this.imageScale_ = imageStyle.getScale() * this.pixelRatio_;\n            this.imageWidth_ = imageSize[0];\n        }\n    };\n    /**\n     * Set the text style for subsequent draw operations.  Pass null to\n     * remove the text style.\n     *\n     * @param {import(\"../../style/Text.js\").default} textStyle Text style.\n     * @override\n     */\n    CanvasImmediateRenderer.prototype.setTextStyle = function (textStyle) {\n        if (!textStyle) {\n            this.text_ = '';\n        }\n        else {\n            var textFillStyle = textStyle.getFill();\n            if (!textFillStyle) {\n                this.textFillState_ = null;\n            }\n            else {\n                var textFillStyleColor = textFillStyle.getColor();\n                this.textFillState_ = {\n                    fillStyle: asColorLike(textFillStyleColor ?\n                        textFillStyleColor : defaultFillStyle)\n                };\n            }\n            var textStrokeStyle = textStyle.getStroke();\n            if (!textStrokeStyle) {\n                this.textStrokeState_ = null;\n            }\n            else {\n                var textStrokeStyleColor = textStrokeStyle.getColor();\n                var textStrokeStyleLineCap = textStrokeStyle.getLineCap();\n                var textStrokeStyleLineDash = textStrokeStyle.getLineDash();\n                var textStrokeStyleLineDashOffset = textStrokeStyle.getLineDashOffset();\n                var textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();\n                var textStrokeStyleWidth = textStrokeStyle.getWidth();\n                var textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();\n                this.textStrokeState_ = {\n                    lineCap: textStrokeStyleLineCap !== undefined ?\n                        textStrokeStyleLineCap : defaultLineCap,\n                    lineDash: textStrokeStyleLineDash ?\n                        textStrokeStyleLineDash : defaultLineDash,\n                    lineDashOffset: textStrokeStyleLineDashOffset ?\n                        textStrokeStyleLineDashOffset : defaultLineDashOffset,\n                    lineJoin: textStrokeStyleLineJoin !== undefined ?\n                        textStrokeStyleLineJoin : defaultLineJoin,\n                    lineWidth: textStrokeStyleWidth !== undefined ?\n                        textStrokeStyleWidth : defaultLineWidth,\n                    miterLimit: textStrokeStyleMiterLimit !== undefined ?\n                        textStrokeStyleMiterLimit : defaultMiterLimit,\n                    strokeStyle: asColorLike(textStrokeStyleColor ?\n                        textStrokeStyleColor : defaultStrokeStyle)\n                };\n            }\n            var textFont = textStyle.getFont();\n            var textOffsetX = textStyle.getOffsetX();\n            var textOffsetY = textStyle.getOffsetY();\n            var textRotateWithView = textStyle.getRotateWithView();\n            var textRotation = textStyle.getRotation();\n            var textScale = textStyle.getScale();\n            var textText = textStyle.getText();\n            var textTextAlign = textStyle.getTextAlign();\n            var textTextBaseline = textStyle.getTextBaseline();\n            this.textState_ = {\n                font: textFont !== undefined ?\n                    textFont : defaultFont,\n                textAlign: textTextAlign !== undefined ?\n                    textTextAlign : defaultTextAlign,\n                textBaseline: textTextBaseline !== undefined ?\n                    textTextBaseline : defaultTextBaseline\n            };\n            this.text_ = textText !== undefined ? textText : '';\n            this.textOffsetX_ =\n                textOffsetX !== undefined ? (this.pixelRatio_ * textOffsetX) : 0;\n            this.textOffsetY_ =\n                textOffsetY !== undefined ? (this.pixelRatio_ * textOffsetY) : 0;\n            this.textRotateWithView_ = textRotateWithView !== undefined ? textRotateWithView : false;\n            this.textRotation_ = textRotation !== undefined ? textRotation : 0;\n            this.textScale_ = this.pixelRatio_ * (textScale !== undefined ?\n                textScale : 1);\n        }\n    };\n    return CanvasImmediateRenderer;\n}(VectorContext));\nexport default CanvasImmediateRenderer;\n//# sourceMappingURL=Immediate.js.map","/**\n * @module ol/render/canvas/BuilderType\n */\n/**\n * @enum {string}\n */\nexport default {\n    CIRCLE: 'Circle',\n    DEFAULT: 'Default',\n    IMAGE: 'Image',\n    LINE_STRING: 'LineString',\n    POLYGON: 'Polygon',\n    TEXT: 'Text'\n};\n//# sourceMappingURL=BuilderType.js.map","/**\n * @module ol/renderer/vector\n */\nimport { getUid } from '../util.js';\nimport ImageState from '../ImageState.js';\nimport GeometryType from '../geom/GeometryType.js';\nimport BuilderType from '../render/canvas/BuilderType.js';\n/**\n * Tolerance for geometry simplification in device pixels.\n * @type {number}\n */\nvar SIMPLIFY_TOLERANCE = 0.5;\n/**\n * @const\n * @type {Object<import(\"../geom/GeometryType.js\").default,\n *                function(import(\"../render/canvas/BuilderGroup.js\").default, import(\"../geom/Geometry.js\").default,\n *                         import(\"../style/Style.js\").default, Object): void>}\n */\nvar GEOMETRY_RENDERERS = {\n    'Point': renderPointGeometry,\n    'LineString': renderLineStringGeometry,\n    'Polygon': renderPolygonGeometry,\n    'MultiPoint': renderMultiPointGeometry,\n    'MultiLineString': renderMultiLineStringGeometry,\n    'MultiPolygon': renderMultiPolygonGeometry,\n    'GeometryCollection': renderGeometryCollectionGeometry,\n    'Circle': renderCircleGeometry\n};\n/**\n * @param {import(\"../Feature.js\").FeatureLike} feature1 Feature 1.\n * @param {import(\"../Feature.js\").FeatureLike} feature2 Feature 2.\n * @return {number} Order.\n */\nexport function defaultOrder(feature1, feature2) {\n    return parseInt(getUid(feature1), 10) - parseInt(getUid(feature2), 10);\n}\n/**\n * @param {number} resolution Resolution.\n * @param {number} pixelRatio Pixel ratio.\n * @return {number} Squared pixel tolerance.\n */\nexport function getSquaredTolerance(resolution, pixelRatio) {\n    var tolerance = getTolerance(resolution, pixelRatio);\n    return tolerance * tolerance;\n}\n/**\n * @param {number} resolution Resolution.\n * @param {number} pixelRatio Pixel ratio.\n * @return {number} Pixel tolerance.\n */\nexport function getTolerance(resolution, pixelRatio) {\n    return SIMPLIFY_TOLERANCE * resolution / pixelRatio;\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Builder group.\n * @param {import(\"../geom/Circle.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderCircleGeometry(builderGroup, geometry, style, feature) {\n    var fillStyle = style.getFill();\n    var strokeStyle = style.getStroke();\n    if (fillStyle || strokeStyle) {\n        var circleReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.CIRCLE);\n        circleReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n        circleReplay.drawCircle(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(false));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {function(import(\"../events/Event.js\").default): void} listener Listener function.\n * @param {import(\"../proj.js\").TransformFunction} [opt_transform] Transform from user to view projection.\n * @return {boolean} `true` if style is loading.\n * @template T\n */\nexport function renderFeature(replayGroup, feature, style, squaredTolerance, listener, opt_transform) {\n    var loading = false;\n    var imageStyle = style.getImage();\n    if (imageStyle) {\n        var imageState = imageStyle.getImageState();\n        if (imageState == ImageState.LOADED || imageState == ImageState.ERROR) {\n            imageStyle.unlistenImageChange(listener);\n        }\n        else {\n            if (imageState == ImageState.IDLE) {\n                imageStyle.load();\n            }\n            imageState = imageStyle.getImageState();\n            imageStyle.listenImageChange(listener);\n            loading = true;\n        }\n    }\n    renderFeatureInternal(replayGroup, feature, style, squaredTolerance, opt_transform);\n    return loading;\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {import(\"../proj.js\").TransformFunction} [opt_transform] Optional transform function.\n */\nfunction renderFeatureInternal(replayGroup, feature, style, squaredTolerance, opt_transform) {\n    var geometry = style.getGeometryFunction()(feature);\n    if (!geometry) {\n        return;\n    }\n    var simplifiedGeometry = geometry.simplifyTransformed(squaredTolerance, opt_transform);\n    var renderer = style.getRenderer();\n    if (renderer) {\n        renderGeometry(replayGroup, simplifiedGeometry, style, feature);\n    }\n    else {\n        var geometryRenderer = GEOMETRY_RENDERERS[simplifiedGeometry.getType()];\n        geometryRenderer(replayGroup, simplifiedGeometry, style, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/Geometry.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderGeometry(replayGroup, geometry, style, feature) {\n    if (geometry.getType() == GeometryType.GEOMETRY_COLLECTION) {\n        var geometries = /** @type {import(\"../geom/GeometryCollection.js\").default} */ (geometry).getGeometries();\n        for (var i = 0, ii = geometries.length; i < ii; ++i) {\n            renderGeometry(replayGroup, geometries[i], style, feature);\n        }\n        return;\n    }\n    var replay = replayGroup.getBuilder(style.getZIndex(), BuilderType.DEFAULT);\n    replay.drawCustom(/** @type {import(\"../geom/SimpleGeometry.js\").default} */ (geometry), feature, style.getRenderer());\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} replayGroup Replay group.\n * @param {import(\"../geom/GeometryCollection.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderGeometryCollectionGeometry(replayGroup, geometry, style, feature) {\n    var geometries = geometry.getGeometriesArray();\n    var i, ii;\n    for (i = 0, ii = geometries.length; i < ii; ++i) {\n        var geometryRenderer = GEOMETRY_RENDERERS[geometries[i].getType()];\n        geometryRenderer(replayGroup, geometries[i], style, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/LineString.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderLineStringGeometry(builderGroup, geometry, style, feature) {\n    var strokeStyle = style.getStroke();\n    if (strokeStyle) {\n        var lineStringReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.LINE_STRING);\n        lineStringReplay.setFillStrokeStyle(null, strokeStyle);\n        lineStringReplay.drawLineString(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(false));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/MultiLineString.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderMultiLineStringGeometry(builderGroup, geometry, style, feature) {\n    var strokeStyle = style.getStroke();\n    if (strokeStyle) {\n        var lineStringReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.LINE_STRING);\n        lineStringReplay.setFillStrokeStyle(null, strokeStyle);\n        lineStringReplay.drawMultiLineString(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(false));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/MultiPolygon.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").default} feature Feature.\n */\nfunction renderMultiPolygonGeometry(builderGroup, geometry, style, feature) {\n    var fillStyle = style.getFill();\n    var strokeStyle = style.getStroke();\n    if (strokeStyle || fillStyle) {\n        var polygonReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.POLYGON);\n        polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n        polygonReplay.drawMultiPolygon(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(false));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/Point.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderPointGeometry(builderGroup, geometry, style, feature) {\n    var imageStyle = style.getImage();\n    if (imageStyle) {\n        if (imageStyle.getImageState() != ImageState.LOADED) {\n            return;\n        }\n        var imageReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.IMAGE);\n        imageReplay.setImageStyle(imageStyle, builderGroup.addDeclutter(false));\n        imageReplay.drawPoint(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(!!imageStyle));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/MultiPoint.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderMultiPointGeometry(builderGroup, geometry, style, feature) {\n    var imageStyle = style.getImage();\n    if (imageStyle) {\n        if (imageStyle.getImageState() != ImageState.LOADED) {\n            return;\n        }\n        var imageReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.IMAGE);\n        imageReplay.setImageStyle(imageStyle, builderGroup.addDeclutter(false));\n        imageReplay.drawMultiPoint(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(!!imageStyle));\n        textReplay.drawText(geometry, feature);\n    }\n}\n/**\n * @param {import(\"../render/canvas/BuilderGroup.js\").default} builderGroup Replay group.\n * @param {import(\"../geom/Polygon.js\").default|import(\"../render/Feature.js\").default} geometry Geometry.\n * @param {import(\"../style/Style.js\").default} style Style.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n */\nfunction renderPolygonGeometry(builderGroup, geometry, style, feature) {\n    var fillStyle = style.getFill();\n    var strokeStyle = style.getStroke();\n    if (fillStyle || strokeStyle) {\n        var polygonReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.POLYGON);\n        polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);\n        polygonReplay.drawPolygon(geometry, feature);\n    }\n    var textStyle = style.getText();\n    if (textStyle) {\n        var textReplay = builderGroup.getBuilder(style.getZIndex(), BuilderType.TEXT);\n        textReplay.setTextStyle(textStyle, builderGroup.addDeclutter(false));\n        textReplay.drawText(geometry, feature);\n    }\n}\n//# sourceMappingURL=vector.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/Map\n */\nimport { abstract } from '../util.js';\nimport Disposable from '../Disposable.js';\nimport { getWidth } from '../extent.js';\nimport { TRUE } from '../functions.js';\nimport { inView } from '../layer/Layer.js';\nimport { shared as iconImageCache } from '../style/IconImageCache.js';\nimport { compose as composeTransform, makeInverse } from '../transform.js';\nimport { renderDeclutterItems } from '../render.js';\nimport { wrapX } from '../coordinate.js';\n/**\n * @abstract\n */\nvar MapRenderer = /** @class */ (function (_super) {\n    __extends(MapRenderer, _super);\n    /**\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     */\n    function MapRenderer(map) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {import(\"../PluggableMap.js\").default}\n         */\n        _this.map_ = map;\n        /**\n         * @private\n         */\n        _this.declutterTree_ = null;\n        return _this;\n    }\n    /**\n     * @abstract\n     * @param {import(\"../render/EventType.js\").default} type Event type.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     */\n    MapRenderer.prototype.dispatchRenderEvent = function (type, frameState) {\n        abstract();\n    };\n    /**\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n     * @protected\n     */\n    MapRenderer.prototype.calculateMatrices2D = function (frameState) {\n        var viewState = frameState.viewState;\n        var coordinateToPixelTransform = frameState.coordinateToPixelTransform;\n        var pixelToCoordinateTransform = frameState.pixelToCoordinateTransform;\n        composeTransform(coordinateToPixelTransform, frameState.size[0] / 2, frameState.size[1] / 2, 1 / viewState.resolution, -1 / viewState.resolution, -viewState.rotation, -viewState.center[0], -viewState.center[1]);\n        makeInverse(pixelToCoordinateTransform, coordinateToPixelTransform);\n    };\n    /**\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @param {boolean} checkWrapped Check for wrapped geometries.\n     * @param {function(this: S, import(\"../Feature.js\").FeatureLike,\n     *     import(\"../layer/Layer.js\").default): T} callback Feature callback.\n     * @param {S} thisArg Value to use as `this` when executing `callback`.\n     * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n     *     function, only layers which are visible and for which this function\n     *     returns `true` will be tested for features.  By default, all visible\n     *     layers will be tested.\n     * @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.\n     * @return {T|undefined} Callback result.\n     * @template S,T,U\n     */\n    MapRenderer.prototype.forEachFeatureAtCoordinate = function (coordinate, frameState, hitTolerance, checkWrapped, callback, thisArg, layerFilter, thisArg2) {\n        var result;\n        var viewState = frameState.viewState;\n        /**\n         * @param {boolean} managed Managed layer.\n         * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n         * @param {import(\"../layer/Layer.js\").default} layer Layer.\n         * @return {?} Callback result.\n         */\n        function forEachFeatureAtCoordinate(managed, feature, layer) {\n            return callback.call(thisArg, feature, managed ? layer : null);\n        }\n        var projection = viewState.projection;\n        var translatedCoordinate = wrapX(coordinate.slice(), projection);\n        var offsets = [[0, 0]];\n        if (projection.canWrapX() && checkWrapped) {\n            var projectionExtent = projection.getExtent();\n            var worldWidth = getWidth(projectionExtent);\n            offsets.push([-worldWidth, 0], [worldWidth, 0]);\n        }\n        var layerStates = frameState.layerStatesArray;\n        var numLayers = layerStates.length;\n        var declutteredFeatures;\n        if (this.declutterTree_) {\n            declutteredFeatures = this.declutterTree_.all().map(function (entry) {\n                return entry.value;\n            });\n        }\n        var tmpCoord = [];\n        for (var i = 0; i < offsets.length; i++) {\n            for (var j = numLayers - 1; j >= 0; --j) {\n                var layerState = layerStates[j];\n                var layer = /** @type {import(\"../layer/Layer.js\").default} */ (layerState.layer);\n                if (layer.hasRenderer() && inView(layerState, viewState) && layerFilter.call(thisArg2, layer)) {\n                    var layerRenderer = layer.getRenderer();\n                    var source = layer.getSource();\n                    if (layerRenderer && source) {\n                        var coordinates = source.getWrapX() ? translatedCoordinate : coordinate;\n                        var callback_1 = forEachFeatureAtCoordinate.bind(null, layerState.managed);\n                        tmpCoord[0] = coordinates[0] + offsets[i][0];\n                        tmpCoord[1] = coordinates[1] + offsets[i][1];\n                        result = layerRenderer.forEachFeatureAtCoordinate(tmpCoord, frameState, hitTolerance, callback_1, declutteredFeatures);\n                    }\n                    if (result) {\n                        return result;\n                    }\n                }\n            }\n        }\n        return undefined;\n    };\n    /**\n     * @abstract\n     * @param {import(\"../pixel.js\").Pixel} pixel Pixel.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @param {function(this: S, import(\"../layer/Layer.js\").default, (Uint8ClampedArray|Uint8Array)): T} callback Layer\n     *     callback.\n     * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n     *     function, only layers which are visible and for which this function\n     *     returns `true` will be tested for features.  By default, all visible\n     *     layers will be tested.\n     * @return {T|undefined} Callback result.\n     * @template S,T,U\n     */\n    MapRenderer.prototype.forEachLayerAtPixel = function (pixel, frameState, hitTolerance, callback, layerFilter) {\n        return abstract();\n    };\n    /**\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @param {boolean} checkWrapped Check for wrapped geometries.\n     * @param {function(this: U, import(\"../layer/Layer.js\").default): boolean} layerFilter Layer filter\n     *     function, only layers which are visible and for which this function\n     *     returns `true` will be tested for features.  By default, all visible\n     *     layers will be tested.\n     * @param {U} thisArg Value to use as `this` when executing `layerFilter`.\n     * @return {boolean} Is there a feature at the given coordinate?\n     * @template U\n     */\n    MapRenderer.prototype.hasFeatureAtCoordinate = function (coordinate, frameState, hitTolerance, checkWrapped, layerFilter, thisArg) {\n        var hasFeature = this.forEachFeatureAtCoordinate(coordinate, frameState, hitTolerance, checkWrapped, TRUE, this, layerFilter, thisArg);\n        return hasFeature !== undefined;\n    };\n    /**\n     * @return {import(\"../PluggableMap.js\").default} Map.\n     */\n    MapRenderer.prototype.getMap = function () {\n        return this.map_;\n    };\n    /**\n     * Render.\n     * @param {?import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     */\n    MapRenderer.prototype.renderFrame = function (frameState) {\n        this.declutterTree_ = renderDeclutterItems(frameState, this.declutterTree_);\n    };\n    /**\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @protected\n     */\n    MapRenderer.prototype.scheduleExpireIconCache = function (frameState) {\n        if (iconImageCache.canExpireCache()) {\n            frameState.postRenderFunctions.push(expireIconCache);\n        }\n    };\n    return MapRenderer;\n}(Disposable));\n/**\n * @param {import(\"../PluggableMap.js\").default} map Map.\n * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n */\nfunction expireIconCache(map, frameState) {\n    iconImageCache.expire();\n}\nexport default MapRenderer;\n//# sourceMappingURL=Map.js.map","/**\n * @module ol/render\n */\nimport { DEVICE_PIXEL_RATIO } from './has.js';\nimport { apply as applyTransform, create as createTransform, multiply as multiplyTransform, scale as scaleTransform } from './transform.js';\nimport CanvasImmediateRenderer from './render/canvas/Immediate.js';\nimport { getSquaredTolerance } from './renderer/vector.js';\nimport { getUserProjection, getTransformFromProjections } from './proj.js';\n/**\n * @typedef {Object} State\n * @property {CanvasRenderingContext2D} context Canvas context that the layer is being rendered to.\n * @property {import(\"./Feature.js\").FeatureLike} feature\n * @property {import(\"./geom/SimpleGeometry.js\").default} geometry\n * @property {number} pixelRatio Pixel ratio used by the layer renderer.\n * @property {number} resolution Resolution that the render batch was created and optimized for.\n * This is not the view's resolution that is being rendered.\n * @property {number} rotation Rotation of the rendered layer in radians.\n */\n/**\n * A function to be used when sorting features before rendering.\n * It takes two instances of {@link module:ol/Feature} or\n * {@link module:ol/render/Feature} and returns a `{number}`.\n *\n * @typedef {function(import(\"./Feature.js\").FeatureLike, import(\"./Feature.js\").FeatureLike):number} OrderFunction\n */\n/**\n * @typedef {Object} ToContextOptions\n * @property {import(\"./size.js\").Size} [size] Desired size of the canvas in css\n * pixels. When provided, both canvas and css size will be set according to the\n * `pixelRatio`. If not provided, the current canvas and css sizes will not be\n * altered.\n * @property {number} [pixelRatio=window.devicePixelRatio] Pixel ratio (canvas\n * pixel to css pixel ratio) for the canvas.\n */\n/**\n * Binds a Canvas Immediate API to a canvas context, to allow drawing geometries\n * to the context's canvas.\n *\n * The units for geometry coordinates are css pixels relative to the top left\n * corner of the canvas element.\n * ```js\n * import {toContext} from 'ol/render';\n * import Fill from 'ol/style/Fill';\n * import Polygon from 'ol/geom/Polygon';\n *\n * var canvas = document.createElement('canvas');\n * var render = toContext(canvas.getContext('2d'),\n *     { size: [100, 100] });\n * render.setFillStrokeStyle(new Fill({ color: blue }));\n * render.drawPolygon(\n *     new Polygon([[[0, 0], [100, 100], [100, 0], [0, 0]]]));\n * ```\n *\n * @param {CanvasRenderingContext2D} context Canvas context.\n * @param {ToContextOptions=} opt_options Options.\n * @return {CanvasImmediateRenderer} Canvas Immediate.\n * @api\n */\nexport function toContext(context, opt_options) {\n    var canvas = context.canvas;\n    var options = opt_options ? opt_options : {};\n    var pixelRatio = options.pixelRatio || DEVICE_PIXEL_RATIO;\n    var size = options.size;\n    if (size) {\n        canvas.width = size[0] * pixelRatio;\n        canvas.height = size[1] * pixelRatio;\n        canvas.style.width = size[0] + 'px';\n        canvas.style.height = size[1] + 'px';\n    }\n    var extent = [0, 0, canvas.width, canvas.height];\n    var transform = scaleTransform(createTransform(), pixelRatio, pixelRatio);\n    return new CanvasImmediateRenderer(context, pixelRatio, extent, transform, 0);\n}\n/**\n * Gets a vector context for drawing to the event's canvas.\n * @param {import(\"./render/Event.js\").default} event Render event.\n * @returns {CanvasImmediateRenderer} Vector context.\n * @api\n */\nexport function getVectorContext(event) {\n    var frameState = event.frameState;\n    var transform = multiplyTransform(event.inversePixelTransform.slice(), frameState.coordinateToPixelTransform);\n    var squaredTolerance = getSquaredTolerance(frameState.viewState.resolution, frameState.pixelRatio);\n    var userTransform;\n    var userProjection = getUserProjection();\n    if (userProjection) {\n        userTransform = getTransformFromProjections(userProjection, frameState.viewState.projection);\n    }\n    return new CanvasImmediateRenderer(event.context, frameState.pixelRatio, frameState.extent, transform, frameState.viewState.rotation, squaredTolerance, userTransform);\n}\n/**\n * Gets the pixel of the event's canvas context from the map viewport's CSS pixel.\n * @param {import(\"./render/Event.js\").default} event Render event.\n * @param {import(\"./pixel.js\").Pixel} pixel CSS pixel relative to the top-left\n * corner of the map viewport.\n * @returns {import(\"./pixel.js\").Pixel} Pixel on the event's canvas context.\n * @api\n */\nexport function getRenderPixel(event, pixel) {\n    var result = pixel.slice(0);\n    applyTransform(event.inversePixelTransform.slice(), result);\n    return result;\n}\n/**\n * @param {import(\"./PluggableMap.js\").FrameState} frameState Frame state.\n * @param {?} declutterTree Declutter tree.\n * @returns {?} Declutter tree.\n */\nexport function renderDeclutterItems(frameState, declutterTree) {\n    if (declutterTree) {\n        declutterTree.clear();\n    }\n    var items = frameState.declutterItems;\n    for (var z = items.length - 1; z >= 0; --z) {\n        var item = items[z];\n        var zIndexItems = item.items;\n        for (var i = 0, ii = zIndexItems.length; i < ii; i += 3) {\n            declutterTree = zIndexItems[i].renderDeclutter(zIndexItems[i + 1], zIndexItems[i + 2], item.opacity, declutterTree);\n        }\n    }\n    items.length = 0;\n    return declutterTree;\n}\n//# sourceMappingURL=render.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/Composite\n */\nimport { CLASS_UNSELECTABLE } from '../css.js';\nimport { inView } from '../layer/Layer.js';\nimport RenderEvent from '../render/Event.js';\nimport RenderEventType from '../render/EventType.js';\nimport MapRenderer from './Map.js';\nimport SourceState from '../source/State.js';\nimport { replaceChildren } from '../dom.js';\nimport { listen, unlistenByKey } from '../events.js';\nimport { checkedFonts } from '../render/canvas.js';\nimport ObjectEventType from '../ObjectEventType.js';\n/**\n * @classdesc\n * Canvas map renderer.\n * @api\n */\nvar CompositeMapRenderer = /** @class */ (function (_super) {\n    __extends(CompositeMapRenderer, _super);\n    /**\n     * @param {import(\"../PluggableMap.js\").default} map Map.\n     */\n    function CompositeMapRenderer(map) {\n        var _this = _super.call(this, map) || this;\n        /**\n         * @type {import(\"../events.js\").EventsKey}\n         */\n        _this.fontChangeListenerKey_ = listen(checkedFonts, ObjectEventType.PROPERTYCHANGE, map.redrawText.bind(map));\n        /**\n         * @private\n         * @type {HTMLDivElement}\n         */\n        _this.element_ = document.createElement('div');\n        var style = _this.element_.style;\n        style.position = 'absolute';\n        style.width = '100%';\n        style.height = '100%';\n        style.zIndex = '0';\n        _this.element_.className = CLASS_UNSELECTABLE + ' ol-layers';\n        var container = map.getViewport();\n        container.insertBefore(_this.element_, container.firstChild || null);\n        /**\n         * @private\n         * @type {Array<HTMLElement>}\n         */\n        _this.children_ = [];\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.renderedVisible_ = true;\n        return _this;\n    }\n    /**\n     * @param {import(\"../render/EventType.js\").default} type Event type.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     */\n    CompositeMapRenderer.prototype.dispatchRenderEvent = function (type, frameState) {\n        var map = this.getMap();\n        if (map.hasListener(type)) {\n            var event_1 = new RenderEvent(type, undefined, frameState);\n            map.dispatchEvent(event_1);\n        }\n    };\n    CompositeMapRenderer.prototype.disposeInternal = function () {\n        unlistenByKey(this.fontChangeListenerKey_);\n        this.element_.parentNode.removeChild(this.element_);\n        _super.prototype.disposeInternal.call(this);\n    };\n    /**\n     * @inheritDoc\n     */\n    CompositeMapRenderer.prototype.renderFrame = function (frameState) {\n        if (!frameState) {\n            if (this.renderedVisible_) {\n                this.element_.style.display = 'none';\n                this.renderedVisible_ = false;\n            }\n            return;\n        }\n        this.calculateMatrices2D(frameState);\n        this.dispatchRenderEvent(RenderEventType.PRECOMPOSE, frameState);\n        var layerStatesArray = frameState.layerStatesArray.sort(function (a, b) {\n            return a.zIndex - b.zIndex;\n        });\n        var viewState = frameState.viewState;\n        this.children_.length = 0;\n        var previousElement = null;\n        for (var i = 0, ii = layerStatesArray.length; i < ii; ++i) {\n            var layerState = layerStatesArray[i];\n            frameState.layerIndex = i;\n            if (!inView(layerState, viewState) ||\n                (layerState.sourceState != SourceState.READY && layerState.sourceState != SourceState.UNDEFINED)) {\n                continue;\n            }\n            var layer = layerState.layer;\n            var element = layer.render(frameState, previousElement);\n            if (!element) {\n                continue;\n            }\n            if (element !== previousElement) {\n                this.children_.push(element);\n                previousElement = element;\n            }\n        }\n        _super.prototype.renderFrame.call(this, frameState);\n        replaceChildren(this.element_, this.children_);\n        this.dispatchRenderEvent(RenderEventType.POSTCOMPOSE, frameState);\n        if (!this.renderedVisible_) {\n            this.element_.style.display = '';\n            this.renderedVisible_ = true;\n        }\n        this.scheduleExpireIconCache(frameState);\n    };\n    /**\n     * @inheritDoc\n     */\n    CompositeMapRenderer.prototype.forEachLayerAtPixel = function (pixel, frameState, hitTolerance, callback, layerFilter) {\n        var viewState = frameState.viewState;\n        var layerStates = frameState.layerStatesArray;\n        var numLayers = layerStates.length;\n        for (var i = numLayers - 1; i >= 0; --i) {\n            var layerState = layerStates[i];\n            var layer = layerState.layer;\n            if (layer.hasRenderer() && inView(layerState, viewState) && layerFilter(layer)) {\n                var layerRenderer = layer.getRenderer();\n                var data = layerRenderer.getDataAtPixel(pixel, frameState, hitTolerance);\n                if (data) {\n                    var result = callback(layer, data);\n                    if (result) {\n                        return result;\n                    }\n                }\n            }\n        }\n        return undefined;\n    };\n    return CompositeMapRenderer;\n}(MapRenderer));\nexport default CompositeMapRenderer;\n//# sourceMappingURL=Composite.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Map\n */\nimport PluggableMap from './PluggableMap.js';\nimport { defaults as defaultControls } from './control.js';\nimport { defaults as defaultInteractions } from './interaction.js';\nimport { assign } from './obj.js';\nimport CompositeMapRenderer from './renderer/Composite.js';\n/**\n * @classdesc\n * The map is the core component of OpenLayers. For a map to render, a view,\n * one or more layers, and a target container are needed:\n *\n *     import Map from 'ol/Map';\n *     import View from 'ol/View';\n *     import TileLayer from 'ol/layer/Tile';\n *     import OSM from 'ol/source/OSM';\n *\n *     var map = new Map({\n *       view: new View({\n *         center: [0, 0],\n *         zoom: 1\n *       }),\n *       layers: [\n *         new TileLayer({\n *           source: new OSM()\n *         })\n *       ],\n *       target: 'map'\n *     });\n *\n * The above snippet creates a map using a {@link module:ol/layer/Tile} to\n * display {@link module:ol/source/OSM~OSM} OSM data and render it to a DOM\n * element with the id `map`.\n *\n * The constructor places a viewport container (with CSS class name\n * `ol-viewport`) in the target element (see `getViewport()`), and then two\n * further elements within the viewport: one with CSS class name\n * `ol-overlaycontainer-stopevent` for controls and some overlays, and one with\n * CSS class name `ol-overlaycontainer` for other overlays (see the `stopEvent`\n * option of {@link module:ol/Overlay~Overlay} for the difference). The map\n * itself is placed in a further element within the viewport.\n *\n * Layers are stored as a {@link module:ol/Collection~Collection} in\n * layerGroups. A top-level group is provided by the library. This is what is\n * accessed by `getLayerGroup` and `setLayerGroup`. Layers entered in the\n * options are added to this group, and `addLayer` and `removeLayer` change the\n * layer collection in the group. `getLayers` is a convenience function for\n * `getLayerGroup().getLayers()`. Note that {@link module:ol/layer/Group~Group}\n * is a subclass of {@link module:ol/layer/Base}, so layers entered in the\n * options or added with `addLayer` can be groups, which can contain further\n * groups, and so on.\n *\n * @api\n */\nvar Map = /** @class */ (function (_super) {\n    __extends(Map, _super);\n    /**\n     * @param {import(\"./PluggableMap.js\").MapOptions} options Map options.\n     */\n    function Map(options) {\n        var _this = this;\n        options = assign({}, options);\n        if (!options.controls) {\n            options.controls = defaultControls();\n        }\n        if (!options.interactions) {\n            options.interactions = defaultInteractions();\n        }\n        _this = _super.call(this, options) || this;\n        return _this;\n    }\n    Map.prototype.createRenderer = function () {\n        return new CompositeMapRenderer(this);\n    };\n    return Map;\n}(PluggableMap));\nexport default Map;\n//# sourceMappingURL=Map.js.map","/**\n * @module ol/control\n */\nimport Collection from './Collection.js';\nimport Attribution from './control/Attribution.js';\nimport Rotate from './control/Rotate.js';\nimport Zoom from './control/Zoom.js';\nexport { default as Attribution } from './control/Attribution.js';\nexport { default as Control } from './control/Control.js';\nexport { default as FullScreen } from './control/FullScreen.js';\nexport { default as MousePosition } from './control/MousePosition.js';\nexport { default as OverviewMap } from './control/OverviewMap.js';\nexport { default as Rotate } from './control/Rotate.js';\nexport { default as ScaleLine } from './control/ScaleLine.js';\nexport { default as Zoom } from './control/Zoom.js';\nexport { default as ZoomSlider } from './control/ZoomSlider.js';\nexport { default as ZoomToExtent } from './control/ZoomToExtent.js';\n/**\n * @typedef {Object} DefaultsOptions\n * @property {boolean} [attribution=true] Include\n * {@link module:ol/control/Attribution~Attribution}.\n * @property {import(\"./control/Attribution.js\").Options} [attributionOptions]\n * Options for {@link module:ol/control/Attribution~Attribution}.\n * @property {boolean} [rotate=true] Include\n * {@link module:ol/control/Rotate~Rotate}.\n * @property {import(\"./control/Rotate.js\").Options} [rotateOptions] Options\n * for {@link module:ol/control/Rotate~Rotate}.\n * @property {boolean} [zoom] Include {@link module:ol/control/Zoom~Zoom}.\n * @property {import(\"./control/Zoom.js\").Options} [zoomOptions] Options for\n * {@link module:ol/control/Zoom~Zoom}.\n * @api\n */\n/**\n * Set of controls included in maps by default. Unless configured otherwise,\n * this returns a collection containing an instance of each of the following\n * controls:\n * * {@link module:ol/control/Zoom~Zoom}\n * * {@link module:ol/control/Rotate~Rotate}\n * * {@link module:ol/control/Attribution~Attribution}\n *\n * @param {DefaultsOptions=} opt_options\n * Defaults options.\n * @return {Collection<import(\"./control/Control.js\").default>}\n * Controls.\n * @api\n */\nexport function defaults(opt_options) {\n    var options = opt_options ? opt_options : {};\n    var controls = new Collection();\n    var zoomControl = options.zoom !== undefined ? options.zoom : true;\n    if (zoomControl) {\n        controls.push(new Zoom(options.zoomOptions));\n    }\n    var rotateControl = options.rotate !== undefined ? options.rotate : true;\n    if (rotateControl) {\n        controls.push(new Rotate(options.rotateOptions));\n    }\n    var attributionControl = options.attribution !== undefined ?\n        options.attribution : true;\n    if (attributionControl) {\n        controls.push(new Attribution(options.attributionOptions));\n    }\n    return controls;\n}\n//# sourceMappingURL=control.js.map","/**\n * @module ol/interaction\n */\nimport Collection from './Collection.js';\nimport Kinetic from './Kinetic.js';\nimport DoubleClickZoom from './interaction/DoubleClickZoom.js';\nimport DragPan from './interaction/DragPan.js';\nimport DragRotate from './interaction/DragRotate.js';\nimport DragZoom from './interaction/DragZoom.js';\nimport KeyboardPan from './interaction/KeyboardPan.js';\nimport KeyboardZoom from './interaction/KeyboardZoom.js';\nimport MouseWheelZoom from './interaction/MouseWheelZoom.js';\nimport PinchRotate from './interaction/PinchRotate.js';\nimport PinchZoom from './interaction/PinchZoom.js';\nimport { focus } from './events/condition.js';\nexport { default as DoubleClickZoom } from './interaction/DoubleClickZoom.js';\nexport { default as DragAndDrop } from './interaction/DragAndDrop.js';\nexport { default as DragBox } from './interaction/DragBox.js';\nexport { default as DragPan } from './interaction/DragPan.js';\nexport { default as DragRotate } from './interaction/DragRotate.js';\nexport { default as DragRotateAndZoom } from './interaction/DragRotateAndZoom.js';\nexport { default as DragZoom } from './interaction/DragZoom.js';\nexport { default as Draw } from './interaction/Draw.js';\nexport { default as Extent } from './interaction/Extent.js';\nexport { default as Interaction } from './interaction/Interaction.js';\nexport { default as KeyboardPan } from './interaction/KeyboardPan.js';\nexport { default as KeyboardZoom } from './interaction/KeyboardZoom.js';\nexport { default as Modify } from './interaction/Modify.js';\nexport { default as MouseWheelZoom } from './interaction/MouseWheelZoom.js';\nexport { default as PinchRotate } from './interaction/PinchRotate.js';\nexport { default as PinchZoom } from './interaction/PinchZoom.js';\nexport { default as Pointer } from './interaction/Pointer.js';\nexport { default as Select } from './interaction/Select.js';\nexport { default as Snap } from './interaction/Snap.js';\nexport { default as Translate } from './interaction/Translate.js';\n/**\n * @typedef {Object} DefaultsOptions\n * @property {boolean} [altShiftDragRotate=true] Whether Alt-Shift-drag rotate is\n * desired.\n * @property {boolean} [onFocusOnly=false] Interact only when the map has the\n * focus. This affects the `MouseWheelZoom` and `DragPan` interactions and is\n * useful when page scroll is desired for maps that do not have the browser's\n * focus.\n * @property {boolean} [doubleClickZoom=true] Whether double click zoom is\n * desired.\n * @property {boolean} [keyboard=true] Whether keyboard interaction is desired.\n * @property {boolean} [mouseWheelZoom=true] Whether mousewheel zoom is desired.\n * @property {boolean} [shiftDragZoom=true] Whether Shift-drag zoom is desired.\n * @property {boolean} [dragPan=true] Whether drag pan is desired.\n * @property {boolean} [pinchRotate=true] Whether pinch rotate is desired.\n * @property {boolean} [pinchZoom=true] Whether pinch zoom is desired.\n * @property {number} [zoomDelta] Zoom level delta when using keyboard or double click zoom.\n * @property {number} [zoomDuration] Duration of the zoom animation in\n * milliseconds.\n */\n/**\n * Set of interactions included in maps by default. Specific interactions can be\n * excluded by setting the appropriate option to false in the constructor\n * options, but the order of the interactions is fixed.  If you want to specify\n * a different order for interactions, you will need to create your own\n * {@link module:ol/interaction/Interaction} instances and insert\n * them into a {@link module:ol/Collection} in the order you want\n * before creating your {@link module:ol/Map~Map} instance. Changing the order can\n * be of interest if the event propagation needs to be stopped at a point.\n * The default set of interactions, in sequence, is:\n * * {@link module:ol/interaction/DragRotate~DragRotate}\n * * {@link module:ol/interaction/DoubleClickZoom~DoubleClickZoom}\n * * {@link module:ol/interaction/DragPan~DragPan}\n * * {@link module:ol/interaction/PinchRotate~PinchRotate}\n * * {@link module:ol/interaction/PinchZoom~PinchZoom}\n * * {@link module:ol/interaction/KeyboardPan~KeyboardPan}\n * * {@link module:ol/interaction/KeyboardZoom~KeyboardZoom}\n * * {@link module:ol/interaction/MouseWheelZoom~MouseWheelZoom}\n * * {@link module:ol/interaction/DragZoom~DragZoom}\n *\n * @param {DefaultsOptions=} opt_options Defaults options.\n * @return {import(\"./Collection.js\").default<import(\"./interaction/Interaction.js\").default>}\n * A collection of interactions to be used with the {@link module:ol/Map~Map}\n * constructor's `interactions` option.\n * @api\n */\nexport function defaults(opt_options) {\n    var options = opt_options ? opt_options : {};\n    var interactions = new Collection();\n    var kinetic = new Kinetic(-0.005, 0.05, 100);\n    var altShiftDragRotate = options.altShiftDragRotate !== undefined ?\n        options.altShiftDragRotate : true;\n    if (altShiftDragRotate) {\n        interactions.push(new DragRotate());\n    }\n    var doubleClickZoom = options.doubleClickZoom !== undefined ?\n        options.doubleClickZoom : true;\n    if (doubleClickZoom) {\n        interactions.push(new DoubleClickZoom({\n            delta: options.zoomDelta,\n            duration: options.zoomDuration\n        }));\n    }\n    var dragPan = options.dragPan !== undefined ? options.dragPan : true;\n    if (dragPan) {\n        interactions.push(new DragPan({\n            condition: options.onFocusOnly ? focus : undefined,\n            kinetic: kinetic\n        }));\n    }\n    var pinchRotate = options.pinchRotate !== undefined ? options.pinchRotate :\n        true;\n    if (pinchRotate) {\n        interactions.push(new PinchRotate());\n    }\n    var pinchZoom = options.pinchZoom !== undefined ? options.pinchZoom : true;\n    if (pinchZoom) {\n        interactions.push(new PinchZoom({\n            duration: options.zoomDuration\n        }));\n    }\n    var keyboard = options.keyboard !== undefined ? options.keyboard : true;\n    if (keyboard) {\n        interactions.push(new KeyboardPan());\n        interactions.push(new KeyboardZoom({\n            delta: options.zoomDelta,\n            duration: options.zoomDuration\n        }));\n    }\n    var mouseWheelZoom = options.mouseWheelZoom !== undefined ?\n        options.mouseWheelZoom : true;\n    if (mouseWheelZoom) {\n        interactions.push(new MouseWheelZoom({\n            condition: options.onFocusOnly ? focus : undefined,\n            duration: options.zoomDuration\n        }));\n    }\n    var shiftDragZoom = options.shiftDragZoom !== undefined ?\n        options.shiftDragZoom : true;\n    if (shiftDragZoom) {\n        interactions.push(new DragZoom({\n            duration: options.zoomDuration\n        }));\n    }\n    return interactions;\n}\n//# sourceMappingURL=interaction.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Tile\n */\nimport TileState from './TileState.js';\nimport { easeIn } from './easing.js';\nimport EventTarget from './events/Target.js';\nimport EventType from './events/EventType.js';\nimport { abstract } from './util.js';\n/**\n * A function that takes an {@link module:ol/Tile} for the tile and a\n * `{string}` for the url as arguments. The default is\n * ```js\n * source.setTileLoadFunction(function(tile, src) {\n *   tile.getImage().src = src;\n * });\n * ```\n * For more fine grained control, the load function can use fetch or XMLHttpRequest and involve\n * error handling:\n *\n * ```js\n * import TileState from 'ol/TileState';\n *\n * source.setTileLoadFunction(function(tile, src) {\n *   var xhr = new XMLHttpRequest();\n *   xhr.responseType = 'blob';\n *   xhr.addEventListener('loadend', function (evt) {\n *     var data = this.response;\n *     if (data !== undefined) {\n *       tile.getImage().src = URL.createObjectURL(data);\n *     } else {\n *       tile.setState(TileState.ERROR);\n *     }\n *   });\n *   xhr.addEventListener('error', function () {\n *     tile.setState(TileState.ERROR);\n *   });\n *   xhr.open('GET', src);\n *   xhr.send();\n * });\n * ```\n *\n * @typedef {function(Tile, string): void} LoadFunction\n * @api\n */\n/**\n * {@link module:ol/source/Tile~Tile} sources use a function of this type to get\n * the url that provides a tile for a given tile coordinate.\n *\n * This function takes an {@link module:ol/tilecoord~TileCoord} for the tile\n * coordinate, a `{number}` representing the pixel ratio and a\n * {@link module:ol/proj/Projection} for the projection  as arguments\n * and returns a `{string}` representing the tile URL, or undefined if no tile\n * should be requested for the passed tile coordinate.\n *\n * @typedef {function(import(\"./tilecoord.js\").TileCoord, number,\n *           import(\"./proj/Projection.js\").default): (string|undefined)} UrlFunction\n * @api\n */\n/**\n * @typedef {Object} Options\n * @property {number} [transition=250] A duration for tile opacity\n * transitions in milliseconds. A duration of 0 disables the opacity transition.\n * @api\n */\n/**\n * @classdesc\n * Base class for tiles.\n *\n * @abstract\n */\nvar Tile = /** @class */ (function (_super) {\n    __extends(Tile, _super);\n    /**\n     * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {TileState} state State.\n     * @param {Options=} opt_options Tile options.\n     */\n    function Tile(tileCoord, state, opt_options) {\n        var _this = _super.call(this) || this;\n        var options = opt_options ? opt_options : {};\n        /**\n         * @type {import(\"./tilecoord.js\").TileCoord}\n         */\n        _this.tileCoord = tileCoord;\n        /**\n         * @protected\n         * @type {TileState}\n         */\n        _this.state = state;\n        /**\n         * An \"interim\" tile for this tile. The interim tile may be used while this\n         * one is loading, for \"smooth\" transitions when changing params/dimensions\n         * on the source.\n         * @type {Tile}\n         */\n        _this.interimTile = null;\n        /**\n         * The tile is available at the highest possible resolution. Subclasses can\n         * set this to `false` initially. Tile load listeners will not be\n         * unregistered before this is set to `true` and a `#changed()` is called.\n         * @type {boolean}\n         */\n        _this.hifi = true;\n        /**\n         * A key assigned to the tile. This is used by the tile source to determine\n         * if this tile can effectively be used, or if a new tile should be created\n         * and this one be used as an interim tile for this new tile.\n         * @type {string}\n         */\n        _this.key = '';\n        /**\n         * The duration for the opacity transition.\n         * @type {number}\n         */\n        _this.transition_ = options.transition === undefined ? 250 : options.transition;\n        /**\n         * Lookup of start times for rendering transitions.  If the start time is\n         * equal to -1, the transition is complete.\n         * @type {Object<string, number>}\n         */\n        _this.transitionStarts_ = {};\n        return _this;\n    }\n    /**\n     * @protected\n     */\n    Tile.prototype.changed = function () {\n        this.dispatchEvent(EventType.CHANGE);\n    };\n    /**\n     * Called by the tile cache when the tile is removed from the cache due to expiry\n     */\n    Tile.prototype.release = function () {\n    };\n    /**\n     * @return {string} Key.\n     */\n    Tile.prototype.getKey = function () {\n        return this.key + '/' + this.tileCoord;\n    };\n    /**\n     * Get the interim tile most suitable for rendering using the chain of interim\n     * tiles. This corresponds to the  most recent tile that has been loaded, if no\n     * such tile exists, the original tile is returned.\n     * @return {!Tile} Best tile for rendering.\n     */\n    Tile.prototype.getInterimTile = function () {\n        if (!this.interimTile) {\n            //empty chain\n            return this;\n        }\n        var tile = this.interimTile;\n        // find the first loaded tile and return it. Since the chain is sorted in\n        // decreasing order of creation time, there is no need to search the remainder\n        // of the list (all those tiles correspond to older requests and will be\n        // cleaned up by refreshInterimChain)\n        do {\n            if (tile.getState() == TileState.LOADED) {\n                // Show tile immediately instead of fading it in after loading, because\n                // the interim tile is in place already\n                this.transition_ = 0;\n                return tile;\n            }\n            tile = tile.interimTile;\n        } while (tile);\n        // we can not find a better tile\n        return this;\n    };\n    /**\n     * Goes through the chain of interim tiles and discards sections of the chain\n     * that are no longer relevant.\n     */\n    Tile.prototype.refreshInterimChain = function () {\n        if (!this.interimTile) {\n            return;\n        }\n        var tile = this.interimTile;\n        var prev = /** @type {Tile} */ (this);\n        do {\n            if (tile.getState() == TileState.LOADED) {\n                //we have a loaded tile, we can discard the rest of the list\n                //we would could abort any LOADING tile request\n                //older than this tile (i.e. any LOADING tile following this entry in the chain)\n                tile.interimTile = null;\n                break;\n            }\n            else if (tile.getState() == TileState.LOADING) {\n                //keep this LOADING tile any loaded tiles later in the chain are\n                //older than this tile, so we're still interested in the request\n                prev = tile;\n            }\n            else if (tile.getState() == TileState.IDLE) {\n                //the head of the list is the most current tile, we don't need\n                //to start any other requests for this chain\n                prev.interimTile = tile.interimTile;\n            }\n            else {\n                prev = tile;\n            }\n            tile = prev.interimTile;\n        } while (tile);\n    };\n    /**\n     * Get the tile coordinate for this tile.\n     * @return {import(\"./tilecoord.js\").TileCoord} The tile coordinate.\n     * @api\n     */\n    Tile.prototype.getTileCoord = function () {\n        return this.tileCoord;\n    };\n    /**\n     * @return {TileState} State.\n     */\n    Tile.prototype.getState = function () {\n        return this.state;\n    };\n    /**\n     * Sets the state of this tile. If you write your own {@link module:ol/Tile~LoadFunction tileLoadFunction} ,\n     * it is important to set the state correctly to {@link module:ol/TileState~ERROR}\n     * when the tile cannot be loaded. Otherwise the tile cannot be removed from\n     * the tile queue and will block other requests.\n     * @param {TileState} state State.\n     * @api\n     */\n    Tile.prototype.setState = function (state) {\n        if (this.state !== TileState.ERROR && this.state > state) {\n            throw new Error('Tile load sequence violation');\n        }\n        this.state = state;\n        this.changed();\n    };\n    /**\n     * Load the image or retry if loading previously failed.\n     * Loading is taken care of by the tile queue, and calling this method is\n     * only needed for preloading or for reloading in case of an error.\n     * @abstract\n     * @api\n     */\n    Tile.prototype.load = function () {\n        abstract();\n    };\n    /**\n     * Get the alpha value for rendering.\n     * @param {string} id An id for the renderer.\n     * @param {number} time The render frame time.\n     * @return {number} A number between 0 and 1.\n     */\n    Tile.prototype.getAlpha = function (id, time) {\n        if (!this.transition_) {\n            return 1;\n        }\n        var start = this.transitionStarts_[id];\n        if (!start) {\n            start = time;\n            this.transitionStarts_[id] = start;\n        }\n        else if (start === -1) {\n            return 1;\n        }\n        var delta = time - start + (1000 / 60); // avoid rendering at 0\n        if (delta >= this.transition_) {\n            return 1;\n        }\n        return easeIn(delta / this.transition_);\n    };\n    /**\n     * Determine if a tile is in an alpha transition.  A tile is considered in\n     * transition if tile.getAlpha() has not yet been called or has been called\n     * and returned 1.\n     * @param {string} id An id for the renderer.\n     * @return {boolean} The tile is in transition.\n     */\n    Tile.prototype.inTransition = function (id) {\n        if (!this.transition_) {\n            return false;\n        }\n        return this.transitionStarts_[id] !== -1;\n    };\n    /**\n     * Mark a transition as complete.\n     * @param {string} id An id for the renderer.\n     */\n    Tile.prototype.endTransition = function (id) {\n        if (this.transition_) {\n            this.transitionStarts_[id] = -1;\n        }\n    };\n    return Tile;\n}(EventTarget));\nexport default Tile;\n//# sourceMappingURL=Tile.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/ImageTile\n */\nimport Tile from './Tile.js';\nimport TileState from './TileState.js';\nimport { createCanvasContext2D } from './dom.js';\nimport { listenImage } from './Image.js';\nvar ImageTile = /** @class */ (function (_super) {\n    __extends(ImageTile, _super);\n    /**\n     * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {TileState} state State.\n     * @param {string} src Image source URI.\n     * @param {?string} crossOrigin Cross origin.\n     * @param {import(\"./Tile.js\").LoadFunction} tileLoadFunction Tile load function.\n     * @param {import(\"./Tile.js\").Options=} opt_options Tile options.\n     */\n    function ImageTile(tileCoord, state, src, crossOrigin, tileLoadFunction, opt_options) {\n        var _this = _super.call(this, tileCoord, state, opt_options) || this;\n        /**\n         * @private\n         * @type {?string}\n         */\n        _this.crossOrigin_ = crossOrigin;\n        /**\n         * Image URI\n         *\n         * @private\n         * @type {string}\n         */\n        _this.src_ = src;\n        /**\n         * @private\n         * @type {HTMLImageElement|HTMLCanvasElement}\n         */\n        _this.image_ = new Image();\n        if (crossOrigin !== null) {\n            _this.image_.crossOrigin = crossOrigin;\n        }\n        /**\n         * @private\n         * @type {?function():void}\n         */\n        _this.unlisten_ = null;\n        /**\n         * @private\n         * @type {import(\"./Tile.js\").LoadFunction}\n         */\n        _this.tileLoadFunction_ = tileLoadFunction;\n        return _this;\n    }\n    /**\n     * Get the HTML image element for this tile (may be a Canvas, Image, or Video).\n     * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n     * @api\n     */\n    ImageTile.prototype.getImage = function () {\n        return this.image_;\n    };\n    /**\n     * @inheritDoc\n     */\n    ImageTile.prototype.getKey = function () {\n        return this.src_;\n    };\n    /**\n     * Tracks loading or read errors.\n     *\n     * @private\n     */\n    ImageTile.prototype.handleImageError_ = function () {\n        this.state = TileState.ERROR;\n        this.unlistenImage_();\n        this.image_ = getBlankImage();\n        this.changed();\n    };\n    /**\n     * Tracks successful image load.\n     *\n     * @private\n     */\n    ImageTile.prototype.handleImageLoad_ = function () {\n        var image = /** @type {HTMLImageElement} */ (this.image_);\n        if (image.naturalWidth && image.naturalHeight) {\n            this.state = TileState.LOADED;\n        }\n        else {\n            this.state = TileState.EMPTY;\n        }\n        this.unlistenImage_();\n        this.changed();\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    ImageTile.prototype.load = function () {\n        if (this.state == TileState.ERROR) {\n            this.state = TileState.IDLE;\n            this.image_ = new Image();\n            if (this.crossOrigin_ !== null) {\n                this.image_.crossOrigin = this.crossOrigin_;\n            }\n        }\n        if (this.state == TileState.IDLE) {\n            this.state = TileState.LOADING;\n            this.changed();\n            this.tileLoadFunction_(this, this.src_);\n            this.unlisten_ = listenImage(this.image_, this.handleImageLoad_.bind(this), this.handleImageError_.bind(this));\n        }\n    };\n    /**\n     * Discards event handlers which listen for load completion or errors.\n     *\n     * @private\n     */\n    ImageTile.prototype.unlistenImage_ = function () {\n        if (this.unlisten_) {\n            this.unlisten_();\n            this.unlisten_ = null;\n        }\n    };\n    return ImageTile;\n}(Tile));\n/**\n * Get a 1-pixel blank image.\n * @return {HTMLCanvasElement} Blank image.\n */\nfunction getBlankImage() {\n    var ctx = createCanvasContext2D(1, 1);\n    ctx.fillStyle = 'rgba(0,0,0,0)';\n    ctx.fillRect(0, 0, 1, 1);\n    return ctx.canvas;\n}\nexport default ImageTile;\n//# sourceMappingURL=ImageTile.js.map","/**\n * @module ol/structs/LRUCache\n */\nimport { assert } from '../asserts.js';\n/**\n * @typedef {Object} Entry\n * @property {string} key_\n * @property {Object} newer\n * @property {Object} older\n * @property {*} value_\n */\n/**\n * @classdesc\n * Implements a Least-Recently-Used cache where the keys do not conflict with\n * Object's properties (e.g. 'hasOwnProperty' is not allowed as a key). Expiring\n * items from the cache is the responsibility of the user.\n *\n * @fires import(\"../events/Event.js\").default\n * @template T\n */\nvar LRUCache = /** @class */ (function () {\n    /**\n     * @param {number=} opt_highWaterMark High water mark.\n     */\n    function LRUCache(opt_highWaterMark) {\n        /**\n         * @type {number}\n         */\n        this.highWaterMark = opt_highWaterMark !== undefined ? opt_highWaterMark : 2048;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.count_ = 0;\n        /**\n         * @private\n         * @type {!Object<string, Entry>}\n         */\n        this.entries_ = {};\n        /**\n         * @private\n         * @type {?Entry}\n         */\n        this.oldest_ = null;\n        /**\n         * @private\n         * @type {?Entry}\n         */\n        this.newest_ = null;\n    }\n    /**\n     * @return {boolean} Can expire cache.\n     */\n    LRUCache.prototype.canExpireCache = function () {\n        return this.getCount() > this.highWaterMark;\n    };\n    /**\n     * FIXME empty description for jsdoc\n     */\n    LRUCache.prototype.clear = function () {\n        this.count_ = 0;\n        this.entries_ = {};\n        this.oldest_ = null;\n        this.newest_ = null;\n    };\n    /**\n     * @param {string} key Key.\n     * @return {boolean} Contains key.\n     */\n    LRUCache.prototype.containsKey = function (key) {\n        return this.entries_.hasOwnProperty(key);\n    };\n    /**\n     * @param {function(T, string, LRUCache<T>): ?} f The function\n     *     to call for every entry from the oldest to the newer. This function takes\n     *     3 arguments (the entry value, the entry key and the LRUCache object).\n     *     The return value is ignored.\n     */\n    LRUCache.prototype.forEach = function (f) {\n        var entry = this.oldest_;\n        while (entry) {\n            f(entry.value_, entry.key_, this);\n            entry = entry.newer;\n        }\n    };\n    /**\n     * @param {string} key Key.\n     * @param {*=} opt_options Options (reserverd for subclasses).\n     * @return {T} Value.\n     */\n    LRUCache.prototype.get = function (key, opt_options) {\n        var entry = this.entries_[key];\n        assert(entry !== undefined, 15); // Tried to get a value for a key that does not exist in the cache\n        if (entry === this.newest_) {\n            return entry.value_;\n        }\n        else if (entry === this.oldest_) {\n            this.oldest_ = /** @type {Entry} */ (this.oldest_.newer);\n            this.oldest_.older = null;\n        }\n        else {\n            entry.newer.older = entry.older;\n            entry.older.newer = entry.newer;\n        }\n        entry.newer = null;\n        entry.older = this.newest_;\n        this.newest_.newer = entry;\n        this.newest_ = entry;\n        return entry.value_;\n    };\n    /**\n     * Remove an entry from the cache.\n     * @param {string} key The entry key.\n     * @return {T} The removed entry.\n     */\n    LRUCache.prototype.remove = function (key) {\n        var entry = this.entries_[key];\n        assert(entry !== undefined, 15); // Tried to get a value for a key that does not exist in the cache\n        if (entry === this.newest_) {\n            this.newest_ = /** @type {Entry} */ (entry.older);\n            if (this.newest_) {\n                this.newest_.newer = null;\n            }\n        }\n        else if (entry === this.oldest_) {\n            this.oldest_ = /** @type {Entry} */ (entry.newer);\n            if (this.oldest_) {\n                this.oldest_.older = null;\n            }\n        }\n        else {\n            entry.newer.older = entry.older;\n            entry.older.newer = entry.newer;\n        }\n        delete this.entries_[key];\n        --this.count_;\n        return entry.value_;\n    };\n    /**\n     * @return {number} Count.\n     */\n    LRUCache.prototype.getCount = function () {\n        return this.count_;\n    };\n    /**\n     * @return {Array<string>} Keys.\n     */\n    LRUCache.prototype.getKeys = function () {\n        var keys = new Array(this.count_);\n        var i = 0;\n        var entry;\n        for (entry = this.newest_; entry; entry = entry.older) {\n            keys[i++] = entry.key_;\n        }\n        return keys;\n    };\n    /**\n     * @return {Array<T>} Values.\n     */\n    LRUCache.prototype.getValues = function () {\n        var values = new Array(this.count_);\n        var i = 0;\n        var entry;\n        for (entry = this.newest_; entry; entry = entry.older) {\n            values[i++] = entry.value_;\n        }\n        return values;\n    };\n    /**\n     * @return {T} Last value.\n     */\n    LRUCache.prototype.peekLast = function () {\n        return this.oldest_.value_;\n    };\n    /**\n     * @return {string} Last key.\n     */\n    LRUCache.prototype.peekLastKey = function () {\n        return this.oldest_.key_;\n    };\n    /**\n     * Get the key of the newest item in the cache.  Throws if the cache is empty.\n     * @return {string} The newest key.\n     */\n    LRUCache.prototype.peekFirstKey = function () {\n        return this.newest_.key_;\n    };\n    /**\n     * @return {T} value Value.\n     */\n    LRUCache.prototype.pop = function () {\n        var entry = this.oldest_;\n        delete this.entries_[entry.key_];\n        if (entry.newer) {\n            entry.newer.older = null;\n        }\n        this.oldest_ = /** @type {Entry} */ (entry.newer);\n        if (!this.oldest_) {\n            this.newest_ = null;\n        }\n        --this.count_;\n        return entry.value_;\n    };\n    /**\n     * @param {string} key Key.\n     * @param {T} value Value.\n     */\n    LRUCache.prototype.replace = function (key, value) {\n        this.get(key); // update `newest_`\n        this.entries_[key].value_ = value;\n    };\n    /**\n     * @param {string} key Key.\n     * @param {T} value Value.\n     */\n    LRUCache.prototype.set = function (key, value) {\n        assert(!(key in this.entries_), 16); // Tried to set a value for a key that is used already\n        var entry = {\n            key_: key,\n            newer: null,\n            older: this.newest_,\n            value_: value\n        };\n        if (!this.newest_) {\n            this.oldest_ = entry;\n        }\n        else {\n            this.newest_.newer = entry;\n        }\n        this.newest_ = entry;\n        this.entries_[key] = entry;\n        ++this.count_;\n    };\n    /**\n     * Set a maximum number of entries for the cache.\n     * @param {number} size Cache size.\n     * @api\n     */\n    LRUCache.prototype.setSize = function (size) {\n        this.highWaterMark = size;\n    };\n    return LRUCache;\n}());\nexport default LRUCache;\n//# sourceMappingURL=LRUCache.js.map","/**\n * @module ol/tilecoord\n */\n/**\n * An array of three numbers representing the location of a tile in a tile\n * grid. The order is `z` (zoom level), `x` (column), and `y` (row).\n * @typedef {Array<number>} TileCoord\n * @api\n */\n/**\n * @param {number} z Z.\n * @param {number} x X.\n * @param {number} y Y.\n * @param {TileCoord=} opt_tileCoord Tile coordinate.\n * @return {TileCoord} Tile coordinate.\n */\nexport function createOrUpdate(z, x, y, opt_tileCoord) {\n    if (opt_tileCoord !== undefined) {\n        opt_tileCoord[0] = z;\n        opt_tileCoord[1] = x;\n        opt_tileCoord[2] = y;\n        return opt_tileCoord;\n    }\n    else {\n        return [z, x, y];\n    }\n}\n/**\n * @param {number} z Z.\n * @param {number} x X.\n * @param {number} y Y.\n * @return {string} Key.\n */\nexport function getKeyZXY(z, x, y) {\n    return z + '/' + x + '/' + y;\n}\n/**\n * Get the key for a tile coord.\n * @param {TileCoord} tileCoord The tile coord.\n * @return {string} Key.\n */\nexport function getKey(tileCoord) {\n    return getKeyZXY(tileCoord[0], tileCoord[1], tileCoord[2]);\n}\n/**\n * Get a tile coord given a key.\n * @param {string} key The tile coord key.\n * @return {TileCoord} The tile coord.\n */\nexport function fromKey(key) {\n    return key.split('/').map(Number);\n}\n/**\n * @param {TileCoord} tileCoord Tile coord.\n * @return {number} Hash.\n */\nexport function hash(tileCoord) {\n    return (tileCoord[1] << tileCoord[0]) + tileCoord[2];\n}\n/**\n * @param {TileCoord} tileCoord Tile coordinate.\n * @param {!import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {boolean} Tile coordinate is within extent and zoom level range.\n */\nexport function withinExtentAndZ(tileCoord, tileGrid) {\n    var z = tileCoord[0];\n    var x = tileCoord[1];\n    var y = tileCoord[2];\n    if (tileGrid.getMinZoom() > z || z > tileGrid.getMaxZoom()) {\n        return false;\n    }\n    var extent = tileGrid.getExtent();\n    var tileRange;\n    if (!extent) {\n        tileRange = tileGrid.getFullTileRange(z);\n    }\n    else {\n        tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);\n    }\n    if (!tileRange) {\n        return true;\n    }\n    else {\n        return tileRange.containsXY(x, y);\n    }\n}\n//# sourceMappingURL=tilecoord.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/TileCache\n */\nimport LRUCache from './structs/LRUCache.js';\nimport { fromKey, getKey } from './tilecoord.js';\nvar TileCache = /** @class */ (function (_super) {\n    __extends(TileCache, _super);\n    function TileCache() {\n        return _super !== null && _super.apply(this, arguments) || this;\n    }\n    /**\n     * @param {!Object<string, boolean>} usedTiles Used tiles.\n     */\n    TileCache.prototype.expireCache = function (usedTiles) {\n        while (this.canExpireCache()) {\n            var tile = this.peekLast();\n            if (tile.getKey() in usedTiles) {\n                break;\n            }\n            else {\n                this.pop().release();\n            }\n        }\n    };\n    /**\n     * Prune all tiles from the cache that don't have the same z as the newest tile.\n     */\n    TileCache.prototype.pruneExceptNewestZ = function () {\n        if (this.getCount() === 0) {\n            return;\n        }\n        var key = this.peekFirstKey();\n        var tileCoord = fromKey(key);\n        var z = tileCoord[0];\n        this.forEach(function (tile) {\n            if (tile.tileCoord[0] !== z) {\n                this.remove(getKey(tile.tileCoord));\n                tile.release();\n            }\n        }.bind(this));\n    };\n    return TileCache;\n}(LRUCache));\nexport default TileCache;\n//# sourceMappingURL=TileCache.js.map","/**\n * @module ol/reproj\n */\nimport { createCanvasContext2D } from './dom.js';\nimport { containsCoordinate, createEmpty, extend, getHeight, getTopLeft, getWidth } from './extent.js';\nimport { solveLinearSystem } from './math.js';\nimport { getPointResolution, transform } from './proj.js';\n/**\n * Calculates ideal resolution to use from the source in order to achieve\n * pixel mapping as close as possible to 1:1 during reprojection.\n * The resolution is calculated regardless of what resolutions\n * are actually available in the dataset (TileGrid, Image, ...).\n *\n * @param {import(\"./proj/Projection.js\").default} sourceProj Source projection.\n * @param {import(\"./proj/Projection.js\").default} targetProj Target projection.\n * @param {import(\"./coordinate.js\").Coordinate} targetCenter Target center.\n * @param {number} targetResolution Target resolution.\n * @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.\n */\nexport function calculateSourceResolution(sourceProj, targetProj, targetCenter, targetResolution) {\n    var sourceCenter = transform(targetCenter, targetProj, sourceProj);\n    // calculate the ideal resolution of the source data\n    var sourceResolution = getPointResolution(targetProj, targetResolution, targetCenter);\n    var targetMetersPerUnit = targetProj.getMetersPerUnit();\n    if (targetMetersPerUnit !== undefined) {\n        sourceResolution *= targetMetersPerUnit;\n    }\n    var sourceMetersPerUnit = sourceProj.getMetersPerUnit();\n    if (sourceMetersPerUnit !== undefined) {\n        sourceResolution /= sourceMetersPerUnit;\n    }\n    // Based on the projection properties, the point resolution at the specified\n    // coordinates may be slightly different. We need to reverse-compensate this\n    // in order to achieve optimal results.\n    var sourceExtent = sourceProj.getExtent();\n    if (!sourceExtent || containsCoordinate(sourceExtent, sourceCenter)) {\n        var compensationFactor = getPointResolution(sourceProj, sourceResolution, sourceCenter) /\n            sourceResolution;\n        if (isFinite(compensationFactor) && compensationFactor > 0) {\n            sourceResolution /= compensationFactor;\n        }\n    }\n    return sourceResolution;\n}\n/**\n * Enlarge the clipping triangle point by 1 pixel to ensure the edges overlap\n * in order to mask gaps caused by antialiasing.\n *\n * @param {number} centroidX Centroid of the triangle (x coordinate in pixels).\n * @param {number} centroidY Centroid of the triangle (y coordinate in pixels).\n * @param {number} x X coordinate of the point (in pixels).\n * @param {number} y Y coordinate of the point (in pixels).\n * @return {import(\"./coordinate.js\").Coordinate} New point 1 px farther from the centroid.\n */\nfunction enlargeClipPoint(centroidX, centroidY, x, y) {\n    var dX = x - centroidX;\n    var dY = y - centroidY;\n    var distance = Math.sqrt(dX * dX + dY * dY);\n    return [Math.round(x + dX / distance), Math.round(y + dY / distance)];\n}\n/**\n * Renders the source data into new canvas based on the triangulation.\n *\n * @param {number} width Width of the canvas.\n * @param {number} height Height of the canvas.\n * @param {number} pixelRatio Pixel ratio.\n * @param {number} sourceResolution Source resolution.\n * @param {import(\"./extent.js\").Extent} sourceExtent Extent of the data source.\n * @param {number} targetResolution Target resolution.\n * @param {import(\"./extent.js\").Extent} targetExtent Target extent.\n * @param {import(\"./reproj/Triangulation.js\").default} triangulation\n * Calculated triangulation.\n * @param {Array<{extent: import(\"./extent.js\").Extent,\n *                 image: (HTMLCanvasElement|HTMLImageElement|HTMLVideoElement)}>} sources\n * Array of sources.\n * @param {number} gutter Gutter of the sources.\n * @param {boolean=} opt_renderEdges Render reprojection edges.\n * @return {HTMLCanvasElement} Canvas with reprojected data.\n */\nexport function render(width, height, pixelRatio, sourceResolution, sourceExtent, targetResolution, targetExtent, triangulation, sources, gutter, opt_renderEdges) {\n    var context = createCanvasContext2D(Math.round(pixelRatio * width), Math.round(pixelRatio * height));\n    if (sources.length === 0) {\n        return context.canvas;\n    }\n    context.scale(pixelRatio, pixelRatio);\n    var sourceDataExtent = createEmpty();\n    sources.forEach(function (src, i, arr) {\n        extend(sourceDataExtent, src.extent);\n    });\n    var canvasWidthInUnits = getWidth(sourceDataExtent);\n    var canvasHeightInUnits = getHeight(sourceDataExtent);\n    var stitchContext = createCanvasContext2D(Math.round(pixelRatio * canvasWidthInUnits / sourceResolution), Math.round(pixelRatio * canvasHeightInUnits / sourceResolution));\n    var stitchScale = pixelRatio / sourceResolution;\n    sources.forEach(function (src, i, arr) {\n        var xPos = src.extent[0] - sourceDataExtent[0];\n        var yPos = -(src.extent[3] - sourceDataExtent[3]);\n        var srcWidth = getWidth(src.extent);\n        var srcHeight = getHeight(src.extent);\n        stitchContext.drawImage(src.image, gutter, gutter, src.image.width - 2 * gutter, src.image.height - 2 * gutter, xPos * stitchScale, yPos * stitchScale, srcWidth * stitchScale, srcHeight * stitchScale);\n    });\n    var targetTopLeft = getTopLeft(targetExtent);\n    triangulation.getTriangles().forEach(function (triangle, i, arr) {\n        /* Calculate affine transform (src -> dst)\n         * Resulting matrix can be used to transform coordinate\n         * from `sourceProjection` to destination pixels.\n         *\n         * To optimize number of context calls and increase numerical stability,\n         * we also do the following operations:\n         * trans(-topLeftExtentCorner), scale(1 / targetResolution), scale(1, -1)\n         * here before solving the linear system so [ui, vi] are pixel coordinates.\n         *\n         * Src points: xi, yi\n         * Dst points: ui, vi\n         * Affine coefficients: aij\n         *\n         * | x0 y0 1  0  0 0 |   |a00|   |u0|\n         * | x1 y1 1  0  0 0 |   |a01|   |u1|\n         * | x2 y2 1  0  0 0 | x |a02| = |u2|\n         * |  0  0 0 x0 y0 1 |   |a10|   |v0|\n         * |  0  0 0 x1 y1 1 |   |a11|   |v1|\n         * |  0  0 0 x2 y2 1 |   |a12|   |v2|\n         */\n        var source = triangle.source;\n        var target = triangle.target;\n        var x0 = source[0][0], y0 = source[0][1];\n        var x1 = source[1][0], y1 = source[1][1];\n        var x2 = source[2][0], y2 = source[2][1];\n        var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;\n        var v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;\n        var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;\n        var v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;\n        var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;\n        var v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;\n        // Shift all the source points to improve numerical stability\n        // of all the subsequent calculations. The [x0, y0] is used here.\n        // This is also used to simplify the linear system.\n        var sourceNumericalShiftX = x0;\n        var sourceNumericalShiftY = y0;\n        x0 = 0;\n        y0 = 0;\n        x1 -= sourceNumericalShiftX;\n        y1 -= sourceNumericalShiftY;\n        x2 -= sourceNumericalShiftX;\n        y2 -= sourceNumericalShiftY;\n        var augmentedMatrix = [\n            [x1, y1, 0, 0, u1 - u0],\n            [x2, y2, 0, 0, u2 - u0],\n            [0, 0, x1, y1, v1 - v0],\n            [0, 0, x2, y2, v2 - v0]\n        ];\n        var affineCoefs = solveLinearSystem(augmentedMatrix);\n        if (!affineCoefs) {\n            return;\n        }\n        context.save();\n        context.beginPath();\n        var centroidX = (u0 + u1 + u2) / 3;\n        var centroidY = (v0 + v1 + v2) / 3;\n        var p0 = enlargeClipPoint(centroidX, centroidY, u0, v0);\n        var p1 = enlargeClipPoint(centroidX, centroidY, u1, v1);\n        var p2 = enlargeClipPoint(centroidX, centroidY, u2, v2);\n        context.moveTo(p1[0], p1[1]);\n        context.lineTo(p0[0], p0[1]);\n        context.lineTo(p2[0], p2[1]);\n        context.clip();\n        context.transform(affineCoefs[0], affineCoefs[2], affineCoefs[1], affineCoefs[3], u0, v0);\n        context.translate(sourceDataExtent[0] - sourceNumericalShiftX, sourceDataExtent[3] - sourceNumericalShiftY);\n        context.scale(sourceResolution / pixelRatio, -sourceResolution / pixelRatio);\n        context.drawImage(stitchContext.canvas, 0, 0);\n        context.restore();\n    });\n    if (opt_renderEdges) {\n        context.save();\n        context.strokeStyle = 'black';\n        context.lineWidth = 1;\n        triangulation.getTriangles().forEach(function (triangle, i, arr) {\n            var target = triangle.target;\n            var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;\n            var v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;\n            var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;\n            var v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;\n            var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;\n            var v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;\n            context.beginPath();\n            context.moveTo(u1, v1);\n            context.lineTo(u0, v0);\n            context.lineTo(u2, v2);\n            context.closePath();\n            context.stroke();\n        });\n        context.restore();\n    }\n    return context.canvas;\n}\n//# sourceMappingURL=reproj.js.map","/**\n * @module ol/reproj/Triangulation\n */\nimport { boundingExtent, createEmpty, extendCoordinate, getArea, getBottomLeft, getBottomRight, getTopLeft, getTopRight, getWidth, intersects } from '../extent.js';\nimport { modulo } from '../math.js';\nimport { getTransform } from '../proj.js';\n/**\n * Single triangle; consists of 3 source points and 3 target points.\n * @typedef {Object} Triangle\n * @property {Array<import(\"../coordinate.js\").Coordinate>} source\n * @property {Array<import(\"../coordinate.js\").Coordinate>} target\n */\n/**\n * Maximum number of subdivision steps during raster reprojection triangulation.\n * Prevents high memory usage and large number of proj4 calls (for certain\n * transformations and areas). At most `2*(2^this)` triangles are created for\n * each triangulated extent (tile/image).\n * @type {number}\n */\nvar MAX_SUBDIVISION = 10;\n/**\n * Maximum allowed size of triangle relative to world width. When transforming\n * corners of world extent between certain projections, the resulting\n * triangulation seems to have zero error and no subdivision is performed. If\n * the triangle width is more than this (relative to world width; 0-1),\n * subdivison is forced (up to `MAX_SUBDIVISION`). Default is `0.25`.\n * @type {number}\n */\nvar MAX_TRIANGLE_WIDTH = 0.25;\n/**\n * @classdesc\n * Class containing triangulation of the given target extent.\n * Used for determining source data and the reprojection itself.\n */\nvar Triangulation = /** @class */ (function () {\n    /**\n     * @param {import(\"../proj/Projection.js\").default} sourceProj Source projection.\n     * @param {import(\"../proj/Projection.js\").default} targetProj Target projection.\n     * @param {import(\"../extent.js\").Extent} targetExtent Target extent to triangulate.\n     * @param {import(\"../extent.js\").Extent} maxSourceExtent Maximal source extent that can be used.\n     * @param {number} errorThreshold Acceptable error (in source units).\n     * @param {?number} opt_destinationResolution The (optional) resolution of the destination.\n     */\n    function Triangulation(sourceProj, targetProj, targetExtent, maxSourceExtent, errorThreshold, opt_destinationResolution) {\n        /**\n         * @type {import(\"../proj/Projection.js\").default}\n         * @private\n         */\n        this.sourceProj_ = sourceProj;\n        /**\n         * @type {import(\"../proj/Projection.js\").default}\n         * @private\n         */\n        this.targetProj_ = targetProj;\n        /** @type {!Object<string, import(\"../coordinate.js\").Coordinate>} */\n        var transformInvCache = {};\n        var transformInv = getTransform(this.targetProj_, this.sourceProj_);\n        /**\n         * @param {import(\"../coordinate.js\").Coordinate} c A coordinate.\n         * @return {import(\"../coordinate.js\").Coordinate} Transformed coordinate.\n         * @private\n         */\n        this.transformInv_ = function (c) {\n            var key = c[0] + '/' + c[1];\n            if (!transformInvCache[key]) {\n                transformInvCache[key] = transformInv(c);\n            }\n            return transformInvCache[key];\n        };\n        /**\n         * @type {import(\"../extent.js\").Extent}\n         * @private\n         */\n        this.maxSourceExtent_ = maxSourceExtent;\n        /**\n         * @type {number}\n         * @private\n         */\n        this.errorThresholdSquared_ = errorThreshold * errorThreshold;\n        /**\n         * @type {Array<Triangle>}\n         * @private\n         */\n        this.triangles_ = [];\n        /**\n         * Indicates that the triangulation crosses edge of the source projection.\n         * @type {boolean}\n         * @private\n         */\n        this.wrapsXInSource_ = false;\n        /**\n         * @type {boolean}\n         * @private\n         */\n        this.canWrapXInSource_ = this.sourceProj_.canWrapX() &&\n            !!maxSourceExtent &&\n            !!this.sourceProj_.getExtent() &&\n            (getWidth(maxSourceExtent) == getWidth(this.sourceProj_.getExtent()));\n        /**\n         * @type {?number}\n         * @private\n         */\n        this.sourceWorldWidth_ = this.sourceProj_.getExtent() ?\n            getWidth(this.sourceProj_.getExtent()) : null;\n        /**\n         * @type {?number}\n         * @private\n         */\n        this.targetWorldWidth_ = this.targetProj_.getExtent() ?\n            getWidth(this.targetProj_.getExtent()) : null;\n        var destinationTopLeft = getTopLeft(targetExtent);\n        var destinationTopRight = getTopRight(targetExtent);\n        var destinationBottomRight = getBottomRight(targetExtent);\n        var destinationBottomLeft = getBottomLeft(targetExtent);\n        var sourceTopLeft = this.transformInv_(destinationTopLeft);\n        var sourceTopRight = this.transformInv_(destinationTopRight);\n        var sourceBottomRight = this.transformInv_(destinationBottomRight);\n        var sourceBottomLeft = this.transformInv_(destinationBottomLeft);\n        /*\n         * The maxSubdivision controls how many splittings of the target area can\n         * be done. The idea here is to do a linear mapping of the target areas\n         * but the actual overal reprojection (can be) extremely non-linear. The\n         * default value of MAX_SUBDIVISION was chosen based on mapping a 256x256\n         * tile size. However this function is also called to remap canvas rendered\n         * layers which can be much larger. This calculation increases the maxSubdivision\n         * value by the right factor so that each 256x256 pixel area has\n         * MAX_SUBDIVISION divisions.\n         */\n        var maxSubdivision = MAX_SUBDIVISION + (opt_destinationResolution ?\n            Math.max(0, Math.ceil(Math.log2(getArea(targetExtent) /\n                (opt_destinationResolution * opt_destinationResolution * 256 * 256))))\n            : 0);\n        this.addQuad_(destinationTopLeft, destinationTopRight, destinationBottomRight, destinationBottomLeft, sourceTopLeft, sourceTopRight, sourceBottomRight, sourceBottomLeft, maxSubdivision);\n        if (this.wrapsXInSource_) {\n            var leftBound_1 = Infinity;\n            this.triangles_.forEach(function (triangle, i, arr) {\n                leftBound_1 = Math.min(leftBound_1, triangle.source[0][0], triangle.source[1][0], triangle.source[2][0]);\n            });\n            // Shift triangles to be as close to `leftBound` as possible\n            // (if the distance is more than `worldWidth / 2` it can be closer.\n            this.triangles_.forEach(function (triangle) {\n                if (Math.max(triangle.source[0][0], triangle.source[1][0], triangle.source[2][0]) - leftBound_1 > this.sourceWorldWidth_ / 2) {\n                    var newTriangle = [[triangle.source[0][0], triangle.source[0][1]],\n                        [triangle.source[1][0], triangle.source[1][1]],\n                        [triangle.source[2][0], triangle.source[2][1]]];\n                    if ((newTriangle[0][0] - leftBound_1) > this.sourceWorldWidth_ / 2) {\n                        newTriangle[0][0] -= this.sourceWorldWidth_;\n                    }\n                    if ((newTriangle[1][0] - leftBound_1) > this.sourceWorldWidth_ / 2) {\n                        newTriangle[1][0] -= this.sourceWorldWidth_;\n                    }\n                    if ((newTriangle[2][0] - leftBound_1) > this.sourceWorldWidth_ / 2) {\n                        newTriangle[2][0] -= this.sourceWorldWidth_;\n                    }\n                    // Rarely (if the extent contains both the dateline and prime meridian)\n                    // the shift can in turn break some triangles.\n                    // Detect this here and don't shift in such cases.\n                    var minX = Math.min(newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);\n                    var maxX = Math.max(newTriangle[0][0], newTriangle[1][0], newTriangle[2][0]);\n                    if ((maxX - minX) < this.sourceWorldWidth_ / 2) {\n                        triangle.source = newTriangle;\n                    }\n                }\n            }.bind(this));\n        }\n        transformInvCache = {};\n    }\n    /**\n     * Adds triangle to the triangulation.\n     * @param {import(\"../coordinate.js\").Coordinate} a The target a coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} b The target b coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} c The target c coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} aSrc The source a coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} bSrc The source b coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} cSrc The source c coordinate.\n     * @private\n     */\n    Triangulation.prototype.addTriangle_ = function (a, b, c, aSrc, bSrc, cSrc) {\n        this.triangles_.push({\n            source: [aSrc, bSrc, cSrc],\n            target: [a, b, c]\n        });\n    };\n    /**\n     * Adds quad (points in clock-wise order) to the triangulation\n     * (and reprojects the vertices) if valid.\n     * Performs quad subdivision if needed to increase precision.\n     *\n     * @param {import(\"../coordinate.js\").Coordinate} a The target a coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} b The target b coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} c The target c coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} d The target d coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} aSrc The source a coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} bSrc The source b coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} cSrc The source c coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} dSrc The source d coordinate.\n     * @param {number} maxSubdivision Maximal allowed subdivision of the quad.\n     * @private\n     */\n    Triangulation.prototype.addQuad_ = function (a, b, c, d, aSrc, bSrc, cSrc, dSrc, maxSubdivision) {\n        var sourceQuadExtent = boundingExtent([aSrc, bSrc, cSrc, dSrc]);\n        var sourceCoverageX = this.sourceWorldWidth_ ?\n            getWidth(sourceQuadExtent) / this.sourceWorldWidth_ : null;\n        var sourceWorldWidth = /** @type {number} */ (this.sourceWorldWidth_);\n        // when the quad is wrapped in the source projection\n        // it covers most of the projection extent, but not fully\n        var wrapsX = this.sourceProj_.canWrapX() &&\n            sourceCoverageX > 0.5 && sourceCoverageX < 1;\n        var needsSubdivision = false;\n        if (maxSubdivision > 0) {\n            if (this.targetProj_.isGlobal() && this.targetWorldWidth_) {\n                var targetQuadExtent = boundingExtent([a, b, c, d]);\n                var targetCoverageX = getWidth(targetQuadExtent) / this.targetWorldWidth_;\n                needsSubdivision = targetCoverageX > MAX_TRIANGLE_WIDTH ||\n                    needsSubdivision;\n            }\n            if (!wrapsX && this.sourceProj_.isGlobal() && sourceCoverageX) {\n                needsSubdivision = sourceCoverageX > MAX_TRIANGLE_WIDTH ||\n                    needsSubdivision;\n            }\n        }\n        if (!needsSubdivision && this.maxSourceExtent_) {\n            if (!intersects(sourceQuadExtent, this.maxSourceExtent_)) {\n                // whole quad outside source projection extent -> ignore\n                return;\n            }\n        }\n        if (!needsSubdivision) {\n            if (!isFinite(aSrc[0]) || !isFinite(aSrc[1]) ||\n                !isFinite(bSrc[0]) || !isFinite(bSrc[1]) ||\n                !isFinite(cSrc[0]) || !isFinite(cSrc[1]) ||\n                !isFinite(dSrc[0]) || !isFinite(dSrc[1])) {\n                if (maxSubdivision > 0) {\n                    needsSubdivision = true;\n                }\n                else {\n                    return;\n                }\n            }\n        }\n        if (maxSubdivision > 0) {\n            if (!needsSubdivision) {\n                var center = [(a[0] + c[0]) / 2, (a[1] + c[1]) / 2];\n                var centerSrc = this.transformInv_(center);\n                var dx = void 0;\n                if (wrapsX) {\n                    var centerSrcEstimX = (modulo(aSrc[0], sourceWorldWidth) +\n                        modulo(cSrc[0], sourceWorldWidth)) / 2;\n                    dx = centerSrcEstimX -\n                        modulo(centerSrc[0], sourceWorldWidth);\n                }\n                else {\n                    dx = (aSrc[0] + cSrc[0]) / 2 - centerSrc[0];\n                }\n                var dy = (aSrc[1] + cSrc[1]) / 2 - centerSrc[1];\n                var centerSrcErrorSquared = dx * dx + dy * dy;\n                needsSubdivision = centerSrcErrorSquared > this.errorThresholdSquared_;\n            }\n            if (needsSubdivision) {\n                if (Math.abs(a[0] - c[0]) <= Math.abs(a[1] - c[1])) {\n                    // split horizontally (top & bottom)\n                    var bc = [(b[0] + c[0]) / 2, (b[1] + c[1]) / 2];\n                    var bcSrc = this.transformInv_(bc);\n                    var da = [(d[0] + a[0]) / 2, (d[1] + a[1]) / 2];\n                    var daSrc = this.transformInv_(da);\n                    this.addQuad_(a, b, bc, da, aSrc, bSrc, bcSrc, daSrc, maxSubdivision - 1);\n                    this.addQuad_(da, bc, c, d, daSrc, bcSrc, cSrc, dSrc, maxSubdivision - 1);\n                }\n                else {\n                    // split vertically (left & right)\n                    var ab = [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2];\n                    var abSrc = this.transformInv_(ab);\n                    var cd = [(c[0] + d[0]) / 2, (c[1] + d[1]) / 2];\n                    var cdSrc = this.transformInv_(cd);\n                    this.addQuad_(a, ab, cd, d, aSrc, abSrc, cdSrc, dSrc, maxSubdivision - 1);\n                    this.addQuad_(ab, b, c, cd, abSrc, bSrc, cSrc, cdSrc, maxSubdivision - 1);\n                }\n                return;\n            }\n        }\n        if (wrapsX) {\n            if (!this.canWrapXInSource_) {\n                return;\n            }\n            this.wrapsXInSource_ = true;\n        }\n        this.addTriangle_(a, c, d, aSrc, cSrc, dSrc);\n        this.addTriangle_(a, b, c, aSrc, bSrc, cSrc);\n    };\n    /**\n     * Calculates extent of the 'source' coordinates from all the triangles.\n     *\n     * @return {import(\"../extent.js\").Extent} Calculated extent.\n     */\n    Triangulation.prototype.calculateSourceExtent = function () {\n        var extent = createEmpty();\n        this.triangles_.forEach(function (triangle, i, arr) {\n            var src = triangle.source;\n            extendCoordinate(extent, src[0]);\n            extendCoordinate(extent, src[1]);\n            extendCoordinate(extent, src[2]);\n        });\n        return extent;\n    };\n    /**\n     * @return {Array<Triangle>} Array of the calculated triangles.\n     */\n    Triangulation.prototype.getTriangles = function () {\n        return this.triangles_;\n    };\n    return Triangulation;\n}());\nexport default Triangulation;\n//# sourceMappingURL=Triangulation.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/reproj/Tile\n */\nimport { ERROR_THRESHOLD } from './common.js';\nimport Tile from '../Tile.js';\nimport TileState from '../TileState.js';\nimport { listen, unlistenByKey } from '../events.js';\nimport EventType from '../events/EventType.js';\nimport { getArea, getCenter, getIntersection } from '../extent.js';\nimport { clamp } from '../math.js';\nimport { calculateSourceResolution, render as renderReprojected } from '../reproj.js';\nimport Triangulation from './Triangulation.js';\n/**\n * @typedef {function(number, number, number, number) : import(\"../Tile.js\").default} FunctionType\n */\n/**\n * @classdesc\n * Class encapsulating single reprojected tile.\n * See {@link module:ol/source/TileImage~TileImage}.\n *\n */\nvar ReprojTile = /** @class */ (function (_super) {\n    __extends(ReprojTile, _super);\n    /**\n     * @param {import(\"../proj/Projection.js\").default} sourceProj Source projection.\n     * @param {import(\"../tilegrid/TileGrid.js\").default} sourceTileGrid Source tile grid.\n     * @param {import(\"../proj/Projection.js\").default} targetProj Target projection.\n     * @param {import(\"../tilegrid/TileGrid.js\").default} targetTileGrid Target tile grid.\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Coordinate of the tile.\n     * @param {import(\"../tilecoord.js\").TileCoord} wrappedTileCoord Coordinate of the tile wrapped in X.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {number} gutter Gutter of the source tiles.\n     * @param {FunctionType} getTileFunction\n     *     Function returning source tiles (z, x, y, pixelRatio).\n     * @param {number=} opt_errorThreshold Acceptable reprojection error (in px).\n     * @param {boolean=} opt_renderEdges Render reprojection edges.\n     */\n    function ReprojTile(sourceProj, sourceTileGrid, targetProj, targetTileGrid, tileCoord, wrappedTileCoord, pixelRatio, gutter, getTileFunction, opt_errorThreshold, opt_renderEdges) {\n        var _this = _super.call(this, tileCoord, TileState.IDLE) || this;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.renderEdges_ = opt_renderEdges !== undefined ? opt_renderEdges : false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.pixelRatio_ = pixelRatio;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.gutter_ = gutter;\n        /**\n         * @private\n         * @type {HTMLCanvasElement}\n         */\n        _this.canvas_ = null;\n        /**\n         * @private\n         * @type {import(\"../tilegrid/TileGrid.js\").default}\n         */\n        _this.sourceTileGrid_ = sourceTileGrid;\n        /**\n         * @private\n         * @type {import(\"../tilegrid/TileGrid.js\").default}\n         */\n        _this.targetTileGrid_ = targetTileGrid;\n        /**\n         * @private\n         * @type {import(\"../tilecoord.js\").TileCoord}\n         */\n        _this.wrappedTileCoord_ = wrappedTileCoord ? wrappedTileCoord : tileCoord;\n        /**\n         * @private\n         * @type {!Array<import(\"../Tile.js\").default>}\n         */\n        _this.sourceTiles_ = [];\n        /**\n         * @private\n         * @type {?Array<import(\"../events.js\").EventsKey>}\n         */\n        _this.sourcesListenerKeys_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.sourceZ_ = 0;\n        var targetExtent = targetTileGrid.getTileCoordExtent(_this.wrappedTileCoord_);\n        var maxTargetExtent = _this.targetTileGrid_.getExtent();\n        var maxSourceExtent = _this.sourceTileGrid_.getExtent();\n        var limitedTargetExtent = maxTargetExtent ?\n            getIntersection(targetExtent, maxTargetExtent) : targetExtent;\n        if (getArea(limitedTargetExtent) === 0) {\n            // Tile is completely outside range -> EMPTY\n            // TODO: is it actually correct that the source even creates the tile ?\n            _this.state = TileState.EMPTY;\n            return _this;\n        }\n        var sourceProjExtent = sourceProj.getExtent();\n        if (sourceProjExtent) {\n            if (!maxSourceExtent) {\n                maxSourceExtent = sourceProjExtent;\n            }\n            else {\n                maxSourceExtent = getIntersection(maxSourceExtent, sourceProjExtent);\n            }\n        }\n        var targetResolution = targetTileGrid.getResolution(_this.wrappedTileCoord_[0]);\n        var targetCenter = getCenter(limitedTargetExtent);\n        var sourceResolution = calculateSourceResolution(sourceProj, targetProj, targetCenter, targetResolution);\n        if (!isFinite(sourceResolution) || sourceResolution <= 0) {\n            // invalid sourceResolution -> EMPTY\n            // probably edges of the projections when no extent is defined\n            _this.state = TileState.EMPTY;\n            return _this;\n        }\n        var errorThresholdInPixels = opt_errorThreshold !== undefined ?\n            opt_errorThreshold : ERROR_THRESHOLD;\n        /**\n         * @private\n         * @type {!import(\"./Triangulation.js\").default}\n         */\n        _this.triangulation_ = new Triangulation(sourceProj, targetProj, limitedTargetExtent, maxSourceExtent, sourceResolution * errorThresholdInPixels, targetResolution);\n        if (_this.triangulation_.getTriangles().length === 0) {\n            // no valid triangles -> EMPTY\n            _this.state = TileState.EMPTY;\n            return _this;\n        }\n        _this.sourceZ_ = sourceTileGrid.getZForResolution(sourceResolution);\n        var sourceExtent = _this.triangulation_.calculateSourceExtent();\n        if (maxSourceExtent) {\n            if (sourceProj.canWrapX()) {\n                sourceExtent[1] = clamp(sourceExtent[1], maxSourceExtent[1], maxSourceExtent[3]);\n                sourceExtent[3] = clamp(sourceExtent[3], maxSourceExtent[1], maxSourceExtent[3]);\n            }\n            else {\n                sourceExtent = getIntersection(sourceExtent, maxSourceExtent);\n            }\n        }\n        if (!getArea(sourceExtent)) {\n            _this.state = TileState.EMPTY;\n        }\n        else {\n            var sourceRange = sourceTileGrid.getTileRangeForExtentAndZ(sourceExtent, _this.sourceZ_);\n            for (var srcX = sourceRange.minX; srcX <= sourceRange.maxX; srcX++) {\n                for (var srcY = sourceRange.minY; srcY <= sourceRange.maxY; srcY++) {\n                    var tile = getTileFunction(_this.sourceZ_, srcX, srcY, pixelRatio);\n                    if (tile) {\n                        _this.sourceTiles_.push(tile);\n                    }\n                }\n            }\n            if (_this.sourceTiles_.length === 0) {\n                _this.state = TileState.EMPTY;\n            }\n        }\n        return _this;\n    }\n    /**\n     * Get the HTML Canvas element for this tile.\n     * @return {HTMLCanvasElement} Canvas.\n     */\n    ReprojTile.prototype.getImage = function () {\n        return this.canvas_;\n    };\n    /**\n     * @private\n     */\n    ReprojTile.prototype.reproject_ = function () {\n        var sources = [];\n        this.sourceTiles_.forEach(function (tile, i, arr) {\n            if (tile && tile.getState() == TileState.LOADED) {\n                sources.push({\n                    extent: this.sourceTileGrid_.getTileCoordExtent(tile.tileCoord),\n                    image: tile.getImage()\n                });\n            }\n        }.bind(this));\n        this.sourceTiles_.length = 0;\n        if (sources.length === 0) {\n            this.state = TileState.ERROR;\n        }\n        else {\n            var z = this.wrappedTileCoord_[0];\n            var size = this.targetTileGrid_.getTileSize(z);\n            var width = typeof size === 'number' ? size : size[0];\n            var height = typeof size === 'number' ? size : size[1];\n            var targetResolution = this.targetTileGrid_.getResolution(z);\n            var sourceResolution = this.sourceTileGrid_.getResolution(this.sourceZ_);\n            var targetExtent = this.targetTileGrid_.getTileCoordExtent(this.wrappedTileCoord_);\n            this.canvas_ = renderReprojected(width, height, this.pixelRatio_, sourceResolution, this.sourceTileGrid_.getExtent(), targetResolution, targetExtent, this.triangulation_, sources, this.gutter_, this.renderEdges_);\n            this.state = TileState.LOADED;\n        }\n        this.changed();\n    };\n    /**\n     * @inheritDoc\n     */\n    ReprojTile.prototype.load = function () {\n        if (this.state == TileState.IDLE) {\n            this.state = TileState.LOADING;\n            this.changed();\n            var leftToLoad_1 = 0;\n            this.sourcesListenerKeys_ = [];\n            this.sourceTiles_.forEach(function (tile, i, arr) {\n                var state = tile.getState();\n                if (state == TileState.IDLE || state == TileState.LOADING) {\n                    leftToLoad_1++;\n                    var sourceListenKey_1 = listen(tile, EventType.CHANGE, function (e) {\n                        var state = tile.getState();\n                        if (state == TileState.LOADED ||\n                            state == TileState.ERROR ||\n                            state == TileState.EMPTY) {\n                            unlistenByKey(sourceListenKey_1);\n                            leftToLoad_1--;\n                            if (leftToLoad_1 === 0) {\n                                this.unlistenSources_();\n                                this.reproject_();\n                            }\n                        }\n                    }, this);\n                    this.sourcesListenerKeys_.push(sourceListenKey_1);\n                }\n            }.bind(this));\n            this.sourceTiles_.forEach(function (tile, i, arr) {\n                var state = tile.getState();\n                if (state == TileState.IDLE) {\n                    tile.load();\n                }\n            });\n            if (leftToLoad_1 === 0) {\n                setTimeout(this.reproject_.bind(this), 0);\n            }\n        }\n    };\n    /**\n     * @private\n     */\n    ReprojTile.prototype.unlistenSources_ = function () {\n        this.sourcesListenerKeys_.forEach(unlistenByKey);\n        this.sourcesListenerKeys_ = null;\n    };\n    return ReprojTile;\n}(Tile));\nexport default ReprojTile;\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/reproj/common\n */\n/**\n * Default maximum allowed threshold  (in pixels) for reprojection\n * triangulation.\n * @type {number}\n */\nexport var ERROR_THRESHOLD = 0.5;\n/**\n * Enable automatic reprojection of raster sources. Default is `true`.\n * TODO: decide if we want to expose this as a build flag or remove it\n * @type {boolean}\n */\nexport var ENABLE_RASTER_REPROJECTION = true;\n//# sourceMappingURL=common.js.map","/**\n * @module ol/tileurlfunction\n */\nimport { assert } from './asserts.js';\nimport { modulo } from './math.js';\nimport { hash as tileCoordHash } from './tilecoord.js';\n/**\n * @param {string} template Template.\n * @param {import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTemplate(template, tileGrid) {\n    var zRegEx = /\\{z\\}/g;\n    var xRegEx = /\\{x\\}/g;\n    var yRegEx = /\\{y\\}/g;\n    var dashYRegEx = /\\{-y\\}/g;\n    return (\n    /**\n     * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile Coordinate.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"./proj/Projection.js\").default} projection Projection.\n     * @return {string|undefined} Tile URL.\n     */\n    function (tileCoord, pixelRatio, projection) {\n        if (!tileCoord) {\n            return undefined;\n        }\n        else {\n            return template.replace(zRegEx, tileCoord[0].toString())\n                .replace(xRegEx, tileCoord[1].toString())\n                .replace(yRegEx, tileCoord[2].toString())\n                .replace(dashYRegEx, function () {\n                var z = tileCoord[0];\n                var range = tileGrid.getFullTileRange(z);\n                assert(range, 55); // The {-y} placeholder requires a tile grid with extent\n                var y = range.getHeight() - tileCoord[2] - 1;\n                return y.toString();\n            });\n        }\n    });\n}\n/**\n * @param {Array<string>} templates Templates.\n * @param {import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTemplates(templates, tileGrid) {\n    var len = templates.length;\n    var tileUrlFunctions = new Array(len);\n    for (var i = 0; i < len; ++i) {\n        tileUrlFunctions[i] = createFromTemplate(templates[i], tileGrid);\n    }\n    return createFromTileUrlFunctions(tileUrlFunctions);\n}\n/**\n * @param {Array<import(\"./Tile.js\").UrlFunction>} tileUrlFunctions Tile URL Functions.\n * @return {import(\"./Tile.js\").UrlFunction} Tile URL function.\n */\nexport function createFromTileUrlFunctions(tileUrlFunctions) {\n    if (tileUrlFunctions.length === 1) {\n        return tileUrlFunctions[0];\n    }\n    return (\n    /**\n     * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile Coordinate.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"./proj/Projection.js\").default} projection Projection.\n     * @return {string|undefined} Tile URL.\n     */\n    function (tileCoord, pixelRatio, projection) {\n        if (!tileCoord) {\n            return undefined;\n        }\n        else {\n            var h = tileCoordHash(tileCoord);\n            var index = modulo(h, tileUrlFunctions.length);\n            return tileUrlFunctions[index](tileCoord, pixelRatio, projection);\n        }\n    });\n}\n/**\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {number} pixelRatio Pixel ratio.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {string|undefined} Tile URL.\n */\nexport function nullTileUrlFunction(tileCoord, pixelRatio, projection) {\n    return undefined;\n}\n/**\n * @param {string} url URL.\n * @return {Array<string>} Array of urls.\n */\nexport function expandUrl(url) {\n    var urls = [];\n    var match = /\\{([a-z])-([a-z])\\}/.exec(url);\n    if (match) {\n        // char range\n        var startCharCode = match[1].charCodeAt(0);\n        var stopCharCode = match[2].charCodeAt(0);\n        var charCode = void 0;\n        for (charCode = startCharCode; charCode <= stopCharCode; ++charCode) {\n            urls.push(url.replace(match[0], String.fromCharCode(charCode)));\n        }\n        return urls;\n    }\n    match = /\\{(\\d+)-(\\d+)\\}/.exec(url);\n    if (match) {\n        // number range\n        var stop_1 = parseInt(match[2], 10);\n        for (var i = parseInt(match[1], 10); i <= stop_1; i++) {\n            urls.push(url.replace(match[0], i.toString()));\n        }\n        return urls;\n    }\n    urls.push(url);\n    return urls;\n}\n//# sourceMappingURL=tileurlfunction.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/source/Source\n */\nimport { abstract } from '../util.js';\nimport BaseObject from '../Object.js';\nimport { get as getProjection } from '../proj.js';\nimport SourceState from './State.js';\n/**\n * A function that returns a string or an array of strings representing source\n * attributions.\n *\n * @typedef {function(import(\"../PluggableMap.js\").FrameState): (string|Array<string>)} Attribution\n */\n/**\n * A type that can be used to provide attribution information for data sources.\n *\n * It represents either\n * * a simple string (e.g. `'© Acme Inc.'`)\n * * an array of simple strings (e.g. `['© Acme Inc.', '© Bacme Inc.']`)\n * * a function that returns a string or array of strings ({@link module:ol/source/Source~Attribution})\n *\n * @typedef {string|Array<string>|Attribution} AttributionLike\n */\n/**\n * @typedef {Object} Options\n * @property {AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {import(\"../proj.js\").ProjectionLike} [projection] Projection. Default is the view projection.\n * @property {SourceState} [state='ready']\n * @property {boolean} [wrapX=false]\n */\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for {@link module:ol/layer/Layer~Layer} sources.\n *\n * A generic `change` event is triggered when the state of the source changes.\n * @abstract\n * @api\n */\nvar Source = /** @class */ (function (_super) {\n    __extends(Source, _super);\n    /**\n     * @param {Options} options Source options.\n     */\n    function Source(options) {\n        var _this = _super.call(this) || this;\n        /**\n         * @private\n         * @type {import(\"../proj/Projection.js\").default}\n         */\n        _this.projection_ = getProjection(options.projection);\n        /**\n         * @private\n         * @type {?Attribution}\n         */\n        _this.attributions_ = adaptAttributions(options.attributions);\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.attributionsCollapsible_ = options.attributionsCollapsible !== undefined ?\n            options.attributionsCollapsible : true;\n        /**\n         * This source is currently loading data. Sources that defer loading to the\n         * map's tile queue never set this to `true`.\n         * @type {boolean}\n         */\n        _this.loading = false;\n        /**\n         * @private\n         * @type {SourceState}\n         */\n        _this.state_ = options.state !== undefined ?\n            options.state : SourceState.READY;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.wrapX_ = options.wrapX !== undefined ? options.wrapX : false;\n        return _this;\n    }\n    /**\n     * Get the attribution function for the source.\n     * @return {?Attribution} Attribution function.\n     */\n    Source.prototype.getAttributions = function () {\n        return this.attributions_;\n    };\n    /**\n     * @return {boolean} Attributions are collapsible.\n     */\n    Source.prototype.getAttributionsCollapsible = function () {\n        return this.attributionsCollapsible_;\n    };\n    /**\n     * Get the projection of the source.\n     * @return {import(\"../proj/Projection.js\").default} Projection.\n     * @api\n     */\n    Source.prototype.getProjection = function () {\n        return this.projection_;\n    };\n    /**\n     * @abstract\n     * @return {Array<number>|undefined} Resolutions.\n     */\n    Source.prototype.getResolutions = function () {\n        return abstract();\n    };\n    /**\n     * Get the state of the source, see {@link module:ol/source/State~State} for possible states.\n     * @return {SourceState} State.\n     * @api\n     */\n    Source.prototype.getState = function () {\n        return this.state_;\n    };\n    /**\n     * @return {boolean|undefined} Wrap X.\n     */\n    Source.prototype.getWrapX = function () {\n        return this.wrapX_;\n    };\n    /**\n     * Refreshes the source. The source will be cleared, and data from the server will be reloaded.\n     * @api\n     */\n    Source.prototype.refresh = function () {\n        this.changed();\n    };\n    /**\n     * Set the attributions of the source.\n     * @param {AttributionLike|undefined} attributions Attributions.\n     *     Can be passed as `string`, `Array<string>`, {@link module:ol/source/Source~Attribution},\n     *     or `undefined`.\n     * @api\n     */\n    Source.prototype.setAttributions = function (attributions) {\n        this.attributions_ = adaptAttributions(attributions);\n        this.changed();\n    };\n    /**\n     * Set the state of the source.\n     * @param {SourceState} state State.\n     * @protected\n     */\n    Source.prototype.setState = function (state) {\n        this.state_ = state;\n        this.changed();\n    };\n    return Source;\n}(BaseObject));\n/**\n * Turns the attributions option into an attributions function.\n * @param {AttributionLike|undefined} attributionLike The attribution option.\n * @return {?Attribution} An attribution function (or null).\n */\nfunction adaptAttributions(attributionLike) {\n    if (!attributionLike) {\n        return null;\n    }\n    if (Array.isArray(attributionLike)) {\n        return function (frameState) {\n            return attributionLike;\n        };\n    }\n    if (typeof attributionLike === 'function') {\n        return attributionLike;\n    }\n    return function (frameState) {\n        return [attributionLike];\n    };\n}\nexport default Source;\n//# sourceMappingURL=Source.js.map","/**\n * @module ol/TileRange\n */\n/**\n * A representation of a contiguous block of tiles.  A tile range is specified\n * by its min/max tile coordinates and is inclusive of coordinates.\n */\nvar TileRange = /** @class */ (function () {\n    /**\n     * @param {number} minX Minimum X.\n     * @param {number} maxX Maximum X.\n     * @param {number} minY Minimum Y.\n     * @param {number} maxY Maximum Y.\n     */\n    function TileRange(minX, maxX, minY, maxY) {\n        /**\n         * @type {number}\n         */\n        this.minX = minX;\n        /**\n         * @type {number}\n         */\n        this.maxX = maxX;\n        /**\n         * @type {number}\n         */\n        this.minY = minY;\n        /**\n         * @type {number}\n         */\n        this.maxY = maxY;\n    }\n    /**\n     * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @return {boolean} Contains tile coordinate.\n     */\n    TileRange.prototype.contains = function (tileCoord) {\n        return this.containsXY(tileCoord[1], tileCoord[2]);\n    };\n    /**\n     * @param {TileRange} tileRange Tile range.\n     * @return {boolean} Contains.\n     */\n    TileRange.prototype.containsTileRange = function (tileRange) {\n        return this.minX <= tileRange.minX && tileRange.maxX <= this.maxX &&\n            this.minY <= tileRange.minY && tileRange.maxY <= this.maxY;\n    };\n    /**\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @return {boolean} Contains coordinate.\n     */\n    TileRange.prototype.containsXY = function (x, y) {\n        return this.minX <= x && x <= this.maxX && this.minY <= y && y <= this.maxY;\n    };\n    /**\n     * @param {TileRange} tileRange Tile range.\n     * @return {boolean} Equals.\n     */\n    TileRange.prototype.equals = function (tileRange) {\n        return this.minX == tileRange.minX && this.minY == tileRange.minY &&\n            this.maxX == tileRange.maxX && this.maxY == tileRange.maxY;\n    };\n    /**\n     * @param {TileRange} tileRange Tile range.\n     */\n    TileRange.prototype.extend = function (tileRange) {\n        if (tileRange.minX < this.minX) {\n            this.minX = tileRange.minX;\n        }\n        if (tileRange.maxX > this.maxX) {\n            this.maxX = tileRange.maxX;\n        }\n        if (tileRange.minY < this.minY) {\n            this.minY = tileRange.minY;\n        }\n        if (tileRange.maxY > this.maxY) {\n            this.maxY = tileRange.maxY;\n        }\n    };\n    /**\n     * @return {number} Height.\n     */\n    TileRange.prototype.getHeight = function () {\n        return this.maxY - this.minY + 1;\n    };\n    /**\n     * @return {import(\"./size.js\").Size} Size.\n     */\n    TileRange.prototype.getSize = function () {\n        return [this.getWidth(), this.getHeight()];\n    };\n    /**\n     * @return {number} Width.\n     */\n    TileRange.prototype.getWidth = function () {\n        return this.maxX - this.minX + 1;\n    };\n    /**\n     * @param {TileRange} tileRange Tile range.\n     * @return {boolean} Intersects.\n     */\n    TileRange.prototype.intersects = function (tileRange) {\n        return this.minX <= tileRange.maxX &&\n            this.maxX >= tileRange.minX &&\n            this.minY <= tileRange.maxY &&\n            this.maxY >= tileRange.minY;\n    };\n    return TileRange;\n}());\n/**\n * @param {number} minX Minimum X.\n * @param {number} maxX Maximum X.\n * @param {number} minY Minimum Y.\n * @param {number} maxY Maximum Y.\n * @param {TileRange=} tileRange TileRange.\n * @return {TileRange} Tile range.\n */\nexport function createOrUpdate(minX, maxX, minY, maxY, tileRange) {\n    if (tileRange !== undefined) {\n        tileRange.minX = minX;\n        tileRange.maxX = maxX;\n        tileRange.minY = minY;\n        tileRange.maxY = maxY;\n        return tileRange;\n    }\n    else {\n        return new TileRange(minX, maxX, minY, maxY);\n    }\n}\nexport default TileRange;\n//# sourceMappingURL=TileRange.js.map","/**\n * @module ol/tilegrid/TileGrid\n */\nimport { DEFAULT_TILE_SIZE } from './common.js';\nimport { assert } from '../asserts.js';\nimport TileRange, { createOrUpdate as createOrUpdateTileRange } from '../TileRange.js';\nimport { isSorted, linearFindNearest } from '../array.js';\nimport { createOrUpdate, getTopLeft } from '../extent.js';\nimport { clamp } from '../math.js';\nimport { toSize } from '../size.js';\nimport { createOrUpdate as createOrUpdateTileCoord } from '../tilecoord.js';\n/**\n * @private\n * @type {import(\"../tilecoord.js\").TileCoord}\n */\nvar tmpTileCoord = [0, 0, 0];\n/**\n * @typedef {Object} Options\n * @property {import(\"../extent.js\").Extent} [extent] Extent for the tile grid. No tiles outside this\n * extent will be requested by {@link module:ol/source/Tile} sources. When no `origin` or\n * `origins` are configured, the `origin` will be set to the top-left corner of the extent.\n * @property {number} [minZoom=0] Minimum zoom.\n * @property {import(\"../coordinate.js\").Coordinate} [origin] The tile grid origin, i.e. where the `x`\n * and `y` axes meet (`[z, 0, 0]`). Tile coordinates increase left to right and downwards. If not\n * specified, `extent` or `origins` must be provided.\n * @property {Array<import(\"../coordinate.js\").Coordinate>} [origins] Tile grid origins, i.e. where\n * the `x` and `y` axes meet (`[z, 0, 0]`), for each zoom level. If given, the array length\n * should match the length of the `resolutions` array, i.e. each resolution can have a different\n * origin. Tile coordinates increase left to right and downwards. If not specified, `extent` or\n * `origin` must be provided.\n * @property {!Array<number>} resolutions Resolutions. The array index of each resolution needs\n * to match the zoom level. This means that even if a `minZoom` is configured, the resolutions\n * array will have a length of `maxZoom + 1`.\n * @property {Array<import(\"../size.js\").Size>} [sizes] Number of tile rows and columns\n * of the grid for each zoom level. If specified the values\n * define each zoom level's extent together with the `origin` or `origins`.\n * A grid `extent` can be configured in addition, and will further limit the extent\n * for which tile requests are made by sources. If the bottom-left corner of\n * an extent is used as `origin` or `origins`, then the `y` value must be\n * negative because OpenLayers tile coordinates use the top left as the origin.\n * @property {number|import(\"../size.js\").Size} [tileSize] Tile size.\n * Default is `[256, 256]`.\n * @property {Array<import(\"../size.js\").Size>} [tileSizes] Tile sizes. If given, the array length\n * should match the length of the `resolutions` array, i.e. each resolution can have a different\n * tile size.\n */\n/**\n * @classdesc\n * Base class for setting the grid pattern for sources accessing tiled-image\n * servers.\n * @api\n */\nvar TileGrid = /** @class */ (function () {\n    /**\n     * @param {Options} options Tile grid options.\n     */\n    function TileGrid(options) {\n        /**\n         * @protected\n         * @type {number}\n         */\n        this.minZoom = options.minZoom !== undefined ? options.minZoom : 0;\n        /**\n         * @private\n         * @type {!Array<number>}\n         */\n        this.resolutions_ = options.resolutions;\n        assert(isSorted(this.resolutions_, function (a, b) {\n            return b - a;\n        }, true), 17); // `resolutions` must be sorted in descending order\n        // check if we've got a consistent zoom factor and origin\n        var zoomFactor;\n        if (!options.origins) {\n            for (var i = 0, ii = this.resolutions_.length - 1; i < ii; ++i) {\n                if (!zoomFactor) {\n                    zoomFactor = this.resolutions_[i] / this.resolutions_[i + 1];\n                }\n                else {\n                    if (this.resolutions_[i] / this.resolutions_[i + 1] !== zoomFactor) {\n                        zoomFactor = undefined;\n                        break;\n                    }\n                }\n            }\n        }\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.zoomFactor_ = zoomFactor;\n        /**\n         * @protected\n         * @type {number}\n         */\n        this.maxZoom = this.resolutions_.length - 1;\n        /**\n         * @private\n         * @type {import(\"../coordinate.js\").Coordinate}\n         */\n        this.origin_ = options.origin !== undefined ? options.origin : null;\n        /**\n         * @private\n         * @type {Array<import(\"../coordinate.js\").Coordinate>}\n         */\n        this.origins_ = null;\n        if (options.origins !== undefined) {\n            this.origins_ = options.origins;\n            assert(this.origins_.length == this.resolutions_.length, 20); // Number of `origins` and `resolutions` must be equal\n        }\n        var extent = options.extent;\n        if (extent !== undefined &&\n            !this.origin_ && !this.origins_) {\n            this.origin_ = getTopLeft(extent);\n        }\n        assert((!this.origin_ && this.origins_) || (this.origin_ && !this.origins_), 18); // Either `origin` or `origins` must be configured, never both\n        /**\n         * @private\n         * @type {Array<number|import(\"../size.js\").Size>}\n         */\n        this.tileSizes_ = null;\n        if (options.tileSizes !== undefined) {\n            this.tileSizes_ = options.tileSizes;\n            assert(this.tileSizes_.length == this.resolutions_.length, 19); // Number of `tileSizes` and `resolutions` must be equal\n        }\n        /**\n         * @private\n         * @type {number|import(\"../size.js\").Size}\n         */\n        this.tileSize_ = options.tileSize !== undefined ?\n            options.tileSize :\n            !this.tileSizes_ ? DEFAULT_TILE_SIZE : null;\n        assert((!this.tileSize_ && this.tileSizes_) ||\n            (this.tileSize_ && !this.tileSizes_), 22); // Either `tileSize` or `tileSizes` must be configured, never both\n        /**\n         * @private\n         * @type {import(\"../extent.js\").Extent}\n         */\n        this.extent_ = extent !== undefined ? extent : null;\n        /**\n         * @private\n         * @type {Array<import(\"../TileRange.js\").default>}\n         */\n        this.fullTileRanges_ = null;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        this.tmpSize_ = [0, 0];\n        if (options.sizes !== undefined) {\n            this.fullTileRanges_ = options.sizes.map(function (size, z) {\n                var tileRange = new TileRange(Math.min(0, size[0]), Math.max(size[0] - 1, -1), Math.min(0, size[1]), Math.max(size[1] - 1, -1));\n                return tileRange;\n            }, this);\n        }\n        else if (extent) {\n            this.calculateTileRanges_(extent);\n        }\n    }\n    /**\n     * Call a function with each tile coordinate for a given extent and zoom level.\n     *\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {number} zoom Integer zoom level.\n     * @param {function(import(\"../tilecoord.js\").TileCoord): void} callback Function called with each tile coordinate.\n     * @api\n     */\n    TileGrid.prototype.forEachTileCoord = function (extent, zoom, callback) {\n        var tileRange = this.getTileRangeForExtentAndZ(extent, zoom);\n        for (var i = tileRange.minX, ii = tileRange.maxX; i <= ii; ++i) {\n            for (var j = tileRange.minY, jj = tileRange.maxY; j <= jj; ++j) {\n                callback([zoom, i, j]);\n            }\n        }\n    };\n    /**\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {function(number, import(\"../TileRange.js\").default): boolean} callback Callback.\n     * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary import(\"../TileRange.js\").default object.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n     * @return {boolean} Callback succeeded.\n     */\n    TileGrid.prototype.forEachTileCoordParentTileRange = function (tileCoord, callback, opt_tileRange, opt_extent) {\n        var tileRange, x, y;\n        var tileCoordExtent = null;\n        var z = tileCoord[0] - 1;\n        if (this.zoomFactor_ === 2) {\n            x = tileCoord[1];\n            y = tileCoord[2];\n        }\n        else {\n            tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);\n        }\n        while (z >= this.minZoom) {\n            if (this.zoomFactor_ === 2) {\n                x = Math.floor(x / 2);\n                y = Math.floor(y / 2);\n                tileRange = createOrUpdateTileRange(x, x, y, y, opt_tileRange);\n            }\n            else {\n                tileRange = this.getTileRangeForExtentAndZ(tileCoordExtent, z, opt_tileRange);\n            }\n            if (callback(z, tileRange)) {\n                return true;\n            }\n            --z;\n        }\n        return false;\n    };\n    /**\n     * Get the extent for this tile grid, if it was configured.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     * @api\n     */\n    TileGrid.prototype.getExtent = function () {\n        return this.extent_;\n    };\n    /**\n     * Get the maximum zoom level for the grid.\n     * @return {number} Max zoom.\n     * @api\n     */\n    TileGrid.prototype.getMaxZoom = function () {\n        return this.maxZoom;\n    };\n    /**\n     * Get the minimum zoom level for the grid.\n     * @return {number} Min zoom.\n     * @api\n     */\n    TileGrid.prototype.getMinZoom = function () {\n        return this.minZoom;\n    };\n    /**\n     * Get the origin for the grid at the given zoom level.\n     * @param {number} z Integer zoom level.\n     * @return {import(\"../coordinate.js\").Coordinate} Origin.\n     * @api\n     */\n    TileGrid.prototype.getOrigin = function (z) {\n        if (this.origin_) {\n            return this.origin_;\n        }\n        else {\n            return this.origins_[z];\n        }\n    };\n    /**\n     * Get the resolution for the given zoom level.\n     * @param {number} z Integer zoom level.\n     * @return {number} Resolution.\n     * @api\n     */\n    TileGrid.prototype.getResolution = function (z) {\n        return this.resolutions_[z];\n    };\n    /**\n     * Get the list of resolutions for the tile grid.\n     * @return {Array<number>} Resolutions.\n     * @api\n     */\n    TileGrid.prototype.getResolutions = function () {\n        return this.resolutions_;\n    };\n    /**\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary import(\"../TileRange.js\").default object.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n     * @return {import(\"../TileRange.js\").default} Tile range.\n     */\n    TileGrid.prototype.getTileCoordChildTileRange = function (tileCoord, opt_tileRange, opt_extent) {\n        if (tileCoord[0] < this.maxZoom) {\n            if (this.zoomFactor_ === 2) {\n                var minX = tileCoord[1] * 2;\n                var minY = tileCoord[2] * 2;\n                return createOrUpdateTileRange(minX, minX + 1, minY, minY + 1, opt_tileRange);\n            }\n            var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);\n            return this.getTileRangeForExtentAndZ(tileCoordExtent, tileCoord[0] + 1, opt_tileRange);\n        }\n        return null;\n    };\n    /**\n     * Get the extent for a tile range.\n     * @param {number} z Integer zoom level.\n     * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Temporary import(\"../extent.js\").Extent object.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     */\n    TileGrid.prototype.getTileRangeExtent = function (z, tileRange, opt_extent) {\n        var origin = this.getOrigin(z);\n        var resolution = this.getResolution(z);\n        var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n        var minX = origin[0] + tileRange.minX * tileSize[0] * resolution;\n        var maxX = origin[0] + (tileRange.maxX + 1) * tileSize[0] * resolution;\n        var minY = origin[1] + tileRange.minY * tileSize[1] * resolution;\n        var maxY = origin[1] + (tileRange.maxY + 1) * tileSize[1] * resolution;\n        return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n    };\n    /**\n     * Get a tile range for the given extent and integer zoom level.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {number} z Integer zoom level.\n     * @param {import(\"../TileRange.js\").default=} opt_tileRange Temporary tile range object.\n     * @return {import(\"../TileRange.js\").default} Tile range.\n     */\n    TileGrid.prototype.getTileRangeForExtentAndZ = function (extent, z, opt_tileRange) {\n        var tileCoord = tmpTileCoord;\n        this.getTileCoordForXYAndZ_(extent[0], extent[3], z, false, tileCoord);\n        var minX = tileCoord[1];\n        var minY = tileCoord[2];\n        this.getTileCoordForXYAndZ_(extent[2], extent[1], z, true, tileCoord);\n        return createOrUpdateTileRange(minX, tileCoord[1], minY, tileCoord[2], opt_tileRange);\n    };\n    /**\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @return {import(\"../coordinate.js\").Coordinate} Tile center.\n     */\n    TileGrid.prototype.getTileCoordCenter = function (tileCoord) {\n        var origin = this.getOrigin(tileCoord[0]);\n        var resolution = this.getResolution(tileCoord[0]);\n        var tileSize = toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);\n        return [\n            origin[0] + (tileCoord[1] + 0.5) * tileSize[0] * resolution,\n            origin[1] - (tileCoord[2] + 0.5) * tileSize[1] * resolution\n        ];\n    };\n    /**\n     * Get the extent of a tile coordinate.\n     *\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Temporary extent object.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     * @api\n     */\n    TileGrid.prototype.getTileCoordExtent = function (tileCoord, opt_extent) {\n        var origin = this.getOrigin(tileCoord[0]);\n        var resolution = this.getResolution(tileCoord[0]);\n        var tileSize = toSize(this.getTileSize(tileCoord[0]), this.tmpSize_);\n        var minX = origin[0] + tileCoord[1] * tileSize[0] * resolution;\n        var minY = origin[1] - (tileCoord[2] + 1) * tileSize[1] * resolution;\n        var maxX = minX + tileSize[0] * resolution;\n        var maxY = minY + tileSize[1] * resolution;\n        return createOrUpdate(minX, minY, maxX, maxY, opt_extent);\n    };\n    /**\n     * Get the tile coordinate for the given map coordinate and resolution.  This\n     * method considers that coordinates that intersect tile boundaries should be\n     * assigned the higher tile coordinate.\n     *\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {number} resolution Resolution.\n     * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Destination import(\"../tilecoord.js\").TileCoord object.\n     * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n     * @api\n     */\n    TileGrid.prototype.getTileCoordForCoordAndResolution = function (coordinate, resolution, opt_tileCoord) {\n        return this.getTileCoordForXYAndResolution_(coordinate[0], coordinate[1], resolution, false, opt_tileCoord);\n    };\n    /**\n     * Note that this method should not be called for resolutions that correspond\n     * to an integer zoom level.  Instead call the `getTileCoordForXYAndZ_` method.\n     * @param {number} x X.\n     * @param {number} y Y.\n     * @param {number} resolution Resolution (for a non-integer zoom level).\n     * @param {boolean} reverseIntersectionPolicy Instead of letting edge\n     *     intersections go to the higher tile coordinate, let edge intersections\n     *     go to the lower tile coordinate.\n     * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Temporary import(\"../tilecoord.js\").TileCoord object.\n     * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n     * @private\n     */\n    TileGrid.prototype.getTileCoordForXYAndResolution_ = function (x, y, resolution, reverseIntersectionPolicy, opt_tileCoord) {\n        var z = this.getZForResolution(resolution);\n        var scale = resolution / this.getResolution(z);\n        var origin = this.getOrigin(z);\n        var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n        var adjustX = reverseIntersectionPolicy ? 0.5 : 0;\n        var adjustY = reverseIntersectionPolicy ? 0.5 : 0;\n        var xFromOrigin = Math.floor((x - origin[0]) / resolution + adjustX);\n        var yFromOrigin = Math.floor((origin[1] - y) / resolution + adjustY);\n        var tileCoordX = scale * xFromOrigin / tileSize[0];\n        var tileCoordY = scale * yFromOrigin / tileSize[1];\n        if (reverseIntersectionPolicy) {\n            tileCoordX = Math.ceil(tileCoordX) - 1;\n            tileCoordY = Math.ceil(tileCoordY) - 1;\n        }\n        else {\n            tileCoordX = Math.floor(tileCoordX);\n            tileCoordY = Math.floor(tileCoordY);\n        }\n        return createOrUpdateTileCoord(z, tileCoordX, tileCoordY, opt_tileCoord);\n    };\n    /**\n     * Although there is repetition between this method and `getTileCoordForXYAndResolution_`,\n     * they should have separate implementations.  This method is for integer zoom\n     * levels.  The other method should only be called for resolutions corresponding\n     * to non-integer zoom levels.\n     * @param {number} x Map x coordinate.\n     * @param {number} y Map y coordinate.\n     * @param {number} z Integer zoom level.\n     * @param {boolean} reverseIntersectionPolicy Instead of letting edge\n     *     intersections go to the higher tile coordinate, let edge intersections\n     *     go to the lower tile coordinate.\n     * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Temporary import(\"../tilecoord.js\").TileCoord object.\n     * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n     * @private\n     */\n    TileGrid.prototype.getTileCoordForXYAndZ_ = function (x, y, z, reverseIntersectionPolicy, opt_tileCoord) {\n        var origin = this.getOrigin(z);\n        var resolution = this.getResolution(z);\n        var tileSize = toSize(this.getTileSize(z), this.tmpSize_);\n        var adjustX = reverseIntersectionPolicy ? 0.5 : 0;\n        var adjustY = reverseIntersectionPolicy ? 0.5 : 0;\n        var xFromOrigin = Math.floor((x - origin[0]) / resolution + adjustX);\n        var yFromOrigin = Math.floor((origin[1] - y) / resolution + adjustY);\n        var tileCoordX = xFromOrigin / tileSize[0];\n        var tileCoordY = yFromOrigin / tileSize[1];\n        if (reverseIntersectionPolicy) {\n            tileCoordX = Math.ceil(tileCoordX) - 1;\n            tileCoordY = Math.ceil(tileCoordY) - 1;\n        }\n        else {\n            tileCoordX = Math.floor(tileCoordX);\n            tileCoordY = Math.floor(tileCoordY);\n        }\n        return createOrUpdateTileCoord(z, tileCoordX, tileCoordY, opt_tileCoord);\n    };\n    /**\n     * Get a tile coordinate given a map coordinate and zoom level.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {number} z Zoom level.\n     * @param {import(\"../tilecoord.js\").TileCoord=} opt_tileCoord Destination import(\"../tilecoord.js\").TileCoord object.\n     * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate.\n     * @api\n     */\n    TileGrid.prototype.getTileCoordForCoordAndZ = function (coordinate, z, opt_tileCoord) {\n        return this.getTileCoordForXYAndZ_(coordinate[0], coordinate[1], z, false, opt_tileCoord);\n    };\n    /**\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @return {number} Tile resolution.\n     */\n    TileGrid.prototype.getTileCoordResolution = function (tileCoord) {\n        return this.resolutions_[tileCoord[0]];\n    };\n    /**\n     * Get the tile size for a zoom level. The type of the return value matches the\n     * `tileSize` or `tileSizes` that the tile grid was configured with. To always\n     * get an `import(\"../size.js\").Size`, run the result through `import(\"../size.js\").Size.toSize()`.\n     * @param {number} z Z.\n     * @return {number|import(\"../size.js\").Size} Tile size.\n     * @api\n     */\n    TileGrid.prototype.getTileSize = function (z) {\n        if (this.tileSize_) {\n            return this.tileSize_;\n        }\n        else {\n            return this.tileSizes_[z];\n        }\n    };\n    /**\n     * @param {number} z Zoom level.\n     * @return {import(\"../TileRange.js\").default} Extent tile range for the specified zoom level.\n     */\n    TileGrid.prototype.getFullTileRange = function (z) {\n        if (!this.fullTileRanges_) {\n            return null;\n        }\n        else {\n            return this.fullTileRanges_[z];\n        }\n    };\n    /**\n     * @param {number} resolution Resolution.\n     * @param {number=} opt_direction If 0, the nearest resolution will be used.\n     *     If 1, the nearest lower resolution will be used. If -1, the nearest\n     *     higher resolution will be used. Default is 0.\n     * @return {number} Z.\n     * @api\n     */\n    TileGrid.prototype.getZForResolution = function (resolution, opt_direction) {\n        var z = linearFindNearest(this.resolutions_, resolution, opt_direction || 0);\n        return clamp(z, this.minZoom, this.maxZoom);\n    };\n    /**\n     * @param {!import(\"../extent.js\").Extent} extent Extent for this tile grid.\n     * @private\n     */\n    TileGrid.prototype.calculateTileRanges_ = function (extent) {\n        var length = this.resolutions_.length;\n        var fullTileRanges = new Array(length);\n        for (var z = this.minZoom; z < length; ++z) {\n            fullTileRanges[z] = this.getTileRangeForExtentAndZ(extent, z);\n        }\n        this.fullTileRanges_ = fullTileRanges;\n    };\n    return TileGrid;\n}());\nexport default TileGrid;\n//# sourceMappingURL=TileGrid.js.map","/**\n * @module ol/tilegrid\n */\nimport { DEFAULT_MAX_ZOOM, DEFAULT_TILE_SIZE } from './tilegrid/common.js';\nimport { toSize } from './size.js';\nimport { containsCoordinate, createOrUpdate, getCorner, getHeight, getWidth } from './extent.js';\nimport Corner from './extent/Corner.js';\nimport { get as getProjection, METERS_PER_UNIT } from './proj.js';\nimport Units from './proj/Units.js';\nimport TileGrid from './tilegrid/TileGrid.js';\n/**\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {!TileGrid} Default tile grid for the\n * passed projection.\n */\nexport function getForProjection(projection) {\n    var tileGrid = projection.getDefaultTileGrid();\n    if (!tileGrid) {\n        tileGrid = createForProjection(projection);\n        projection.setDefaultTileGrid(tileGrid);\n    }\n    return tileGrid;\n}\n/**\n * @param {TileGrid} tileGrid Tile grid.\n * @param {import(\"./tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n * @param {import(\"./proj/Projection.js\").default} projection Projection.\n * @return {import(\"./tilecoord.js\").TileCoord} Tile coordinate.\n */\nexport function wrapX(tileGrid, tileCoord, projection) {\n    var z = tileCoord[0];\n    var center = tileGrid.getTileCoordCenter(tileCoord);\n    var projectionExtent = extentFromProjection(projection);\n    if (!containsCoordinate(projectionExtent, center)) {\n        var worldWidth = getWidth(projectionExtent);\n        var worldsAway = Math.ceil((projectionExtent[0] - center[0]) / worldWidth);\n        center[0] += worldWidth * worldsAway;\n        return tileGrid.getTileCoordForCoordAndZ(center, z);\n    }\n    else {\n        return tileCoord;\n    }\n}\n/**\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n *     DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n *     DEFAULT_TILE_SIZE).\n * @param {Corner=} opt_corner Extent corner (default is `'top-left'`).\n * @return {!TileGrid} TileGrid instance.\n */\nexport function createForExtent(extent, opt_maxZoom, opt_tileSize, opt_corner) {\n    var corner = opt_corner !== undefined ? opt_corner : Corner.TOP_LEFT;\n    var resolutions = resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize);\n    return new TileGrid({\n        extent: extent,\n        origin: getCorner(extent, corner),\n        resolutions: resolutions,\n        tileSize: opt_tileSize\n    });\n}\n/**\n * @typedef {Object} XYZOptions\n * @property {import(\"./extent.js\").Extent} [extent] Extent for the tile grid. The origin for an XYZ tile grid is the\n * top-left corner of the extent. If `maxResolution` is not provided the zero level of the grid is defined by the resolution\n * at which one tile fits in the provided extent. If not provided, the extent of the EPSG:3857 projection is used.\n * @property {number} [maxResolution] Resolution at level zero.\n * @property {number} [maxZoom] Maximum zoom. The default is `42`. This determines the number of levels\n * in the grid set. For example, a `maxZoom` of 21 means there are 22 levels in the grid set.\n * @property {number} [minZoom=0] Minimum zoom.\n * @property {number|import(\"./size.js\").Size} [tileSize=[256, 256]] Tile size in pixels.\n */\n/**\n * Creates a tile grid with a standard XYZ tiling scheme.\n * @param {XYZOptions=} opt_options Tile grid options.\n * @return {!TileGrid} Tile grid instance.\n * @api\n */\nexport function createXYZ(opt_options) {\n    var xyzOptions = opt_options || {};\n    var extent = xyzOptions.extent || getProjection('EPSG:3857').getExtent();\n    var gridOptions = {\n        extent: extent,\n        minZoom: xyzOptions.minZoom,\n        tileSize: xyzOptions.tileSize,\n        resolutions: resolutionsFromExtent(extent, xyzOptions.maxZoom, xyzOptions.tileSize, xyzOptions.maxResolution)\n    };\n    return new TileGrid(gridOptions);\n}\n/**\n * Create a resolutions array from an extent.  A zoom factor of 2 is assumed.\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n *     DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n *     DEFAULT_TILE_SIZE).\n * @param {number=} opt_maxResolution Resolution at level zero.\n * @return {!Array<number>} Resolutions array.\n */\nfunction resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize, opt_maxResolution) {\n    var maxZoom = opt_maxZoom !== undefined ?\n        opt_maxZoom : DEFAULT_MAX_ZOOM;\n    var height = getHeight(extent);\n    var width = getWidth(extent);\n    var tileSize = toSize(opt_tileSize !== undefined ?\n        opt_tileSize : DEFAULT_TILE_SIZE);\n    var maxResolution = opt_maxResolution > 0 ? opt_maxResolution :\n        Math.max(width / tileSize[0], height / tileSize[1]);\n    var length = maxZoom + 1;\n    var resolutions = new Array(length);\n    for (var z = 0; z < length; ++z) {\n        resolutions[z] = maxResolution / Math.pow(2, z);\n    }\n    return resolutions;\n}\n/**\n * @param {import(\"./proj.js\").ProjectionLike} projection Projection.\n * @param {number=} opt_maxZoom Maximum zoom level (default is\n *     DEFAULT_MAX_ZOOM).\n * @param {number|import(\"./size.js\").Size=} opt_tileSize Tile size (default uses\n *     DEFAULT_TILE_SIZE).\n * @param {Corner=} opt_corner Extent corner (default is `'top-left'`).\n * @return {!TileGrid} TileGrid instance.\n */\nexport function createForProjection(projection, opt_maxZoom, opt_tileSize, opt_corner) {\n    var extent = extentFromProjection(projection);\n    return createForExtent(extent, opt_maxZoom, opt_tileSize, opt_corner);\n}\n/**\n * Generate a tile grid extent from a projection.  If the projection has an\n * extent, it is used.  If not, a global extent is assumed.\n * @param {import(\"./proj.js\").ProjectionLike} projection Projection.\n * @return {import(\"./extent.js\").Extent} Extent.\n */\nexport function extentFromProjection(projection) {\n    projection = getProjection(projection);\n    var extent = projection.getExtent();\n    if (!extent) {\n        var half = 180 * METERS_PER_UNIT[Units.DEGREES] / projection.getMetersPerUnit();\n        extent = createOrUpdate(-half, -half, half, half);\n    }\n    return extent;\n}\n//# sourceMappingURL=tilegrid.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/source/Tile\n */\nimport { abstract } from '../util.js';\nimport TileCache from '../TileCache.js';\nimport TileState from '../TileState.js';\nimport Event from '../events/Event.js';\nimport { equivalent } from '../proj.js';\nimport { toSize, scale as scaleSize } from '../size.js';\nimport Source from './Source.js';\nimport { getKeyZXY, withinExtentAndZ } from '../tilecoord.js';\nimport { wrapX, getForProjection as getTileGridForProjection } from '../tilegrid.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize]\n * @property {boolean} [opaque]\n * @property {number} [tilePixelRatio]\n * @property {import(\"../proj.js\").ProjectionLike} [projection]\n * @property {import(\"./State.js\").default} [state]\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid]\n * @property {boolean} [wrapX=true]\n * @property {number} [transition]\n * @property {string} [key]\n * @property {number} [zDirection=0]\n */\n/**\n * @classdesc\n * Abstract base class; normally only used for creating subclasses and not\n * instantiated in apps.\n * Base class for sources providing images divided into a tile grid.\n * @abstract\n * @api\n */\nvar TileSource = /** @class */ (function (_super) {\n    __extends(TileSource, _super);\n    /**\n     * @param {Options} options SourceTile source options.\n     */\n    function TileSource(options) {\n        var _this = _super.call(this, {\n            attributions: options.attributions,\n            attributionsCollapsible: options.attributionsCollapsible,\n            projection: options.projection,\n            state: options.state,\n            wrapX: options.wrapX\n        }) || this;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.opaque_ = options.opaque !== undefined ? options.opaque : false;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.tilePixelRatio_ = options.tilePixelRatio !== undefined ?\n            options.tilePixelRatio : 1;\n        /**\n         * @protected\n         * @type {import(\"../tilegrid/TileGrid.js\").default}\n         */\n        _this.tileGrid = options.tileGrid !== undefined ? options.tileGrid : null;\n        var tileSize = [256, 256];\n        var tileGrid = options.tileGrid;\n        if (tileGrid) {\n            toSize(tileGrid.getTileSize(tileGrid.getMinZoom()), tileSize);\n        }\n        var canUseScreen = typeof screen !== 'undefined';\n        var width = canUseScreen ? (screen.availWidth || screen.width) : 1920;\n        var height = canUseScreen ? (screen.availHeight || screen.height) : 1080;\n        var minCacheSize = 4 * Math.ceil(width / tileSize[0]) * Math.ceil(height / tileSize[1]);\n        /**\n         * @protected\n         * @type {import(\"../TileCache.js\").default}\n         */\n        _this.tileCache = new TileCache(Math.max(minCacheSize, options.cacheSize || 0));\n        /**\n         * @protected\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.tmpSize = [0, 0];\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.key_ = options.key || '';\n        /**\n         * @protected\n         * @type {import(\"../Tile.js\").Options}\n         */\n        _this.tileOptions = { transition: options.transition };\n        /**\n         * zDirection hint, read by the renderer. Indicates which resolution should be used\n         * by a renderer if the views resolution does not match any resolution of the tile source.\n         * If 0, the nearest resolution will be used. If 1, the nearest lower resolution\n         * will be used. If -1, the nearest higher resolution will be used.\n         * @type {number}\n         */\n        _this.zDirection = options.zDirection ? options.zDirection : 0;\n        return _this;\n    }\n    /**\n     * @return {boolean} Can expire cache.\n     */\n    TileSource.prototype.canExpireCache = function () {\n        return this.tileCache.canExpireCache();\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @param {!Object<string, boolean>} usedTiles Used tiles.\n     */\n    TileSource.prototype.expireCache = function (projection, usedTiles) {\n        var tileCache = this.getTileCacheForProjection(projection);\n        if (tileCache) {\n            tileCache.expireCache(usedTiles);\n        }\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @param {number} z Zoom level.\n     * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n     * @param {function(import(\"../Tile.js\").default):(boolean|void)} callback Called with each\n     *     loaded tile.  If the callback returns `false`, the tile will not be\n     *     considered loaded.\n     * @return {boolean} The tile range is fully covered with loaded tiles.\n     */\n    TileSource.prototype.forEachLoadedTile = function (projection, z, tileRange, callback) {\n        var tileCache = this.getTileCacheForProjection(projection);\n        if (!tileCache) {\n            return false;\n        }\n        var covered = true;\n        var tile, tileCoordKey, loaded;\n        for (var x = tileRange.minX; x <= tileRange.maxX; ++x) {\n            for (var y = tileRange.minY; y <= tileRange.maxY; ++y) {\n                tileCoordKey = getKeyZXY(z, x, y);\n                loaded = false;\n                if (tileCache.containsKey(tileCoordKey)) {\n                    tile = /** @type {!import(\"../Tile.js\").default} */ (tileCache.get(tileCoordKey));\n                    loaded = tile.getState() === TileState.LOADED;\n                    if (loaded) {\n                        loaded = (callback(tile) !== false);\n                    }\n                }\n                if (!loaded) {\n                    covered = false;\n                }\n            }\n        }\n        return covered;\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {number} Gutter.\n     */\n    TileSource.prototype.getGutterForProjection = function (projection) {\n        return 0;\n    };\n    /**\n     * Return the key to be used for all tiles in the source.\n     * @return {string} The key for all tiles.\n     * @protected\n     */\n    TileSource.prototype.getKey = function () {\n        return this.key_;\n    };\n    /**\n     * Set the value to be used as the key for all tiles in the source.\n     * @param {string} key The key for tiles.\n     * @protected\n     */\n    TileSource.prototype.setKey = function (key) {\n        if (this.key_ !== key) {\n            this.key_ = key;\n            this.changed();\n        }\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {boolean} Opaque.\n     */\n    TileSource.prototype.getOpaque = function (projection) {\n        return this.opaque_;\n    };\n    /**\n     * @inheritDoc\n     */\n    TileSource.prototype.getResolutions = function () {\n        return this.tileGrid.getResolutions();\n    };\n    /**\n     * @abstract\n     * @param {number} z Tile coordinate z.\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {!import(\"../Tile.js\").default} Tile.\n     */\n    TileSource.prototype.getTile = function (z, x, y, pixelRatio, projection) {\n        return abstract();\n    };\n    /**\n     * Return the tile grid of the tile source.\n     * @return {import(\"../tilegrid/TileGrid.js\").default} Tile grid.\n     * @api\n     */\n    TileSource.prototype.getTileGrid = function () {\n        return this.tileGrid;\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {!import(\"../tilegrid/TileGrid.js\").default} Tile grid.\n     */\n    TileSource.prototype.getTileGridForProjection = function (projection) {\n        if (!this.tileGrid) {\n            return getTileGridForProjection(projection);\n        }\n        else {\n            return this.tileGrid;\n        }\n    };\n    /**\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {import(\"../TileCache.js\").default} Tile cache.\n     * @protected\n     */\n    TileSource.prototype.getTileCacheForProjection = function (projection) {\n        var thisProj = this.getProjection();\n        if (thisProj && !equivalent(thisProj, projection)) {\n            return null;\n        }\n        else {\n            return this.tileCache;\n        }\n    };\n    /**\n     * Get the tile pixel ratio for this source. Subclasses may override this\n     * method, which is meant to return a supported pixel ratio that matches the\n     * provided `pixelRatio` as close as possible.\n     * @param {number} pixelRatio Pixel ratio.\n     * @return {number} Tile pixel ratio.\n     */\n    TileSource.prototype.getTilePixelRatio = function (pixelRatio) {\n        return this.tilePixelRatio_;\n    };\n    /**\n     * @param {number} z Z.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {import(\"../size.js\").Size} Tile size.\n     */\n    TileSource.prototype.getTilePixelSize = function (z, pixelRatio, projection) {\n        var tileGrid = this.getTileGridForProjection(projection);\n        var tilePixelRatio = this.getTilePixelRatio(pixelRatio);\n        var tileSize = toSize(tileGrid.getTileSize(z), this.tmpSize);\n        if (tilePixelRatio == 1) {\n            return tileSize;\n        }\n        else {\n            return scaleSize(tileSize, tilePixelRatio, this.tmpSize);\n        }\n    };\n    /**\n     * Returns a tile coordinate wrapped around the x-axis. When the tile coordinate\n     * is outside the resolution and extent range of the tile grid, `null` will be\n     * returned.\n     * @param {import(\"../tilecoord.js\").TileCoord} tileCoord Tile coordinate.\n     * @param {import(\"../proj/Projection.js\").default=} opt_projection Projection.\n     * @return {import(\"../tilecoord.js\").TileCoord} Tile coordinate to be passed to the tileUrlFunction or\n     *     null if no tile URL should be created for the passed `tileCoord`.\n     */\n    TileSource.prototype.getTileCoordForTileUrlFunction = function (tileCoord, opt_projection) {\n        var projection = opt_projection !== undefined ?\n            opt_projection : this.getProjection();\n        var tileGrid = this.getTileGridForProjection(projection);\n        if (this.getWrapX() && projection.isGlobal()) {\n            tileCoord = wrapX(tileGrid, tileCoord, projection);\n        }\n        return withinExtentAndZ(tileCoord, tileGrid) ? tileCoord : null;\n    };\n    /**\n     * Remove all cached tiles from the source. The next render cycle will fetch new tiles.\n     * @api\n     */\n    TileSource.prototype.clear = function () {\n        this.tileCache.clear();\n    };\n    TileSource.prototype.refresh = function () {\n        this.clear();\n        _super.prototype.refresh.call(this);\n    };\n    /**\n     * Marks a tile coord as being used, without triggering a load.\n     * @abstract\n     * @param {number} z Tile coordinate z.\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     */\n    TileSource.prototype.useTile = function (z, x, y, projection) { };\n    return TileSource;\n}(Source));\n/**\n * @classdesc\n * Events emitted by {@link module:ol/source/Tile~TileSource} instances are instances of this\n * type.\n */\nvar TileSourceEvent = /** @class */ (function (_super) {\n    __extends(TileSourceEvent, _super);\n    /**\n     * @param {string} type Type.\n     * @param {import(\"../Tile.js\").default} tile The tile.\n     */\n    function TileSourceEvent(type, tile) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The tile related to the event.\n         * @type {import(\"../Tile.js\").default}\n         * @api\n         */\n        _this.tile = tile;\n        return _this;\n    }\n    return TileSourceEvent;\n}(Event));\nexport { TileSourceEvent };\nexport default TileSource;\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/source/TileEventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered when a tile starts loading.\n     * @event module:ol/source/Tile.TileSourceEvent#tileloadstart\n     * @api\n     */\n    TILELOADSTART: 'tileloadstart',\n    /**\n     * Triggered when a tile finishes loading, either when its data is loaded,\n     * or when loading was aborted because the tile is no longer needed.\n     * @event module:ol/source/Tile.TileSourceEvent#tileloadend\n     * @api\n     */\n    TILELOADEND: 'tileloadend',\n    /**\n     * Triggered if tile loading results in an error.\n     * @event module:ol/source/Tile.TileSourceEvent#tileloaderror\n     * @api\n     */\n    TILELOADERROR: 'tileloaderror'\n};\n//# sourceMappingURL=TileEventType.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/source/UrlTile\n */\nimport { getUid } from '../util.js';\nimport TileState from '../TileState.js';\nimport { expandUrl, createFromTemplates, nullTileUrlFunction } from '../tileurlfunction.js';\nimport TileSource, { TileSourceEvent } from './Tile.js';\nimport TileEventType from './TileEventType.js';\nimport { getKeyZXY } from '../tilecoord.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions]\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize]\n * @property {boolean} [opaque]\n * @property {import(\"../proj.js\").ProjectionLike} [projection]\n * @property {import(\"./State.js\").default} [state]\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid]\n * @property {import(\"../Tile.js\").LoadFunction} tileLoadFunction\n * @property {number} [tilePixelRatio]\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction]\n * @property {string} [url]\n * @property {Array<string>} [urls]\n * @property {boolean} [wrapX=true]\n * @property {number} [transition]\n * @property {string} [key]\n * @property {number} [zDirection=0]\n */\n/**\n * @classdesc\n * Base class for sources providing tiles divided into a tile grid over http.\n *\n * @fires import(\"./Tile.js\").TileSourceEvent\n */\nvar UrlTile = /** @class */ (function (_super) {\n    __extends(UrlTile, _super);\n    /**\n     * @param {Options} options Image tile options.\n     */\n    function UrlTile(options) {\n        var _this = _super.call(this, {\n            attributions: options.attributions,\n            cacheSize: options.cacheSize,\n            opaque: options.opaque,\n            projection: options.projection,\n            state: options.state,\n            tileGrid: options.tileGrid,\n            tilePixelRatio: options.tilePixelRatio,\n            wrapX: options.wrapX,\n            transition: options.transition,\n            key: options.key,\n            attributionsCollapsible: options.attributionsCollapsible,\n            zDirection: options.zDirection\n        }) || this;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.generateTileUrlFunction_ = !options.tileUrlFunction;\n        /**\n         * @protected\n         * @type {import(\"../Tile.js\").LoadFunction}\n         */\n        _this.tileLoadFunction = options.tileLoadFunction;\n        /**\n         * @protected\n         * @type {import(\"../Tile.js\").UrlFunction}\n         */\n        _this.tileUrlFunction = options.tileUrlFunction ? options.tileUrlFunction.bind(_this) : nullTileUrlFunction;\n        /**\n         * @protected\n         * @type {!Array<string>|null}\n         */\n        _this.urls = null;\n        if (options.urls) {\n            _this.setUrls(options.urls);\n        }\n        else if (options.url) {\n            _this.setUrl(options.url);\n        }\n        /**\n         * @private\n         * @type {!Object<string, boolean>}\n         */\n        _this.tileLoadingKeys_ = {};\n        return _this;\n    }\n    /**\n     * Return the tile load function of the source.\n     * @return {import(\"../Tile.js\").LoadFunction} TileLoadFunction\n     * @api\n     */\n    UrlTile.prototype.getTileLoadFunction = function () {\n        return this.tileLoadFunction;\n    };\n    /**\n     * Return the tile URL function of the source.\n     * @return {import(\"../Tile.js\").UrlFunction} TileUrlFunction\n     * @api\n     */\n    UrlTile.prototype.getTileUrlFunction = function () {\n        return this.tileUrlFunction;\n    };\n    /**\n     * Return the URLs used for this source.\n     * When a tileUrlFunction is used instead of url or urls,\n     * null will be returned.\n     * @return {!Array<string>|null} URLs.\n     * @api\n     */\n    UrlTile.prototype.getUrls = function () {\n        return this.urls;\n    };\n    /**\n     * Handle tile change events.\n     * @param {import(\"../events/Event.js\").default} event Event.\n     * @protected\n     */\n    UrlTile.prototype.handleTileChange = function (event) {\n        var tile = /** @type {import(\"../Tile.js\").default} */ (event.target);\n        var uid = getUid(tile);\n        var tileState = tile.getState();\n        var type;\n        if (tileState == TileState.LOADING) {\n            this.tileLoadingKeys_[uid] = true;\n            type = TileEventType.TILELOADSTART;\n        }\n        else if (uid in this.tileLoadingKeys_) {\n            delete this.tileLoadingKeys_[uid];\n            type = tileState == TileState.ERROR ? TileEventType.TILELOADERROR :\n                tileState == TileState.LOADED ?\n                    TileEventType.TILELOADEND : undefined;\n        }\n        if (type != undefined) {\n            this.dispatchEvent(new TileSourceEvent(type, tile));\n        }\n    };\n    /**\n     * Set the tile load function of the source.\n     * @param {import(\"../Tile.js\").LoadFunction} tileLoadFunction Tile load function.\n     * @api\n     */\n    UrlTile.prototype.setTileLoadFunction = function (tileLoadFunction) {\n        this.tileCache.clear();\n        this.tileLoadFunction = tileLoadFunction;\n        this.changed();\n    };\n    /**\n     * Set the tile URL function of the source.\n     * @param {import(\"../Tile.js\").UrlFunction} tileUrlFunction Tile URL function.\n     * @param {string=} key Optional new tile key for the source.\n     * @api\n     */\n    UrlTile.prototype.setTileUrlFunction = function (tileUrlFunction, key) {\n        this.tileUrlFunction = tileUrlFunction;\n        this.tileCache.pruneExceptNewestZ();\n        if (typeof key !== 'undefined') {\n            this.setKey(key);\n        }\n        else {\n            this.changed();\n        }\n    };\n    /**\n     * Set the URL to use for requests.\n     * @param {string} url URL.\n     * @api\n     */\n    UrlTile.prototype.setUrl = function (url) {\n        var urls = expandUrl(url);\n        this.urls = urls;\n        this.setUrls(urls);\n    };\n    /**\n     * Set the URLs to use for requests.\n     * @param {Array<string>} urls URLs.\n     * @api\n     */\n    UrlTile.prototype.setUrls = function (urls) {\n        this.urls = urls;\n        var key = urls.join('\\n');\n        if (this.generateTileUrlFunction_) {\n            this.setTileUrlFunction(createFromTemplates(urls, this.tileGrid), key);\n        }\n        else {\n            this.setKey(key);\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    UrlTile.prototype.useTile = function (z, x, y) {\n        var tileCoordKey = getKeyZXY(z, x, y);\n        if (this.tileCache.containsKey(tileCoordKey)) {\n            this.tileCache.get(tileCoordKey);\n        }\n    };\n    return UrlTile;\n}(TileSource));\nexport default UrlTile;\n//# sourceMappingURL=UrlTile.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/source/TileImage\n */\nimport { ENABLE_RASTER_REPROJECTION } from '../reproj/common.js';\nimport { getUid } from '../util.js';\nimport ImageTile from '../ImageTile.js';\nimport TileCache from '../TileCache.js';\nimport TileState from '../TileState.js';\nimport EventType from '../events/EventType.js';\nimport { equivalent, get as getProjection } from '../proj.js';\nimport ReprojTile from '../reproj/Tile.js';\nimport UrlTile from './UrlTile.js';\nimport { getKey, getKeyZXY } from '../tilecoord.js';\nimport { getForProjection as getTileGridForProjection } from '../tilegrid.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize] Tile cache size. The default depends on the screen size. Will be ignored if too small.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images.  Note that\n * you must provide a `crossOrigin` value if you want to access pixel data with the Canvas renderer.\n * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {import(\"../proj.js\").ProjectionLike} [projection] Projection. Default is the view projection.\n * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {import(\"./State.js\").default} [state] Source state.\n * @property {typeof import(\"../ImageTile.js\").default} [tileClass] Class used to instantiate image tiles.\n * Default is {@link module:ol/ImageTile~ImageTile}.\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid] Tile grid.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n *   imageTile.getImage().src = src;\n * };\n * ```\n * @property {number} [tilePixelRatio=1] The pixel ratio used by the tile service. For example, if the tile\n * service advertizes 256px by 256px tiles but actually sends 512px\n * by 512px images (for retina/hidpi devices) then `tilePixelRatio`\n * should be set to `2`.\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction] Optional function to get tile URL given a tile coordinate and the projection.\n * @property {string} [url] URL template. Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.\n * A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`, may be\n * used instead of defining each one separately in the `urls` option.\n * @property {Array<string>} [urls] An array of URL templates.\n * @property {boolean} [wrapX] Whether to wrap the world horizontally. The default, is to\n * request out-of-bounds tiles from the server. When set to `false`, only one\n * world will be rendered. When set to `true`, tiles will be requested for one\n * world only, but they will be wrapped horizontally to render multiple worlds.\n * @property {number} [transition] Duration of the opacity transition for rendering.\n * To disable the opacity transition, pass `transition: 0`.\n * @property {string} [key] Optional tile key for proper cache fetching\n * @property {number} [zDirection=0] Indicate which resolution should be used\n * by a renderer if the view resolution does not match any resolution of the tile source.\n * If 0, the nearest resolution will be used. If 1, the nearest lower resolution\n * will be used. If -1, the nearest higher resolution will be used.\n */\n/**\n * @classdesc\n * Base class for sources providing images divided into a tile grid.\n *\n * @fires import(\"./Tile.js\").TileSourceEvent\n * @api\n */\nvar TileImage = /** @class */ (function (_super) {\n    __extends(TileImage, _super);\n    /**\n     * @param {!Options} options Image tile options.\n     */\n    function TileImage(options) {\n        var _this = _super.call(this, {\n            attributions: options.attributions,\n            cacheSize: options.cacheSize,\n            opaque: options.opaque,\n            projection: options.projection,\n            state: options.state,\n            tileGrid: options.tileGrid,\n            tileLoadFunction: options.tileLoadFunction ?\n                options.tileLoadFunction : defaultTileLoadFunction,\n            tilePixelRatio: options.tilePixelRatio,\n            tileUrlFunction: options.tileUrlFunction,\n            url: options.url,\n            urls: options.urls,\n            wrapX: options.wrapX,\n            transition: options.transition,\n            key: options.key,\n            attributionsCollapsible: options.attributionsCollapsible,\n            zDirection: options.zDirection\n        }) || this;\n        /**\n         * @protected\n         * @type {?string}\n         */\n        _this.crossOrigin =\n            options.crossOrigin !== undefined ? options.crossOrigin : null;\n        /**\n         * @protected\n         * @type {typeof ImageTile}\n         */\n        _this.tileClass = options.tileClass !== undefined ?\n            options.tileClass : ImageTile;\n        /**\n         * @protected\n         * @type {!Object<string, TileCache>}\n         */\n        _this.tileCacheForProjection = {};\n        /**\n         * @protected\n         * @type {!Object<string, import(\"../tilegrid/TileGrid.js\").default>}\n         */\n        _this.tileGridForProjection = {};\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.reprojectionErrorThreshold_ = options.reprojectionErrorThreshold;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.renderReprojectionEdges_ = false;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.canExpireCache = function () {\n        if (!ENABLE_RASTER_REPROJECTION) {\n            return _super.prototype.canExpireCache.call(this);\n        }\n        if (this.tileCache.canExpireCache()) {\n            return true;\n        }\n        else {\n            for (var key in this.tileCacheForProjection) {\n                if (this.tileCacheForProjection[key].canExpireCache()) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.expireCache = function (projection, usedTiles) {\n        if (!ENABLE_RASTER_REPROJECTION) {\n            _super.prototype.expireCache.call(this, projection, usedTiles);\n            return;\n        }\n        var usedTileCache = this.getTileCacheForProjection(projection);\n        this.tileCache.expireCache(this.tileCache == usedTileCache ? usedTiles : {});\n        for (var id in this.tileCacheForProjection) {\n            var tileCache = this.tileCacheForProjection[id];\n            tileCache.expireCache(tileCache == usedTileCache ? usedTiles : {});\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.getGutterForProjection = function (projection) {\n        if (ENABLE_RASTER_REPROJECTION &&\n            this.getProjection() && projection && !equivalent(this.getProjection(), projection)) {\n            return 0;\n        }\n        else {\n            return this.getGutter();\n        }\n    };\n    /**\n     * @return {number} Gutter.\n     */\n    TileImage.prototype.getGutter = function () {\n        return 0;\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.getOpaque = function (projection) {\n        if (ENABLE_RASTER_REPROJECTION &&\n            this.getProjection() && projection && !equivalent(this.getProjection(), projection)) {\n            return false;\n        }\n        else {\n            return _super.prototype.getOpaque.call(this, projection);\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.getTileGridForProjection = function (projection) {\n        if (!ENABLE_RASTER_REPROJECTION) {\n            return _super.prototype.getTileGridForProjection.call(this, projection);\n        }\n        var thisProj = this.getProjection();\n        if (this.tileGrid && (!thisProj || equivalent(thisProj, projection))) {\n            return this.tileGrid;\n        }\n        else {\n            var projKey = getUid(projection);\n            if (!(projKey in this.tileGridForProjection)) {\n                this.tileGridForProjection[projKey] = getTileGridForProjection(projection);\n            }\n            return (\n            /** @type {!import(\"../tilegrid/TileGrid.js\").default} */ (this.tileGridForProjection[projKey]));\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.getTileCacheForProjection = function (projection) {\n        if (!ENABLE_RASTER_REPROJECTION) {\n            return _super.prototype.getTileCacheForProjection.call(this, projection);\n        }\n        var thisProj = this.getProjection();\n        if (!thisProj || equivalent(thisProj, projection)) {\n            return this.tileCache;\n        }\n        else {\n            var projKey = getUid(projection);\n            if (!(projKey in this.tileCacheForProjection)) {\n                this.tileCacheForProjection[projKey] = new TileCache(this.tileCache.highWaterMark);\n            }\n            return this.tileCacheForProjection[projKey];\n        }\n    };\n    /**\n     * @param {number} z Tile coordinate z.\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     * @param {string} key The key set on the tile.\n     * @return {!import(\"../Tile.js\").default} Tile.\n     * @private\n     */\n    TileImage.prototype.createTile_ = function (z, x, y, pixelRatio, projection, key) {\n        var tileCoord = [z, x, y];\n        var urlTileCoord = this.getTileCoordForTileUrlFunction(tileCoord, projection);\n        var tileUrl = urlTileCoord ?\n            this.tileUrlFunction(urlTileCoord, pixelRatio, projection) : undefined;\n        var tile = new this.tileClass(tileCoord, tileUrl !== undefined ? TileState.IDLE : TileState.EMPTY, tileUrl !== undefined ? tileUrl : '', this.crossOrigin, this.tileLoadFunction, this.tileOptions);\n        tile.key = key;\n        tile.addEventListener(EventType.CHANGE, this.handleTileChange.bind(this));\n        return tile;\n    };\n    /**\n     * @inheritDoc\n     */\n    TileImage.prototype.getTile = function (z, x, y, pixelRatio, projection) {\n        var sourceProjection = /** @type {!import(\"../proj/Projection.js\").default} */ (this.getProjection());\n        if (!ENABLE_RASTER_REPROJECTION ||\n            !sourceProjection || !projection || equivalent(sourceProjection, projection)) {\n            return this.getTileInternal(z, x, y, pixelRatio, sourceProjection || projection);\n        }\n        else {\n            var cache = this.getTileCacheForProjection(projection);\n            var tileCoord = [z, x, y];\n            var tile = void 0;\n            var tileCoordKey = getKey(tileCoord);\n            if (cache.containsKey(tileCoordKey)) {\n                tile = /** @type {!import(\"../Tile.js\").default} */ (cache.get(tileCoordKey));\n            }\n            var key = this.getKey();\n            if (tile && tile.key == key) {\n                return tile;\n            }\n            else {\n                var sourceTileGrid = this.getTileGridForProjection(sourceProjection);\n                var targetTileGrid = this.getTileGridForProjection(projection);\n                var wrappedTileCoord = this.getTileCoordForTileUrlFunction(tileCoord, projection);\n                var newTile = new ReprojTile(sourceProjection, sourceTileGrid, projection, targetTileGrid, tileCoord, wrappedTileCoord, this.getTilePixelRatio(pixelRatio), this.getGutter(), function (z, x, y, pixelRatio) {\n                    return this.getTileInternal(z, x, y, pixelRatio, sourceProjection);\n                }.bind(this), this.reprojectionErrorThreshold_, this.renderReprojectionEdges_);\n                newTile.key = key;\n                if (tile) {\n                    newTile.interimTile = tile;\n                    newTile.refreshInterimChain();\n                    cache.replace(tileCoordKey, newTile);\n                }\n                else {\n                    cache.set(tileCoordKey, newTile);\n                }\n                return newTile;\n            }\n        }\n    };\n    /**\n     * @param {number} z Tile coordinate z.\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {!import(\"../proj/Projection.js\").default} projection Projection.\n     * @return {!import(\"../Tile.js\").default} Tile.\n     * @protected\n     */\n    TileImage.prototype.getTileInternal = function (z, x, y, pixelRatio, projection) {\n        var tile = null;\n        var tileCoordKey = getKeyZXY(z, x, y);\n        var key = this.getKey();\n        if (!this.tileCache.containsKey(tileCoordKey)) {\n            tile = this.createTile_(z, x, y, pixelRatio, projection, key);\n            this.tileCache.set(tileCoordKey, tile);\n        }\n        else {\n            tile = this.tileCache.get(tileCoordKey);\n            if (tile.key != key) {\n                // The source's params changed. If the tile has an interim tile and if we\n                // can use it then we use it. Otherwise we create a new tile.  In both\n                // cases we attempt to assign an interim tile to the new tile.\n                var interimTile = tile;\n                tile = this.createTile_(z, x, y, pixelRatio, projection, key);\n                //make the new tile the head of the list,\n                if (interimTile.getState() == TileState.IDLE) {\n                    //the old tile hasn't begun loading yet, and is now outdated, so we can simply discard it\n                    tile.interimTile = interimTile.interimTile;\n                }\n                else {\n                    tile.interimTile = interimTile;\n                }\n                tile.refreshInterimChain();\n                this.tileCache.replace(tileCoordKey, tile);\n            }\n        }\n        return tile;\n    };\n    /**\n     * Sets whether to render reprojection edges or not (usually for debugging).\n     * @param {boolean} render Render the edges.\n     * @api\n     */\n    TileImage.prototype.setRenderReprojectionEdges = function (render) {\n        if (!ENABLE_RASTER_REPROJECTION ||\n            this.renderReprojectionEdges_ == render) {\n            return;\n        }\n        this.renderReprojectionEdges_ = render;\n        for (var id in this.tileCacheForProjection) {\n            this.tileCacheForProjection[id].clear();\n        }\n        this.changed();\n    };\n    /**\n     * Sets the tile grid to use when reprojecting the tiles to the given\n     * projection instead of the default tile grid for the projection.\n     *\n     * This can be useful when the default tile grid cannot be created\n     * (e.g. projection has no extent defined) or\n     * for optimization reasons (custom tile size, resolutions, ...).\n     *\n     * @param {import(\"../proj.js\").ProjectionLike} projection Projection.\n     * @param {import(\"../tilegrid/TileGrid.js\").default} tilegrid Tile grid to use for the projection.\n     * @api\n     */\n    TileImage.prototype.setTileGridForProjection = function (projection, tilegrid) {\n        if (ENABLE_RASTER_REPROJECTION) {\n            var proj = getProjection(projection);\n            if (proj) {\n                var projKey = getUid(proj);\n                if (!(projKey in this.tileGridForProjection)) {\n                    this.tileGridForProjection[projKey] = tilegrid;\n                }\n            }\n        }\n    };\n    return TileImage;\n}(UrlTile));\n/**\n * @param {ImageTile} imageTile Image tile.\n * @param {string} src Source.\n */\nfunction defaultTileLoadFunction(imageTile, src) {\n    /** @type {HTMLImageElement|HTMLVideoElement} */ (imageTile.getImage()).src = src;\n}\nexport default TileImage;\n//# sourceMappingURL=TileImage.js.map","/**\n * @module ol/source/XYZ\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport TileImage from './TileImage.js';\nimport { createXYZ, extentFromProjection } from '../tilegrid.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.\n * @property {number} [cacheSize] Tile cache size. The default depends on the screen size. Will be ignored if too small.\n * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images.  Note that\n * you must provide a `crossOrigin` value if you want to access pixel data with the Canvas renderer.\n * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {import(\"../proj.js\").ProjectionLike} [projection='EPSG:3857'] Projection.\n * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {number} [maxZoom=42] Optional max zoom level. Not used if `tileGrid` is provided.\n * @property {number} [minZoom=0] Optional min zoom level. Not used if `tileGrid` is provided.\n * @property {number} [maxResolution] Optional tile grid resolution at level zero. Not used if `tileGrid` is provided.\n * @property {import(\"../tilegrid/TileGrid.js\").default} [tileGrid] Tile grid.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n *   imageTile.getImage().src = src;\n * };\n * ```\n * @property {number} [tilePixelRatio=1] The pixel ratio used by the tile service.\n * For example, if the tile service advertizes 256px by 256px tiles but actually sends 512px\n * by 512px images (for retina/hidpi devices) then `tilePixelRatio`\n * should be set to `2`.\n * @property {number|import(\"../size.js\").Size} [tileSize=[256, 256]] The tile size used by the tile service.\n * Not used if `tileGrid` is provided.\n * @property {import(\"../Tile.js\").UrlFunction} [tileUrlFunction] Optional function to get\n * tile URL given a tile coordinate and the projection.\n * Required if `url` or `urls` are not provided.\n * @property {string} [url] URL template. Must include `{x}`, `{y}` or `{-y}`,\n * and `{z}` placeholders. A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`,\n * may be used instead of defining each one separately in the `urls` option.\n * @property {Array<string>} [urls] An array of URL templates.\n * @property {boolean} [wrapX=true] Whether to wrap the world horizontally.\n * @property {number} [transition] Duration of the opacity transition for rendering.\n * To disable the opacity transition, pass `transition: 0`.\n * @property {number} [zDirection=0] Indicate which resolution should be used\n * by a renderer if the view resolution does not match any resolution of the tile source.\n * If 0, the nearest resolution will be used. If 1, the nearest lower resolution\n * will be used. If -1, the nearest higher resolution will be used.\n */\n/**\n * @classdesc\n * Layer source for tile data with URLs in a set XYZ format that are\n * defined in a URL template. By default, this follows the widely-used\n * Google grid where `x` 0 and `y` 0 are in the top left. Grids like\n * TMS where `x` 0 and `y` 0 are in the bottom left can be used by\n * using the `{-y}` placeholder in the URL template, so long as the\n * source does not have a custom tile grid. In this case,\n * {@link module:ol/source/TileImage} can be used with a `tileUrlFunction`\n * such as:\n *\n *  tileUrlFunction: function(coordinate) {\n *    return 'http://mapserver.com/' + coordinate[0] + '/' +\n *        coordinate[1] + '/' + coordinate[2] + '.png';\n *    }\n *\n * @api\n */\nvar XYZ = /** @class */ (function (_super) {\n    __extends(XYZ, _super);\n    /**\n     * @param {Options=} opt_options XYZ options.\n     */\n    function XYZ(opt_options) {\n        var _this = this;\n        var options = opt_options || {};\n        var projection = options.projection !== undefined ?\n            options.projection : 'EPSG:3857';\n        var tileGrid = options.tileGrid !== undefined ? options.tileGrid :\n            createXYZ({\n                extent: extentFromProjection(projection),\n                maxResolution: options.maxResolution,\n                maxZoom: options.maxZoom,\n                minZoom: options.minZoom,\n                tileSize: options.tileSize\n            });\n        _this = _super.call(this, {\n            attributions: options.attributions,\n            cacheSize: options.cacheSize,\n            crossOrigin: options.crossOrigin,\n            opaque: options.opaque,\n            projection: projection,\n            reprojectionErrorThreshold: options.reprojectionErrorThreshold,\n            tileGrid: tileGrid,\n            tileLoadFunction: options.tileLoadFunction,\n            tilePixelRatio: options.tilePixelRatio,\n            tileUrlFunction: options.tileUrlFunction,\n            url: options.url,\n            urls: options.urls,\n            wrapX: options.wrapX !== undefined ? options.wrapX : true,\n            transition: options.transition,\n            attributionsCollapsible: options.attributionsCollapsible,\n            zDirection: options.zDirection\n        }) || this;\n        return _this;\n    }\n    return XYZ;\n}(TileImage));\nexport default XYZ;\n//# sourceMappingURL=XYZ.js.map","/**\n * @module ol/source/OSM\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport XYZ from './XYZ.js';\n/**\n * The attribution containing a link to the OpenStreetMap Copyright and License\n * page.\n * @const\n * @type {string}\n * @api\n */\nexport var ATTRIBUTION = '&#169; ' +\n    '<a href=\"https://www.openstreetmap.org/copyright\" target=\"_blank\">OpenStreetMap</a> ' +\n    'contributors.';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {number} [cacheSize] Tile cache size. The default depends on the screen size. Will be ignored if too small.\n * @property {null|string} [crossOrigin='anonymous'] The `crossOrigin` attribute for loaded images.  Note that\n * you must provide a `crossOrigin` value if you want to access pixel data with the Canvas renderer.\n * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.\n * @property {number} [maxZoom=19] Max zoom.\n * @property {boolean} [opaque=true] Whether the layer is opaque.\n * @property {number} [reprojectionErrorThreshold=1.5] Maximum allowed reprojection error (in pixels).\n * Higher values can increase reprojection performance, but decrease precision.\n * @property {import(\"../Tile.js\").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL. The default is\n * ```js\n * function(imageTile, src) {\n *   imageTile.getImage().src = src;\n * };\n * ```\n * @property {string} [url='https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png'] URL template.\n * Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.\n * @property {boolean} [wrapX=true] Whether to wrap the world horizontally.\n */\n/**\n * @classdesc\n * Layer source for the OpenStreetMap tile server.\n * @api\n */\nvar OSM = /** @class */ (function (_super) {\n    __extends(OSM, _super);\n    /**\n     * @param {Options=} [opt_options] Open Street Map options.\n     */\n    function OSM(opt_options) {\n        var _this = this;\n        var options = opt_options || {};\n        var attributions;\n        if (options.attributions !== undefined) {\n            attributions = options.attributions;\n        }\n        else {\n            attributions = [ATTRIBUTION];\n        }\n        var crossOrigin = options.crossOrigin !== undefined ?\n            options.crossOrigin : 'anonymous';\n        var url = options.url !== undefined ?\n            options.url : 'https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png';\n        _this = _super.call(this, {\n            attributions: attributions,\n            cacheSize: options.cacheSize,\n            crossOrigin: crossOrigin,\n            opaque: options.opaque !== undefined ? options.opaque : true,\n            maxZoom: options.maxZoom !== undefined ? options.maxZoom : 19,\n            reprojectionErrorThreshold: options.reprojectionErrorThreshold,\n            tileLoadFunction: options.tileLoadFunction,\n            url: url,\n            wrapX: options.wrapX,\n            attributionsCollapsible: false\n        }) || this;\n        return _this;\n    }\n    return OSM;\n}(XYZ));\nexport default OSM;\n//# sourceMappingURL=OSM.js.map","/**\n * @module ol/OverlayPositioning\n */\n/**\n * Overlay position: `'bottom-left'`, `'bottom-center'`,  `'bottom-right'`,\n * `'center-left'`, `'center-center'`, `'center-right'`, `'top-left'`,\n * `'top-center'`, `'top-right'`\n * @enum {string}\n */\nexport default {\n    BOTTOM_LEFT: 'bottom-left',\n    BOTTOM_CENTER: 'bottom-center',\n    BOTTOM_RIGHT: 'bottom-right',\n    CENTER_LEFT: 'center-left',\n    CENTER_CENTER: 'center-center',\n    CENTER_RIGHT: 'center-right',\n    TOP_LEFT: 'top-left',\n    TOP_CENTER: 'top-center',\n    TOP_RIGHT: 'top-right'\n};\n//# sourceMappingURL=OverlayPositioning.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/Overlay\n */\nimport MapEventType from './MapEventType.js';\nimport BaseObject, { getChangeEventType } from './Object.js';\nimport OverlayPositioning from './OverlayPositioning.js';\nimport { CLASS_SELECTABLE } from './css.js';\nimport { removeNode, removeChildren, outerWidth, outerHeight } from './dom.js';\nimport { listen, unlistenByKey } from './events.js';\nimport { containsExtent } from './extent.js';\n/**\n * @typedef {Object} Options\n * @property {number|string} [id] Set the overlay id. The overlay id can be used\n * with the {@link module:ol/Map~Map#getOverlayById} method.\n * @property {HTMLElement} [element] The overlay element.\n * @property {Array<number>} [offset=[0, 0]] Offsets in pixels used when positioning\n * the overlay. The first element in the\n * array is the horizontal offset. A positive value shifts the overlay right.\n * The second element in the array is the vertical offset. A positive value\n * shifts the overlay down.\n * @property {import(\"./coordinate.js\").Coordinate} [position] The overlay position\n * in map projection.\n * @property {OverlayPositioning} [positioning='top-left'] Defines how\n * the overlay is actually positioned with respect to its `position` property.\n * Possible values are `'bottom-left'`, `'bottom-center'`, `'bottom-right'`,\n * `'center-left'`, `'center-center'`, `'center-right'`, `'top-left'`,\n * `'top-center'`, and `'top-right'`.\n * @property {boolean} [stopEvent=true] Whether event propagation to the map\n * viewport should be stopped. If `true` the overlay is placed in the same\n * container as that of the controls (CSS class name\n * `ol-overlaycontainer-stopevent`); if `false` it is placed in the container\n * with CSS class name specified by the `className` property.\n * @property {boolean} [insertFirst=true] Whether the overlay is inserted first\n * in the overlay container, or appended. If the overlay is placed in the same\n * container as that of the controls (see the `stopEvent` option) you will\n * probably set `insertFirst` to `true` so the overlay is displayed below the\n * controls.\n * @property {PanIntoViewOptions|boolean} [autoPan=false] Pan the map when calling\n * `setPosition`, so that the overlay is entirely visible in the current viewport?\n * If `true` (deprecated), then `autoPanAnimation` and `autoPanMargin` will be\n * used to determine the panning parameters; if an object is supplied then other\n * parameters are ignored.\n * @property {PanOptions} [autoPanAnimation] The animation options used to pan\n * the overlay into view. This animation is only used when `autoPan` is enabled.\n * A `duration` and `easing` may be provided to customize the animation.\n * Deprecated and ignored if `autoPan` is supplied as an object.\n * @property {number} [autoPanMargin=20] The margin (in pixels) between the\n * overlay and the borders of the map when autopanning. Deprecated and ignored\n * if `autoPan` is supplied as an object.\n * @property {PanIntoViewOptions} [autoPanOptions] The options to use for the\n * autoPan. This is only used when `autoPan` is enabled and has preference over\n * the individual `autoPanMargin` and `autoPanOptions`.\n * @property {string} [className='ol-overlay-container ol-selectable'] CSS class\n * name.\n */\n/**\n * @typedef {Object} PanOptions\n * @property {number} [duration=1000] The duration of the animation in\n * milliseconds.\n * @property {function(number):number} [easing] The easing function to use. Can\n * be one from {@link module:ol/easing} or a custom function.\n * Default is {@link module:ol/easing~inAndOut}.\n */\n/**\n * @typedef {Object} PanIntoViewOptions\n * @property {PanOptions} [animation={}] The animation parameters for the pan\n * @property {number} [margin=20] The margin (in pixels) between the\n * overlay and the borders of the map when panning into view.\n */\n/**\n * @enum {string}\n * @protected\n */\nvar Property = {\n    ELEMENT: 'element',\n    MAP: 'map',\n    OFFSET: 'offset',\n    POSITION: 'position',\n    POSITIONING: 'positioning'\n};\n/**\n * @classdesc\n * An element to be displayed over the map and attached to a single map\n * location.  Like {@link module:ol/control/Control~Control}, Overlays are\n * visible widgets. Unlike Controls, they are not in a fixed position on the\n * screen, but are tied to a geographical coordinate, so panning the map will\n * move an Overlay but not a Control.\n *\n * Example:\n *\n *     import Overlay from 'ol/Overlay';\n *\n *     var popup = new Overlay({\n *       element: document.getElementById('popup')\n *     });\n *     popup.setPosition(coordinate);\n *     map.addOverlay(popup);\n *\n * @api\n */\nvar Overlay = /** @class */ (function (_super) {\n    __extends(Overlay, _super);\n    /**\n     * @param {Options} options Overlay options.\n     */\n    function Overlay(options) {\n        var _this = _super.call(this) || this;\n        /**\n         * @protected\n         * @type {Options}\n         */\n        _this.options = options;\n        /**\n         * @protected\n         * @type {number|string|undefined}\n         */\n        _this.id = options.id;\n        /**\n         * @protected\n         * @type {boolean}\n         */\n        _this.insertFirst = options.insertFirst !== undefined ?\n            options.insertFirst : true;\n        /**\n         * @protected\n         * @type {boolean}\n         */\n        _this.stopEvent = options.stopEvent !== undefined ? options.stopEvent : true;\n        /**\n         * @protected\n         * @type {HTMLElement}\n         */\n        _this.element = document.createElement('div');\n        _this.element.className = options.className !== undefined ?\n            options.className : 'ol-overlay-container ' + CLASS_SELECTABLE;\n        _this.element.style.position = 'absolute';\n        var autoPan = options.autoPan;\n        if (autoPan && ('object' !== typeof autoPan)) {\n            autoPan = {\n                animation: options.autoPanAnimation,\n                margin: options.autoPanMargin\n            };\n        }\n        /**\n         * @protected\n         * @type {PanIntoViewOptions|false}\n         */\n        _this.autoPan = /** @type {PanIntoViewOptions} */ (autoPan) || false;\n        /**\n         * @protected\n         * @type {{transform_: string,\n         *         visible: boolean}}\n         */\n        _this.rendered = {\n            transform_: '',\n            visible: true\n        };\n        /**\n         * @protected\n         * @type {?import(\"./events.js\").EventsKey}\n         */\n        _this.mapPostrenderListenerKey = null;\n        _this.addEventListener(getChangeEventType(Property.ELEMENT), _this.handleElementChanged);\n        _this.addEventListener(getChangeEventType(Property.MAP), _this.handleMapChanged);\n        _this.addEventListener(getChangeEventType(Property.OFFSET), _this.handleOffsetChanged);\n        _this.addEventListener(getChangeEventType(Property.POSITION), _this.handlePositionChanged);\n        _this.addEventListener(getChangeEventType(Property.POSITIONING), _this.handlePositioningChanged);\n        if (options.element !== undefined) {\n            _this.setElement(options.element);\n        }\n        _this.setOffset(options.offset !== undefined ? options.offset : [0, 0]);\n        _this.setPositioning(options.positioning !== undefined ?\n            /** @type {OverlayPositioning} */ (options.positioning) :\n            OverlayPositioning.TOP_LEFT);\n        if (options.position !== undefined) {\n            _this.setPosition(options.position);\n        }\n        return _this;\n    }\n    /**\n     * Get the DOM element of this overlay.\n     * @return {HTMLElement|undefined} The Element containing the overlay.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.getElement = function () {\n        return /** @type {HTMLElement|undefined} */ (this.get(Property.ELEMENT));\n    };\n    /**\n     * Get the overlay identifier which is set on constructor.\n     * @return {number|string|undefined} Id.\n     * @api\n     */\n    Overlay.prototype.getId = function () {\n        return this.id;\n    };\n    /**\n     * Get the map associated with this overlay.\n     * @return {import(\"./PluggableMap.js\").default|undefined} The map that the\n     * overlay is part of.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.getMap = function () {\n        return (\n        /** @type {import(\"./PluggableMap.js\").default|undefined} */ (this.get(Property.MAP)));\n    };\n    /**\n     * Get the offset of this overlay.\n     * @return {Array<number>} The offset.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.getOffset = function () {\n        return /** @type {Array<number>} */ (this.get(Property.OFFSET));\n    };\n    /**\n     * Get the current position of this overlay.\n     * @return {import(\"./coordinate.js\").Coordinate|undefined} The spatial point that the overlay is\n     *     anchored at.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.getPosition = function () {\n        return (\n        /** @type {import(\"./coordinate.js\").Coordinate|undefined} */ (this.get(Property.POSITION)));\n    };\n    /**\n     * Get the current positioning of this overlay.\n     * @return {OverlayPositioning} How the overlay is positioned\n     *     relative to its point on the map.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.getPositioning = function () {\n        return (\n        /** @type {OverlayPositioning} */ (this.get(Property.POSITIONING)));\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.handleElementChanged = function () {\n        removeChildren(this.element);\n        var element = this.getElement();\n        if (element) {\n            this.element.appendChild(element);\n        }\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.handleMapChanged = function () {\n        if (this.mapPostrenderListenerKey) {\n            removeNode(this.element);\n            unlistenByKey(this.mapPostrenderListenerKey);\n            this.mapPostrenderListenerKey = null;\n        }\n        var map = this.getMap();\n        if (map) {\n            this.mapPostrenderListenerKey = listen(map, MapEventType.POSTRENDER, this.render, this);\n            this.updatePixelPosition();\n            var container = this.stopEvent ?\n                map.getOverlayContainerStopEvent() : map.getOverlayContainer();\n            if (this.insertFirst) {\n                container.insertBefore(this.element, container.childNodes[0] || null);\n            }\n            else {\n                container.appendChild(this.element);\n            }\n            this.performAutoPan();\n        }\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.render = function () {\n        this.updatePixelPosition();\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.handleOffsetChanged = function () {\n        this.updatePixelPosition();\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.handlePositionChanged = function () {\n        this.updatePixelPosition();\n        this.performAutoPan();\n    };\n    /**\n     * @protected\n     */\n    Overlay.prototype.handlePositioningChanged = function () {\n        this.updatePixelPosition();\n    };\n    /**\n     * Set the DOM element to be associated with this overlay.\n     * @param {HTMLElement|undefined} element The Element containing the overlay.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.setElement = function (element) {\n        this.set(Property.ELEMENT, element);\n    };\n    /**\n     * Set the map to be associated with this overlay.\n     * @param {import(\"./PluggableMap.js\").default|undefined} map The map that the\n     * overlay is part of.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.setMap = function (map) {\n        this.set(Property.MAP, map);\n    };\n    /**\n     * Set the offset for this overlay.\n     * @param {Array<number>} offset Offset.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.setOffset = function (offset) {\n        this.set(Property.OFFSET, offset);\n    };\n    /**\n     * Set the position for this overlay. If the position is `undefined` the\n     * overlay is hidden.\n     * @param {import(\"./coordinate.js\").Coordinate|undefined} position The spatial point that the overlay\n     *     is anchored at.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.setPosition = function (position) {\n        this.set(Property.POSITION, position);\n    };\n    /**\n     * Pan the map so that the overlay is entirely visisble in the current viewport\n     * (if necessary) using the configured autoPan parameters\n     * @protected\n     */\n    Overlay.prototype.performAutoPan = function () {\n        if (this.autoPan) {\n            this.panIntoView(this.autoPan);\n        }\n    };\n    /**\n     * Pan the map so that the overlay is entirely visible in the current viewport\n     * (if necessary).\n     * @param {PanIntoViewOptions|undefined} panIntoViewOptions Options for the pan action\n     * @api\n     */\n    Overlay.prototype.panIntoView = function (panIntoViewOptions) {\n        var map = this.getMap();\n        if (!map || !map.getTargetElement() || !this.get(Property.POSITION)) {\n            return;\n        }\n        var mapRect = this.getRect(map.getTargetElement(), map.getSize());\n        var element = this.getElement();\n        var overlayRect = this.getRect(element, [outerWidth(element), outerHeight(element)]);\n        var myMargin = (panIntoViewOptions.margin === undefined) ? 20 : panIntoViewOptions.margin;\n        if (!containsExtent(mapRect, overlayRect)) {\n            // the overlay is not completely inside the viewport, so pan the map\n            var offsetLeft = overlayRect[0] - mapRect[0];\n            var offsetRight = mapRect[2] - overlayRect[2];\n            var offsetTop = overlayRect[1] - mapRect[1];\n            var offsetBottom = mapRect[3] - overlayRect[3];\n            var delta = [0, 0];\n            if (offsetLeft < 0) {\n                // move map to the left\n                delta[0] = offsetLeft - myMargin;\n            }\n            else if (offsetRight < 0) {\n                // move map to the right\n                delta[0] = Math.abs(offsetRight) + myMargin;\n            }\n            if (offsetTop < 0) {\n                // move map up\n                delta[1] = offsetTop - myMargin;\n            }\n            else if (offsetBottom < 0) {\n                // move map down\n                delta[1] = Math.abs(offsetBottom) + myMargin;\n            }\n            if (delta[0] !== 0 || delta[1] !== 0) {\n                var center = /** @type {import(\"./coordinate.js\").Coordinate} */ (map.getView().getCenterInternal());\n                var centerPx = map.getPixelFromCoordinateInternal(center);\n                var newCenterPx = [\n                    centerPx[0] + delta[0],\n                    centerPx[1] + delta[1]\n                ];\n                var panOptions = panIntoViewOptions.animation || {};\n                map.getView().animateInternal({\n                    center: map.getCoordinateFromPixelInternal(newCenterPx),\n                    duration: panOptions.duration,\n                    easing: panOptions.easing\n                });\n            }\n        }\n    };\n    /**\n     * Get the extent of an element relative to the document\n     * @param {HTMLElement} element The element.\n     * @param {import(\"./size.js\").Size} size The size of the element.\n     * @return {import(\"./extent.js\").Extent} The extent.\n     * @protected\n     */\n    Overlay.prototype.getRect = function (element, size) {\n        var box = element.getBoundingClientRect();\n        var offsetX = box.left + window.pageXOffset;\n        var offsetY = box.top + window.pageYOffset;\n        return [\n            offsetX,\n            offsetY,\n            offsetX + size[0],\n            offsetY + size[1]\n        ];\n    };\n    /**\n     * Set the positioning for this overlay.\n     * @param {OverlayPositioning} positioning how the overlay is\n     *     positioned relative to its point on the map.\n     * @observable\n     * @api\n     */\n    Overlay.prototype.setPositioning = function (positioning) {\n        this.set(Property.POSITIONING, positioning);\n    };\n    /**\n     * Modify the visibility of the element.\n     * @param {boolean} visible Element visibility.\n     * @protected\n     */\n    Overlay.prototype.setVisible = function (visible) {\n        if (this.rendered.visible !== visible) {\n            this.element.style.display = visible ? '' : 'none';\n            this.rendered.visible = visible;\n        }\n    };\n    /**\n     * Update pixel position.\n     * @protected\n     */\n    Overlay.prototype.updatePixelPosition = function () {\n        var map = this.getMap();\n        var position = this.getPosition();\n        if (!map || !map.isRendered() || !position) {\n            this.setVisible(false);\n            return;\n        }\n        var pixel = map.getPixelFromCoordinate(position);\n        var mapSize = map.getSize();\n        this.updateRenderedPosition(pixel, mapSize);\n    };\n    /**\n     * @param {import(\"./pixel.js\").Pixel} pixel The pixel location.\n     * @param {import(\"./size.js\").Size|undefined} mapSize The map size.\n     * @protected\n     */\n    Overlay.prototype.updateRenderedPosition = function (pixel, mapSize) {\n        var style = this.element.style;\n        var offset = this.getOffset();\n        var positioning = this.getPositioning();\n        this.setVisible(true);\n        var x = Math.round(pixel[0] + offset[0]) + 'px';\n        var y = Math.round(pixel[1] + offset[1]) + 'px';\n        var posX = '0%';\n        var posY = '0%';\n        if (positioning == OverlayPositioning.BOTTOM_RIGHT ||\n            positioning == OverlayPositioning.CENTER_RIGHT ||\n            positioning == OverlayPositioning.TOP_RIGHT) {\n            posX = '-100%';\n        }\n        else if (positioning == OverlayPositioning.BOTTOM_CENTER ||\n            positioning == OverlayPositioning.CENTER_CENTER ||\n            positioning == OverlayPositioning.TOP_CENTER) {\n            posX = '-50%';\n        }\n        if (positioning == OverlayPositioning.BOTTOM_LEFT ||\n            positioning == OverlayPositioning.BOTTOM_CENTER ||\n            positioning == OverlayPositioning.BOTTOM_RIGHT) {\n            posY = '-100%';\n        }\n        else if (positioning == OverlayPositioning.CENTER_LEFT ||\n            positioning == OverlayPositioning.CENTER_CENTER ||\n            positioning == OverlayPositioning.CENTER_RIGHT) {\n            posY = '-50%';\n        }\n        var transform = \"translate(\" + posX + \", \" + posY + \") translate(\" + x + \", \" + y + \")\";\n        if (this.rendered.transform_ != transform) {\n            this.rendered.transform_ = transform;\n            style.transform = transform;\n            // @ts-ignore IE9\n            style.msTransform = transform;\n        }\n    };\n    /**\n     * returns the options this Overlay has been created with\n     * @return {Options} overlay options\n     */\n    Overlay.prototype.getOptions = function () {\n        return this.options;\n    };\n    return Overlay;\n}(BaseObject));\nexport default Overlay;\n//# sourceMappingURL=Overlay.js.map","/**\n * @module ol/style/Stroke\n */\n/**\n * @typedef {Object} Options\n * @property {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} [color] A color, gradient or pattern.\n * See {@link module:ol/color~Color} and {@link module:ol/colorlike~ColorLike} for possible formats.\n * Default null; if null, the Canvas/renderer default black will be used.\n * @property {CanvasLineCap} [lineCap='round'] Line cap style: `butt`, `round`, or `square`.\n * @property {CanvasLineJoin} [lineJoin='round'] Line join style: `bevel`, `round`, or `miter`.\n * @property {Array<number>} [lineDash] Line dash pattern. Default is `null` (no dash).\n * Please note that Internet Explorer 10 and lower do not support the `setLineDash` method on\n * the `CanvasRenderingContext2D` and therefore this option will have no visual effect in these browsers.\n * @property {number} [lineDashOffset=0] Line dash offset.\n * @property {number} [miterLimit=10] Miter limit.\n * @property {number} [width] Width.\n */\n/**\n * @classdesc\n * Set stroke style for vector features.\n * Note that the defaults given are the Canvas defaults, which will be used if\n * option is not defined. The `get` functions return whatever was entered in\n * the options; they will not return the default.\n * @api\n */\nvar Stroke = /** @class */ (function () {\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function Stroke(opt_options) {\n        var options = opt_options || {};\n        /**\n         * @private\n         * @type {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike}\n         */\n        this.color_ = options.color !== undefined ? options.color : null;\n        /**\n         * @private\n         * @type {CanvasLineCap|undefined}\n         */\n        this.lineCap_ = options.lineCap;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        this.lineDash_ = options.lineDash !== undefined ? options.lineDash : null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.lineDashOffset_ = options.lineDashOffset;\n        /**\n         * @private\n         * @type {CanvasLineJoin|undefined}\n         */\n        this.lineJoin_ = options.lineJoin;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.miterLimit_ = options.miterLimit;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.width_ = options.width;\n    }\n    /**\n     * Clones the style.\n     * @return {Stroke} The cloned style.\n     * @api\n     */\n    Stroke.prototype.clone = function () {\n        var color = this.getColor();\n        return new Stroke({\n            color: Array.isArray(color) ? color.slice() : color || undefined,\n            lineCap: this.getLineCap(),\n            lineDash: this.getLineDash() ? this.getLineDash().slice() : undefined,\n            lineDashOffset: this.getLineDashOffset(),\n            lineJoin: this.getLineJoin(),\n            miterLimit: this.getMiterLimit(),\n            width: this.getWidth()\n        });\n    };\n    /**\n     * Get the stroke color.\n     * @return {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} Color.\n     * @api\n     */\n    Stroke.prototype.getColor = function () {\n        return this.color_;\n    };\n    /**\n     * Get the line cap type for the stroke.\n     * @return {CanvasLineCap|undefined} Line cap.\n     * @api\n     */\n    Stroke.prototype.getLineCap = function () {\n        return this.lineCap_;\n    };\n    /**\n     * Get the line dash style for the stroke.\n     * @return {Array<number>} Line dash.\n     * @api\n     */\n    Stroke.prototype.getLineDash = function () {\n        return this.lineDash_;\n    };\n    /**\n     * Get the line dash offset for the stroke.\n     * @return {number|undefined} Line dash offset.\n     * @api\n     */\n    Stroke.prototype.getLineDashOffset = function () {\n        return this.lineDashOffset_;\n    };\n    /**\n     * Get the line join type for the stroke.\n     * @return {CanvasLineJoin|undefined} Line join.\n     * @api\n     */\n    Stroke.prototype.getLineJoin = function () {\n        return this.lineJoin_;\n    };\n    /**\n     * Get the miter limit for the stroke.\n     * @return {number|undefined} Miter limit.\n     * @api\n     */\n    Stroke.prototype.getMiterLimit = function () {\n        return this.miterLimit_;\n    };\n    /**\n     * Get the stroke width.\n     * @return {number|undefined} Width.\n     * @api\n     */\n    Stroke.prototype.getWidth = function () {\n        return this.width_;\n    };\n    /**\n     * Set the color.\n     *\n     * @param {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} color Color.\n     * @api\n     */\n    Stroke.prototype.setColor = function (color) {\n        this.color_ = color;\n    };\n    /**\n     * Set the line cap.\n     *\n     * @param {CanvasLineCap|undefined} lineCap Line cap.\n     * @api\n     */\n    Stroke.prototype.setLineCap = function (lineCap) {\n        this.lineCap_ = lineCap;\n    };\n    /**\n     * Set the line dash.\n     *\n     * Please note that Internet Explorer 10 and lower [do not support][mdn] the\n     * `setLineDash` method on the `CanvasRenderingContext2D` and therefore this\n     * property will have no visual effect in these browsers.\n     *\n     * [mdn]: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash#Browser_compatibility\n     *\n     * @param {Array<number>} lineDash Line dash.\n     * @api\n     */\n    Stroke.prototype.setLineDash = function (lineDash) {\n        this.lineDash_ = lineDash;\n    };\n    /**\n     * Set the line dash offset.\n     *\n     * @param {number|undefined} lineDashOffset Line dash offset.\n     * @api\n     */\n    Stroke.prototype.setLineDashOffset = function (lineDashOffset) {\n        this.lineDashOffset_ = lineDashOffset;\n    };\n    /**\n     * Set the line join.\n     *\n     * @param {CanvasLineJoin|undefined} lineJoin Line join.\n     * @api\n     */\n    Stroke.prototype.setLineJoin = function (lineJoin) {\n        this.lineJoin_ = lineJoin;\n    };\n    /**\n     * Set the miter limit.\n     *\n     * @param {number|undefined} miterLimit Miter limit.\n     * @api\n     */\n    Stroke.prototype.setMiterLimit = function (miterLimit) {\n        this.miterLimit_ = miterLimit;\n    };\n    /**\n     * Set the width.\n     *\n     * @param {number|undefined} width Width.\n     * @api\n     */\n    Stroke.prototype.setWidth = function (width) {\n        this.width_ = width;\n    };\n    return Stroke;\n}());\nexport default Stroke;\n//# sourceMappingURL=Stroke.js.map","/**\n * @module ol/style/RegularShape\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport { asArray } from '../color.js';\nimport { asColorLike } from '../colorlike.js';\nimport { createCanvasContext2D } from '../dom.js';\nimport ImageState from '../ImageState.js';\nimport { defaultStrokeStyle, defaultFillStyle, defaultLineCap, defaultLineWidth, defaultLineJoin, defaultMiterLimit } from '../render/canvas.js';\nimport ImageStyle from './Image.js';\n/**\n * Specify radius for regular polygons, or radius1 and radius2 for stars.\n * @typedef {Object} Options\n * @property {import(\"./Fill.js\").default} [fill] Fill style.\n * @property {number} points Number of points for stars and regular polygons. In case of a polygon, the number of points\n * is the number of sides.\n * @property {number} [radius] Radius of a regular polygon.\n * @property {number} [radius1] Outer radius of a star.\n * @property {number} [radius2] Inner radius of a star.\n * @property {number} [angle=0] Shape's angle in radians. A value of 0 will have one of the shape's point facing up.\n * @property {Array<number>} [displacement=[0,0]] Displacement of the shape\n * @property {import(\"./Stroke.js\").default} [stroke] Stroke style.\n * @property {number} [rotation=0] Rotation in radians (positive rotation clockwise).\n * @property {boolean} [rotateWithView=false] Whether to rotate the shape with the view.\n */\n/**\n * @typedef {Object} RenderOptions\n * @property {import(\"../colorlike.js\").ColorLike} [strokeStyle]\n * @property {number} strokeWidth\n * @property {number} size\n * @property {CanvasLineCap} lineCap\n * @property {Array<number>} lineDash\n * @property {number} lineDashOffset\n * @property {CanvasLineJoin} lineJoin\n * @property {number} miterLimit\n */\n/**\n * @classdesc\n * Set regular shape style for vector features. The resulting shape will be\n * a regular polygon when `radius` is provided, or a star when `radius1` and\n * `radius2` are provided.\n * @api\n */\nvar RegularShape = /** @class */ (function (_super) {\n    __extends(RegularShape, _super);\n    /**\n     * @param {Options} options Options.\n     */\n    function RegularShape(options) {\n        var _this = this;\n        /**\n         * @type {boolean}\n         */\n        var rotateWithView = options.rotateWithView !== undefined ?\n            options.rotateWithView : false;\n        _this = _super.call(this, {\n            opacity: 1,\n            rotateWithView: rotateWithView,\n            rotation: options.rotation !== undefined ? options.rotation : 0,\n            scale: 1,\n            displacement: options.displacement !== undefined ? options.displacement : [0, 0]\n        }) || this;\n        /**\n         * @private\n         * @type {HTMLCanvasElement}\n         */\n        _this.canvas_ = null;\n        /**\n         * @private\n         * @type {HTMLCanvasElement}\n         */\n        _this.hitDetectionCanvas_ = null;\n        /**\n         * @private\n         * @type {import(\"./Fill.js\").default}\n         */\n        _this.fill_ = options.fill !== undefined ? options.fill : null;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.origin_ = [0, 0];\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.points_ = options.points;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.radius_ = options.radius !== undefined ? options.radius : options.radius1;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.radius2_ = options.radius2;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.angle_ = options.angle !== undefined ? options.angle : 0;\n        /**\n         * @private\n         * @type {import(\"./Stroke.js\").default}\n         */\n        _this.stroke_ = options.stroke !== undefined ? options.stroke : null;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        _this.anchor_ = null;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.size_ = null;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.imageSize_ = null;\n        /**\n         * @private\n         * @type {import(\"../size.js\").Size}\n         */\n        _this.hitDetectionImageSize_ = null;\n        _this.render();\n        return _this;\n    }\n    /**\n     * Clones the style.\n     * @return {RegularShape} The cloned style.\n     * @api\n     */\n    RegularShape.prototype.clone = function () {\n        var style = new RegularShape({\n            fill: this.getFill() ? this.getFill().clone() : undefined,\n            points: this.getPoints(),\n            radius: this.getRadius(),\n            radius2: this.getRadius2(),\n            angle: this.getAngle(),\n            stroke: this.getStroke() ? this.getStroke().clone() : undefined,\n            rotation: this.getRotation(),\n            rotateWithView: this.getRotateWithView(),\n            displacement: this.getDisplacement().slice()\n        });\n        style.setOpacity(this.getOpacity());\n        style.setScale(this.getScale());\n        return style;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    RegularShape.prototype.getAnchor = function () {\n        return this.anchor_;\n    };\n    /**\n     * Get the angle used in generating the shape.\n     * @return {number} Shape's rotation in radians.\n     * @api\n     */\n    RegularShape.prototype.getAngle = function () {\n        return this.angle_;\n    };\n    /**\n     * Get the fill style for the shape.\n     * @return {import(\"./Fill.js\").default} Fill style.\n     * @api\n     */\n    RegularShape.prototype.getFill = function () {\n        return this.fill_;\n    };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.getHitDetectionImage = function (pixelRatio) {\n        return this.hitDetectionCanvas_;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    RegularShape.prototype.getImage = function (pixelRatio) {\n        return this.canvas_;\n    };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.getImageSize = function () {\n        return this.imageSize_;\n    };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.getHitDetectionImageSize = function () {\n        return this.hitDetectionImageSize_;\n    };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.getImageState = function () {\n        return ImageState.LOADED;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    RegularShape.prototype.getOrigin = function () {\n        return this.origin_;\n    };\n    /**\n     * Get the number of points for generating the shape.\n     * @return {number} Number of points for stars and regular polygons.\n     * @api\n     */\n    RegularShape.prototype.getPoints = function () {\n        return this.points_;\n    };\n    /**\n     * Get the (primary) radius for the shape.\n     * @return {number} Radius.\n     * @api\n     */\n    RegularShape.prototype.getRadius = function () {\n        return this.radius_;\n    };\n    /**\n     * Get the secondary radius for the shape.\n     * @return {number|undefined} Radius2.\n     * @api\n     */\n    RegularShape.prototype.getRadius2 = function () {\n        return this.radius2_;\n    };\n    /**\n     * @inheritDoc\n     * @api\n     */\n    RegularShape.prototype.getSize = function () {\n        return this.size_;\n    };\n    /**\n     * Get the stroke style for the shape.\n     * @return {import(\"./Stroke.js\").default} Stroke style.\n     * @api\n     */\n    RegularShape.prototype.getStroke = function () {\n        return this.stroke_;\n    };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.listenImageChange = function (listener) { };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.load = function () { };\n    /**\n     * @inheritDoc\n     */\n    RegularShape.prototype.unlistenImageChange = function (listener) { };\n    /**\n     * @protected\n     */\n    RegularShape.prototype.render = function () {\n        var lineCap = defaultLineCap;\n        var lineJoin = defaultLineJoin;\n        var miterLimit = 0;\n        var lineDash = null;\n        var lineDashOffset = 0;\n        var strokeStyle;\n        var strokeWidth = 0;\n        if (this.stroke_) {\n            strokeStyle = this.stroke_.getColor();\n            if (strokeStyle === null) {\n                strokeStyle = defaultStrokeStyle;\n            }\n            strokeStyle = asColorLike(strokeStyle);\n            strokeWidth = this.stroke_.getWidth();\n            if (strokeWidth === undefined) {\n                strokeWidth = defaultLineWidth;\n            }\n            lineDash = this.stroke_.getLineDash();\n            lineDashOffset = this.stroke_.getLineDashOffset();\n            lineJoin = this.stroke_.getLineJoin();\n            if (lineJoin === undefined) {\n                lineJoin = defaultLineJoin;\n            }\n            lineCap = this.stroke_.getLineCap();\n            if (lineCap === undefined) {\n                lineCap = defaultLineCap;\n            }\n            miterLimit = this.stroke_.getMiterLimit();\n            if (miterLimit === undefined) {\n                miterLimit = defaultMiterLimit;\n            }\n        }\n        var size = 2 * (this.radius_ + strokeWidth) + 1;\n        var renderOptions = {\n            strokeStyle: strokeStyle,\n            strokeWidth: strokeWidth,\n            size: size,\n            lineCap: lineCap,\n            lineDash: lineDash,\n            lineDashOffset: lineDashOffset,\n            lineJoin: lineJoin,\n            miterLimit: miterLimit\n        };\n        var context = createCanvasContext2D(size, size);\n        this.canvas_ = context.canvas;\n        // canvas.width and height are rounded to the closest integer\n        size = this.canvas_.width;\n        var imageSize = size;\n        var displacement = this.getDisplacement();\n        this.draw_(renderOptions, context, 0, 0);\n        this.createHitDetectionCanvas_(renderOptions);\n        this.anchor_ = [size / 2 - displacement[0], size / 2 + displacement[1]];\n        this.size_ = [size, size];\n        this.imageSize_ = [imageSize, imageSize];\n    };\n    /**\n     * @private\n     * @param {RenderOptions} renderOptions Render options.\n     * @param {CanvasRenderingContext2D} context The rendering context.\n     * @param {number} x The origin for the symbol (x).\n     * @param {number} y The origin for the symbol (y).\n     */\n    RegularShape.prototype.draw_ = function (renderOptions, context, x, y) {\n        var i, angle0, radiusC;\n        // reset transform\n        context.setTransform(1, 0, 0, 1, 0, 0);\n        // then move to (x, y)\n        context.translate(x, y);\n        context.beginPath();\n        var points = this.points_;\n        if (points === Infinity) {\n            context.arc(renderOptions.size / 2, renderOptions.size / 2, this.radius_, 0, 2 * Math.PI, true);\n        }\n        else {\n            var radius2 = (this.radius2_ !== undefined) ? this.radius2_\n                : this.radius_;\n            if (radius2 !== this.radius_) {\n                points = 2 * points;\n            }\n            for (i = 0; i <= points; i++) {\n                angle0 = i * 2 * Math.PI / points - Math.PI / 2 + this.angle_;\n                radiusC = i % 2 === 0 ? this.radius_ : radius2;\n                context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0), renderOptions.size / 2 + radiusC * Math.sin(angle0));\n            }\n        }\n        if (this.fill_) {\n            var color = this.fill_.getColor();\n            if (color === null) {\n                color = defaultFillStyle;\n            }\n            context.fillStyle = asColorLike(color);\n            context.fill();\n        }\n        if (this.stroke_) {\n            context.strokeStyle = renderOptions.strokeStyle;\n            context.lineWidth = renderOptions.strokeWidth;\n            if (context.setLineDash && renderOptions.lineDash) {\n                context.setLineDash(renderOptions.lineDash);\n                context.lineDashOffset = renderOptions.lineDashOffset;\n            }\n            context.lineCap = renderOptions.lineCap;\n            context.lineJoin = renderOptions.lineJoin;\n            context.miterLimit = renderOptions.miterLimit;\n            context.stroke();\n        }\n        context.closePath();\n    };\n    /**\n     * @private\n     * @param {RenderOptions} renderOptions Render options.\n     */\n    RegularShape.prototype.createHitDetectionCanvas_ = function (renderOptions) {\n        this.hitDetectionImageSize_ = [renderOptions.size, renderOptions.size];\n        this.hitDetectionCanvas_ = this.canvas_;\n        if (this.fill_) {\n            var color = this.fill_.getColor();\n            // determine if fill is transparent (or pattern or gradient)\n            var opacity = 0;\n            if (typeof color === 'string') {\n                color = asArray(color);\n            }\n            if (color === null) {\n                opacity = 1;\n            }\n            else if (Array.isArray(color)) {\n                opacity = color.length === 4 ? color[3] : 1;\n            }\n            if (opacity === 0) {\n                // if a transparent fill style is set, create an extra hit-detection image\n                // with a default fill style\n                var context = createCanvasContext2D(renderOptions.size, renderOptions.size);\n                this.hitDetectionCanvas_ = context.canvas;\n                this.drawHitDetectionCanvas_(renderOptions, context, 0, 0);\n            }\n        }\n    };\n    /**\n     * @private\n     * @param {RenderOptions} renderOptions Render options.\n     * @param {CanvasRenderingContext2D} context The context.\n     * @param {number} x The origin for the symbol (x).\n     * @param {number} y The origin for the symbol (y).\n     */\n    RegularShape.prototype.drawHitDetectionCanvas_ = function (renderOptions, context, x, y) {\n        // reset transform\n        context.setTransform(1, 0, 0, 1, 0, 0);\n        // then move to (x, y)\n        context.translate(x, y);\n        context.beginPath();\n        var points = this.points_;\n        if (points === Infinity) {\n            context.arc(renderOptions.size / 2, renderOptions.size / 2, this.radius_, 0, 2 * Math.PI, true);\n        }\n        else {\n            var radius2 = (this.radius2_ !== undefined) ? this.radius2_\n                : this.radius_;\n            if (radius2 !== this.radius_) {\n                points = 2 * points;\n            }\n            var i = void 0, radiusC = void 0, angle0 = void 0;\n            for (i = 0; i <= points; i++) {\n                angle0 = i * 2 * Math.PI / points - Math.PI / 2 + this.angle_;\n                radiusC = i % 2 === 0 ? this.radius_ : radius2;\n                context.lineTo(renderOptions.size / 2 + radiusC * Math.cos(angle0), renderOptions.size / 2 + radiusC * Math.sin(angle0));\n            }\n        }\n        context.fillStyle = defaultFillStyle;\n        context.fill();\n        if (this.stroke_) {\n            context.strokeStyle = renderOptions.strokeStyle;\n            context.lineWidth = renderOptions.strokeWidth;\n            if (renderOptions.lineDash) {\n                context.setLineDash(renderOptions.lineDash);\n                context.lineDashOffset = renderOptions.lineDashOffset;\n            }\n            context.stroke();\n        }\n        context.closePath();\n    };\n    return RegularShape;\n}(ImageStyle));\nexport default RegularShape;\n//# sourceMappingURL=RegularShape.js.map","/**\n * @module ol/style/Circle\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport RegularShape from './RegularShape.js';\n/**\n * @typedef {Object} Options\n * @property {import(\"./Fill.js\").default} [fill] Fill style.\n * @property {number} radius Circle radius.\n * @property {import(\"./Stroke.js\").default} [stroke] Stroke style.\n * @property {Array<number>} [displacement=[0,0]] displacement\n */\n/**\n * @classdesc\n * Set circle style for vector features.\n * @api\n */\nvar CircleStyle = /** @class */ (function (_super) {\n    __extends(CircleStyle, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function CircleStyle(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        _this = _super.call(this, {\n            points: Infinity,\n            fill: options.fill,\n            radius: options.radius,\n            stroke: options.stroke,\n            displacement: options.displacement !== undefined ? options.displacement : [0, 0]\n        }) || this;\n        return _this;\n    }\n    /**\n    * Clones the style.\n    * @return {CircleStyle} The cloned style.\n    * @override\n    * @api\n    */\n    CircleStyle.prototype.clone = function () {\n        var style = new CircleStyle({\n            fill: this.getFill() ? this.getFill().clone() : undefined,\n            stroke: this.getStroke() ? this.getStroke().clone() : undefined,\n            radius: this.getRadius(),\n            displacement: this.getDisplacement().slice()\n        });\n        style.setOpacity(this.getOpacity());\n        style.setScale(this.getScale());\n        return style;\n    };\n    /**\n     * Set the circle radius.\n     *\n     * @param {number} radius Circle radius.\n     * @api\n     */\n    CircleStyle.prototype.setRadius = function (radius) {\n        this.radius_ = radius;\n        this.render();\n    };\n    return CircleStyle;\n}(RegularShape));\nexport default CircleStyle;\n//# sourceMappingURL=Circle.js.map","/**\n * @module ol/style/Fill\n */\n/**\n * @typedef {Object} Options\n * @property {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} [color=null] A color, gradient or pattern.\n * See {@link module:ol/color~Color} and {@link module:ol/colorlike~ColorLike} for possible formats.\n * Default null; if null, the Canvas/renderer default black will be used.\n */\n/**\n * @classdesc\n * Set fill style for vector features.\n * @api\n */\nvar Fill = /** @class */ (function () {\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function Fill(opt_options) {\n        var options = opt_options || {};\n        /**\n         * @private\n         * @type {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike}\n         */\n        this.color_ = options.color !== undefined ? options.color : null;\n    }\n    /**\n     * Clones the style. The color is not cloned if it is an {@link module:ol/colorlike~ColorLike}.\n     * @return {Fill} The cloned style.\n     * @api\n     */\n    Fill.prototype.clone = function () {\n        var color = this.getColor();\n        return new Fill({\n            color: Array.isArray(color) ? color.slice() : color || undefined\n        });\n    };\n    /**\n     * Get the fill color.\n     * @return {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} Color.\n     * @api\n     */\n    Fill.prototype.getColor = function () {\n        return this.color_;\n    };\n    /**\n     * Set the color.\n     *\n     * @param {import(\"../color.js\").Color|import(\"../colorlike.js\").ColorLike} color Color.\n     * @api\n     */\n    Fill.prototype.setColor = function (color) {\n        this.color_ = color;\n    };\n    return Fill;\n}());\nexport default Fill;\n//# sourceMappingURL=Fill.js.map","/**\n * @module ol/style/Style\n */\nimport { assert } from '../asserts.js';\nimport GeometryType from '../geom/GeometryType.js';\nimport CircleStyle from './Circle.js';\nimport Fill from './Fill.js';\nimport Stroke from './Stroke.js';\n/**\n * A function that takes an {@link module:ol/Feature} and a `{number}`\n * representing the view's resolution. The function should return a\n * {@link module:ol/style/Style} or an array of them. This way e.g. a\n * vector layer can be styled. If the function returns `undefined`, the\n * feature will not be rendered.\n *\n * @typedef {function(import(\"../Feature.js\").FeatureLike, number):(Style|Array<Style>|void)} StyleFunction\n */\n/**\n * A {@link Style}, an array of {@link Style}, or a {@link StyleFunction}.\n * @typedef {Style|Array<Style>|StyleFunction} StyleLike\n */\n/**\n * A function that takes an {@link module:ol/Feature} as argument and returns an\n * {@link module:ol/geom/Geometry} that will be rendered and styled for the feature.\n *\n * @typedef {function(import(\"../Feature.js\").FeatureLike):\n *     (import(\"../geom/Geometry.js\").default|import(\"../render/Feature.js\").default|undefined)} GeometryFunction\n */\n/**\n * Custom renderer function. Takes two arguments:\n *\n * 1. The pixel coordinates of the geometry in GeoJSON notation.\n * 2. The {@link module:ol/render~State} of the layer renderer.\n *\n * @typedef {function((import(\"../coordinate.js\").Coordinate|Array<import(\"../coordinate.js\").Coordinate>|Array<Array<import(\"../coordinate.js\").Coordinate>>),import(\"../render.js\").State): void}\n * RenderFunction\n */\n/**\n * @typedef {Object} Options\n * @property {string|import(\"../geom/Geometry.js\").default|GeometryFunction} [geometry] Feature property or geometry\n * or function returning a geometry to render for this style.\n * @property {import(\"./Fill.js\").default} [fill] Fill style.\n * @property {import(\"./Image.js\").default} [image] Image style.\n * @property {RenderFunction} [renderer] Custom renderer. When configured, `fill`, `stroke` and `image` will be\n * ignored, and the provided function will be called with each render frame for each geometry.\n * @property {import(\"./Stroke.js\").default} [stroke] Stroke style.\n * @property {import(\"./Text.js\").default} [text] Text style.\n * @property {number} [zIndex] Z index.\n */\n/**\n * @classdesc\n * Container for vector feature rendering styles. Any changes made to the style\n * or its children through `set*()` methods will not take effect until the\n * feature or layer that uses the style is re-rendered.\n *\n * ## Feature styles\n *\n * If no style is defined, the following default style is used:\n * ```js\n *  import {Fill, Stroke, Circle, Style} from 'ol/style';\n *\n *  var fill = new Fill({\n *    color: 'rgba(255,255,255,0.4)'\n *  });\n *  var stroke = new Stroke({\n *    color: '#3399CC',\n *    width: 1.25\n *  });\n *  var styles = [\n *    new Style({\n *      image: new Circle({\n *        fill: fill,\n *        stroke: stroke,\n *        radius: 5\n *      }),\n *      fill: fill,\n *      stroke: stroke\n *    })\n *  ];\n * ```\n *\n * A separate editing style has the following defaults:\n * ```js\n *  import {Fill, Stroke, Circle, Style} from 'ol/style';\n *  import GeometryType from 'ol/geom/GeometryType';\n *\n *  var white = [255, 255, 255, 1];\n *  var blue = [0, 153, 255, 1];\n *  var width = 3;\n *  styles[GeometryType.POLYGON] = [\n *    new Style({\n *      fill: new Fill({\n *        color: [255, 255, 255, 0.5]\n *      })\n *    })\n *  ];\n *  styles[GeometryType.MULTI_POLYGON] =\n *      styles[GeometryType.POLYGON];\n *  styles[GeometryType.LINE_STRING] = [\n *    new Style({\n *      stroke: new Stroke({\n *        color: white,\n *        width: width + 2\n *      })\n *    }),\n *    new Style({\n *      stroke: new Stroke({\n *        color: blue,\n *        width: width\n *      })\n *    })\n *  ];\n *  styles[GeometryType.MULTI_LINE_STRING] =\n *      styles[GeometryType.LINE_STRING];\n *  styles[GeometryType.POINT] = [\n *    new Style({\n *      image: new Circle({\n *        radius: width * 2,\n *        fill: new Fill({\n *          color: blue\n *        }),\n *        stroke: new Stroke({\n *          color: white,\n *          width: width / 2\n *        })\n *      }),\n *      zIndex: Infinity\n *    })\n *  ];\n *  styles[GeometryType.MULTI_POINT] =\n *      styles[GeometryType.POINT];\n *  styles[GeometryType.GEOMETRY_COLLECTION] =\n *      styles[GeometryType.POLYGON].concat(\n *          styles[GeometryType.LINE_STRING],\n *          styles[GeometryType.POINT]\n *      );\n * ```\n *\n * @api\n */\nvar Style = /** @class */ (function () {\n    /**\n     * @param {Options=} opt_options Style options.\n     */\n    function Style(opt_options) {\n        var options = opt_options || {};\n        /**\n         * @private\n         * @type {string|import(\"../geom/Geometry.js\").default|GeometryFunction}\n         */\n        this.geometry_ = null;\n        /**\n         * @private\n         * @type {!GeometryFunction}\n         */\n        this.geometryFunction_ = defaultGeometryFunction;\n        if (options.geometry !== undefined) {\n            this.setGeometry(options.geometry);\n        }\n        /**\n         * @private\n         * @type {import(\"./Fill.js\").default}\n         */\n        this.fill_ = options.fill !== undefined ? options.fill : null;\n        /**\n           * @private\n           * @type {import(\"./Image.js\").default}\n           */\n        this.image_ = options.image !== undefined ? options.image : null;\n        /**\n         * @private\n         * @type {RenderFunction|null}\n         */\n        this.renderer_ = options.renderer !== undefined ? options.renderer : null;\n        /**\n         * @private\n         * @type {import(\"./Stroke.js\").default}\n         */\n        this.stroke_ = options.stroke !== undefined ? options.stroke : null;\n        /**\n         * @private\n         * @type {import(\"./Text.js\").default}\n         */\n        this.text_ = options.text !== undefined ? options.text : null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.zIndex_ = options.zIndex;\n    }\n    /**\n     * Clones the style.\n     * @return {Style} The cloned style.\n     * @api\n     */\n    Style.prototype.clone = function () {\n        var geometry = this.getGeometry();\n        if (geometry && typeof geometry === 'object') {\n            geometry = /** @type {import(\"../geom/Geometry.js\").default} */ (geometry).clone();\n        }\n        return new Style({\n            geometry: geometry,\n            fill: this.getFill() ? this.getFill().clone() : undefined,\n            image: this.getImage() ? this.getImage().clone() : undefined,\n            stroke: this.getStroke() ? this.getStroke().clone() : undefined,\n            text: this.getText() ? this.getText().clone() : undefined,\n            zIndex: this.getZIndex()\n        });\n    };\n    /**\n     * Get the custom renderer function that was configured with\n     * {@link #setRenderer} or the `renderer` constructor option.\n     * @return {RenderFunction|null} Custom renderer function.\n     * @api\n     */\n    Style.prototype.getRenderer = function () {\n        return this.renderer_;\n    };\n    /**\n     * Sets a custom renderer function for this style. When set, `fill`, `stroke`\n     * and `image` options of the style will be ignored.\n     * @param {RenderFunction|null} renderer Custom renderer function.\n     * @api\n     */\n    Style.prototype.setRenderer = function (renderer) {\n        this.renderer_ = renderer;\n    };\n    /**\n     * Get the geometry to be rendered.\n     * @return {string|import(\"../geom/Geometry.js\").default|GeometryFunction}\n     * Feature property or geometry or function that returns the geometry that will\n     * be rendered with this style.\n     * @api\n     */\n    Style.prototype.getGeometry = function () {\n        return this.geometry_;\n    };\n    /**\n     * Get the function used to generate a geometry for rendering.\n     * @return {!GeometryFunction} Function that is called with a feature\n     * and returns the geometry to render instead of the feature's geometry.\n     * @api\n     */\n    Style.prototype.getGeometryFunction = function () {\n        return this.geometryFunction_;\n    };\n    /**\n     * Get the fill style.\n     * @return {import(\"./Fill.js\").default} Fill style.\n     * @api\n     */\n    Style.prototype.getFill = function () {\n        return this.fill_;\n    };\n    /**\n     * Set the fill style.\n     * @param {import(\"./Fill.js\").default} fill Fill style.\n     * @api\n     */\n    Style.prototype.setFill = function (fill) {\n        this.fill_ = fill;\n    };\n    /**\n     * Get the image style.\n     * @return {import(\"./Image.js\").default} Image style.\n     * @api\n     */\n    Style.prototype.getImage = function () {\n        return this.image_;\n    };\n    /**\n     * Set the image style.\n     * @param {import(\"./Image.js\").default} image Image style.\n     * @api\n     */\n    Style.prototype.setImage = function (image) {\n        this.image_ = image;\n    };\n    /**\n     * Get the stroke style.\n     * @return {import(\"./Stroke.js\").default} Stroke style.\n     * @api\n     */\n    Style.prototype.getStroke = function () {\n        return this.stroke_;\n    };\n    /**\n     * Set the stroke style.\n     * @param {import(\"./Stroke.js\").default} stroke Stroke style.\n     * @api\n     */\n    Style.prototype.setStroke = function (stroke) {\n        this.stroke_ = stroke;\n    };\n    /**\n     * Get the text style.\n     * @return {import(\"./Text.js\").default} Text style.\n     * @api\n     */\n    Style.prototype.getText = function () {\n        return this.text_;\n    };\n    /**\n     * Set the text style.\n     * @param {import(\"./Text.js\").default} text Text style.\n     * @api\n     */\n    Style.prototype.setText = function (text) {\n        this.text_ = text;\n    };\n    /**\n     * Get the z-index for the style.\n     * @return {number|undefined} ZIndex.\n     * @api\n     */\n    Style.prototype.getZIndex = function () {\n        return this.zIndex_;\n    };\n    /**\n     * Set a geometry that is rendered instead of the feature's geometry.\n     *\n     * @param {string|import(\"../geom/Geometry.js\").default|GeometryFunction} geometry\n     *     Feature property or geometry or function returning a geometry to render\n     *     for this style.\n     * @api\n     */\n    Style.prototype.setGeometry = function (geometry) {\n        if (typeof geometry === 'function') {\n            this.geometryFunction_ = geometry;\n        }\n        else if (typeof geometry === 'string') {\n            this.geometryFunction_ = function (feature) {\n                return (\n                /** @type {import(\"../geom/Geometry.js\").default} */ (feature.get(geometry)));\n            };\n        }\n        else if (!geometry) {\n            this.geometryFunction_ = defaultGeometryFunction;\n        }\n        else if (geometry !== undefined) {\n            this.geometryFunction_ = function () {\n                return (\n                /** @type {import(\"../geom/Geometry.js\").default} */ (geometry));\n            };\n        }\n        this.geometry_ = geometry;\n    };\n    /**\n     * Set the z-index.\n     *\n     * @param {number|undefined} zIndex ZIndex.\n     * @api\n     */\n    Style.prototype.setZIndex = function (zIndex) {\n        this.zIndex_ = zIndex;\n    };\n    return Style;\n}());\n/**\n * Convert the provided object into a style function.  Functions passed through\n * unchanged.  Arrays of Style or single style objects wrapped in a\n * new style function.\n * @param {StyleFunction|Array<Style>|Style} obj\n *     A style function, a single style, or an array of styles.\n * @return {StyleFunction} A style function.\n */\nexport function toFunction(obj) {\n    var styleFunction;\n    if (typeof obj === 'function') {\n        styleFunction = obj;\n    }\n    else {\n        /**\n         * @type {Array<Style>}\n         */\n        var styles_1;\n        if (Array.isArray(obj)) {\n            styles_1 = obj;\n        }\n        else {\n            assert(typeof /** @type {?} */ (obj).getZIndex === 'function', 41); // Expected an `Style` or an array of `Style`\n            var style = /** @type {Style} */ (obj);\n            styles_1 = [style];\n        }\n        styleFunction = function () {\n            return styles_1;\n        };\n    }\n    return styleFunction;\n}\n/**\n * @type {Array<Style>}\n */\nvar defaultStyles = null;\n/**\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature.\n * @param {number} resolution Resolution.\n * @return {Array<Style>} Style.\n */\nexport function createDefaultStyle(feature, resolution) {\n    // We don't use an immediately-invoked function\n    // and a closure so we don't get an error at script evaluation time in\n    // browsers that do not support Canvas. (import(\"./Circle.js\").CircleStyle does\n    // canvas.getContext('2d') at construction time, which will cause an.error\n    // in such browsers.)\n    if (!defaultStyles) {\n        var fill = new Fill({\n            color: 'rgba(255,255,255,0.4)'\n        });\n        var stroke = new Stroke({\n            color: '#3399CC',\n            width: 1.25\n        });\n        defaultStyles = [\n            new Style({\n                image: new CircleStyle({\n                    fill: fill,\n                    stroke: stroke,\n                    radius: 5\n                }),\n                fill: fill,\n                stroke: stroke\n            })\n        ];\n    }\n    return defaultStyles;\n}\n/**\n * Default styles for editing features.\n * @return {Object<import(\"../geom/GeometryType.js\").default, Array<Style>>} Styles\n */\nexport function createEditingStyle() {\n    /** @type {Object<import(\"../geom/GeometryType.js\").default, Array<Style>>} */\n    var styles = {};\n    var white = [255, 255, 255, 1];\n    var blue = [0, 153, 255, 1];\n    var width = 3;\n    styles[GeometryType.POLYGON] = [\n        new Style({\n            fill: new Fill({\n                color: [255, 255, 255, 0.5]\n            })\n        })\n    ];\n    styles[GeometryType.MULTI_POLYGON] =\n        styles[GeometryType.POLYGON];\n    styles[GeometryType.LINE_STRING] = [\n        new Style({\n            stroke: new Stroke({\n                color: white,\n                width: width + 2\n            })\n        }),\n        new Style({\n            stroke: new Stroke({\n                color: blue,\n                width: width\n            })\n        })\n    ];\n    styles[GeometryType.MULTI_LINE_STRING] =\n        styles[GeometryType.LINE_STRING];\n    styles[GeometryType.CIRCLE] =\n        styles[GeometryType.POLYGON].concat(styles[GeometryType.LINE_STRING]);\n    styles[GeometryType.POINT] = [\n        new Style({\n            image: new CircleStyle({\n                radius: width * 2,\n                fill: new Fill({\n                    color: blue\n                }),\n                stroke: new Stroke({\n                    color: white,\n                    width: width / 2\n                })\n            }),\n            zIndex: Infinity\n        })\n    ];\n    styles[GeometryType.MULTI_POINT] =\n        styles[GeometryType.POINT];\n    styles[GeometryType.GEOMETRY_COLLECTION] =\n        styles[GeometryType.POLYGON].concat(styles[GeometryType.LINE_STRING], styles[GeometryType.POINT]);\n    return styles;\n}\n/**\n * Function that is called with a feature and returns its default geometry.\n * @param {import(\"../Feature.js\").FeatureLike} feature Feature to get the geometry for.\n * @return {import(\"../geom/Geometry.js\").default|import(\"../render/Feature.js\").default|undefined} Geometry to render.\n */\nfunction defaultGeometryFunction(feature) {\n    return feature.getGeometry();\n}\nexport default Style;\n//# sourceMappingURL=Style.js.map","/**\n * @module ol/layer/TileProperty\n */\n/**\n * @enum {string}\n */\nexport default {\n    PRELOAD: 'preload',\n    USE_INTERIM_TILES_ON_ERROR: 'useInterimTilesOnError'\n};\n//# sourceMappingURL=TileProperty.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/BaseTile\n */\nimport Layer from './Layer.js';\nimport TileProperty from './TileProperty.js';\nimport { assign } from '../obj.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-layer'] A CSS class name to set to the layer element.\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering.  The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering.  At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n * @property {number} [preload=0] Preload. Load low-resolution tiles up to `preload` levels. `0`\n * means no preloading.\n * @property {import(\"../source/Tile.js\").default} [source] Source for this layer.\n * @property {import(\"../PluggableMap.js\").default} [map] Sets the layer as overlay on a map. The map will not manage\n * this layer in its layers collection, and the layer will be rendered on top. This is useful for\n * temporary layers. The standard way to add a layer to a map and have it managed by the map is to\n * use {@link module:ol/Map#addLayer}.\n * @property {boolean} [useInterimTilesOnError=true] Use interim tiles on error.\n */\n/**\n * @classdesc\n * For layer sources that provide pre-rendered, tiled images in grids that are\n * organized by zoom levels for specific resolutions.\n * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}\n * property on the layer object; for example, setting `title: 'My Title'` in the\n * options means that `title` is observable, and has get/set accessors.\n *\n * @extends {Layer<import(\"../source/Tile.js\").default>}\n * @api\n */\nvar BaseTileLayer = /** @class */ (function (_super) {\n    __extends(BaseTileLayer, _super);\n    /**\n     * @param {Options=} opt_options Tile layer options.\n     */\n    function BaseTileLayer(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var baseOptions = assign({}, options);\n        delete baseOptions.preload;\n        delete baseOptions.useInterimTilesOnError;\n        _this = _super.call(this, baseOptions) || this;\n        _this.setPreload(options.preload !== undefined ? options.preload : 0);\n        _this.setUseInterimTilesOnError(options.useInterimTilesOnError !== undefined ?\n            options.useInterimTilesOnError : true);\n        return _this;\n    }\n    /**\n    * Return the level as number to which we will preload tiles up to.\n    * @return {number} The level to preload tiles up to.\n    * @observable\n    * @api\n    */\n    BaseTileLayer.prototype.getPreload = function () {\n        return /** @type {number} */ (this.get(TileProperty.PRELOAD));\n    };\n    /**\n    * Set the level as number to which we will preload tiles up to.\n    * @param {number} preload The level to preload tiles up to.\n    * @observable\n    * @api\n    */\n    BaseTileLayer.prototype.setPreload = function (preload) {\n        this.set(TileProperty.PRELOAD, preload);\n    };\n    /**\n    * Whether we use interim tiles on error.\n    * @return {boolean} Use interim tiles on error.\n    * @observable\n    * @api\n    */\n    BaseTileLayer.prototype.getUseInterimTilesOnError = function () {\n        return /** @type {boolean} */ (this.get(TileProperty.USE_INTERIM_TILES_ON_ERROR));\n    };\n    /**\n    * Set whether we use interim tiles on error.\n    * @param {boolean} useInterimTilesOnError Use interim tiles on error.\n    * @observable\n    * @api\n    */\n    BaseTileLayer.prototype.setUseInterimTilesOnError = function (useInterimTilesOnError) {\n        this.set(TileProperty.USE_INTERIM_TILES_ON_ERROR, useInterimTilesOnError);\n    };\n    return BaseTileLayer;\n}(Layer));\nexport default BaseTileLayer;\n//# sourceMappingURL=BaseTile.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/Layer\n */\nimport { abstract } from '../util.js';\nimport ImageState from '../ImageState.js';\nimport Observable from '../Observable.js';\nimport EventType from '../events/EventType.js';\nimport SourceState from '../source/State.js';\n/**\n * @template {import(\"../layer/Layer.js\").default} LayerType\n */\nvar LayerRenderer = /** @class */ (function (_super) {\n    __extends(LayerRenderer, _super);\n    /**\n     * @param {LayerType} layer Layer.\n     */\n    function LayerRenderer(layer) {\n        var _this = _super.call(this) || this;\n        /** @private */\n        _this.boundHandleImageChange_ = _this.handleImageChange_.bind(_this);\n        /**\n         * @private\n         * @type {LayerType}\n         */\n        _this.layer_ = layer;\n        return _this;\n    }\n    /**\n     * Asynchronous layer level hit detection.\n     * @param {import(\"../pixel.js\").Pixel} pixel Pixel.\n     * @return {Promise<Array<import(\"../Feature\").default>>} Promise that resolves with\n     * an array of features.\n     */\n    LayerRenderer.prototype.getFeatures = function (pixel) {\n        return abstract();\n    };\n    /**\n     * Determine whether render should be called.\n     * @abstract\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @return {boolean} Layer is ready to be rendered.\n     */\n    LayerRenderer.prototype.prepareFrame = function (frameState) {\n        return abstract();\n    };\n    /**\n     * Render the layer.\n     * @abstract\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {HTMLElement} target Target that may be used to render content to.\n     * @return {HTMLElement} The rendered element.\n     */\n    LayerRenderer.prototype.renderFrame = function (frameState, target) {\n        return abstract();\n    };\n    /**\n     * @param {Object<number, Object<string, import(\"../Tile.js\").default>>} tiles Lookup of loaded tiles by zoom level.\n     * @param {number} zoom Zoom level.\n     * @param {import(\"../Tile.js\").default} tile Tile.\n     */\n    LayerRenderer.prototype.loadedTileCallback = function (tiles, zoom, tile) {\n        if (!tiles[zoom]) {\n            tiles[zoom] = {};\n        }\n        tiles[zoom][tile.tileCoord.toString()] = tile;\n    };\n    /**\n     * Create a function that adds loaded tiles to the tile lookup.\n     * @param {import(\"../source/Tile.js\").default} source Tile source.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection of the tiles.\n     * @param {Object<number, Object<string, import(\"../Tile.js\").default>>} tiles Lookup of loaded tiles by zoom level.\n     * @return {function(number, import(\"../TileRange.js\").default):boolean} A function that can be\n     *     called with a zoom level and a tile range to add loaded tiles to the lookup.\n     * @protected\n     */\n    LayerRenderer.prototype.createLoadedTileFinder = function (source, projection, tiles) {\n        return (\n        /**\n         * @param {number} zoom Zoom level.\n         * @param {import(\"../TileRange.js\").default} tileRange Tile range.\n         * @return {boolean} The tile range is fully loaded.\n         * @this {LayerRenderer}\n         */\n        function (zoom, tileRange) {\n            var callback = this.loadedTileCallback.bind(this, tiles, zoom);\n            return source.forEachLoadedTile(projection, zoom, tileRange, callback);\n        }).bind(this);\n    };\n    /**\n     * @abstract\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @param {function(import(\"../Feature.js\").FeatureLike, import(\"../layer/Layer.js\").default): T} callback Feature callback.\n     * @param {Array<import(\"../Feature.js\").FeatureLike>} declutteredFeatures Decluttered features.\n     * @return {T|void} Callback result.\n     * @template T\n     */\n    LayerRenderer.prototype.forEachFeatureAtCoordinate = function (coordinate, frameState, hitTolerance, callback, declutteredFeatures) { };\n    /**\n     * @abstract\n     * @param {import(\"../pixel.js\").Pixel} pixel Pixel.\n     * @param {import(\"../PluggableMap.js\").FrameState} frameState FrameState.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @return {Uint8ClampedArray|Uint8Array} The result.  If there is no data at the pixel\n     *    location, null will be returned.  If there is data, but pixel values cannot be\n     *    returned, and empty array will be returned.\n     */\n    LayerRenderer.prototype.getDataAtPixel = function (pixel, frameState, hitTolerance) {\n        return abstract();\n    };\n    /**\n     * @return {LayerType} Layer.\n     */\n    LayerRenderer.prototype.getLayer = function () {\n        return this.layer_;\n    };\n    /**\n     * Perform action necessary to get the layer rendered after new fonts have loaded\n     * @abstract\n     */\n    LayerRenderer.prototype.handleFontsChanged = function () { };\n    /**\n     * Handle changes in image state.\n     * @param {import(\"../events/Event.js\").default} event Image change event.\n     * @private\n     */\n    LayerRenderer.prototype.handleImageChange_ = function (event) {\n        var image = /** @type {import(\"../Image.js\").default} */ (event.target);\n        if (image.getState() === ImageState.LOADED) {\n            this.renderIfReadyAndVisible();\n        }\n    };\n    /**\n     * Load the image if not already loaded, and register the image change\n     * listener if needed.\n     * @param {import(\"../ImageBase.js\").default} image Image.\n     * @return {boolean} `true` if the image is already loaded, `false` otherwise.\n     * @protected\n     */\n    LayerRenderer.prototype.loadImage = function (image) {\n        var imageState = image.getState();\n        if (imageState != ImageState.LOADED && imageState != ImageState.ERROR) {\n            image.addEventListener(EventType.CHANGE, this.boundHandleImageChange_);\n        }\n        if (imageState == ImageState.IDLE) {\n            image.load();\n            imageState = image.getState();\n        }\n        return imageState == ImageState.LOADED;\n    };\n    /**\n     * @protected\n     */\n    LayerRenderer.prototype.renderIfReadyAndVisible = function () {\n        var layer = this.getLayer();\n        if (layer.getVisible() && layer.getSourceState() == SourceState.READY) {\n            layer.changed();\n        }\n    };\n    return LayerRenderer;\n}(Observable));\nexport default LayerRenderer;\n//# sourceMappingURL=Layer.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/canvas/Layer\n */\nimport { getBottomLeft, getBottomRight, getTopLeft, getTopRight } from '../../extent.js';\nimport { createCanvasContext2D } from '../../dom.js';\nimport RenderEvent from '../../render/Event.js';\nimport RenderEventType from '../../render/EventType.js';\nimport { rotateAtOffset } from '../../render/canvas.js';\nimport LayerRenderer from '../Layer.js';\nimport { create as createTransform, apply as applyTransform, compose as composeTransform } from '../../transform.js';\n/**\n * @abstract\n * @template {import(\"../../layer/Layer.js\").default} LayerType\n */\nvar CanvasLayerRenderer = /** @class */ (function (_super) {\n    __extends(CanvasLayerRenderer, _super);\n    /**\n     * @param {LayerType} layer Layer.\n     */\n    function CanvasLayerRenderer(layer) {\n        var _this = _super.call(this, layer) || this;\n        /**\n         * @protected\n         * @type {HTMLElement}\n         */\n        _this.container = null;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.renderedResolution;\n        /**\n         * A temporary transform.  The values in this transform should only be used in a\n         * function that sets the values.\n         * @private\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        _this.tempTransform_ = createTransform();\n        /**\n         * The transform for rendered pixels to viewport CSS pixels.  This transform must\n         * be set when rendering a frame and may be used by other functions after rendering.\n         * @protected\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        _this.pixelTransform = createTransform();\n        /**\n         * The transform for viewport CSS pixels to rendered pixels.  This transform must\n         * be set when rendering a frame and may be used by other functions after rendering.\n         * @protected\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        _this.inversePixelTransform = createTransform();\n        /**\n         * @protected\n         * @type {CanvasRenderingContext2D}\n         */\n        _this.context = null;\n        /**\n         * @type {boolean}\n         */\n        _this.containerReused = false;\n        return _this;\n    }\n    /**\n     * Get a rendering container from an existing target, if compatible.\n     * @param {HTMLElement} target Potential render target.\n     * @param {string} transform CSS Transform.\n     * @param {number} opacity Opacity.\n     */\n    CanvasLayerRenderer.prototype.useContainer = function (target, transform, opacity) {\n        var layerClassName = this.getLayer().getClassName();\n        var container, context;\n        if (target && target.style.opacity === '' && target.className === layerClassName) {\n            var canvas = target.firstElementChild;\n            if (canvas instanceof HTMLCanvasElement) {\n                context = canvas.getContext('2d');\n            }\n        }\n        if (context && context.canvas.style.transform === transform) {\n            // Container of the previous layer renderer can be used.\n            this.container = target;\n            this.context = context;\n            this.containerReused = true;\n        }\n        else if (this.containerReused) {\n            // Previously reused container cannot be used any more.\n            this.container = null;\n            this.context = null;\n            this.containerReused = false;\n        }\n        if (!this.container) {\n            container = document.createElement('div');\n            container.className = layerClassName;\n            var style = container.style;\n            style.position = 'absolute';\n            style.width = '100%';\n            style.height = '100%';\n            context = createCanvasContext2D();\n            var canvas = context.canvas;\n            container.appendChild(canvas);\n            style = canvas.style;\n            style.position = 'absolute';\n            style.left = '0';\n            style.transformOrigin = 'top left';\n            this.container = container;\n            this.context = context;\n        }\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {import(\"../../extent.js\").Extent} extent Clip extent.\n     * @protected\n     */\n    CanvasLayerRenderer.prototype.clip = function (context, frameState, extent) {\n        var pixelRatio = frameState.pixelRatio;\n        var halfWidth = (frameState.size[0] * pixelRatio) / 2;\n        var halfHeight = (frameState.size[1] * pixelRatio) / 2;\n        var rotation = frameState.viewState.rotation;\n        var topLeft = getTopLeft(extent);\n        var topRight = getTopRight(extent);\n        var bottomRight = getBottomRight(extent);\n        var bottomLeft = getBottomLeft(extent);\n        applyTransform(frameState.coordinateToPixelTransform, topLeft);\n        applyTransform(frameState.coordinateToPixelTransform, topRight);\n        applyTransform(frameState.coordinateToPixelTransform, bottomRight);\n        applyTransform(frameState.coordinateToPixelTransform, bottomLeft);\n        context.save();\n        rotateAtOffset(context, -rotation, halfWidth, halfHeight);\n        context.beginPath();\n        context.moveTo(topLeft[0] * pixelRatio, topLeft[1] * pixelRatio);\n        context.lineTo(topRight[0] * pixelRatio, topRight[1] * pixelRatio);\n        context.lineTo(bottomRight[0] * pixelRatio, bottomRight[1] * pixelRatio);\n        context.lineTo(bottomLeft[0] * pixelRatio, bottomLeft[1] * pixelRatio);\n        context.clip();\n        rotateAtOffset(context, rotation, halfWidth, halfHeight);\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {import(\"../../extent.js\").Extent} extent Clip extent.\n     * @protected\n     */\n    CanvasLayerRenderer.prototype.clipUnrotated = function (context, frameState, extent) {\n        var topLeft = getTopLeft(extent);\n        var topRight = getTopRight(extent);\n        var bottomRight = getBottomRight(extent);\n        var bottomLeft = getBottomLeft(extent);\n        applyTransform(frameState.coordinateToPixelTransform, topLeft);\n        applyTransform(frameState.coordinateToPixelTransform, topRight);\n        applyTransform(frameState.coordinateToPixelTransform, bottomRight);\n        applyTransform(frameState.coordinateToPixelTransform, bottomLeft);\n        var inverted = this.inversePixelTransform;\n        applyTransform(inverted, topLeft);\n        applyTransform(inverted, topRight);\n        applyTransform(inverted, bottomRight);\n        applyTransform(inverted, bottomLeft);\n        context.save();\n        context.beginPath();\n        context.moveTo(Math.round(topLeft[0]), Math.round(topLeft[1]));\n        context.lineTo(Math.round(topRight[0]), Math.round(topRight[1]));\n        context.lineTo(Math.round(bottomRight[0]), Math.round(bottomRight[1]));\n        context.lineTo(Math.round(bottomLeft[0]), Math.round(bottomLeft[1]));\n        context.clip();\n    };\n    /**\n     * @param {import(\"../../render/EventType.js\").default} type Event type.\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @private\n     */\n    CanvasLayerRenderer.prototype.dispatchRenderEvent_ = function (type, context, frameState) {\n        var layer = this.getLayer();\n        if (layer.hasListener(type)) {\n            var event_1 = new RenderEvent(type, this.inversePixelTransform, frameState, context);\n            layer.dispatchEvent(event_1);\n        }\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @protected\n     */\n    CanvasLayerRenderer.prototype.preRender = function (context, frameState) {\n        this.dispatchRenderEvent_(RenderEventType.PRERENDER, context, frameState);\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @protected\n     */\n    CanvasLayerRenderer.prototype.postRender = function (context, frameState) {\n        this.dispatchRenderEvent_(RenderEventType.POSTRENDER, context, frameState);\n    };\n    /**\n     * Creates a transform for rendering to an element that will be rotated after rendering.\n     * @param {import(\"../../coordinate.js\").Coordinate} center Center.\n     * @param {number} resolution Resolution.\n     * @param {number} rotation Rotation.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {number} width Width of the rendered element (in pixels).\n     * @param {number} height Height of the rendered element (in pixels).\n     * @param {number} offsetX Offset on the x-axis in view coordinates.\n     * @protected\n     * @return {!import(\"../../transform.js\").Transform} Transform.\n     */\n    CanvasLayerRenderer.prototype.getRenderTransform = function (center, resolution, rotation, pixelRatio, width, height, offsetX) {\n        var dx1 = width / 2;\n        var dy1 = height / 2;\n        var sx = pixelRatio / resolution;\n        var sy = -sx;\n        var dx2 = -center[0] + offsetX;\n        var dy2 = -center[1];\n        return composeTransform(this.tempTransform_, dx1, dy1, sx, sy, -rotation, dx2, dy2);\n    };\n    /**\n     * @param {import(\"../../pixel.js\").Pixel} pixel Pixel.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState FrameState.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @return {Uint8ClampedArray|Uint8Array} The result.  If there is no data at the pixel\n     *    location, null will be returned.  If there is data, but pixel values cannot be\n     *    returned, and empty array will be returned.\n     */\n    CanvasLayerRenderer.prototype.getDataAtPixel = function (pixel, frameState, hitTolerance) {\n        var renderPixel = applyTransform(this.inversePixelTransform, pixel.slice());\n        var context = this.context;\n        var data;\n        try {\n            data = context.getImageData(Math.round(renderPixel[0]), Math.round(renderPixel[1]), 1, 1).data;\n        }\n        catch (err) {\n            if (err.name === 'SecurityError') {\n                // tainted canvas, we assume there is data at the given pixel (although there might not be)\n                return new Uint8Array();\n            }\n            return data;\n        }\n        if (data[3] === 0) {\n            return null;\n        }\n        return data;\n    };\n    return CanvasLayerRenderer;\n}(LayerRenderer));\nexport default CanvasLayerRenderer;\n//# sourceMappingURL=Layer.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/canvas/TileLayer\n */\nimport { getUid } from '../../util.js';\nimport { fromUserExtent } from '../../proj.js';\nimport TileRange from '../../TileRange.js';\nimport TileState from '../../TileState.js';\nimport { createEmpty, equals, getIntersection, getTopLeft } from '../../extent.js';\nimport CanvasLayerRenderer from './Layer.js';\nimport { apply as applyTransform, compose as composeTransform, makeInverse } from '../../transform.js';\nimport { numberSafeCompareFunction } from '../../array.js';\nimport { createTransformString } from '../../render/canvas.js';\n/**\n * @classdesc\n * Canvas renderer for tile layers.\n * @api\n */\nvar CanvasTileLayerRenderer = /** @class */ (function (_super) {\n    __extends(CanvasTileLayerRenderer, _super);\n    /**\n     * @param {import(\"../../layer/Tile.js\").default|import(\"../../layer/VectorTile.js\").default} tileLayer Tile layer.\n     */\n    function CanvasTileLayerRenderer(tileLayer) {\n        var _this = _super.call(this, tileLayer) || this;\n        /**\n         * Rendered extent has changed since the previous `renderFrame()` call\n         * @type {boolean}\n         */\n        _this.extentChanged = true;\n        /**\n         * @private\n         * @type {?import(\"../../extent.js\").Extent}\n         */\n        _this.renderedExtent_ = null;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.renderedPixelRatio;\n        /**\n         * @protected\n         * @type {import(\"../../proj/Projection.js\").default}\n         */\n        _this.renderedProjection = null;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.renderedRevision;\n        /**\n         * @protected\n         * @type {!Array<import(\"../../Tile.js\").default>}\n         */\n        _this.renderedTiles = [];\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.newTiles_ = false;\n        /**\n         * @protected\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        _this.tmpExtent = createEmpty();\n        /**\n         * @private\n         * @type {import(\"../../TileRange.js\").default}\n         */\n        _this.tmpTileRange_ = new TileRange(0, 0, 0, 0);\n        return _this;\n    }\n    /**\n     * @protected\n     * @param {import(\"../../Tile.js\").default} tile Tile.\n     * @return {boolean} Tile is drawable.\n     */\n    CanvasTileLayerRenderer.prototype.isDrawableTile = function (tile) {\n        var tileLayer = this.getLayer();\n        var tileState = tile.getState();\n        var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();\n        return tileState == TileState.LOADED ||\n            tileState == TileState.EMPTY ||\n            tileState == TileState.ERROR && !useInterimTilesOnError;\n    };\n    /**\n     * @param {number} z Tile coordinate z.\n     * @param {number} x Tile coordinate x.\n     * @param {number} y Tile coordinate y.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @return {!import(\"../../Tile.js\").default} Tile.\n     */\n    CanvasTileLayerRenderer.prototype.getTile = function (z, x, y, frameState) {\n        var pixelRatio = frameState.pixelRatio;\n        var projection = frameState.viewState.projection;\n        var tileLayer = this.getLayer();\n        var tileSource = tileLayer.getSource();\n        var tile = tileSource.getTile(z, x, y, pixelRatio, projection);\n        if (tile.getState() == TileState.ERROR) {\n            if (!tileLayer.getUseInterimTilesOnError()) {\n                // When useInterimTilesOnError is false, we consider the error tile as loaded.\n                tile.setState(TileState.LOADED);\n            }\n            else if (tileLayer.getPreload() > 0) {\n                // Preloaded tiles for lower resolutions might have finished loading.\n                this.newTiles_ = true;\n            }\n        }\n        if (!this.isDrawableTile(tile)) {\n            tile = tile.getInterimTile();\n        }\n        return tile;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasTileLayerRenderer.prototype.loadedTileCallback = function (tiles, zoom, tile) {\n        if (this.isDrawableTile(tile)) {\n            return _super.prototype.loadedTileCallback.call(this, tiles, zoom, tile);\n        }\n        return false;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasTileLayerRenderer.prototype.prepareFrame = function (frameState) {\n        return !!this.getLayer().getSource();\n    };\n    /**\n     * TODO: File a TypeScript issue about inheritDoc not being followed\n     * all the way.  Without this explicit return type, the VectorTileLayer\n     * renderFrame function does not pass.\n     *\n     * @inheritDoc\n     * @returns {HTMLElement} The rendered element.\n     */\n    CanvasTileLayerRenderer.prototype.renderFrame = function (frameState, target) {\n        var layerState = frameState.layerStatesArray[frameState.layerIndex];\n        var viewState = frameState.viewState;\n        var projection = viewState.projection;\n        var viewResolution = viewState.resolution;\n        var viewCenter = viewState.center;\n        var rotation = viewState.rotation;\n        var pixelRatio = frameState.pixelRatio;\n        var tileLayer = this.getLayer();\n        var tileSource = tileLayer.getSource();\n        var sourceRevision = tileSource.getRevision();\n        var tileGrid = tileSource.getTileGridForProjection(projection);\n        var z = tileGrid.getZForResolution(viewResolution, tileSource.zDirection);\n        var tileResolution = tileGrid.getResolution(z);\n        var extent = frameState.extent;\n        var layerExtent = layerState.extent && fromUserExtent(layerState.extent, projection);\n        if (layerExtent) {\n            extent = getIntersection(extent, fromUserExtent(layerState.extent, projection));\n        }\n        var tilePixelRatio = tileSource.getTilePixelRatio(pixelRatio);\n        // desired dimensions of the canvas in pixels\n        var width = Math.round(frameState.size[0] * tilePixelRatio);\n        var height = Math.round(frameState.size[1] * tilePixelRatio);\n        if (rotation) {\n            var size = Math.round(Math.sqrt(width * width + height * height));\n            width = size;\n            height = size;\n        }\n        var dx = tileResolution * width / 2 / tilePixelRatio;\n        var dy = tileResolution * height / 2 / tilePixelRatio;\n        var canvasExtent = [\n            viewCenter[0] - dx,\n            viewCenter[1] - dy,\n            viewCenter[0] + dx,\n            viewCenter[1] + dy\n        ];\n        var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);\n        /**\n         * @type {Object<number, Object<string, import(\"../../Tile.js\").default>>}\n         */\n        var tilesToDrawByZ = {};\n        tilesToDrawByZ[z] = {};\n        var findLoadedTiles = this.createLoadedTileFinder(tileSource, projection, tilesToDrawByZ);\n        var tmpExtent = this.tmpExtent;\n        var tmpTileRange = this.tmpTileRange_;\n        this.newTiles_ = false;\n        for (var x = tileRange.minX; x <= tileRange.maxX; ++x) {\n            for (var y = tileRange.minY; y <= tileRange.maxY; ++y) {\n                var tile = this.getTile(z, x, y, frameState);\n                if (this.isDrawableTile(tile)) {\n                    var uid = getUid(this);\n                    if (tile.getState() == TileState.LOADED) {\n                        tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;\n                        var inTransition = tile.inTransition(uid);\n                        if (!this.newTiles_ && (inTransition || this.renderedTiles.indexOf(tile) === -1)) {\n                            this.newTiles_ = true;\n                        }\n                    }\n                    if (tile.getAlpha(uid, frameState.time) === 1) {\n                        // don't look for alt tiles if alpha is 1\n                        continue;\n                    }\n                }\n                var childTileRange = tileGrid.getTileCoordChildTileRange(tile.tileCoord, tmpTileRange, tmpExtent);\n                var covered = false;\n                if (childTileRange) {\n                    covered = findLoadedTiles(z + 1, childTileRange);\n                }\n                if (!covered) {\n                    tileGrid.forEachTileCoordParentTileRange(tile.tileCoord, findLoadedTiles, tmpTileRange, tmpExtent);\n                }\n            }\n        }\n        var canvasScale = tileResolution / viewResolution;\n        // set forward and inverse pixel transforms\n        composeTransform(this.pixelTransform, frameState.size[0] / 2, frameState.size[1] / 2, 1 / tilePixelRatio, 1 / tilePixelRatio, rotation, -width / 2, -height / 2);\n        var canvasTransform = createTransformString(this.pixelTransform);\n        this.useContainer(target, canvasTransform, layerState.opacity);\n        var context = this.context;\n        var canvas = context.canvas;\n        makeInverse(this.inversePixelTransform, this.pixelTransform);\n        // set scale transform for calculating tile positions on the canvas\n        composeTransform(this.tempTransform_, width / 2, height / 2, canvasScale, canvasScale, 0, -width / 2, -height / 2);\n        if (canvas.width != width || canvas.height != height) {\n            canvas.width = width;\n            canvas.height = height;\n        }\n        else if (!this.containerReused) {\n            context.clearRect(0, 0, width, height);\n        }\n        if (layerExtent) {\n            this.clipUnrotated(context, frameState, layerExtent);\n        }\n        this.preRender(context, frameState);\n        this.renderedTiles.length = 0;\n        /** @type {Array<number>} */\n        var zs = Object.keys(tilesToDrawByZ).map(Number);\n        zs.sort(numberSafeCompareFunction);\n        var clips, clipZs, currentClip;\n        if (layerState.opacity === 1 && (!this.containerReused || tileSource.getOpaque(frameState.viewState.projection))) {\n            zs = zs.reverse();\n        }\n        else {\n            clips = [];\n            clipZs = [];\n        }\n        for (var i = zs.length - 1; i >= 0; --i) {\n            var currentZ = zs[i];\n            var currentTilePixelSize = tileSource.getTilePixelSize(currentZ, pixelRatio, projection);\n            var currentResolution = tileGrid.getResolution(currentZ);\n            var currentScale = currentResolution / tileResolution;\n            var dx_1 = currentTilePixelSize[0] * currentScale * canvasScale;\n            var dy_1 = currentTilePixelSize[1] * currentScale * canvasScale;\n            var originTileCoord = tileGrid.getTileCoordForCoordAndZ(getTopLeft(canvasExtent), currentZ);\n            var originTileExtent = tileGrid.getTileCoordExtent(originTileCoord);\n            var origin_1 = applyTransform(this.tempTransform_, [\n                tilePixelRatio * (originTileExtent[0] - canvasExtent[0]) / tileResolution,\n                tilePixelRatio * (canvasExtent[3] - originTileExtent[3]) / tileResolution\n            ]);\n            var tileGutter = tilePixelRatio * tileSource.getGutterForProjection(projection);\n            var tilesToDraw = tilesToDrawByZ[currentZ];\n            for (var tileCoordKey in tilesToDraw) {\n                var tile = /** @type {import(\"../../ImageTile.js\").default} */ (tilesToDraw[tileCoordKey]);\n                var tileCoord = tile.tileCoord;\n                // Calculate integer positions and sizes so that tiles align\n                var floatX = (origin_1[0] - (originTileCoord[1] - tileCoord[1]) * dx_1);\n                var nextX = Math.round(floatX + dx_1);\n                var floatY = (origin_1[1] - (originTileCoord[2] - tileCoord[2]) * dy_1);\n                var nextY = Math.round(floatY + dy_1);\n                var x = Math.round(floatX);\n                var y = Math.round(floatY);\n                var w = nextX - x;\n                var h = nextY - y;\n                var transition = z === currentZ;\n                var inTransition = transition && tile.getAlpha(getUid(this), frameState.time) !== 1;\n                if (!inTransition) {\n                    if (clips) {\n                        // Clip mask for regions in this tile that already filled by a higher z tile\n                        context.save();\n                        currentClip = [x, y, x + w, y, x + w, y + h, x, y + h];\n                        for (var i_1 = 0, ii = clips.length; i_1 < ii; ++i_1) {\n                            if (z !== currentZ && currentZ < clipZs[i_1]) {\n                                var clip = clips[i_1];\n                                context.beginPath();\n                                // counter-clockwise (outer ring) for current tile\n                                context.moveTo(currentClip[0], currentClip[1]);\n                                context.lineTo(currentClip[2], currentClip[3]);\n                                context.lineTo(currentClip[4], currentClip[5]);\n                                context.lineTo(currentClip[6], currentClip[7]);\n                                // clockwise (inner ring) for higher z tile\n                                context.moveTo(clip[6], clip[7]);\n                                context.lineTo(clip[4], clip[5]);\n                                context.lineTo(clip[2], clip[3]);\n                                context.lineTo(clip[0], clip[1]);\n                                context.clip();\n                            }\n                        }\n                        clips.push(currentClip);\n                        clipZs.push(currentZ);\n                    }\n                    else {\n                        context.clearRect(x, y, w, h);\n                    }\n                }\n                this.drawTileImage(tile, frameState, x, y, w, h, tileGutter, transition, layerState.opacity);\n                if (clips && !inTransition) {\n                    context.restore();\n                }\n                this.renderedTiles.push(tile);\n                this.updateUsedTiles(frameState.usedTiles, tileSource, tile);\n            }\n        }\n        this.renderedRevision = sourceRevision;\n        this.renderedResolution = tileResolution;\n        this.extentChanged = !this.renderedExtent_ || !equals(this.renderedExtent_, canvasExtent);\n        this.renderedExtent_ = canvasExtent;\n        this.renderedPixelRatio = pixelRatio;\n        this.renderedProjection = projection;\n        this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio, projection, extent, z, tileLayer.getPreload());\n        this.scheduleExpireCache(frameState, tileSource);\n        this.postRender(context, frameState);\n        if (layerState.extent) {\n            context.restore();\n        }\n        if (canvasTransform !== canvas.style.transform) {\n            canvas.style.transform = canvasTransform;\n        }\n        return this.container;\n    };\n    /**\n     * @param {import(\"../../ImageTile.js\").default} tile Tile.\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {number} x Left of the tile.\n     * @param {number} y Top of the tile.\n     * @param {number} w Width of the tile.\n     * @param {number} h Height of the tile.\n     * @param {number} gutter Tile gutter.\n     * @param {boolean} transition Apply an alpha transition.\n     * @param {number} opacity Opacity.\n     */\n    CanvasTileLayerRenderer.prototype.drawTileImage = function (tile, frameState, x, y, w, h, gutter, transition, opacity) {\n        var image = this.getTileImage(tile);\n        if (!image) {\n            return;\n        }\n        var uid = getUid(this);\n        var tileAlpha = transition ? tile.getAlpha(uid, frameState.time) : 1;\n        var alpha = opacity * tileAlpha;\n        var alphaChanged = alpha !== this.context.globalAlpha;\n        if (alphaChanged) {\n            this.context.save();\n            this.context.globalAlpha = alpha;\n        }\n        this.context.drawImage(image, gutter, gutter, image.width - 2 * gutter, image.height - 2 * gutter, x, y, w, h);\n        if (alphaChanged) {\n            this.context.restore();\n        }\n        if (tileAlpha !== 1) {\n            frameState.animate = true;\n        }\n        else if (transition) {\n            tile.endTransition(uid);\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasTileLayerRenderer.prototype.getImage = function () {\n        var context = this.context;\n        return context ? context.canvas : null;\n    };\n    /**\n     * Get the image from a tile.\n     * @param {import(\"../../ImageTile.js\").default} tile Tile.\n     * @return {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} Image.\n     * @protected\n     */\n    CanvasTileLayerRenderer.prototype.getTileImage = function (tile) {\n        return tile.getImage();\n    };\n    /**\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {import(\"../../source/Tile.js\").default} tileSource Tile source.\n     * @protected\n     */\n    CanvasTileLayerRenderer.prototype.scheduleExpireCache = function (frameState, tileSource) {\n        if (tileSource.canExpireCache()) {\n            /**\n             * @param {import(\"../../source/Tile.js\").default} tileSource Tile source.\n             * @param {import(\"../../PluggableMap.js\").default} map Map.\n             * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n             */\n            var postRenderFunction = function (tileSource, map, frameState) {\n                var tileSourceKey = getUid(tileSource);\n                if (tileSourceKey in frameState.usedTiles) {\n                    tileSource.expireCache(frameState.viewState.projection, frameState.usedTiles[tileSourceKey]);\n                }\n            }.bind(null, tileSource);\n            frameState.postRenderFunctions.push(\n            /** @type {import(\"../../PluggableMap.js\").PostRenderFunction} */ (postRenderFunction));\n        }\n    };\n    /**\n     * @param {!Object<string, !Object<string, boolean>>} usedTiles Used tiles.\n     * @param {import(\"../../source/Tile.js\").default} tileSource Tile source.\n     * @param {import('../../Tile.js').default} tile Tile.\n     * @protected\n     */\n    CanvasTileLayerRenderer.prototype.updateUsedTiles = function (usedTiles, tileSource, tile) {\n        // FIXME should we use tilesToDrawByZ instead?\n        var tileSourceKey = getUid(tileSource);\n        if (!(tileSourceKey in usedTiles)) {\n            usedTiles[tileSourceKey] = {};\n        }\n        usedTiles[tileSourceKey][tile.getKey()] = true;\n    };\n    /**\n     * Manage tile pyramid.\n     * This function performs a number of functions related to the tiles at the\n     * current zoom and lower zoom levels:\n     * - registers idle tiles in frameState.wantedTiles so that they are not\n     *   discarded by the tile queue\n     * - enqueues missing tiles\n     * @param {import(\"../../PluggableMap.js\").FrameState} frameState Frame state.\n     * @param {import(\"../../source/Tile.js\").default} tileSource Tile source.\n     * @param {import(\"../../tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {import(\"../../proj/Projection.js\").default} projection Projection.\n     * @param {import(\"../../extent.js\").Extent} extent Extent.\n     * @param {number} currentZ Current Z.\n     * @param {number} preload Load low resolution tiles up to 'preload' levels.\n     * @param {function(import(\"../../Tile.js\").default)=} opt_tileCallback Tile callback.\n     * @protected\n     */\n    CanvasTileLayerRenderer.prototype.manageTilePyramid = function (frameState, tileSource, tileGrid, pixelRatio, projection, extent, currentZ, preload, opt_tileCallback) {\n        var tileSourceKey = getUid(tileSource);\n        if (!(tileSourceKey in frameState.wantedTiles)) {\n            frameState.wantedTiles[tileSourceKey] = {};\n        }\n        var wantedTiles = frameState.wantedTiles[tileSourceKey];\n        var tileQueue = frameState.tileQueue;\n        var minZoom = tileGrid.getMinZoom();\n        var tile, tileRange, tileResolution, x, y, z;\n        for (z = minZoom; z <= currentZ; ++z) {\n            tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z, tileRange);\n            tileResolution = tileGrid.getResolution(z);\n            for (x = tileRange.minX; x <= tileRange.maxX; ++x) {\n                for (y = tileRange.minY; y <= tileRange.maxY; ++y) {\n                    if (currentZ - z <= preload) {\n                        tile = tileSource.getTile(z, x, y, pixelRatio, projection);\n                        if (tile.getState() == TileState.IDLE) {\n                            wantedTiles[tile.getKey()] = true;\n                            if (!tileQueue.isKeyQueued(tile.getKey())) {\n                                tileQueue.enqueue([tile, tileSourceKey,\n                                    tileGrid.getTileCoordCenter(tile.tileCoord), tileResolution]);\n                            }\n                        }\n                        if (opt_tileCallback !== undefined) {\n                            opt_tileCallback(tile);\n                        }\n                    }\n                    else {\n                        tileSource.useTile(z, x, y, projection);\n                    }\n                }\n            }\n        }\n    };\n    return CanvasTileLayerRenderer;\n}(CanvasLayerRenderer));\n/**\n * @function\n * @return {import(\"../../layer/Tile.js\").default|import(\"../../layer/VectorTile.js\").default}\n */\nCanvasTileLayerRenderer.prototype.getLayer;\nexport default CanvasTileLayerRenderer;\n//# sourceMappingURL=TileLayer.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/Tile\n */\nimport BaseTileLayer from './BaseTile.js';\nimport CanvasTileLayerRenderer from '../renderer/canvas/TileLayer.js';\n/**\n * @classdesc\n * For layer sources that provide pre-rendered, tiled images in grids that are\n * organized by zoom levels for specific resolutions.\n * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}\n * property on the layer object; for example, setting `title: 'My Title'` in the\n * options means that `title` is observable, and has get/set accessors.\n *\n * @api\n */\nvar TileLayer = /** @class */ (function (_super) {\n    __extends(TileLayer, _super);\n    /**\n     * @param {import(\"./BaseTile.js\").Options=} opt_options Tile layer options.\n     */\n    function TileLayer(opt_options) {\n        return _super.call(this, opt_options) || this;\n    }\n    /**\n     * Create a renderer for this layer.\n     * @return {import(\"../renderer/Layer.js\").default} A layer renderer.\n     * @protected\n     */\n    TileLayer.prototype.createRenderer = function () {\n        return new CanvasTileLayerRenderer(this);\n    };\n    return TileLayer;\n}(BaseTileLayer));\nexport default TileLayer;\n//# sourceMappingURL=Tile.js.map","/**\n * @module ol/format/FormatType\n */\n/**\n * @enum {string}\n */\nexport default {\n    ARRAY_BUFFER: 'arraybuffer',\n    JSON: 'json',\n    TEXT: 'text',\n    XML: 'xml'\n};\n//# sourceMappingURL=FormatType.js.map","/**\n * @module ol/featureloader\n */\nimport { VOID } from './functions.js';\nimport FormatType from './format/FormatType.js';\n/**\n *\n * @type {boolean}\n * @private\n */\nvar withCredentials = false;\n/**\n * {@link module:ol/source/Vector} sources use a function of this type to\n * load features.\n *\n * This function takes an {@link module:ol/extent~Extent} representing the area to be loaded,\n * a `{number}` representing the resolution (map units per pixel) and an\n * {@link module:ol/proj/Projection} for the projection  as\n * arguments. `this` within the function is bound to the\n * {@link module:ol/source/Vector} it's called from.\n *\n * The function is responsible for loading the features and adding them to the\n * source.\n * @typedef {function(this:(import(\"./source/Vector\").default|import(\"./VectorTile.js\").default), import(\"./extent.js\").Extent, number,\n *                    import(\"./proj/Projection.js\").default): void} FeatureLoader\n * @api\n */\n/**\n * {@link module:ol/source/Vector} sources use a function of this type to\n * get the url to load features from.\n *\n * This function takes an {@link module:ol/extent~Extent} representing the area\n * to be loaded, a `{number}` representing the resolution (map units per pixel)\n * and an {@link module:ol/proj/Projection} for the projection  as\n * arguments and returns a `{string}` representing the URL.\n * @typedef {function(import(\"./extent.js\").Extent, number, import(\"./proj/Projection.js\").default): string} FeatureUrlFunction\n * @api\n */\n/**\n * @param {string|FeatureUrlFunction} url Feature URL service.\n * @param {import(\"./format/Feature.js\").default} format Feature format.\n * @param {function(this:import(\"./VectorTile.js\").default, Array<import(\"./Feature.js\").default>, import(\"./proj/Projection.js\").default, import(\"./extent.js\").Extent): void|function(this:import(\"./source/Vector\").default, Array<import(\"./Feature.js\").default>): void} success\n *     Function called with the loaded features and optionally with the data\n *     projection. Called with the vector tile or source as `this`.\n * @param {function(this:import(\"./VectorTile.js\").default): void|function(this:import(\"./source/Vector\").default): void} failure\n *     Function called when loading failed. Called with the vector tile or\n *     source as `this`.\n * @return {FeatureLoader} The feature loader.\n */\nexport function loadFeaturesXhr(url, format, success, failure) {\n    return (\n    /**\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {number} resolution Resolution.\n     * @param {import(\"./proj/Projection.js\").default} projection Projection.\n     * @this {import(\"./source/Vector\").default|import(\"./VectorTile.js\").default}\n     */\n    function (extent, resolution, projection) {\n        var xhr = new XMLHttpRequest();\n        xhr.open('GET', typeof url === 'function' ? url(extent, resolution, projection) : url, true);\n        if (format.getType() == FormatType.ARRAY_BUFFER) {\n            xhr.responseType = 'arraybuffer';\n        }\n        xhr.withCredentials = withCredentials;\n        /**\n         * @param {Event} event Event.\n         * @private\n         */\n        xhr.onload = function (event) {\n            // status will be 0 for file:// urls\n            if (!xhr.status || xhr.status >= 200 && xhr.status < 300) {\n                var type = format.getType();\n                /** @type {Document|Node|Object|string|undefined} */\n                var source = void 0;\n                if (type == FormatType.JSON || type == FormatType.TEXT) {\n                    source = xhr.responseText;\n                }\n                else if (type == FormatType.XML) {\n                    source = xhr.responseXML;\n                    if (!source) {\n                        source = new DOMParser().parseFromString(xhr.responseText, 'application/xml');\n                    }\n                }\n                else if (type == FormatType.ARRAY_BUFFER) {\n                    source = /** @type {ArrayBuffer} */ (xhr.response);\n                }\n                if (source) {\n                    success.call(this, format.readFeatures(source, {\n                        extent: extent,\n                        featureProjection: projection\n                    }), format.readProjection(source));\n                }\n                else {\n                    failure.call(this);\n                }\n            }\n            else {\n                failure.call(this);\n            }\n        }.bind(this);\n        /**\n         * @private\n         */\n        xhr.onerror = function () {\n            failure.call(this);\n        }.bind(this);\n        xhr.send();\n    });\n}\n/**\n * Create an XHR feature loader for a `url` and `format`. The feature loader\n * loads features (with XHR), parses the features, and adds them to the\n * vector source.\n * @param {string|FeatureUrlFunction} url Feature URL service.\n * @param {import(\"./format/Feature.js\").default} format Feature format.\n * @return {FeatureLoader} The feature loader.\n * @api\n */\nexport function xhr(url, format) {\n    return loadFeaturesXhr(url, format, \n    /**\n     * @param {Array<import(\"./Feature.js\").default>} features The loaded features.\n     * @param {import(\"./proj/Projection.js\").default} dataProjection Data\n     * projection.\n     * @this {import(\"./source/Vector\").default|import(\"./VectorTile.js\").default}\n     */\n    function (features, dataProjection) {\n        var sourceOrTile = /** @type {?} */ (this);\n        if (typeof sourceOrTile.addFeatures === 'function') {\n            /** @type {import(\"./source/Vector\").default} */ (sourceOrTile).addFeatures(features);\n        }\n    }, /* FIXME handle error */ VOID);\n}\n/**\n * Setter for the withCredentials configuration for the XHR.\n *\n * @param {boolean} xhrWithCredentials The value of withCredentials to set.\n * Compare https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/\n * @api\n */\nexport function setWithCredentials(xhrWithCredentials) {\n    withCredentials = xhrWithCredentials;\n}\n//# sourceMappingURL=featureloader.js.map","/**\n * @module ol/loadingstrategy\n */\n/**\n * Strategy function for loading all features with a single request.\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number} resolution Resolution.\n * @return {Array<import(\"./extent.js\").Extent>} Extents.\n * @api\n */\nexport function all(extent, resolution) {\n    return [[-Infinity, -Infinity, Infinity, Infinity]];\n}\n/**\n * Strategy function for loading features based on the view's extent and\n * resolution.\n * @param {import(\"./extent.js\").Extent} extent Extent.\n * @param {number} resolution Resolution.\n * @return {Array<import(\"./extent.js\").Extent>} Extents.\n * @api\n */\nexport function bbox(extent, resolution) {\n    return [extent];\n}\n/**\n * Creates a strategy function for loading features based on a tile grid.\n * @param {import(\"./tilegrid/TileGrid.js\").default} tileGrid Tile grid.\n * @return {function(import(\"./extent.js\").Extent, number): Array<import(\"./extent.js\").Extent>} Loading strategy.\n * @api\n */\nexport function tile(tileGrid) {\n    return (\n    /**\n     * @param {import(\"./extent.js\").Extent} extent Extent.\n     * @param {number} resolution Resolution.\n     * @return {Array<import(\"./extent.js\").Extent>} Extents.\n     */\n    function (extent, resolution) {\n        var z = tileGrid.getZForResolution(resolution);\n        var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);\n        /** @type {Array<import(\"./extent.js\").Extent>} */\n        var extents = [];\n        /** @type {import(\"./tilecoord.js\").TileCoord} */\n        var tileCoord = [z, 0, 0];\n        for (tileCoord[1] = tileRange.minX; tileCoord[1] <= tileRange.maxX; ++tileCoord[1]) {\n            for (tileCoord[2] = tileRange.minY; tileCoord[2] <= tileRange.maxY; ++tileCoord[2]) {\n                extents.push(tileGrid.getTileCoordExtent(tileCoord));\n            }\n        }\n        return extents;\n    });\n}\n//# sourceMappingURL=loadingstrategy.js.map","/**\n * @module ol/source/VectorEventType\n */\n/**\n * @enum {string}\n */\nexport default {\n    /**\n     * Triggered when a feature is added to the source.\n     * @event module:ol/source/Vector.VectorSourceEvent#addfeature\n     * @api\n     */\n    ADDFEATURE: 'addfeature',\n    /**\n     * Triggered when a feature is updated.\n     * @event module:ol/source/Vector.VectorSourceEvent#changefeature\n     * @api\n     */\n    CHANGEFEATURE: 'changefeature',\n    /**\n     * Triggered when the clear method is called on the source.\n     * @event module:ol/source/Vector.VectorSourceEvent#clear\n     * @api\n     */\n    CLEAR: 'clear',\n    /**\n     * Triggered when a feature is removed from the source.\n     * See {@link module:ol/source/Vector#clear source.clear()} for exceptions.\n     * @event module:ol/source/Vector.VectorSourceEvent#removefeature\n     * @api\n     */\n    REMOVEFEATURE: 'removefeature'\n};\n//# sourceMappingURL=VectorEventType.js.map","/**\n * @module ol/structs/RBush\n */\nimport { getUid } from '../util.js';\nimport RBush_ from 'rbush/rbush.js';\nimport { createOrUpdate, equals } from '../extent.js';\nimport { isEmpty } from '../obj.js';\n/**\n * @typedef {Object} Entry\n * @property {number} minX\n * @property {number} minY\n * @property {number} maxX\n * @property {number} maxY\n * @property {Object} [value]\n */\n/**\n * @classdesc\n * Wrapper around the RBush by Vladimir Agafonkin.\n * See https://github.com/mourner/rbush.\n *\n * @template T\n */\nvar RBush = /** @class */ (function () {\n    /**\n     * @param {number=} opt_maxEntries Max entries.\n     */\n    function RBush(opt_maxEntries) {\n        /**\n         * @private\n         */\n        this.rbush_ = new RBush_(opt_maxEntries);\n        /**\n         * A mapping between the objects added to this rbush wrapper\n         * and the objects that are actually added to the internal rbush.\n         * @private\n         * @type {Object<string, Entry>}\n         */\n        this.items_ = {};\n    }\n    /**\n     * Insert a value into the RBush.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {T} value Value.\n     */\n    RBush.prototype.insert = function (extent, value) {\n        /** @type {Entry} */\n        var item = {\n            minX: extent[0],\n            minY: extent[1],\n            maxX: extent[2],\n            maxY: extent[3],\n            value: value\n        };\n        this.rbush_.insert(item);\n        this.items_[getUid(value)] = item;\n    };\n    /**\n     * Bulk-insert values into the RBush.\n     * @param {Array<import(\"../extent.js\").Extent>} extents Extents.\n     * @param {Array<T>} values Values.\n     */\n    RBush.prototype.load = function (extents, values) {\n        var items = new Array(values.length);\n        for (var i = 0, l = values.length; i < l; i++) {\n            var extent = extents[i];\n            var value = values[i];\n            /** @type {Entry} */\n            var item = {\n                minX: extent[0],\n                minY: extent[1],\n                maxX: extent[2],\n                maxY: extent[3],\n                value: value\n            };\n            items[i] = item;\n            this.items_[getUid(value)] = item;\n        }\n        this.rbush_.load(items);\n    };\n    /**\n     * Remove a value from the RBush.\n     * @param {T} value Value.\n     * @return {boolean} Removed.\n     */\n    RBush.prototype.remove = function (value) {\n        var uid = getUid(value);\n        // get the object in which the value was wrapped when adding to the\n        // internal rbush. then use that object to do the removal.\n        var item = this.items_[uid];\n        delete this.items_[uid];\n        return this.rbush_.remove(item) !== null;\n    };\n    /**\n     * Update the extent of a value in the RBush.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {T} value Value.\n     */\n    RBush.prototype.update = function (extent, value) {\n        var item = this.items_[getUid(value)];\n        var bbox = [item.minX, item.minY, item.maxX, item.maxY];\n        if (!equals(bbox, extent)) {\n            this.remove(value);\n            this.insert(extent, value);\n        }\n    };\n    /**\n     * Return all values in the RBush.\n     * @return {Array<T>} All.\n     */\n    RBush.prototype.getAll = function () {\n        var items = this.rbush_.all();\n        return items.map(function (item) {\n            return item.value;\n        });\n    };\n    /**\n     * Return all values in the given extent.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @return {Array<T>} All in extent.\n     */\n    RBush.prototype.getInExtent = function (extent) {\n        /** @type {Entry} */\n        var bbox = {\n            minX: extent[0],\n            minY: extent[1],\n            maxX: extent[2],\n            maxY: extent[3]\n        };\n        var items = this.rbush_.search(bbox);\n        return items.map(function (item) {\n            return item.value;\n        });\n    };\n    /**\n     * Calls a callback function with each value in the tree.\n     * If the callback returns a truthy value, this value is returned without\n     * checking the rest of the tree.\n     * @param {function(T): *} callback Callback.\n     * @return {*} Callback return value.\n     */\n    RBush.prototype.forEach = function (callback) {\n        return this.forEach_(this.getAll(), callback);\n    };\n    /**\n     * Calls a callback function with each value in the provided extent.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {function(T): *} callback Callback.\n     * @return {*} Callback return value.\n     */\n    RBush.prototype.forEachInExtent = function (extent, callback) {\n        return this.forEach_(this.getInExtent(extent), callback);\n    };\n    /**\n     * @param {Array<T>} values Values.\n     * @param {function(T): *} callback Callback.\n     * @private\n     * @return {*} Callback return value.\n     */\n    RBush.prototype.forEach_ = function (values, callback) {\n        var result;\n        for (var i = 0, l = values.length; i < l; i++) {\n            result = callback(values[i]);\n            if (result) {\n                return result;\n            }\n        }\n        return result;\n    };\n    /**\n     * @return {boolean} Is empty.\n     */\n    RBush.prototype.isEmpty = function () {\n        return isEmpty(this.items_);\n    };\n    /**\n     * Remove all values from the RBush.\n     */\n    RBush.prototype.clear = function () {\n        this.rbush_.clear();\n        this.items_ = {};\n    };\n    /**\n     * @param {import(\"../extent.js\").Extent=} opt_extent Extent.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     */\n    RBush.prototype.getExtent = function (opt_extent) {\n        var data = this.rbush_.toJSON();\n        return createOrUpdate(data.minX, data.minY, data.maxX, data.maxY, opt_extent);\n    };\n    /**\n     * @param {RBush} rbush R-Tree.\n     */\n    RBush.prototype.concat = function (rbush) {\n        this.rbush_.load(rbush.rbush_.all());\n        for (var i in rbush.items_) {\n            this.items_[i] = rbush.items_[i];\n        }\n    };\n    return RBush;\n}());\nexport default RBush;\n//# sourceMappingURL=RBush.js.map","/**\n * @module ol/source/Vector\n */\nvar __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nimport { getUid } from '../util.js';\nimport Collection from '../Collection.js';\nimport CollectionEventType from '../CollectionEventType.js';\nimport ObjectEventType from '../ObjectEventType.js';\nimport { extend } from '../array.js';\nimport { assert } from '../asserts.js';\nimport { listen, unlistenByKey } from '../events.js';\nimport Event from '../events/Event.js';\nimport EventType from '../events/EventType.js';\nimport { containsExtent, equals } from '../extent.js';\nimport { xhr } from '../featureloader.js';\nimport { TRUE, VOID } from '../functions.js';\nimport { all as allStrategy } from '../loadingstrategy.js';\nimport { isEmpty, getValues } from '../obj.js';\nimport Source from './Source.js';\nimport SourceState from './State.js';\nimport VectorEventType from './VectorEventType.js';\nimport RBush from '../structs/RBush.js';\n/**\n * A function that takes an {@link module:ol/extent~Extent} and a resolution as arguments, and\n * returns an array of {@link module:ol/extent~Extent} with the extents to load. Usually this\n * is one of the standard {@link module:ol/loadingstrategy} strategies.\n *\n * @typedef {function(import(\"../extent.js\").Extent, number): Array<import(\"../extent.js\").Extent>} LoadingStrategy\n * @api\n */\n/**\n * @classdesc\n * Events emitted by {@link module:ol/source/Vector} instances are instances of this\n * type.\n * @template {import(\"../geom/Geometry.js\").default} Geometry\n */\nvar VectorSourceEvent = /** @class */ (function (_super) {\n    __extends(VectorSourceEvent, _super);\n    /**\n     * @param {string} type Type.\n     * @param {import(\"../Feature.js\").default<Geometry>=} opt_feature Feature.\n     */\n    function VectorSourceEvent(type, opt_feature) {\n        var _this = _super.call(this, type) || this;\n        /**\n         * The feature being added or removed.\n         * @type {import(\"../Feature.js\").default<Geometry>|undefined}\n         * @api\n         */\n        _this.feature = opt_feature;\n        return _this;\n    }\n    return VectorSourceEvent;\n}(Event));\nexport { VectorSourceEvent };\n/**\n * @typedef {Object} Options\n * @property {import(\"./Source.js\").AttributionLike} [attributions] Attributions.\n * @property {Array<import(\"../Feature.js\").default>|Collection<import(\"../Feature.js\").default>} [features]\n * Features. If provided as {@link module:ol/Collection}, the features in the source\n * and the collection will stay in sync.\n * @property {import(\"../format/Feature.js\").default} [format] The feature format used by the XHR\n * feature loader when `url` is set. Required if `url` is set, otherwise ignored.\n * @property {import(\"../featureloader.js\").FeatureLoader} [loader]\n * The loader function used to load features, from a remote source for example.\n * If this is not set and `url` is set, the source will create and use an XHR\n * feature loader.\n *\n * Example:\n *\n * ```js\n * import {Vector} from 'ol/source';\n * import {GeoJSON} from 'ol/format';\n * import {bbox} from 'ol/loadingstrategy';\n *\n * var vectorSource = new Vector({\n *   format: new GeoJSON(),\n *   loader: function(extent, resolution, projection) {\n *      var proj = projection.getCode();\n *      var url = 'https://ahocevar.com/geoserver/wfs?service=WFS&' +\n *          'version=1.1.0&request=GetFeature&typename=osm:water_areas&' +\n *          'outputFormat=application/json&srsname=' + proj + '&' +\n *          'bbox=' + extent.join(',') + ',' + proj;\n *      var xhr = new XMLHttpRequest();\n *      xhr.open('GET', url);\n *      var onError = function() {\n *        vectorSource.removeLoadedExtent(extent);\n *      }\n *      xhr.onerror = onError;\n *      xhr.onload = function() {\n *        if (xhr.status == 200) {\n *          vectorSource.addFeatures(\n *              vectorSource.getFormat().readFeatures(xhr.responseText));\n *        } else {\n *          onError();\n *        }\n *      }\n *      xhr.send();\n *    },\n *    strategy: bbox\n *  });\n * ```\n * @property {boolean} [overlaps=true] This source may have overlapping geometries.\n * Setting this to `false` (e.g. for sources with polygons that represent administrative\n * boundaries or TopoJSON sources) allows the renderer to optimise fill and\n * stroke operations.\n * @property {LoadingStrategy} [strategy] The loading strategy to use.\n * By default an {@link module:ol/loadingstrategy~all}\n * strategy is used, a one-off strategy which loads all features at once.\n * @property {string|import(\"../featureloader.js\").FeatureUrlFunction} [url]\n * Setting this option instructs the source to load features using an XHR loader\n * (see {@link module:ol/featureloader~xhr}). Use a `string` and an\n * {@link module:ol/loadingstrategy~all} for a one-off download of all features from\n * the given URL. Use a {@link module:ol/featureloader~FeatureUrlFunction} to generate the url with\n * other loading strategies.\n * Requires `format` to be set as well.\n * When default XHR feature loader is provided, the features will\n * be transformed from the data projection to the view projection\n * during parsing. If your remote data source does not advertise its projection\n * properly, this transformation will be incorrect. For some formats, the\n * default projection (usually EPSG:4326) can be overridden by setting the\n * dataProjection constructor option on the format.\n * Note that if a source contains non-feature data, such as a GeoJSON geometry\n * or a KML NetworkLink, these will be ignored. Use a custom loader to load these.\n * @property {boolean} [useSpatialIndex=true]\n * By default, an RTree is used as spatial index. When features are removed and\n * added frequently, and the total number of features is low, setting this to\n * `false` may improve performance.\n *\n * Note that\n * {@link module:ol/source/Vector~VectorSource#getFeaturesInExtent},\n * {@link module:ol/source/Vector~VectorSource#getClosestFeatureToCoordinate} and\n * {@link module:ol/source/Vector~VectorSource#getExtent} cannot be used when `useSpatialIndex` is\n * set to `false`, and {@link module:ol/source/Vector~VectorSource#forEachFeatureInExtent} will loop\n * through all features.\n *\n * When set to `false`, the features will be maintained in an\n * {@link module:ol/Collection}, which can be retrieved through\n * {@link module:ol/source/Vector~VectorSource#getFeaturesCollection}.\n * @property {boolean} [wrapX=true] Wrap the world horizontally. For vector editing across the\n * -180° and 180° meridians to work properly, this should be set to `false`. The\n * resulting geometry coordinates will then exceed the world bounds.\n */\n/**\n * @classdesc\n * Provides a source of features for vector layers. Vector features provided\n * by this source are suitable for editing. See {@link module:ol/source/VectorTile~VectorTile} for\n * vector data that is optimized for rendering.\n *\n * @fires VectorSourceEvent\n * @api\n * @template {import(\"../geom/Geometry.js\").default} Geometry\n */\nvar VectorSource = /** @class */ (function (_super) {\n    __extends(VectorSource, _super);\n    /**\n     * @param {Options=} opt_options Vector source options.\n     */\n    function VectorSource(opt_options) {\n        var _this = this;\n        var options = opt_options || {};\n        _this = _super.call(this, {\n            attributions: options.attributions,\n            projection: undefined,\n            state: SourceState.READY,\n            wrapX: options.wrapX !== undefined ? options.wrapX : true\n        }) || this;\n        /**\n         * @private\n         * @type {import(\"../featureloader.js\").FeatureLoader}\n         */\n        _this.loader_ = VOID;\n        /**\n         * @private\n         * @type {import(\"../format/Feature.js\").default|undefined}\n         */\n        _this.format_ = options.format;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.overlaps_ = options.overlaps === undefined ? true : options.overlaps;\n        /**\n         * @private\n         * @type {string|import(\"../featureloader.js\").FeatureUrlFunction|undefined}\n         */\n        _this.url_ = options.url;\n        if (options.loader !== undefined) {\n            _this.loader_ = options.loader;\n        }\n        else if (_this.url_ !== undefined) {\n            assert(_this.format_, 7); // `format` must be set when `url` is set\n            // create a XHR feature loader for \"url\" and \"format\"\n            _this.loader_ = xhr(_this.url_, /** @type {import(\"../format/Feature.js\").default} */ (_this.format_));\n        }\n        /**\n         * @private\n         * @type {LoadingStrategy}\n         */\n        _this.strategy_ = options.strategy !== undefined ? options.strategy : allStrategy;\n        var useSpatialIndex = options.useSpatialIndex !== undefined ? options.useSpatialIndex : true;\n        /**\n         * @private\n         * @type {RBush<import(\"../Feature.js\").default<Geometry>>}\n         */\n        _this.featuresRtree_ = useSpatialIndex ? new RBush() : null;\n        /**\n         * @private\n         * @type {RBush<{extent: import(\"../extent.js\").Extent}>}\n         */\n        _this.loadedExtentsRtree_ = new RBush();\n        /**\n         * @private\n         * @type {!Object<string, import(\"../Feature.js\").default<Geometry>>}\n         */\n        _this.nullGeometryFeatures_ = {};\n        /**\n         * A lookup of features by id (the return from feature.getId()).\n         * @private\n         * @type {!Object<string, import(\"../Feature.js\").default<Geometry>>}\n         */\n        _this.idIndex_ = {};\n        /**\n         * A lookup of features by uid (using getUid(feature)).\n         * @private\n         * @type {!Object<string, import(\"../Feature.js\").default<Geometry>>}\n         */\n        _this.uidIndex_ = {};\n        /**\n         * @private\n         * @type {Object<string, Array<import(\"../events.js\").EventsKey>>}\n         */\n        _this.featureChangeKeys_ = {};\n        /**\n         * @private\n         * @type {Collection<import(\"../Feature.js\").default<Geometry>>}\n         */\n        _this.featuresCollection_ = null;\n        var collection, features;\n        if (Array.isArray(options.features)) {\n            features = options.features;\n        }\n        else if (options.features) {\n            collection = options.features;\n            features = collection.getArray();\n        }\n        if (!useSpatialIndex && collection === undefined) {\n            collection = new Collection(features);\n        }\n        if (features !== undefined) {\n            _this.addFeaturesInternal(features);\n        }\n        if (collection !== undefined) {\n            _this.bindFeaturesCollection_(collection);\n        }\n        return _this;\n    }\n    /**\n     * Add a single feature to the source.  If you want to add a batch of features\n     * at once, call {@link module:ol/source/Vector~VectorSource#addFeatures #addFeatures()}\n     * instead. A feature will not be added to the source if feature with\n     * the same id is already there. The reason for this behavior is to avoid\n     * feature duplication when using bbox or tile loading strategies.\n     * Note: this also applies if an {@link module:ol/Collection} is used for features,\n     * meaning that if a feature with a duplicate id is added in the collection, it will\n     * be removed from it right away.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature Feature to add.\n     * @api\n     */\n    VectorSource.prototype.addFeature = function (feature) {\n        this.addFeatureInternal(feature);\n        this.changed();\n    };\n    /**\n     * Add a feature without firing a `change` event.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature Feature.\n     * @protected\n     */\n    VectorSource.prototype.addFeatureInternal = function (feature) {\n        var featureKey = getUid(feature);\n        if (!this.addToIndex_(featureKey, feature)) {\n            if (this.featuresCollection_) {\n                this.featuresCollection_.remove(feature);\n            }\n            return;\n        }\n        this.setupChangeEvents_(featureKey, feature);\n        var geometry = feature.getGeometry();\n        if (geometry) {\n            var extent = geometry.getExtent();\n            if (this.featuresRtree_) {\n                this.featuresRtree_.insert(extent, feature);\n            }\n        }\n        else {\n            this.nullGeometryFeatures_[featureKey] = feature;\n        }\n        this.dispatchEvent(new VectorSourceEvent(VectorEventType.ADDFEATURE, feature));\n    };\n    /**\n     * @param {string} featureKey Unique identifier for the feature.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature The feature.\n     * @private\n     */\n    VectorSource.prototype.setupChangeEvents_ = function (featureKey, feature) {\n        this.featureChangeKeys_[featureKey] = [\n            listen(feature, EventType.CHANGE, this.handleFeatureChange_, this),\n            listen(feature, ObjectEventType.PROPERTYCHANGE, this.handleFeatureChange_, this)\n        ];\n    };\n    /**\n     * @param {string} featureKey Unique identifier for the feature.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature The feature.\n     * @return {boolean} The feature is \"valid\", in the sense that it is also a\n     *     candidate for insertion into the Rtree.\n     * @private\n     */\n    VectorSource.prototype.addToIndex_ = function (featureKey, feature) {\n        var valid = true;\n        var id = feature.getId();\n        if (id !== undefined) {\n            if (!(id.toString() in this.idIndex_)) {\n                this.idIndex_[id.toString()] = feature;\n            }\n            else {\n                valid = false;\n            }\n        }\n        if (valid) {\n            assert(!(featureKey in this.uidIndex_), 30); // The passed `feature` was already added to the source\n            this.uidIndex_[featureKey] = feature;\n        }\n        return valid;\n    };\n    /**\n     * Add a batch of features to the source.\n     * @param {Array<import(\"../Feature.js\").default<Geometry>>} features Features to add.\n     * @api\n     */\n    VectorSource.prototype.addFeatures = function (features) {\n        this.addFeaturesInternal(features);\n        this.changed();\n    };\n    /**\n     * Add features without firing a `change` event.\n     * @param {Array<import(\"../Feature.js\").default<Geometry>>} features Features.\n     * @protected\n     */\n    VectorSource.prototype.addFeaturesInternal = function (features) {\n        var extents = [];\n        var newFeatures = [];\n        var geometryFeatures = [];\n        for (var i = 0, length_1 = features.length; i < length_1; i++) {\n            var feature = features[i];\n            var featureKey = getUid(feature);\n            if (this.addToIndex_(featureKey, feature)) {\n                newFeatures.push(feature);\n            }\n        }\n        for (var i = 0, length_2 = newFeatures.length; i < length_2; i++) {\n            var feature = newFeatures[i];\n            var featureKey = getUid(feature);\n            this.setupChangeEvents_(featureKey, feature);\n            var geometry = feature.getGeometry();\n            if (geometry) {\n                var extent = geometry.getExtent();\n                extents.push(extent);\n                geometryFeatures.push(feature);\n            }\n            else {\n                this.nullGeometryFeatures_[featureKey] = feature;\n            }\n        }\n        if (this.featuresRtree_) {\n            this.featuresRtree_.load(extents, geometryFeatures);\n        }\n        for (var i = 0, length_3 = newFeatures.length; i < length_3; i++) {\n            this.dispatchEvent(new VectorSourceEvent(VectorEventType.ADDFEATURE, newFeatures[i]));\n        }\n    };\n    /**\n     * @param {!Collection<import(\"../Feature.js\").default<Geometry>>} collection Collection.\n     * @private\n     */\n    VectorSource.prototype.bindFeaturesCollection_ = function (collection) {\n        var modifyingCollection = false;\n        this.addEventListener(VectorEventType.ADDFEATURE, \n        /**\n         * @param {VectorSourceEvent<Geometry>} evt The vector source event\n         */\n        function (evt) {\n            if (!modifyingCollection) {\n                modifyingCollection = true;\n                collection.push(evt.feature);\n                modifyingCollection = false;\n            }\n        });\n        this.addEventListener(VectorEventType.REMOVEFEATURE, \n        /**\n         * @param {VectorSourceEvent<Geometry>} evt The vector source event\n         */\n        function (evt) {\n            if (!modifyingCollection) {\n                modifyingCollection = true;\n                collection.remove(evt.feature);\n                modifyingCollection = false;\n            }\n        });\n        collection.addEventListener(CollectionEventType.ADD, \n        /**\n         * @param {import(\"../Collection.js\").CollectionEvent} evt The collection event\n         */\n        function (evt) {\n            if (!modifyingCollection) {\n                modifyingCollection = true;\n                this.addFeature(/** @type {import(\"../Feature.js\").default<Geometry>} */ (evt.element));\n                modifyingCollection = false;\n            }\n        }.bind(this));\n        collection.addEventListener(CollectionEventType.REMOVE, \n        /**\n         * @param {import(\"../Collection.js\").CollectionEvent} evt The collection event\n         */\n        function (evt) {\n            if (!modifyingCollection) {\n                modifyingCollection = true;\n                this.removeFeature(/** @type {import(\"../Feature.js\").default<Geometry>} */ (evt.element));\n                modifyingCollection = false;\n            }\n        }.bind(this));\n        this.featuresCollection_ = collection;\n    };\n    /**\n     * Remove all features from the source.\n     * @param {boolean=} opt_fast Skip dispatching of {@link module:ol/source/Vector.VectorSourceEvent#removefeature} events.\n     * @api\n     */\n    VectorSource.prototype.clear = function (opt_fast) {\n        if (opt_fast) {\n            for (var featureId in this.featureChangeKeys_) {\n                var keys = this.featureChangeKeys_[featureId];\n                keys.forEach(unlistenByKey);\n            }\n            if (!this.featuresCollection_) {\n                this.featureChangeKeys_ = {};\n                this.idIndex_ = {};\n                this.uidIndex_ = {};\n            }\n        }\n        else {\n            if (this.featuresRtree_) {\n                this.featuresRtree_.forEach(this.removeFeatureInternal.bind(this));\n                for (var id in this.nullGeometryFeatures_) {\n                    this.removeFeatureInternal(this.nullGeometryFeatures_[id]);\n                }\n            }\n        }\n        if (this.featuresCollection_) {\n            this.featuresCollection_.clear();\n        }\n        if (this.featuresRtree_) {\n            this.featuresRtree_.clear();\n        }\n        this.nullGeometryFeatures_ = {};\n        var clearEvent = new VectorSourceEvent(VectorEventType.CLEAR);\n        this.dispatchEvent(clearEvent);\n        this.changed();\n    };\n    /**\n     * Iterate through all features on the source, calling the provided callback\n     * with each one.  If the callback returns any \"truthy\" value, iteration will\n     * stop and the function will return the same value.\n     * Note: this function only iterate through the feature that have a defined geometry.\n     *\n     * @param {function(import(\"../Feature.js\").default<Geometry>): T} callback Called with each feature\n     *     on the source.  Return a truthy value to stop iteration.\n     * @return {T|undefined} The return value from the last call to the callback.\n     * @template T\n     * @api\n     */\n    VectorSource.prototype.forEachFeature = function (callback) {\n        if (this.featuresRtree_) {\n            return this.featuresRtree_.forEach(callback);\n        }\n        else if (this.featuresCollection_) {\n            this.featuresCollection_.forEach(callback);\n        }\n    };\n    /**\n     * Iterate through all features whose geometries contain the provided\n     * coordinate, calling the callback with each feature.  If the callback returns\n     * a \"truthy\" value, iteration will stop and the function will return the same\n     * value.\n     *\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {function(import(\"../Feature.js\").default<Geometry>): T} callback Called with each feature\n     *     whose goemetry contains the provided coordinate.\n     * @return {T|undefined} The return value from the last call to the callback.\n     * @template T\n     */\n    VectorSource.prototype.forEachFeatureAtCoordinateDirect = function (coordinate, callback) {\n        var extent = [coordinate[0], coordinate[1], coordinate[0], coordinate[1]];\n        return this.forEachFeatureInExtent(extent, function (feature) {\n            var geometry = feature.getGeometry();\n            if (geometry.intersectsCoordinate(coordinate)) {\n                return callback(feature);\n            }\n            else {\n                return undefined;\n            }\n        });\n    };\n    /**\n     * Iterate through all features whose bounding box intersects the provided\n     * extent (note that the feature's geometry may not intersect the extent),\n     * calling the callback with each feature.  If the callback returns a \"truthy\"\n     * value, iteration will stop and the function will return the same value.\n     *\n     * If you are interested in features whose geometry intersects an extent, call\n     * the {@link module:ol/source/Vector~VectorSource#forEachFeatureIntersectingExtent #forEachFeatureIntersectingExtent()} method instead.\n     *\n     * When `useSpatialIndex` is set to false, this method will loop through all\n     * features, equivalent to {@link module:ol/source/Vector~VectorSource#forEachFeature #forEachFeature()}.\n     *\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {function(import(\"../Feature.js\").default<Geometry>): T} callback Called with each feature\n     *     whose bounding box intersects the provided extent.\n     * @return {T|undefined} The return value from the last call to the callback.\n     * @template T\n     * @api\n     */\n    VectorSource.prototype.forEachFeatureInExtent = function (extent, callback) {\n        if (this.featuresRtree_) {\n            return this.featuresRtree_.forEachInExtent(extent, callback);\n        }\n        else if (this.featuresCollection_) {\n            this.featuresCollection_.forEach(callback);\n        }\n    };\n    /**\n     * Iterate through all features whose geometry intersects the provided extent,\n     * calling the callback with each feature.  If the callback returns a \"truthy\"\n     * value, iteration will stop and the function will return the same value.\n     *\n     * If you only want to test for bounding box intersection, call the\n     * {@link module:ol/source/Vector~VectorSource#forEachFeatureInExtent #forEachFeatureInExtent()} method instead.\n     *\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {function(import(\"../Feature.js\").default<Geometry>): T} callback Called with each feature\n     *     whose geometry intersects the provided extent.\n     * @return {T|undefined} The return value from the last call to the callback.\n     * @template T\n     * @api\n     */\n    VectorSource.prototype.forEachFeatureIntersectingExtent = function (extent, callback) {\n        return this.forEachFeatureInExtent(extent, \n        /**\n         * @param {import(\"../Feature.js\").default<Geometry>} feature Feature.\n         * @return {T|undefined} The return value from the last call to the callback.\n         */\n        function (feature) {\n            var geometry = feature.getGeometry();\n            if (geometry.intersectsExtent(extent)) {\n                var result = callback(feature);\n                if (result) {\n                    return result;\n                }\n            }\n        });\n    };\n    /**\n     * Get the features collection associated with this source. Will be `null`\n     * unless the source was configured with `useSpatialIndex` set to `false`, or\n     * with an {@link module:ol/Collection} as `features`.\n     * @return {Collection<import(\"../Feature.js\").default<Geometry>>} The collection of features.\n     * @api\n     */\n    VectorSource.prototype.getFeaturesCollection = function () {\n        return this.featuresCollection_;\n    };\n    /**\n     * Get all features on the source in random order.\n     * @return {Array<import(\"../Feature.js\").default<Geometry>>} Features.\n     * @api\n     */\n    VectorSource.prototype.getFeatures = function () {\n        var features;\n        if (this.featuresCollection_) {\n            features = this.featuresCollection_.getArray();\n        }\n        else if (this.featuresRtree_) {\n            features = this.featuresRtree_.getAll();\n            if (!isEmpty(this.nullGeometryFeatures_)) {\n                extend(features, getValues(this.nullGeometryFeatures_));\n            }\n        }\n        return (\n        /** @type {Array<import(\"../Feature.js\").default<Geometry>>} */ (features));\n    };\n    /**\n     * Get all features whose geometry intersects the provided coordinate.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @return {Array<import(\"../Feature.js\").default<Geometry>>} Features.\n     * @api\n     */\n    VectorSource.prototype.getFeaturesAtCoordinate = function (coordinate) {\n        var features = [];\n        this.forEachFeatureAtCoordinateDirect(coordinate, function (feature) {\n            features.push(feature);\n        });\n        return features;\n    };\n    /**\n     * Get all features whose bounding box intersects the provided extent.  Note that this returns an array of\n     * all features intersecting the given extent in random order (so it may include\n     * features whose geometries do not intersect the extent).\n     *\n     * When `useSpatialIndex` is set to false, this method will return all\n     * features.\n     *\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @return {Array<import(\"../Feature.js\").default<Geometry>>} Features.\n     * @api\n     */\n    VectorSource.prototype.getFeaturesInExtent = function (extent) {\n        if (this.featuresRtree_) {\n            return this.featuresRtree_.getInExtent(extent);\n        }\n        else if (this.featuresCollection_) {\n            return this.featuresCollection_.getArray();\n        }\n        else {\n            return [];\n        }\n    };\n    /**\n     * Get the closest feature to the provided coordinate.\n     *\n     * This method is not available when the source is configured with\n     * `useSpatialIndex` set to `false`.\n     * @param {import(\"../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {function(import(\"../Feature.js\").default<Geometry>):boolean=} opt_filter Feature filter function.\n     *     The filter function will receive one argument, the {@link module:ol/Feature feature}\n     *     and it should return a boolean value. By default, no filtering is made.\n     * @return {import(\"../Feature.js\").default<Geometry>} Closest feature.\n     * @api\n     */\n    VectorSource.prototype.getClosestFeatureToCoordinate = function (coordinate, opt_filter) {\n        // Find the closest feature using branch and bound.  We start searching an\n        // infinite extent, and find the distance from the first feature found.  This\n        // becomes the closest feature.  We then compute a smaller extent which any\n        // closer feature must intersect.  We continue searching with this smaller\n        // extent, trying to find a closer feature.  Every time we find a closer\n        // feature, we update the extent being searched so that any even closer\n        // feature must intersect it.  We continue until we run out of features.\n        var x = coordinate[0];\n        var y = coordinate[1];\n        var closestFeature = null;\n        var closestPoint = [NaN, NaN];\n        var minSquaredDistance = Infinity;\n        var extent = [-Infinity, -Infinity, Infinity, Infinity];\n        var filter = opt_filter ? opt_filter : TRUE;\n        this.featuresRtree_.forEachInExtent(extent, \n        /**\n         * @param {import(\"../Feature.js\").default<Geometry>} feature Feature.\n         */\n        function (feature) {\n            if (filter(feature)) {\n                var geometry = feature.getGeometry();\n                var previousMinSquaredDistance = minSquaredDistance;\n                minSquaredDistance = geometry.closestPointXY(x, y, closestPoint, minSquaredDistance);\n                if (minSquaredDistance < previousMinSquaredDistance) {\n                    closestFeature = feature;\n                    // This is sneaky.  Reduce the extent that it is currently being\n                    // searched while the R-Tree traversal using this same extent object\n                    // is still in progress.  This is safe because the new extent is\n                    // strictly contained by the old extent.\n                    var minDistance = Math.sqrt(minSquaredDistance);\n                    extent[0] = x - minDistance;\n                    extent[1] = y - minDistance;\n                    extent[2] = x + minDistance;\n                    extent[3] = y + minDistance;\n                }\n            }\n        });\n        return closestFeature;\n    };\n    /**\n     * Get the extent of the features currently in the source.\n     *\n     * This method is not available when the source is configured with\n     * `useSpatialIndex` set to `false`.\n     * @param {import(\"../extent.js\").Extent=} opt_extent Destination extent. If provided, no new extent\n     *     will be created. Instead, that extent's coordinates will be overwritten.\n     * @return {import(\"../extent.js\").Extent} Extent.\n     * @api\n     */\n    VectorSource.prototype.getExtent = function (opt_extent) {\n        return this.featuresRtree_.getExtent(opt_extent);\n    };\n    /**\n     * Get a feature by its identifier (the value returned by feature.getId()).\n     * Note that the index treats string and numeric identifiers as the same.  So\n     * `source.getFeatureById(2)` will return a feature with id `'2'` or `2`.\n     *\n     * @param {string|number} id Feature identifier.\n     * @return {import(\"../Feature.js\").default<Geometry>} The feature (or `null` if not found).\n     * @api\n     */\n    VectorSource.prototype.getFeatureById = function (id) {\n        var feature = this.idIndex_[id.toString()];\n        return feature !== undefined ? feature : null;\n    };\n    /**\n     * Get a feature by its internal unique identifier (using `getUid`).\n     *\n     * @param {string} uid Feature identifier.\n     * @return {import(\"../Feature.js\").default<Geometry>} The feature (or `null` if not found).\n     */\n    VectorSource.prototype.getFeatureByUid = function (uid) {\n        var feature = this.uidIndex_[uid];\n        return feature !== undefined ? feature : null;\n    };\n    /**\n     * Get the format associated with this source.\n     *\n     * @return {import(\"../format/Feature.js\").default|undefined} The feature format.\n     * @api\n     */\n    VectorSource.prototype.getFormat = function () {\n        return this.format_;\n    };\n    /**\n     * @return {boolean} The source can have overlapping geometries.\n     */\n    VectorSource.prototype.getOverlaps = function () {\n        return this.overlaps_;\n    };\n    /**\n     * Get the url associated with this source.\n     *\n     * @return {string|import(\"../featureloader.js\").FeatureUrlFunction|undefined} The url.\n     * @api\n     */\n    VectorSource.prototype.getUrl = function () {\n        return this.url_;\n    };\n    /**\n     * @param {Event} event Event.\n     * @private\n     */\n    VectorSource.prototype.handleFeatureChange_ = function (event) {\n        var feature = /** @type {import(\"../Feature.js\").default<Geometry>} */ (event.target);\n        var featureKey = getUid(feature);\n        var geometry = feature.getGeometry();\n        if (!geometry) {\n            if (!(featureKey in this.nullGeometryFeatures_)) {\n                if (this.featuresRtree_) {\n                    this.featuresRtree_.remove(feature);\n                }\n                this.nullGeometryFeatures_[featureKey] = feature;\n            }\n        }\n        else {\n            var extent = geometry.getExtent();\n            if (featureKey in this.nullGeometryFeatures_) {\n                delete this.nullGeometryFeatures_[featureKey];\n                if (this.featuresRtree_) {\n                    this.featuresRtree_.insert(extent, feature);\n                }\n            }\n            else {\n                if (this.featuresRtree_) {\n                    this.featuresRtree_.update(extent, feature);\n                }\n            }\n        }\n        var id = feature.getId();\n        if (id !== undefined) {\n            var sid = id.toString();\n            if (this.idIndex_[sid] !== feature) {\n                this.removeFromIdIndex_(feature);\n                this.idIndex_[sid] = feature;\n            }\n        }\n        else {\n            this.removeFromIdIndex_(feature);\n            this.uidIndex_[featureKey] = feature;\n        }\n        this.changed();\n        this.dispatchEvent(new VectorSourceEvent(VectorEventType.CHANGEFEATURE, feature));\n    };\n    /**\n     * Returns true if the feature is contained within the source.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature Feature.\n     * @return {boolean} Has feature.\n     * @api\n     */\n    VectorSource.prototype.hasFeature = function (feature) {\n        var id = feature.getId();\n        if (id !== undefined) {\n            return id in this.idIndex_;\n        }\n        else {\n            return getUid(feature) in this.uidIndex_;\n        }\n    };\n    /**\n     * @return {boolean} Is empty.\n     */\n    VectorSource.prototype.isEmpty = function () {\n        return this.featuresRtree_.isEmpty() && isEmpty(this.nullGeometryFeatures_);\n    };\n    /**\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @param {number} resolution Resolution.\n     * @param {import(\"../proj/Projection.js\").default} projection Projection.\n     */\n    VectorSource.prototype.loadFeatures = function (extent, resolution, projection) {\n        var loadedExtentsRtree = this.loadedExtentsRtree_;\n        var extentsToLoad = this.strategy_(extent, resolution);\n        this.loading = false;\n        var _loop_1 = function (i, ii) {\n            var extentToLoad = extentsToLoad[i];\n            var alreadyLoaded = loadedExtentsRtree.forEachInExtent(extentToLoad, \n            /**\n             * @param {{extent: import(\"../extent.js\").Extent}} object Object.\n             * @return {boolean} Contains.\n             */\n            function (object) {\n                return containsExtent(object.extent, extentToLoad);\n            });\n            if (!alreadyLoaded) {\n                this_1.loader_.call(this_1, extentToLoad, resolution, projection);\n                loadedExtentsRtree.insert(extentToLoad, { extent: extentToLoad.slice() });\n                this_1.loading = this_1.loader_ !== VOID;\n            }\n        };\n        var this_1 = this;\n        for (var i = 0, ii = extentsToLoad.length; i < ii; ++i) {\n            _loop_1(i, ii);\n        }\n    };\n    VectorSource.prototype.refresh = function () {\n        this.clear(true);\n        this.loadedExtentsRtree_.clear();\n        _super.prototype.refresh.call(this);\n    };\n    /**\n     * Remove an extent from the list of loaded extents.\n     * @param {import(\"../extent.js\").Extent} extent Extent.\n     * @api\n     */\n    VectorSource.prototype.removeLoadedExtent = function (extent) {\n        var loadedExtentsRtree = this.loadedExtentsRtree_;\n        var obj;\n        loadedExtentsRtree.forEachInExtent(extent, function (object) {\n            if (equals(object.extent, extent)) {\n                obj = object;\n                return true;\n            }\n        });\n        if (obj) {\n            loadedExtentsRtree.remove(obj);\n        }\n    };\n    /**\n     * Remove a single feature from the source.  If you want to remove all features\n     * at once, use the {@link module:ol/source/Vector~VectorSource#clear #clear()} method\n     * instead.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature Feature to remove.\n     * @api\n     */\n    VectorSource.prototype.removeFeature = function (feature) {\n        var featureKey = getUid(feature);\n        if (featureKey in this.nullGeometryFeatures_) {\n            delete this.nullGeometryFeatures_[featureKey];\n        }\n        else {\n            if (this.featuresRtree_) {\n                this.featuresRtree_.remove(feature);\n            }\n        }\n        this.removeFeatureInternal(feature);\n        this.changed();\n    };\n    /**\n     * Remove feature without firing a `change` event.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature Feature.\n     * @protected\n     */\n    VectorSource.prototype.removeFeatureInternal = function (feature) {\n        var featureKey = getUid(feature);\n        this.featureChangeKeys_[featureKey].forEach(unlistenByKey);\n        delete this.featureChangeKeys_[featureKey];\n        var id = feature.getId();\n        if (id !== undefined) {\n            delete this.idIndex_[id.toString()];\n        }\n        delete this.uidIndex_[featureKey];\n        this.dispatchEvent(new VectorSourceEvent(VectorEventType.REMOVEFEATURE, feature));\n    };\n    /**\n     * Remove a feature from the id index.  Called internally when the feature id\n     * may have changed.\n     * @param {import(\"../Feature.js\").default<Geometry>} feature The feature.\n     * @return {boolean} Removed the feature from the index.\n     * @private\n     */\n    VectorSource.prototype.removeFromIdIndex_ = function (feature) {\n        var removed = false;\n        for (var id in this.idIndex_) {\n            if (this.idIndex_[id] === feature) {\n                delete this.idIndex_[id];\n                removed = true;\n                break;\n            }\n        }\n        return removed;\n    };\n    /**\n     * Set the new loader of the source. The next render cycle will use the\n     * new loader.\n     * @param {import(\"../featureloader.js\").FeatureLoader} loader The loader to set.\n     * @api\n     */\n    VectorSource.prototype.setLoader = function (loader) {\n        this.loader_ = loader;\n    };\n    /**\n     * Points the source to a new url. The next render cycle will use the new url.\n     * @param {string|import(\"../featureloader.js\").FeatureUrlFunction} url Url.\n     * @api\n     */\n    VectorSource.prototype.setUrl = function (url) {\n        assert(this.format_, 7); // `format` must be set when `url` is set\n        this.setLoader(xhr(url, this.format_));\n    };\n    return VectorSource;\n}(Source));\nexport default VectorSource;\n//# sourceMappingURL=Vector.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/BaseVector\n */\nimport Layer from './Layer.js';\nimport { assign } from '../obj.js';\nimport { createDefaultStyle, toFunction as toStyleFunction } from '../style/Style.js';\n/**\n * @typedef {Object} Options\n * @property {string} [className='ol-layer'] A CSS class name to set to the layer element.\n * @property {number} [opacity=1] Opacity (0, 1).\n * @property {boolean} [visible=true] Visibility.\n * @property {import(\"../extent.js\").Extent} [extent] The bounding extent for layer rendering.  The layer will not be\n * rendered outside of this extent.\n * @property {number} [zIndex] The z-index for layer rendering.  At rendering time, the layers\n * will be ordered, first by Z-index and then by position. When `undefined`, a `zIndex` of 0 is assumed\n * for layers that are added to the map's `layers` collection, or `Infinity` when the layer's `setMap()`\n * method was used.\n * @property {number} [minResolution] The minimum resolution (inclusive) at which this layer will be\n * visible.\n * @property {number} [maxResolution] The maximum resolution (exclusive) below which this layer will\n * be visible.\n * @property {number} [minZoom] The minimum view zoom level (exclusive) above which this layer will be\n * visible.\n * @property {number} [maxZoom] The maximum view zoom level (inclusive) at which this layer will\n * be visible.\n * @property {import(\"../render.js\").OrderFunction} [renderOrder] Render order. Function to be used when sorting\n * features before rendering. By default features are drawn in the order that they are created. Use\n * `null` to avoid the sort, but get an undefined draw order.\n * @property {number} [renderBuffer=100] The buffer in pixels around the viewport extent used by the\n * renderer when getting features from the vector source for the rendering or hit-detection.\n * Recommended value: the size of the largest symbol, line width or label.\n * @property {import(\"../source/Vector.js\").default} [source] Source.\n * @property {import(\"../PluggableMap.js\").default} [map] Sets the layer as overlay on a map. The map will not manage\n * this layer in its layers collection, and the layer will be rendered on top. This is useful for\n * temporary layers. The standard way to add a layer to a map and have it managed by the map is to\n * use {@link module:ol/Map#addLayer}.\n * @property {boolean} [declutter=false] Declutter images and text. Decluttering is applied to all\n * image and text styles of all Vector and VectorTile layers that have set this to `true`. The priority\n * is defined by the z-index of the layer, the `zIndex` of the style and the render order of features.\n * Higher z-index means higher priority. Within the same z-index, a feature rendered before another has\n * higher priority.\n * @property {import(\"../style/Style.js\").StyleLike} [style] Layer style. See\n * {@link module:ol/style} for default style which will be used if this is not defined.\n * @property {boolean} [updateWhileAnimating=false] When set to `true`, feature batches will\n * be recreated during animations. This means that no vectors will be shown clipped, but the\n * setting will have a performance impact for large amounts of vector data. When set to `false`,\n * batches will be recreated when no animation is active.\n * @property {boolean} [updateWhileInteracting=false] When set to `true`, feature batches will\n * be recreated during interactions. See also `updateWhileAnimating`.\n */\n/**\n * @enum {string}\n * @private\n */\nvar Property = {\n    RENDER_ORDER: 'renderOrder'\n};\n/**\n * @classdesc\n * Vector data that is rendered client-side.\n * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}\n * property on the layer object; for example, setting `title: 'My Title'` in the\n * options means that `title` is observable, and has get/set accessors.\n *\n * @template {import(\"../source/Vector.js\").default|import(\"../source/VectorTile.js\").default} VectorSourceType\n * @extends {Layer<VectorSourceType>}\n * @api\n */\nvar BaseVectorLayer = /** @class */ (function (_super) {\n    __extends(BaseVectorLayer, _super);\n    /**\n     * @param {Options=} opt_options Options.\n     */\n    function BaseVectorLayer(opt_options) {\n        var _this = this;\n        var options = opt_options ? opt_options : {};\n        var baseOptions = assign({}, options);\n        delete baseOptions.style;\n        delete baseOptions.renderBuffer;\n        delete baseOptions.updateWhileAnimating;\n        delete baseOptions.updateWhileInteracting;\n        _this = _super.call(this, baseOptions) || this;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.declutter_ = options.declutter !== undefined ? options.declutter : false;\n        /**\n         * @type {number}\n         * @private\n         */\n        _this.renderBuffer_ = options.renderBuffer !== undefined ?\n            options.renderBuffer : 100;\n        /**\n         * User provided style.\n         * @type {import(\"../style/Style.js\").StyleLike}\n         * @private\n         */\n        _this.style_ = null;\n        /**\n         * Style function for use within the library.\n         * @type {import(\"../style/Style.js\").StyleFunction|undefined}\n         * @private\n         */\n        _this.styleFunction_ = undefined;\n        _this.setStyle(options.style);\n        /**\n         * @type {boolean}\n         * @private\n         */\n        _this.updateWhileAnimating_ = options.updateWhileAnimating !== undefined ?\n            options.updateWhileAnimating : false;\n        /**\n         * @type {boolean}\n         * @private\n         */\n        _this.updateWhileInteracting_ = options.updateWhileInteracting !== undefined ?\n            options.updateWhileInteracting : false;\n        return _this;\n    }\n    /**\n     * @return {boolean} Declutter.\n     */\n    BaseVectorLayer.prototype.getDeclutter = function () {\n        return this.declutter_;\n    };\n    /**\n     * Get the topmost feature that intersects the given pixel on the viewport. Returns a promise\n     * that resolves with an array of features. The array will either contain the topmost feature\n     * when a hit was detected, or it will be empty.\n     *\n     * The hit detection algorithm used for this method is optimized for performance, but is less\n     * accurate than the one used in {@link import(\"../PluggableMap.js\").default#getFeaturesAtPixel}: Text\n     * is not considered, and icons are only represented by their bounding box instead of the exact\n     * image.\n     *\n     * @param {import(\"../pixel.js\").Pixel} pixel Pixel.\n     * @return {Promise<Array<import(\"../Feature\").default>>} Promise that resolves with an array of features.\n     * @api\n     */\n    BaseVectorLayer.prototype.getFeatures = function (pixel) {\n        return _super.prototype.getFeatures.call(this, pixel);\n    };\n    /**\n     * @return {number|undefined} Render buffer.\n     */\n    BaseVectorLayer.prototype.getRenderBuffer = function () {\n        return this.renderBuffer_;\n    };\n    /**\n     * @return {function(import(\"../Feature.js\").default, import(\"../Feature.js\").default): number|null|undefined} Render\n     *     order.\n     */\n    BaseVectorLayer.prototype.getRenderOrder = function () {\n        return (\n        /** @type {import(\"../render.js\").OrderFunction|null|undefined} */ (this.get(Property.RENDER_ORDER)));\n    };\n    /**\n     * Get the style for features.  This returns whatever was passed to the `style`\n     * option at construction or to the `setStyle` method.\n     * @return {import(\"../style/Style.js\").StyleLike}\n     *     Layer style.\n     * @api\n     */\n    BaseVectorLayer.prototype.getStyle = function () {\n        return this.style_;\n    };\n    /**\n     * Get the style function.\n     * @return {import(\"../style/Style.js\").StyleFunction|undefined} Layer style function.\n     * @api\n     */\n    BaseVectorLayer.prototype.getStyleFunction = function () {\n        return this.styleFunction_;\n    };\n    /**\n     * @return {boolean} Whether the rendered layer should be updated while\n     *     animating.\n     */\n    BaseVectorLayer.prototype.getUpdateWhileAnimating = function () {\n        return this.updateWhileAnimating_;\n    };\n    /**\n     * @return {boolean} Whether the rendered layer should be updated while\n     *     interacting.\n     */\n    BaseVectorLayer.prototype.getUpdateWhileInteracting = function () {\n        return this.updateWhileInteracting_;\n    };\n    /**\n     * @param {import(\"../render.js\").OrderFunction|null|undefined} renderOrder\n     *     Render order.\n     */\n    BaseVectorLayer.prototype.setRenderOrder = function (renderOrder) {\n        this.set(Property.RENDER_ORDER, renderOrder);\n    };\n    /**\n     * Set the style for features.  This can be a single style object, an array\n     * of styles, or a function that takes a feature and resolution and returns\n     * an array of styles. If it is `undefined` the default style is used. If\n     * it is `null` the layer has no style (a `null` style), so only features\n     * that have their own styles will be rendered in the layer. See\n     * {@link module:ol/style} for information on the default style.\n     * @param {import(\"../style/Style.js\").default|Array<import(\"../style/Style.js\").default>|import(\"../style/Style.js\").StyleFunction|null|undefined} style Layer style.\n     * @api\n     */\n    BaseVectorLayer.prototype.setStyle = function (style) {\n        this.style_ = style !== undefined ? style : createDefaultStyle;\n        this.styleFunction_ = style === null ?\n            undefined : toStyleFunction(this.style_);\n        this.changed();\n    };\n    return BaseVectorLayer;\n}(Layer));\nexport default BaseVectorLayer;\n//# sourceMappingURL=BaseVector.js.map","/**\n * @module ol/render/canvas/Instruction\n */\n/**\n * @enum {number}\n */\nvar Instruction = {\n    BEGIN_GEOMETRY: 0,\n    BEGIN_PATH: 1,\n    CIRCLE: 2,\n    CLOSE_PATH: 3,\n    CUSTOM: 4,\n    DRAW_CHARS: 5,\n    DRAW_IMAGE: 6,\n    END_GEOMETRY: 7,\n    FILL: 8,\n    MOVE_TO_LINE_TO: 9,\n    SET_FILL_STYLE: 10,\n    SET_STROKE_STYLE: 11,\n    STROKE: 12\n};\n/**\n * @type {Array<Instruction>}\n */\nexport var fillInstruction = [Instruction.FILL];\n/**\n * @type {Array<Instruction>}\n */\nexport var strokeInstruction = [Instruction.STROKE];\n/**\n * @type {Array<Instruction>}\n */\nexport var beginPathInstruction = [Instruction.BEGIN_PATH];\n/**\n * @type {Array<Instruction>}\n */\nexport var closePathInstruction = [Instruction.CLOSE_PATH];\nexport default Instruction;\n//# sourceMappingURL=Instruction.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/render/canvas/Builder\n */\nimport { equals, reverseSubArray } from '../../array.js';\nimport { asColorLike } from '../../colorlike.js';\nimport { buffer, clone, coordinateRelationship } from '../../extent.js';\nimport Relationship from '../../extent/Relationship.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport { inflateCoordinates, inflateCoordinatesArray, inflateMultiCoordinatesArray } from '../../geom/flat/inflate.js';\nimport VectorContext from '../VectorContext.js';\nimport { defaultFillStyle, defaultStrokeStyle, defaultMiterLimit, defaultLineWidth, defaultLineJoin, defaultLineDashOffset, defaultLineDash, defaultLineCap } from '../canvas.js';\nimport CanvasInstruction from './Instruction.js';\n/**\n * @typedef {Object} SerializableInstructions\n * @property {Array<*>} instructions The rendering instructions.\n * @property {Array<*>} hitDetectionInstructions The rendering hit detection instructions.\n * @property {Array<number>} coordinates The array of all coordinates.\n * @property {!Object<string, import(\"../canvas.js\").TextState>} [textStates] The text states (decluttering).\n * @property {!Object<string, import(\"../canvas.js\").FillState>} [fillStates] The fill states (decluttering).\n * @property {!Object<string, import(\"../canvas.js\").StrokeState>} [strokeStates] The stroke states (decluttering).\n */\nvar CanvasBuilder = /** @class */ (function (_super) {\n    __extends(CanvasBuilder, _super);\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Maximum extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     */\n    function CanvasBuilder(tolerance, maxExtent, resolution, pixelRatio) {\n        var _this = _super.call(this) || this;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.tolerance = tolerance;\n        /**\n         * @protected\n         * @const\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        _this.maxExtent = maxExtent;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.pixelRatio = pixelRatio;\n        /**\n         * @protected\n         * @type {number}\n         */\n        _this.maxLineWidth = 0;\n        /**\n         * @protected\n         * @const\n         * @type {number}\n         */\n        _this.resolution = resolution;\n        /**\n         * @private\n         * @type {Array<*>}\n         */\n        _this.beginGeometryInstruction1_ = null;\n        /**\n         * @private\n         * @type {Array<*>}\n         */\n        _this.beginGeometryInstruction2_ = null;\n        /**\n         * @private\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        _this.bufferedMaxExtent_ = null;\n        /**\n         * @protected\n         * @type {Array<*>}\n         */\n        _this.instructions = [];\n        /**\n         * @protected\n         * @type {Array<number>}\n         */\n        _this.coordinates = [];\n        /**\n         * @private\n         * @type {import(\"../../coordinate.js\").Coordinate}\n         */\n        _this.tmpCoordinate_ = [];\n        /**\n         * @protected\n         * @type {Array<*>}\n         */\n        _this.hitDetectionInstructions = [];\n        /**\n         * @protected\n         * @type {import(\"../canvas.js\").FillStrokeState}\n         */\n        _this.state = /** @type {import(\"../canvas.js\").FillStrokeState} */ ({});\n        return _this;\n    }\n    /**\n     * @protected\n     * @param {Array<number>} dashArray Dash array.\n     * @return {Array<number>} Dash array with pixel ratio applied\n     */\n    CanvasBuilder.prototype.applyPixelRatio = function (dashArray) {\n        var pixelRatio = this.pixelRatio;\n        return pixelRatio == 1 ? dashArray : dashArray.map(function (dash) {\n            return dash * pixelRatio;\n        });\n    };\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @param {boolean} closed Last input coordinate equals first.\n     * @param {boolean} skipFirst Skip first coordinate.\n     * @protected\n     * @return {number} My end.\n     */\n    CanvasBuilder.prototype.appendFlatCoordinates = function (flatCoordinates, offset, end, stride, closed, skipFirst) {\n        var myEnd = this.coordinates.length;\n        var extent = this.getBufferedMaxExtent();\n        if (skipFirst) {\n            offset += stride;\n        }\n        var lastXCoord = flatCoordinates[offset];\n        var lastYCoord = flatCoordinates[offset + 1];\n        var nextCoord = this.tmpCoordinate_;\n        var skipped = true;\n        var i, lastRel, nextRel;\n        for (i = offset + stride; i < end; i += stride) {\n            nextCoord[0] = flatCoordinates[i];\n            nextCoord[1] = flatCoordinates[i + 1];\n            nextRel = coordinateRelationship(extent, nextCoord);\n            if (nextRel !== lastRel) {\n                if (skipped) {\n                    this.coordinates[myEnd++] = lastXCoord;\n                    this.coordinates[myEnd++] = lastYCoord;\n                }\n                this.coordinates[myEnd++] = nextCoord[0];\n                this.coordinates[myEnd++] = nextCoord[1];\n                skipped = false;\n            }\n            else if (nextRel === Relationship.INTERSECTING) {\n                this.coordinates[myEnd++] = nextCoord[0];\n                this.coordinates[myEnd++] = nextCoord[1];\n                skipped = false;\n            }\n            else {\n                skipped = true;\n            }\n            lastXCoord = nextCoord[0];\n            lastYCoord = nextCoord[1];\n            lastRel = nextRel;\n        }\n        // Last coordinate equals first or only one point to append:\n        if ((closed && skipped) || i === offset + stride) {\n            this.coordinates[myEnd++] = lastXCoord;\n            this.coordinates[myEnd++] = lastYCoord;\n        }\n        return myEnd;\n    };\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {Array<number>} ends Ends.\n     * @param {number} stride Stride.\n     * @param {Array<number>} builderEnds Builder ends.\n     * @return {number} Offset.\n     */\n    CanvasBuilder.prototype.drawCustomCoordinates_ = function (flatCoordinates, offset, ends, stride, builderEnds) {\n        for (var i = 0, ii = ends.length; i < ii; ++i) {\n            var end = ends[i];\n            var builderEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);\n            builderEnds.push(builderEnd);\n            offset = end;\n        }\n        return offset;\n    };\n    /**\n     * @inheritDoc.\n     */\n    CanvasBuilder.prototype.drawCustom = function (geometry, feature, renderer) {\n        this.beginGeometry(geometry, feature);\n        var type = geometry.getType();\n        var stride = geometry.getStride();\n        var builderBegin = this.coordinates.length;\n        var flatCoordinates, builderEnd, builderEnds, builderEndss;\n        var offset;\n        if (type == GeometryType.MULTI_POLYGON) {\n            geometry = /** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry);\n            flatCoordinates = geometry.getOrientedFlatCoordinates();\n            builderEndss = [];\n            var endss = geometry.getEndss();\n            offset = 0;\n            for (var i = 0, ii = endss.length; i < ii; ++i) {\n                var myEnds = [];\n                offset = this.drawCustomCoordinates_(flatCoordinates, offset, endss[i], stride, myEnds);\n                builderEndss.push(myEnds);\n            }\n            this.instructions.push([CanvasInstruction.CUSTOM,\n                builderBegin, builderEndss, geometry, renderer, inflateMultiCoordinatesArray]);\n        }\n        else if (type == GeometryType.POLYGON || type == GeometryType.MULTI_LINE_STRING) {\n            builderEnds = [];\n            flatCoordinates = (type == GeometryType.POLYGON) ?\n                /** @type {import(\"../../geom/Polygon.js\").default} */ (geometry).getOrientedFlatCoordinates() :\n                geometry.getFlatCoordinates();\n            offset = this.drawCustomCoordinates_(flatCoordinates, 0, \n            /** @type {import(\"../../geom/Polygon.js\").default|import(\"../../geom/MultiLineString.js\").default} */ (geometry).getEnds(), stride, builderEnds);\n            this.instructions.push([CanvasInstruction.CUSTOM,\n                builderBegin, builderEnds, geometry, renderer, inflateCoordinatesArray]);\n        }\n        else if (type == GeometryType.LINE_STRING || type == GeometryType.MULTI_POINT) {\n            flatCoordinates = geometry.getFlatCoordinates();\n            builderEnd = this.appendFlatCoordinates(flatCoordinates, 0, flatCoordinates.length, stride, false, false);\n            this.instructions.push([CanvasInstruction.CUSTOM,\n                builderBegin, builderEnd, geometry, renderer, inflateCoordinates]);\n        }\n        else if (type == GeometryType.POINT) {\n            flatCoordinates = geometry.getFlatCoordinates();\n            this.coordinates.push(flatCoordinates[0], flatCoordinates[1]);\n            builderEnd = this.coordinates.length;\n            this.instructions.push([CanvasInstruction.CUSTOM,\n                builderBegin, builderEnd, geometry, renderer]);\n        }\n        this.endGeometry(feature);\n    };\n    /**\n     * @protected\n     * @param {import(\"../../geom/Geometry\").default|import(\"../Feature.js\").default} geometry The geometry.\n     * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n     */\n    CanvasBuilder.prototype.beginGeometry = function (geometry, feature) {\n        var extent = geometry.getExtent();\n        this.beginGeometryInstruction1_ = [CanvasInstruction.BEGIN_GEOMETRY, feature, 0, extent];\n        this.instructions.push(this.beginGeometryInstruction1_);\n        this.beginGeometryInstruction2_ = [CanvasInstruction.BEGIN_GEOMETRY, feature, 0, extent];\n        this.hitDetectionInstructions.push(this.beginGeometryInstruction2_);\n    };\n    /**\n     * @return {SerializableInstructions} the serializable instructions.\n     */\n    CanvasBuilder.prototype.finish = function () {\n        return {\n            instructions: this.instructions,\n            hitDetectionInstructions: this.hitDetectionInstructions,\n            coordinates: this.coordinates\n        };\n    };\n    /**\n     * Reverse the hit detection instructions.\n     */\n    CanvasBuilder.prototype.reverseHitDetectionInstructions = function () {\n        var hitDetectionInstructions = this.hitDetectionInstructions;\n        // step 1 - reverse array\n        hitDetectionInstructions.reverse();\n        // step 2 - reverse instructions within geometry blocks\n        var i;\n        var n = hitDetectionInstructions.length;\n        var instruction;\n        var type;\n        var begin = -1;\n        for (i = 0; i < n; ++i) {\n            instruction = hitDetectionInstructions[i];\n            type = /** @type {CanvasInstruction} */ (instruction[0]);\n            if (type == CanvasInstruction.END_GEOMETRY) {\n                begin = i;\n            }\n            else if (type == CanvasInstruction.BEGIN_GEOMETRY) {\n                instruction[2] = i;\n                reverseSubArray(this.hitDetectionInstructions, begin, i);\n                begin = -1;\n            }\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasBuilder.prototype.setFillStrokeStyle = function (fillStyle, strokeStyle) {\n        var state = this.state;\n        if (fillStyle) {\n            var fillStyleColor = fillStyle.getColor();\n            state.fillStyle = asColorLike(fillStyleColor ?\n                fillStyleColor : defaultFillStyle);\n        }\n        else {\n            state.fillStyle = undefined;\n        }\n        if (strokeStyle) {\n            var strokeStyleColor = strokeStyle.getColor();\n            state.strokeStyle = asColorLike(strokeStyleColor ?\n                strokeStyleColor : defaultStrokeStyle);\n            var strokeStyleLineCap = strokeStyle.getLineCap();\n            state.lineCap = strokeStyleLineCap !== undefined ?\n                strokeStyleLineCap : defaultLineCap;\n            var strokeStyleLineDash = strokeStyle.getLineDash();\n            state.lineDash = strokeStyleLineDash ?\n                strokeStyleLineDash.slice() : defaultLineDash;\n            var strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();\n            state.lineDashOffset = strokeStyleLineDashOffset ?\n                strokeStyleLineDashOffset : defaultLineDashOffset;\n            var strokeStyleLineJoin = strokeStyle.getLineJoin();\n            state.lineJoin = strokeStyleLineJoin !== undefined ?\n                strokeStyleLineJoin : defaultLineJoin;\n            var strokeStyleWidth = strokeStyle.getWidth();\n            state.lineWidth = strokeStyleWidth !== undefined ?\n                strokeStyleWidth : defaultLineWidth;\n            var strokeStyleMiterLimit = strokeStyle.getMiterLimit();\n            state.miterLimit = strokeStyleMiterLimit !== undefined ?\n                strokeStyleMiterLimit : defaultMiterLimit;\n            if (state.lineWidth > this.maxLineWidth) {\n                this.maxLineWidth = state.lineWidth;\n                // invalidate the buffered max extent cache\n                this.bufferedMaxExtent_ = null;\n            }\n        }\n        else {\n            state.strokeStyle = undefined;\n            state.lineCap = undefined;\n            state.lineDash = null;\n            state.lineDashOffset = undefined;\n            state.lineJoin = undefined;\n            state.lineWidth = undefined;\n            state.miterLimit = undefined;\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillStrokeState} state State.\n     * @return {Array<*>} Fill instruction.\n     */\n    CanvasBuilder.prototype.createFill = function (state) {\n        var fillStyle = state.fillStyle;\n        /** @type {Array<*>} */\n        var fillInstruction = [CanvasInstruction.SET_FILL_STYLE, fillStyle];\n        if (typeof fillStyle !== 'string') {\n            // Fill is a pattern or gradient - align it!\n            fillInstruction.push(true);\n        }\n        return fillInstruction;\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillStrokeState} state State.\n     */\n    CanvasBuilder.prototype.applyStroke = function (state) {\n        this.instructions.push(this.createStroke(state));\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillStrokeState} state State.\n     * @return {Array<*>} Stroke instruction.\n     */\n    CanvasBuilder.prototype.createStroke = function (state) {\n        return [\n            CanvasInstruction.SET_STROKE_STYLE,\n            state.strokeStyle, state.lineWidth * this.pixelRatio, state.lineCap,\n            state.lineJoin, state.miterLimit,\n            this.applyPixelRatio(state.lineDash), state.lineDashOffset * this.pixelRatio\n        ];\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillStrokeState} state State.\n     * @param {function(this:CanvasBuilder, import(\"../canvas.js\").FillStrokeState):Array<*>} createFill Create fill.\n     */\n    CanvasBuilder.prototype.updateFillStyle = function (state, createFill) {\n        var fillStyle = state.fillStyle;\n        if (typeof fillStyle !== 'string' || state.currentFillStyle != fillStyle) {\n            if (fillStyle !== undefined) {\n                this.instructions.push(createFill.call(this, state));\n            }\n            state.currentFillStyle = fillStyle;\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").FillStrokeState} state State.\n     * @param {function(this:CanvasBuilder, import(\"../canvas.js\").FillStrokeState): void} applyStroke Apply stroke.\n     */\n    CanvasBuilder.prototype.updateStrokeStyle = function (state, applyStroke) {\n        var strokeStyle = state.strokeStyle;\n        var lineCap = state.lineCap;\n        var lineDash = state.lineDash;\n        var lineDashOffset = state.lineDashOffset;\n        var lineJoin = state.lineJoin;\n        var lineWidth = state.lineWidth;\n        var miterLimit = state.miterLimit;\n        if (state.currentStrokeStyle != strokeStyle ||\n            state.currentLineCap != lineCap ||\n            (lineDash != state.currentLineDash && !equals(state.currentLineDash, lineDash)) ||\n            state.currentLineDashOffset != lineDashOffset ||\n            state.currentLineJoin != lineJoin ||\n            state.currentLineWidth != lineWidth ||\n            state.currentMiterLimit != miterLimit) {\n            if (strokeStyle !== undefined) {\n                applyStroke.call(this, state);\n            }\n            state.currentStrokeStyle = strokeStyle;\n            state.currentLineCap = lineCap;\n            state.currentLineDash = lineDash;\n            state.currentLineDashOffset = lineDashOffset;\n            state.currentLineJoin = lineJoin;\n            state.currentLineWidth = lineWidth;\n            state.currentMiterLimit = miterLimit;\n        }\n    };\n    /**\n     * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n     */\n    CanvasBuilder.prototype.endGeometry = function (feature) {\n        this.beginGeometryInstruction1_[2] = this.instructions.length;\n        this.beginGeometryInstruction1_ = null;\n        this.beginGeometryInstruction2_[2] = this.hitDetectionInstructions.length;\n        this.beginGeometryInstruction2_ = null;\n        var endGeometryInstruction = [CanvasInstruction.END_GEOMETRY, feature];\n        this.instructions.push(endGeometryInstruction);\n        this.hitDetectionInstructions.push(endGeometryInstruction);\n    };\n    /**\n     * Get the buffered rendering extent.  Rendering will be clipped to the extent\n     * provided to the constructor.  To account for symbolizers that may intersect\n     * this extent, we calculate a buffered extent (e.g. based on stroke width).\n     * @return {import(\"../../extent.js\").Extent} The buffered rendering extent.\n     * @protected\n     */\n    CanvasBuilder.prototype.getBufferedMaxExtent = function () {\n        if (!this.bufferedMaxExtent_) {\n            this.bufferedMaxExtent_ = clone(this.maxExtent);\n            if (this.maxLineWidth > 0) {\n                var width = this.resolution * (this.maxLineWidth + 1) / 2;\n                buffer(this.bufferedMaxExtent_, width, this.bufferedMaxExtent_);\n            }\n        }\n        return this.bufferedMaxExtent_;\n    };\n    return CanvasBuilder;\n}(VectorContext));\nexport default CanvasBuilder;\n//# sourceMappingURL=Builder.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/render/canvas/ImageBuilder\n */\nimport CanvasInstruction from './Instruction.js';\nimport CanvasBuilder from './Builder.js';\nvar CanvasImageBuilder = /** @class */ (function (_super) {\n    __extends(CanvasImageBuilder, _super);\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Maximum extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     */\n    function CanvasImageBuilder(tolerance, maxExtent, resolution, pixelRatio) {\n        var _this = _super.call(this, tolerance, maxExtent, resolution, pixelRatio) || this;\n        /**\n         * @private\n         * @type {import(\"../canvas.js\").DeclutterGroups}\n         */\n        _this.declutterGroups_ = null;\n        /**\n         * @private\n         * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n         */\n        _this.hitDetectionImage_ = null;\n        /**\n         * @private\n         * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}\n         */\n        _this.image_ = null;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.anchorX_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.anchorY_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.height_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.opacity_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.originX_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.originY_ = undefined;\n        /**\n         * @private\n         * @type {boolean|undefined}\n         */\n        _this.rotateWithView_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.rotation_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.scale_ = undefined;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        _this.width_ = undefined;\n        return _this;\n    }\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @private\n     * @return {number} My end.\n     */\n    CanvasImageBuilder.prototype.drawCoordinates_ = function (flatCoordinates, offset, end, stride) {\n        return this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasImageBuilder.prototype.drawPoint = function (pointGeometry, feature) {\n        if (!this.image_) {\n            return;\n        }\n        this.beginGeometry(pointGeometry, feature);\n        var flatCoordinates = pointGeometry.getFlatCoordinates();\n        var stride = pointGeometry.getStride();\n        var myBegin = this.coordinates.length;\n        var myEnd = this.drawCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);\n        this.instructions.push([\n            CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.image_,\n            // Remaining arguments to DRAW_IMAGE are in alphabetical order\n            this.anchorX_, this.anchorY_, this.declutterGroups_, this.height_, this.opacity_,\n            this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n            this.scale_ * this.pixelRatio, this.width_\n        ]);\n        this.hitDetectionInstructions.push([\n            CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.hitDetectionImage_,\n            // Remaining arguments to DRAW_IMAGE are in alphabetical order\n            this.anchorX_, this.anchorY_, this.declutterGroups_, this.height_, this.opacity_,\n            this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n            this.scale_, this.width_\n        ]);\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasImageBuilder.prototype.drawMultiPoint = function (multiPointGeometry, feature) {\n        if (!this.image_) {\n            return;\n        }\n        this.beginGeometry(multiPointGeometry, feature);\n        var flatCoordinates = multiPointGeometry.getFlatCoordinates();\n        var stride = multiPointGeometry.getStride();\n        var myBegin = this.coordinates.length;\n        var myEnd = this.drawCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);\n        this.instructions.push([\n            CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.image_,\n            // Remaining arguments to DRAW_IMAGE are in alphabetical order\n            this.anchorX_, this.anchorY_, this.declutterGroups_, this.height_, this.opacity_,\n            this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n            this.scale_ * this.pixelRatio, this.width_\n        ]);\n        this.hitDetectionInstructions.push([\n            CanvasInstruction.DRAW_IMAGE, myBegin, myEnd, this.hitDetectionImage_,\n            // Remaining arguments to DRAW_IMAGE are in alphabetical order\n            this.anchorX_, this.anchorY_, this.declutterGroups_, this.height_, this.opacity_,\n            this.originX_, this.originY_, this.rotateWithView_, this.rotation_,\n            this.scale_, this.width_\n        ]);\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasImageBuilder.prototype.finish = function () {\n        this.reverseHitDetectionInstructions();\n        // FIXME this doesn't really protect us against further calls to draw*Geometry\n        this.anchorX_ = undefined;\n        this.anchorY_ = undefined;\n        this.hitDetectionImage_ = null;\n        this.image_ = null;\n        this.height_ = undefined;\n        this.scale_ = undefined;\n        this.opacity_ = undefined;\n        this.originX_ = undefined;\n        this.originY_ = undefined;\n        this.rotateWithView_ = undefined;\n        this.rotation_ = undefined;\n        this.width_ = undefined;\n        return _super.prototype.finish.call(this);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasImageBuilder.prototype.setImageStyle = function (imageStyle, declutterGroups) {\n        var anchor = imageStyle.getAnchor();\n        var size = imageStyle.getSize();\n        var hitDetectionImage = imageStyle.getHitDetectionImage(1);\n        var image = imageStyle.getImage(1);\n        var origin = imageStyle.getOrigin();\n        this.anchorX_ = anchor[0];\n        this.anchorY_ = anchor[1];\n        this.declutterGroups_ = /** @type {import(\"../canvas.js\").DeclutterGroups} */ (declutterGroups);\n        this.hitDetectionImage_ = hitDetectionImage;\n        this.image_ = image;\n        this.height_ = size[1];\n        this.opacity_ = imageStyle.getOpacity();\n        this.originX_ = origin[0];\n        this.originY_ = origin[1];\n        this.rotateWithView_ = imageStyle.getRotateWithView();\n        this.rotation_ = imageStyle.getRotation();\n        this.scale_ = imageStyle.getScale();\n        this.width_ = size[0];\n    };\n    return CanvasImageBuilder;\n}(CanvasBuilder));\nexport default CanvasImageBuilder;\n//# sourceMappingURL=ImageBuilder.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/render/canvas/LineStringBuilder\n */\nimport CanvasInstruction, { strokeInstruction, beginPathInstruction } from './Instruction.js';\nimport CanvasBuilder from './Builder.js';\nvar CanvasLineStringBuilder = /** @class */ (function (_super) {\n    __extends(CanvasLineStringBuilder, _super);\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Maximum extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     */\n    function CanvasLineStringBuilder(tolerance, maxExtent, resolution, pixelRatio) {\n        return _super.call(this, tolerance, maxExtent, resolution, pixelRatio) || this;\n    }\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {number} end End.\n     * @param {number} stride Stride.\n     * @private\n     * @return {number} end.\n     */\n    CanvasLineStringBuilder.prototype.drawFlatCoordinates_ = function (flatCoordinates, offset, end, stride) {\n        var myBegin = this.coordinates.length;\n        var myEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, false, false);\n        var moveToLineToInstruction = [CanvasInstruction.MOVE_TO_LINE_TO, myBegin, myEnd];\n        this.instructions.push(moveToLineToInstruction);\n        this.hitDetectionInstructions.push(moveToLineToInstruction);\n        return end;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasLineStringBuilder.prototype.drawLineString = function (lineStringGeometry, feature) {\n        var state = this.state;\n        var strokeStyle = state.strokeStyle;\n        var lineWidth = state.lineWidth;\n        if (strokeStyle === undefined || lineWidth === undefined) {\n            return;\n        }\n        this.updateStrokeStyle(state, this.applyStroke);\n        this.beginGeometry(lineStringGeometry, feature);\n        this.hitDetectionInstructions.push([\n            CanvasInstruction.SET_STROKE_STYLE,\n            state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n            state.miterLimit, state.lineDash, state.lineDashOffset\n        ], beginPathInstruction);\n        var flatCoordinates = lineStringGeometry.getFlatCoordinates();\n        var stride = lineStringGeometry.getStride();\n        this.drawFlatCoordinates_(flatCoordinates, 0, flatCoordinates.length, stride);\n        this.hitDetectionInstructions.push(strokeInstruction);\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasLineStringBuilder.prototype.drawMultiLineString = function (multiLineStringGeometry, feature) {\n        var state = this.state;\n        var strokeStyle = state.strokeStyle;\n        var lineWidth = state.lineWidth;\n        if (strokeStyle === undefined || lineWidth === undefined) {\n            return;\n        }\n        this.updateStrokeStyle(state, this.applyStroke);\n        this.beginGeometry(multiLineStringGeometry, feature);\n        this.hitDetectionInstructions.push([\n            CanvasInstruction.SET_STROKE_STYLE,\n            state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n            state.miterLimit, state.lineDash, state.lineDashOffset\n        ], beginPathInstruction);\n        var ends = multiLineStringGeometry.getEnds();\n        var flatCoordinates = multiLineStringGeometry.getFlatCoordinates();\n        var stride = multiLineStringGeometry.getStride();\n        var offset = 0;\n        for (var i = 0, ii = ends.length; i < ii; ++i) {\n            offset = this.drawFlatCoordinates_(flatCoordinates, offset, ends[i], stride);\n        }\n        this.hitDetectionInstructions.push(strokeInstruction);\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasLineStringBuilder.prototype.finish = function () {\n        var state = this.state;\n        if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {\n            this.instructions.push(strokeInstruction);\n        }\n        this.reverseHitDetectionInstructions();\n        this.state = null;\n        return _super.prototype.finish.call(this);\n    };\n    /**\n     * @inheritDoc.\n     */\n    CanvasLineStringBuilder.prototype.applyStroke = function (state) {\n        if (state.lastStroke != undefined && state.lastStroke != this.coordinates.length) {\n            this.instructions.push(strokeInstruction);\n            state.lastStroke = this.coordinates.length;\n        }\n        state.lastStroke = 0;\n        _super.prototype.applyStroke.call(this, state);\n        this.instructions.push(beginPathInstruction);\n    };\n    return CanvasLineStringBuilder;\n}(CanvasBuilder));\nexport default CanvasLineStringBuilder;\n//# sourceMappingURL=LineStringBuilder.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/render/canvas/PolygonBuilder\n */\nimport { snap } from '../../geom/flat/simplify.js';\nimport { defaultFillStyle } from '../canvas.js';\nimport CanvasInstruction, { fillInstruction, strokeInstruction, beginPathInstruction, closePathInstruction } from './Instruction.js';\nimport CanvasBuilder from './Builder.js';\nvar CanvasPolygonBuilder = /** @class */ (function (_super) {\n    __extends(CanvasPolygonBuilder, _super);\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Maximum extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     */\n    function CanvasPolygonBuilder(tolerance, maxExtent, resolution, pixelRatio) {\n        return _super.call(this, tolerance, maxExtent, resolution, pixelRatio) || this;\n    }\n    /**\n     * @param {Array<number>} flatCoordinates Flat coordinates.\n     * @param {number} offset Offset.\n     * @param {Array<number>} ends Ends.\n     * @param {number} stride Stride.\n     * @private\n     * @return {number} End.\n     */\n    CanvasPolygonBuilder.prototype.drawFlatCoordinatess_ = function (flatCoordinates, offset, ends, stride) {\n        var state = this.state;\n        var fill = state.fillStyle !== undefined;\n        var stroke = state.strokeStyle !== undefined;\n        var numEnds = ends.length;\n        this.instructions.push(beginPathInstruction);\n        this.hitDetectionInstructions.push(beginPathInstruction);\n        for (var i = 0; i < numEnds; ++i) {\n            var end = ends[i];\n            var myBegin = this.coordinates.length;\n            var myEnd = this.appendFlatCoordinates(flatCoordinates, offset, end, stride, true, !stroke);\n            var moveToLineToInstruction = [CanvasInstruction.MOVE_TO_LINE_TO, myBegin, myEnd];\n            this.instructions.push(moveToLineToInstruction);\n            this.hitDetectionInstructions.push(moveToLineToInstruction);\n            if (stroke) {\n                // Performance optimization: only call closePath() when we have a stroke.\n                // Otherwise the ring is closed already (see appendFlatCoordinates above).\n                this.instructions.push(closePathInstruction);\n                this.hitDetectionInstructions.push(closePathInstruction);\n            }\n            offset = end;\n        }\n        if (fill) {\n            this.instructions.push(fillInstruction);\n            this.hitDetectionInstructions.push(fillInstruction);\n        }\n        if (stroke) {\n            this.instructions.push(strokeInstruction);\n            this.hitDetectionInstructions.push(strokeInstruction);\n        }\n        return offset;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasPolygonBuilder.prototype.drawCircle = function (circleGeometry, feature) {\n        var state = this.state;\n        var fillStyle = state.fillStyle;\n        var strokeStyle = state.strokeStyle;\n        if (fillStyle === undefined && strokeStyle === undefined) {\n            return;\n        }\n        this.setFillStrokeStyles_();\n        this.beginGeometry(circleGeometry, feature);\n        if (state.fillStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_FILL_STYLE,\n                defaultFillStyle\n            ]);\n        }\n        if (state.strokeStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_STROKE_STYLE,\n                state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n                state.miterLimit, state.lineDash, state.lineDashOffset\n            ]);\n        }\n        var flatCoordinates = circleGeometry.getFlatCoordinates();\n        var stride = circleGeometry.getStride();\n        var myBegin = this.coordinates.length;\n        this.appendFlatCoordinates(flatCoordinates, 0, flatCoordinates.length, stride, false, false);\n        var circleInstruction = [CanvasInstruction.CIRCLE, myBegin];\n        this.instructions.push(beginPathInstruction, circleInstruction);\n        this.hitDetectionInstructions.push(beginPathInstruction, circleInstruction);\n        if (state.fillStyle !== undefined) {\n            this.instructions.push(fillInstruction);\n            this.hitDetectionInstructions.push(fillInstruction);\n        }\n        if (state.strokeStyle !== undefined) {\n            this.instructions.push(strokeInstruction);\n            this.hitDetectionInstructions.push(strokeInstruction);\n        }\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasPolygonBuilder.prototype.drawPolygon = function (polygonGeometry, feature) {\n        var state = this.state;\n        var fillStyle = state.fillStyle;\n        var strokeStyle = state.strokeStyle;\n        if (fillStyle === undefined && strokeStyle === undefined) {\n            return;\n        }\n        this.setFillStrokeStyles_();\n        this.beginGeometry(polygonGeometry, feature);\n        if (state.fillStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_FILL_STYLE,\n                defaultFillStyle\n            ]);\n        }\n        if (state.strokeStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_STROKE_STYLE,\n                state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n                state.miterLimit, state.lineDash, state.lineDashOffset\n            ]);\n        }\n        var ends = polygonGeometry.getEnds();\n        var flatCoordinates = polygonGeometry.getOrientedFlatCoordinates();\n        var stride = polygonGeometry.getStride();\n        this.drawFlatCoordinatess_(flatCoordinates, 0, ends, stride);\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasPolygonBuilder.prototype.drawMultiPolygon = function (multiPolygonGeometry, feature) {\n        var state = this.state;\n        var fillStyle = state.fillStyle;\n        var strokeStyle = state.strokeStyle;\n        if (fillStyle === undefined && strokeStyle === undefined) {\n            return;\n        }\n        this.setFillStrokeStyles_();\n        this.beginGeometry(multiPolygonGeometry, feature);\n        if (state.fillStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_FILL_STYLE,\n                defaultFillStyle\n            ]);\n        }\n        if (state.strokeStyle !== undefined) {\n            this.hitDetectionInstructions.push([\n                CanvasInstruction.SET_STROKE_STYLE,\n                state.strokeStyle, state.lineWidth, state.lineCap, state.lineJoin,\n                state.miterLimit, state.lineDash, state.lineDashOffset\n            ]);\n        }\n        var endss = multiPolygonGeometry.getEndss();\n        var flatCoordinates = multiPolygonGeometry.getOrientedFlatCoordinates();\n        var stride = multiPolygonGeometry.getStride();\n        var offset = 0;\n        for (var i = 0, ii = endss.length; i < ii; ++i) {\n            offset = this.drawFlatCoordinatess_(flatCoordinates, offset, endss[i], stride);\n        }\n        this.endGeometry(feature);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasPolygonBuilder.prototype.finish = function () {\n        this.reverseHitDetectionInstructions();\n        this.state = null;\n        // We want to preserve topology when drawing polygons.  Polygons are\n        // simplified using quantization and point elimination. However, we might\n        // have received a mix of quantized and non-quantized geometries, so ensure\n        // that all are quantized by quantizing all coordinates in the batch.\n        var tolerance = this.tolerance;\n        if (tolerance !== 0) {\n            var coordinates = this.coordinates;\n            for (var i = 0, ii = coordinates.length; i < ii; ++i) {\n                coordinates[i] = snap(coordinates[i], tolerance);\n            }\n        }\n        return _super.prototype.finish.call(this);\n    };\n    /**\n     * @private\n     */\n    CanvasPolygonBuilder.prototype.setFillStrokeStyles_ = function () {\n        var state = this.state;\n        var fillStyle = state.fillStyle;\n        if (fillStyle !== undefined) {\n            this.updateFillStyle(state, this.createFill);\n        }\n        if (state.strokeStyle !== undefined) {\n            this.updateStrokeStyle(state, this.applyStroke);\n        }\n    };\n    return CanvasPolygonBuilder;\n}(CanvasBuilder));\nexport default CanvasPolygonBuilder;\n//# sourceMappingURL=PolygonBuilder.js.map","/**\n * @module ol/geom/flat/straightchunk\n */\n/**\n * @param {number} maxAngle Maximum acceptable angle delta between segments.\n * @param {Array<number>} flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @return {Array<number>} Start and end of the first suitable chunk of the\n * given `flatCoordinates`.\n */\nexport function matchingChunk(maxAngle, flatCoordinates, offset, end, stride) {\n    var chunkStart = offset;\n    var chunkEnd = offset;\n    var chunkM = 0;\n    var m = 0;\n    var start = offset;\n    var acos, i, m12, m23, x1, y1, x12, y12, x23, y23;\n    for (i = offset; i < end; i += stride) {\n        var x2 = flatCoordinates[i];\n        var y2 = flatCoordinates[i + 1];\n        if (x1 !== undefined) {\n            x23 = x2 - x1;\n            y23 = y2 - y1;\n            m23 = Math.sqrt(x23 * x23 + y23 * y23);\n            if (x12 !== undefined) {\n                m += m12;\n                acos = Math.acos((x12 * x23 + y12 * y23) / (m12 * m23));\n                if (acos > maxAngle) {\n                    if (m > chunkM) {\n                        chunkM = m;\n                        chunkStart = start;\n                        chunkEnd = i;\n                    }\n                    m = 0;\n                    start = i - stride;\n                }\n            }\n            m12 = m23;\n            x12 = x23;\n            y12 = y23;\n        }\n        x1 = x2;\n        y1 = y2;\n    }\n    m += m23;\n    return m > chunkM ? [start, i] : [chunkStart, chunkEnd];\n}\n//# sourceMappingURL=straightchunk.js.map","/**\n * @module ol/style/TextPlacement\n */\n/**\n * Text placement. One of `'point'`, `'line'`. Default is `'point'`. Note that\n * `'line'` requires the underlying geometry to be a {@link module:ol/geom/LineString~LineString},\n * {@link module:ol/geom/Polygon~Polygon}, {@link module:ol/geom/MultiLineString~MultiLineString} or\n * {@link module:ol/geom/MultiPolygon~MultiPolygon}.\n * @enum {string}\n */\nexport default {\n    POINT: 'point',\n    LINE: 'line'\n};\n//# sourceMappingURL=TextPlacement.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/render/canvas/TextBuilder\n */\nimport { getUid } from '../../util.js';\nimport { asColorLike } from '../../colorlike.js';\nimport { intersects } from '../../extent.js';\nimport { matchingChunk } from '../../geom/flat/straightchunk.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport { defaultTextAlign, defaultPadding, defaultLineCap, defaultLineDashOffset, defaultLineDash, defaultLineJoin, defaultFillStyle, registerFont, defaultFont, defaultLineWidth, defaultMiterLimit, defaultStrokeStyle, defaultTextBaseline } from '../canvas.js';\nimport CanvasInstruction from './Instruction.js';\nimport CanvasBuilder from './Builder.js';\nimport TextPlacement from '../../style/TextPlacement.js';\n/**\n * @const\n * @enum {number}\n */\nexport var TEXT_ALIGN = {\n    'left': 0,\n    'end': 0,\n    'center': 0.5,\n    'right': 1,\n    'start': 1,\n    'top': 0,\n    'middle': 0.5,\n    'hanging': 0.2,\n    'alphabetic': 0.8,\n    'ideographic': 0.8,\n    'bottom': 1\n};\nvar CanvasTextBuilder = /** @class */ (function (_super) {\n    __extends(CanvasTextBuilder, _super);\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Maximum extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     */\n    function CanvasTextBuilder(tolerance, maxExtent, resolution, pixelRatio) {\n        var _this = _super.call(this, tolerance, maxExtent, resolution, pixelRatio) || this;\n        /**\n         * @private\n         * @type {import(\"../canvas.js\").DeclutterGroups}\n         */\n        _this.declutterGroups_;\n        /**\n         * @private\n         * @type {Array<HTMLCanvasElement>}\n         */\n        _this.labels_ = null;\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.text_ = '';\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textOffsetX_ = 0;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textOffsetY_ = 0;\n        /**\n         * @private\n         * @type {boolean|undefined}\n         */\n        _this.textRotateWithView_ = undefined;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.textRotation_ = 0;\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").FillState}\n         */\n        _this.textFillState_ = null;\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").FillState>}\n         */\n        _this.fillStates = {};\n        /**\n         * @private\n         * @type {?import(\"../canvas.js\").StrokeState}\n         */\n        _this.textStrokeState_ = null;\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").StrokeState>}\n         */\n        _this.strokeStates = {};\n        /**\n         * @private\n         * @type {import(\"../canvas.js\").TextState}\n         */\n        _this.textState_ = /** @type {import(\"../canvas.js\").TextState} */ ({});\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").TextState>}\n         */\n        _this.textStates = {};\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.textKey_ = '';\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.fillKey_ = '';\n        /**\n         * @private\n         * @type {string}\n         */\n        _this.strokeKey_ = '';\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    CanvasTextBuilder.prototype.finish = function () {\n        var instructions = _super.prototype.finish.call(this);\n        instructions.textStates = this.textStates;\n        instructions.fillStates = this.fillStates;\n        instructions.strokeStates = this.strokeStates;\n        return instructions;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasTextBuilder.prototype.drawText = function (geometry, feature) {\n        var fillState = this.textFillState_;\n        var strokeState = this.textStrokeState_;\n        var textState = this.textState_;\n        if (this.text_ === '' || !textState || (!fillState && !strokeState)) {\n            return;\n        }\n        var begin = this.coordinates.length;\n        var geometryType = geometry.getType();\n        var flatCoordinates = null;\n        var end = 2;\n        var stride = 2;\n        var i, ii;\n        if (textState.placement === TextPlacement.LINE) {\n            if (!intersects(this.getBufferedMaxExtent(), geometry.getExtent())) {\n                return;\n            }\n            var ends = void 0;\n            flatCoordinates = geometry.getFlatCoordinates();\n            stride = geometry.getStride();\n            if (geometryType == GeometryType.LINE_STRING) {\n                ends = [flatCoordinates.length];\n            }\n            else if (geometryType == GeometryType.MULTI_LINE_STRING) {\n                ends = geometry.getEnds();\n            }\n            else if (geometryType == GeometryType.POLYGON) {\n                ends = geometry.getEnds().slice(0, 1);\n            }\n            else if (geometryType == GeometryType.MULTI_POLYGON) {\n                var endss = geometry.getEndss();\n                ends = [];\n                for (i = 0, ii = endss.length; i < ii; ++i) {\n                    ends.push(endss[i][0]);\n                }\n            }\n            this.beginGeometry(geometry, feature);\n            var textAlign = textState.textAlign;\n            var flatOffset = 0;\n            var flatEnd = void 0;\n            for (var o = 0, oo = ends.length; o < oo; ++o) {\n                if (textAlign == undefined) {\n                    var range = matchingChunk(textState.maxAngle, flatCoordinates, flatOffset, ends[o], stride);\n                    flatOffset = range[0];\n                    flatEnd = range[1];\n                }\n                else {\n                    flatEnd = ends[o];\n                }\n                for (i = flatOffset; i < flatEnd; i += stride) {\n                    this.coordinates.push(flatCoordinates[i], flatCoordinates[i + 1]);\n                }\n                end = this.coordinates.length;\n                flatOffset = ends[o];\n                var declutterGroup = this.declutterGroups_ ?\n                    (o === 0 ? this.declutterGroups_[0] : [].concat(this.declutterGroups_[0])) :\n                    null;\n                this.drawChars_(begin, end, declutterGroup);\n                begin = end;\n            }\n            this.endGeometry(feature);\n        }\n        else {\n            var geometryWidths = null;\n            if (!textState.overflow) {\n                geometryWidths = [];\n            }\n            switch (geometryType) {\n                case GeometryType.POINT:\n                case GeometryType.MULTI_POINT:\n                    flatCoordinates = geometry.getFlatCoordinates();\n                    end = flatCoordinates.length;\n                    break;\n                case GeometryType.LINE_STRING:\n                    flatCoordinates = /** @type {import(\"../../geom/LineString.js\").default} */ (geometry).getFlatMidpoint();\n                    break;\n                case GeometryType.CIRCLE:\n                    flatCoordinates = /** @type {import(\"../../geom/Circle.js\").default} */ (geometry).getCenter();\n                    break;\n                case GeometryType.MULTI_LINE_STRING:\n                    flatCoordinates = /** @type {import(\"../../geom/MultiLineString.js\").default} */ (geometry).getFlatMidpoints();\n                    end = flatCoordinates.length;\n                    break;\n                case GeometryType.POLYGON:\n                    flatCoordinates = /** @type {import(\"../../geom/Polygon.js\").default} */ (geometry).getFlatInteriorPoint();\n                    if (!textState.overflow) {\n                        geometryWidths.push(flatCoordinates[2] / this.resolution);\n                    }\n                    stride = 3;\n                    break;\n                case GeometryType.MULTI_POLYGON:\n                    var interiorPoints = /** @type {import(\"../../geom/MultiPolygon.js\").default} */ (geometry).getFlatInteriorPoints();\n                    flatCoordinates = [];\n                    for (i = 0, ii = interiorPoints.length; i < ii; i += 3) {\n                        if (!textState.overflow) {\n                            geometryWidths.push(interiorPoints[i + 2] / this.resolution);\n                        }\n                        flatCoordinates.push(interiorPoints[i], interiorPoints[i + 1]);\n                    }\n                    end = flatCoordinates.length;\n                    if (end == 0) {\n                        return;\n                    }\n                    break;\n                default:\n            }\n            end = this.appendFlatCoordinates(flatCoordinates, 0, end, stride, false, false);\n            this.saveTextStates_();\n            if (textState.backgroundFill || textState.backgroundStroke) {\n                this.setFillStrokeStyle(textState.backgroundFill, textState.backgroundStroke);\n                if (textState.backgroundFill) {\n                    this.updateFillStyle(this.state, this.createFill);\n                    this.hitDetectionInstructions.push(this.createFill(this.state));\n                }\n                if (textState.backgroundStroke) {\n                    this.updateStrokeStyle(this.state, this.applyStroke);\n                    this.hitDetectionInstructions.push(this.createStroke(this.state));\n                }\n            }\n            this.beginGeometry(geometry, feature);\n            // The image is unknown at this stage so we pass null; it will be computed at render time.\n            // For clarity, we pass NaN for offsetX, offsetY, width and height, which will be computed at\n            // render time.\n            var pixelRatio_1 = this.pixelRatio;\n            this.instructions.push([CanvasInstruction.DRAW_IMAGE, begin, end,\n                null, NaN, NaN, this.declutterGroups_, NaN, 1, 0, 0,\n                this.textRotateWithView_, this.textRotation_, 1, NaN,\n                textState.padding == defaultPadding ?\n                    defaultPadding : textState.padding.map(function (p) {\n                    return p * pixelRatio_1;\n                }),\n                !!textState.backgroundFill, !!textState.backgroundStroke,\n                this.text_, this.textKey_, this.strokeKey_, this.fillKey_,\n                this.textOffsetX_, this.textOffsetY_, geometryWidths\n            ]);\n            this.hitDetectionInstructions.push([CanvasInstruction.DRAW_IMAGE, begin, end,\n                null, NaN, NaN, this.declutterGroups_, NaN, 1, 0, 0,\n                this.textRotateWithView_, this.textRotation_, 1 / this.pixelRatio, NaN,\n                textState.padding,\n                !!textState.backgroundFill, !!textState.backgroundStroke,\n                this.text_, this.textKey_, this.strokeKey_, this.fillKey_,\n                this.textOffsetX_, this.textOffsetY_, geometryWidths\n            ]);\n            this.endGeometry(feature);\n        }\n    };\n    /**\n     * @private\n     */\n    CanvasTextBuilder.prototype.saveTextStates_ = function () {\n        var strokeState = this.textStrokeState_;\n        var textState = this.textState_;\n        var fillState = this.textFillState_;\n        var strokeKey = this.strokeKey_;\n        if (strokeState) {\n            if (!(strokeKey in this.strokeStates)) {\n                this.strokeStates[strokeKey] = {\n                    strokeStyle: strokeState.strokeStyle,\n                    lineCap: strokeState.lineCap,\n                    lineDashOffset: strokeState.lineDashOffset,\n                    lineWidth: strokeState.lineWidth,\n                    lineJoin: strokeState.lineJoin,\n                    miterLimit: strokeState.miterLimit,\n                    lineDash: strokeState.lineDash\n                };\n            }\n        }\n        var textKey = this.textKey_;\n        if (!(textKey in this.textStates)) {\n            this.textStates[textKey] = {\n                font: textState.font,\n                textAlign: textState.textAlign || defaultTextAlign,\n                textBaseline: textState.textBaseline || defaultTextBaseline,\n                scale: textState.scale\n            };\n        }\n        var fillKey = this.fillKey_;\n        if (fillState) {\n            if (!(fillKey in this.fillStates)) {\n                this.fillStates[fillKey] = {\n                    fillStyle: fillState.fillStyle\n                };\n            }\n        }\n    };\n    /**\n     * @private\n     * @param {number} begin Begin.\n     * @param {number} end End.\n     * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n     */\n    CanvasTextBuilder.prototype.drawChars_ = function (begin, end, declutterGroup) {\n        var strokeState = this.textStrokeState_;\n        var textState = this.textState_;\n        var strokeKey = this.strokeKey_;\n        var textKey = this.textKey_;\n        var fillKey = this.fillKey_;\n        this.saveTextStates_();\n        var pixelRatio = this.pixelRatio;\n        var baseline = TEXT_ALIGN[textState.textBaseline];\n        var offsetY = this.textOffsetY_ * pixelRatio;\n        var text = this.text_;\n        var textScale = textState.scale;\n        var strokeWidth = strokeState ? strokeState.lineWidth * textScale / 2 : 0;\n        this.instructions.push([CanvasInstruction.DRAW_CHARS,\n            begin, end, baseline, declutterGroup,\n            textState.overflow, fillKey, textState.maxAngle,\n            pixelRatio,\n            offsetY, strokeKey, strokeWidth * pixelRatio, text, textKey, 1\n        ]);\n        this.hitDetectionInstructions.push([CanvasInstruction.DRAW_CHARS,\n            begin, end, baseline, declutterGroup,\n            textState.overflow, fillKey, textState.maxAngle,\n            1,\n            offsetY, strokeKey, strokeWidth, text, textKey, 1 / pixelRatio\n        ]);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasTextBuilder.prototype.setTextStyle = function (textStyle, declutterGroups) {\n        var textState, fillState, strokeState;\n        if (!textStyle) {\n            this.text_ = '';\n        }\n        else {\n            this.declutterGroups_ = /** @type {import(\"../canvas.js\").DeclutterGroups} */ (declutterGroups);\n            var textFillStyle = textStyle.getFill();\n            if (!textFillStyle) {\n                fillState = null;\n                this.textFillState_ = fillState;\n            }\n            else {\n                fillState = this.textFillState_;\n                if (!fillState) {\n                    fillState = /** @type {import(\"../canvas.js\").FillState} */ ({});\n                    this.textFillState_ = fillState;\n                }\n                fillState.fillStyle = asColorLike(textFillStyle.getColor() || defaultFillStyle);\n            }\n            var textStrokeStyle = textStyle.getStroke();\n            if (!textStrokeStyle) {\n                strokeState = null;\n                this.textStrokeState_ = strokeState;\n            }\n            else {\n                strokeState = this.textStrokeState_;\n                if (!strokeState) {\n                    strokeState = /** @type {import(\"../canvas.js\").StrokeState} */ ({});\n                    this.textStrokeState_ = strokeState;\n                }\n                var lineDash = textStrokeStyle.getLineDash();\n                var lineDashOffset = textStrokeStyle.getLineDashOffset();\n                var lineWidth = textStrokeStyle.getWidth();\n                var miterLimit = textStrokeStyle.getMiterLimit();\n                strokeState.lineCap = textStrokeStyle.getLineCap() || defaultLineCap;\n                strokeState.lineDash = lineDash ? lineDash.slice() : defaultLineDash;\n                strokeState.lineDashOffset =\n                    lineDashOffset === undefined ? defaultLineDashOffset : lineDashOffset;\n                strokeState.lineJoin = textStrokeStyle.getLineJoin() || defaultLineJoin;\n                strokeState.lineWidth =\n                    lineWidth === undefined ? defaultLineWidth : lineWidth;\n                strokeState.miterLimit =\n                    miterLimit === undefined ? defaultMiterLimit : miterLimit;\n                strokeState.strokeStyle = asColorLike(textStrokeStyle.getColor() || defaultStrokeStyle);\n            }\n            textState = this.textState_;\n            var font = textStyle.getFont() || defaultFont;\n            registerFont(font);\n            var textScale = textStyle.getScale();\n            textState.overflow = textStyle.getOverflow();\n            textState.font = font;\n            textState.maxAngle = textStyle.getMaxAngle();\n            textState.placement = textStyle.getPlacement();\n            textState.textAlign = textStyle.getTextAlign();\n            textState.textBaseline = textStyle.getTextBaseline() || defaultTextBaseline;\n            textState.backgroundFill = textStyle.getBackgroundFill();\n            textState.backgroundStroke = textStyle.getBackgroundStroke();\n            textState.padding = textStyle.getPadding() || defaultPadding;\n            textState.scale = textScale === undefined ? 1 : textScale;\n            var textOffsetX = textStyle.getOffsetX();\n            var textOffsetY = textStyle.getOffsetY();\n            var textRotateWithView = textStyle.getRotateWithView();\n            var textRotation = textStyle.getRotation();\n            this.text_ = textStyle.getText() || '';\n            this.textOffsetX_ = textOffsetX === undefined ? 0 : textOffsetX;\n            this.textOffsetY_ = textOffsetY === undefined ? 0 : textOffsetY;\n            this.textRotateWithView_ = textRotateWithView === undefined ? false : textRotateWithView;\n            this.textRotation_ = textRotation === undefined ? 0 : textRotation;\n            this.strokeKey_ = strokeState ?\n                (typeof strokeState.strokeStyle == 'string' ? strokeState.strokeStyle : getUid(strokeState.strokeStyle)) +\n                    strokeState.lineCap + strokeState.lineDashOffset + '|' + strokeState.lineWidth +\n                    strokeState.lineJoin + strokeState.miterLimit + '[' + strokeState.lineDash.join() + ']' :\n                '';\n            this.textKey_ = textState.font + textState.scale + (textState.textAlign || '?') + (textState.textBaseline || '?');\n            this.fillKey_ = fillState ?\n                (typeof fillState.fillStyle == 'string' ? fillState.fillStyle : ('|' + getUid(fillState.fillStyle))) :\n                '';\n        }\n    };\n    return CanvasTextBuilder;\n}(CanvasBuilder));\nexport default CanvasTextBuilder;\n//# sourceMappingURL=TextBuilder.js.map","/**\n * @module ol/render/canvas/BuilderGroup\n */\nimport { createEmpty } from '../../extent.js';\nimport Builder from './Builder.js';\nimport ImageBuilder from './ImageBuilder.js';\nimport LineStringBuilder from './LineStringBuilder.js';\nimport PolygonBuilder from './PolygonBuilder.js';\nimport TextBuilder from './TextBuilder.js';\n/**\n * @type {Object<import(\"./BuilderType\").default, typeof Builder>}\n */\nvar BATCH_CONSTRUCTORS = {\n    'Circle': PolygonBuilder,\n    'Default': Builder,\n    'Image': ImageBuilder,\n    'LineString': LineStringBuilder,\n    'Polygon': PolygonBuilder,\n    'Text': TextBuilder\n};\nvar BuilderGroup = /** @class */ (function () {\n    /**\n     * @param {number} tolerance Tolerance.\n     * @param {import(\"../../extent.js\").Extent} maxExtent Max extent.\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {boolean} declutter Decluttering enabled.\n     */\n    function BuilderGroup(tolerance, maxExtent, resolution, pixelRatio, declutter) {\n        /**\n         * @type {boolean}\n         * @private\n         */\n        this.declutter_ = declutter;\n        /**\n         * @type {import(\"../canvas.js\").DeclutterGroups}\n         * @private\n         */\n        this.declutterGroups_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.tolerance_ = tolerance;\n        /**\n         * @private\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        this.maxExtent_ = maxExtent;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.pixelRatio_ = pixelRatio;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.resolution_ = resolution;\n        /**\n         * @private\n         * @type {!Object<string, !Object<import(\"./BuilderType\").default, Builder>>}\n         */\n        this.buildersByZIndex_ = {};\n    }\n    /**\n     * @param {boolean} group Group with previous builder.\n     * @return {import(\"../canvas\").DeclutterGroups} The resulting instruction groups.\n     */\n    BuilderGroup.prototype.addDeclutter = function (group) {\n        var declutter = null;\n        if (this.declutter_) {\n            if (group) {\n                declutter = this.declutterGroups_;\n                /** @type {number} */ (declutter[0][4])++;\n            }\n            else {\n                declutter = [createEmpty()];\n                this.declutterGroups_ = declutter;\n                declutter[0].push(1);\n            }\n        }\n        return declutter;\n    };\n    /**\n     * @return {!Object<string, !Object<import(\"./BuilderType\").default, import(\"./Builder.js\").SerializableInstructions>>} The serializable instructions\n     */\n    BuilderGroup.prototype.finish = function () {\n        var builderInstructions = {};\n        for (var zKey in this.buildersByZIndex_) {\n            builderInstructions[zKey] = builderInstructions[zKey] || {};\n            var builders = this.buildersByZIndex_[zKey];\n            for (var builderKey in builders) {\n                var builderInstruction = builders[builderKey].finish();\n                builderInstructions[zKey][builderKey] = builderInstruction;\n            }\n        }\n        return builderInstructions;\n    };\n    /**\n     * @param {number|undefined} zIndex Z index.\n     * @param {import(\"./BuilderType.js\").default} builderType Replay type.\n     * @return {import(\"../VectorContext.js\").default} Replay.\n     */\n    BuilderGroup.prototype.getBuilder = function (zIndex, builderType) {\n        var zIndexKey = zIndex !== undefined ? zIndex.toString() : '0';\n        var replays = this.buildersByZIndex_[zIndexKey];\n        if (replays === undefined) {\n            replays = {};\n            this.buildersByZIndex_[zIndexKey] = replays;\n        }\n        var replay = replays[builderType];\n        if (replay === undefined) {\n            var Constructor = BATCH_CONSTRUCTORS[builderType];\n            replay = new Constructor(this.tolerance_, this.maxExtent_, this.resolution_, this.pixelRatio_);\n            replays[builderType] = replay;\n        }\n        return replay;\n    };\n    return BuilderGroup;\n}());\nexport default BuilderGroup;\n//# sourceMappingURL=BuilderGroup.js.map","/**\n * @module ol/geom/flat/textpath\n */\nimport { lerp } from '../../math.js';\n/**\n * @param {Array<number>} flatCoordinates Path to put text on.\n * @param {number} offset Start offset of the `flatCoordinates`.\n * @param {number} end End offset of the `flatCoordinates`.\n * @param {number} stride Stride.\n * @param {string} text Text to place on the path.\n * @param {number} startM m along the path where the text starts.\n * @param {number} maxAngle Max angle between adjacent chars in radians.\n * @param {number} scale The product of the text scale and the device pixel ratio.\n * @param {function(string, string, Object<string, number>):number} measureAndCacheTextWidth Measure and cache text width.\n * @param {string} font The font.\n * @param {Object<string, number>} cache A cache of measured widths.\n * @return {Array<Array<*>>} The result array (or null if `maxAngle` was\n * exceeded). Entries of the array are x, y, anchorX, angle, chunk.\n */\nexport function drawTextOnPath(flatCoordinates, offset, end, stride, text, startM, maxAngle, scale, measureAndCacheTextWidth, font, cache) {\n    var result = [];\n    // Keep text upright\n    var reverse = flatCoordinates[offset] > flatCoordinates[end - stride];\n    var numChars = text.length;\n    var x1 = flatCoordinates[offset];\n    var y1 = flatCoordinates[offset + 1];\n    offset += stride;\n    var x2 = flatCoordinates[offset];\n    var y2 = flatCoordinates[offset + 1];\n    var segmentM = 0;\n    var segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));\n    var angleChanged = false;\n    var index, previousAngle;\n    for (var i = 0; i < numChars; ++i) {\n        index = reverse ? numChars - i - 1 : i;\n        var char = text[index];\n        var charLength = scale * measureAndCacheTextWidth(font, char, cache);\n        var charM = startM + charLength / 2;\n        while (offset < end - stride && segmentM + segmentLength < charM) {\n            x1 = x2;\n            y1 = y2;\n            offset += stride;\n            x2 = flatCoordinates[offset];\n            y2 = flatCoordinates[offset + 1];\n            segmentM += segmentLength;\n            segmentLength = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));\n        }\n        var segmentPos = charM - segmentM;\n        var angle = Math.atan2(y2 - y1, x2 - x1);\n        if (reverse) {\n            angle += angle > 0 ? -Math.PI : Math.PI;\n        }\n        if (previousAngle !== undefined) {\n            var delta = angle - previousAngle;\n            angleChanged = angleChanged || delta !== 0;\n            delta += (delta > Math.PI) ? -2 * Math.PI : (delta < -Math.PI) ? 2 * Math.PI : 0;\n            if (Math.abs(delta) > maxAngle) {\n                return null;\n            }\n        }\n        previousAngle = angle;\n        var interpolate = segmentPos / segmentLength;\n        var x = lerp(x1, x2, interpolate);\n        var y = lerp(y1, y2, interpolate);\n        result[index] = [x, y, charLength / 2, angle, char];\n        startM += charLength;\n    }\n    return angleChanged ? result : [[result[0][0], result[0][1], result[0][2], result[0][3], text]];\n}\n//# sourceMappingURL=textpath.js.map","/**\n * @module ol/render/canvas/Executor\n */\nimport { equals } from '../../array.js';\nimport { createEmpty, createOrUpdate, createOrUpdateEmpty, extend, intersects } from '../../extent.js';\nimport { lineStringLength } from '../../geom/flat/length.js';\nimport { drawTextOnPath } from '../../geom/flat/textpath.js';\nimport { transform2D } from '../../geom/flat/transform.js';\nimport { drawImageOrLabel, defaultPadding, defaultTextBaseline } from '../canvas.js';\nimport CanvasInstruction from './Instruction.js';\nimport { TEXT_ALIGN } from './TextBuilder.js';\nimport { create as createTransform, compose as composeTransform, apply as applyTransform, setFromArray as transformSetFromArray } from '../../transform.js';\nimport { defaultTextAlign, measureTextHeight, measureAndCacheTextWidth, measureTextWidths } from '../canvas.js';\nimport RBush from 'rbush/rbush.js';\nimport { WORKER_OFFSCREEN_CANVAS } from '../../has.js';\n/**\n * @typedef {Object} SerializableInstructions\n * @property {Array<*>} instructions The rendering instructions.\n * @property {Array<*>} hitDetectionInstructions The rendering hit detection instructions.\n * @property {Array<number>} coordinates The array of all coordinates.\n * @property {!Object<string, import(\"../canvas.js\").TextState>} textStates The text states (decluttering).\n * @property {!Object<string, import(\"../canvas.js\").FillState>} fillStates The fill states (decluttering).\n * @property {!Object<string, import(\"../canvas.js\").StrokeState>} strokeStates The stroke states (decluttering).\n */\n/**\n * @type {import(\"../../extent.js\").Extent}\n */\nvar tmpExtent = createEmpty();\n/**\n * @type {!import(\"../../transform.js\").Transform}\n */\nvar tmpTransform = createTransform();\n/** @type {import(\"../../coordinate.js\").Coordinate} */\nvar p1 = [];\n/** @type {import(\"../../coordinate.js\").Coordinate} */\nvar p2 = [];\n/** @type {import(\"../../coordinate.js\").Coordinate} */\nvar p3 = [];\n/** @type {import(\"../../coordinate.js\").Coordinate} */\nvar p4 = [];\nvar Executor = /** @class */ (function () {\n    /**\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {boolean} overlaps The replay can have overlapping geometries.\n     * @param {SerializableInstructions} instructions The serializable instructions\n     */\n    function Executor(resolution, pixelRatio, overlaps, instructions) {\n        /**\n         * @protected\n         * @type {boolean}\n         */\n        this.overlaps = overlaps;\n        /**\n         * @protected\n         * @type {number}\n         */\n        this.pixelRatio = pixelRatio;\n        /**\n         * @protected\n         * @const\n         * @type {number}\n         */\n        this.resolution = resolution;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        this.alignFill_;\n        /**\n         * @type {Array<*>}\n         */\n        this.declutterItems = [];\n        /**\n         * @protected\n         * @type {Array<*>}\n         */\n        this.instructions = instructions.instructions;\n        /**\n         * @protected\n         * @type {Array<number>}\n         */\n        this.coordinates = instructions.coordinates;\n        /**\n         * @private\n         * @type {!Object<number,import(\"../../coordinate.js\").Coordinate|Array<import(\"../../coordinate.js\").Coordinate>|Array<Array<import(\"../../coordinate.js\").Coordinate>>>}\n         */\n        this.coordinateCache_ = {};\n        /**\n         * @private\n         * @type {!import(\"../../transform.js\").Transform}\n         */\n        this.renderedTransform_ = createTransform();\n        /**\n         * @protected\n         * @type {Array<*>}\n         */\n        this.hitDetectionInstructions = instructions.hitDetectionInstructions;\n        /**\n         * @private\n         * @type {Array<number>}\n         */\n        this.pixelCoordinates_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.viewRotation_ = 0;\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").FillState>}\n         */\n        this.fillStates = instructions.fillStates || {};\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").StrokeState>}\n         */\n        this.strokeStates = instructions.strokeStates || {};\n        /**\n         * @type {!Object<string, import(\"../canvas.js\").TextState>}\n         */\n        this.textStates = instructions.textStates || {};\n        /**\n         * @private\n         * @type {Object<string, Object<string, number>>}\n         */\n        this.widths_ = {};\n        /**\n         * @private\n         * @type {Object<string, import(\"../canvas.js\").Label>}\n         */\n        this.labels_ = {};\n    }\n    /**\n     * @param {string} text Text.\n     * @param {string} textKey Text style key.\n     * @param {string} fillKey Fill style key.\n     * @param {string} strokeKey Stroke style key.\n     * @return {import(\"../canvas.js\").Label} Label.\n     */\n    Executor.prototype.createLabel = function (text, textKey, fillKey, strokeKey) {\n        var key = text + textKey + fillKey + strokeKey;\n        if (this.labels_[key]) {\n            return this.labels_[key];\n        }\n        var strokeState = strokeKey ? this.strokeStates[strokeKey] : null;\n        var fillState = fillKey ? this.fillStates[fillKey] : null;\n        var textState = this.textStates[textKey];\n        var pixelRatio = this.pixelRatio;\n        var scale = textState.scale * pixelRatio;\n        var align = TEXT_ALIGN[textState.textAlign || defaultTextAlign];\n        var strokeWidth = strokeKey && strokeState.lineWidth ? strokeState.lineWidth : 0;\n        var lines = text.split('\\n');\n        var numLines = lines.length;\n        var widths = [];\n        var width = measureTextWidths(textState.font, lines, widths);\n        var lineHeight = measureTextHeight(textState.font);\n        var height = lineHeight * numLines;\n        var renderWidth = width + strokeWidth;\n        var contextInstructions = [];\n        /** @type {import(\"../canvas.js\").Label} */\n        var label = {\n            // make canvas 2 pixels wider to account for italic text width measurement errors\n            width: Math.ceil((renderWidth + 2) * scale),\n            height: Math.ceil((height + strokeWidth) * scale),\n            contextInstructions: contextInstructions\n        };\n        if (scale != 1) {\n            contextInstructions.push('scale', [scale, scale]);\n        }\n        contextInstructions.push('font', textState.font);\n        if (strokeKey) {\n            contextInstructions.push('strokeStyle', strokeState.strokeStyle);\n            contextInstructions.push('lineWidth', strokeWidth);\n            contextInstructions.push('lineCap', strokeState.lineCap);\n            contextInstructions.push('lineJoin', strokeState.lineJoin);\n            contextInstructions.push('miterLimit', strokeState.miterLimit);\n            // eslint-disable-next-line\n            var Context = WORKER_OFFSCREEN_CANVAS ? OffscreenCanvasRenderingContext2D : CanvasRenderingContext2D;\n            if (Context.prototype.setLineDash) {\n                contextInstructions.push('setLineDash', [strokeState.lineDash]);\n                contextInstructions.push('lineDashOffset', strokeState.lineDashOffset);\n            }\n        }\n        if (fillKey) {\n            contextInstructions.push('fillStyle', fillState.fillStyle);\n        }\n        contextInstructions.push('textBaseline', 'middle');\n        contextInstructions.push('textAlign', 'center');\n        var leftRight = (0.5 - align);\n        var x = align * renderWidth + leftRight * strokeWidth;\n        var i;\n        if (strokeKey) {\n            for (i = 0; i < numLines; ++i) {\n                contextInstructions.push('strokeText', [lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight]);\n            }\n        }\n        if (fillKey) {\n            for (i = 0; i < numLines; ++i) {\n                contextInstructions.push('fillText', [lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight]);\n            }\n        }\n        this.labels_[key] = label;\n        return label;\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../coordinate.js\").Coordinate} p1 1st point of the background box.\n     * @param {import(\"../../coordinate.js\").Coordinate} p2 2nd point of the background box.\n     * @param {import(\"../../coordinate.js\").Coordinate} p3 3rd point of the background box.\n     * @param {import(\"../../coordinate.js\").Coordinate} p4 4th point of the background box.\n     * @param {Array<*>} fillInstruction Fill instruction.\n     * @param {Array<*>} strokeInstruction Stroke instruction.\n     */\n    Executor.prototype.replayTextBackground_ = function (context, p1, p2, p3, p4, fillInstruction, strokeInstruction) {\n        context.beginPath();\n        context.moveTo.apply(context, p1);\n        context.lineTo.apply(context, p2);\n        context.lineTo.apply(context, p3);\n        context.lineTo.apply(context, p4);\n        context.lineTo.apply(context, p1);\n        if (fillInstruction) {\n            this.alignFill_ = /** @type {boolean} */ (fillInstruction[2]);\n            this.fill_(context);\n        }\n        if (strokeInstruction) {\n            this.setStrokeStyle_(context, /** @type {Array<*>} */ (strokeInstruction));\n            context.stroke();\n        }\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {number} x X.\n     * @param {number} y Y.\n     * @param {import(\"../canvas.js\").Label|HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} imageOrLabel Image.\n     * @param {number} anchorX Anchor X.\n     * @param {number} anchorY Anchor Y.\n     * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n     * @param {number} height Height.\n     * @param {number} opacity Opacity.\n     * @param {number} originX Origin X.\n     * @param {number} originY Origin Y.\n     * @param {number} rotation Rotation.\n     * @param {number} scale Scale.\n     * @param {boolean} snapToPixel Snap to pixel.\n     * @param {number} width Width.\n     * @param {Array<number>} padding Padding.\n     * @param {Array<*>} fillInstruction Fill instruction.\n     * @param {Array<*>} strokeInstruction Stroke instruction.\n     */\n    Executor.prototype.replayImageOrLabel_ = function (context, x, y, imageOrLabel, anchorX, anchorY, declutterGroup, height, opacity, originX, originY, rotation, scale, snapToPixel, width, padding, fillInstruction, strokeInstruction) {\n        var fillStroke = fillInstruction || strokeInstruction;\n        anchorX *= scale;\n        anchorY *= scale;\n        x -= anchorX;\n        y -= anchorY;\n        var w = (width + originX > imageOrLabel.width) ? imageOrLabel.width - originX : width;\n        var h = (height + originY > imageOrLabel.height) ? imageOrLabel.height - originY : height;\n        var boxW = padding[3] + w * scale + padding[1];\n        var boxH = padding[0] + h * scale + padding[2];\n        var boxX = x - padding[3];\n        var boxY = y - padding[0];\n        if (fillStroke || rotation !== 0) {\n            p1[0] = boxX;\n            p4[0] = boxX;\n            p1[1] = boxY;\n            p2[1] = boxY;\n            p2[0] = boxX + boxW;\n            p3[0] = p2[0];\n            p3[1] = boxY + boxH;\n            p4[1] = p3[1];\n        }\n        var transform = null;\n        if (rotation !== 0) {\n            var centerX = x + anchorX;\n            var centerY = y + anchorY;\n            transform = composeTransform(tmpTransform, centerX, centerY, 1, 1, rotation, -centerX, -centerY);\n            applyTransform(tmpTransform, p1);\n            applyTransform(tmpTransform, p2);\n            applyTransform(tmpTransform, p3);\n            applyTransform(tmpTransform, p4);\n            createOrUpdate(Math.min(p1[0], p2[0], p3[0], p4[0]), Math.min(p1[1], p2[1], p3[1], p4[1]), Math.max(p1[0], p2[0], p3[0], p4[0]), Math.max(p1[1], p2[1], p3[1], p4[1]), tmpExtent);\n        }\n        else {\n            createOrUpdate(boxX, boxY, boxX + boxW, boxY + boxH, tmpExtent);\n        }\n        var canvas = context.canvas;\n        var strokePadding = strokeInstruction ? (strokeInstruction[2] * scale / 2) : 0;\n        var intersects = tmpExtent[0] - strokePadding <= canvas.width && tmpExtent[2] + strokePadding >= 0 &&\n            tmpExtent[1] - strokePadding <= canvas.height && tmpExtent[3] + strokePadding >= 0;\n        if (snapToPixel) {\n            x = Math.round(x);\n            y = Math.round(y);\n        }\n        if (declutterGroup) {\n            if (!intersects && declutterGroup[4] == 1) {\n                return;\n            }\n            extend(declutterGroup, tmpExtent);\n            var declutterArgs = intersects ?\n                [context, transform ? transform.slice(0) : null, opacity, imageOrLabel, originX, originY, w, h, x, y, scale] :\n                null;\n            if (declutterArgs) {\n                if (fillStroke) {\n                    declutterArgs.push(fillInstruction, strokeInstruction, p1.slice(0), p2.slice(0), p3.slice(0), p4.slice(0));\n                }\n                declutterGroup.push(declutterArgs);\n            }\n        }\n        else if (intersects) {\n            if (fillStroke) {\n                this.replayTextBackground_(context, p1, p2, p3, p4, \n                /** @type {Array<*>} */ (fillInstruction), \n                /** @type {Array<*>} */ (strokeInstruction));\n            }\n            drawImageOrLabel(context, transform, opacity, imageOrLabel, originX, originY, w, h, x, y, scale);\n        }\n    };\n    /**\n     * @private\n     * @param {CanvasRenderingContext2D} context Context.\n     */\n    Executor.prototype.fill_ = function (context) {\n        if (this.alignFill_) {\n            var origin_1 = applyTransform(this.renderedTransform_, [0, 0]);\n            var repeatSize = 512 * this.pixelRatio;\n            context.save();\n            context.translate(origin_1[0] % repeatSize, origin_1[1] % repeatSize);\n            context.rotate(this.viewRotation_);\n        }\n        context.fill();\n        if (this.alignFill_) {\n            context.restore();\n        }\n    };\n    /**\n     * @private\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {Array<*>} instruction Instruction.\n     */\n    Executor.prototype.setStrokeStyle_ = function (context, instruction) {\n        context.strokeStyle = /** @type {import(\"../../colorlike.js\").ColorLike} */ (instruction[1]);\n        context.lineWidth = /** @type {number} */ (instruction[2]);\n        context.lineCap = /** @type {CanvasLineCap} */ (instruction[3]);\n        context.lineJoin = /** @type {CanvasLineJoin} */ (instruction[4]);\n        context.miterLimit = /** @type {number} */ (instruction[5]);\n        if (context.setLineDash) {\n            context.lineDashOffset = /** @type {number} */ (instruction[7]);\n            context.setLineDash(/** @type {Array<number>} */ (instruction[6]));\n        }\n    };\n    /**\n     * @param {import(\"../canvas.js\").DeclutterGroup} declutterGroup Declutter group.\n     * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n     * @param {number} opacity Layer opacity.\n     * @param {?} declutterTree Declutter tree.\n     * @return {?} Declutter tree.\n     */\n    Executor.prototype.renderDeclutter = function (declutterGroup, feature, opacity, declutterTree) {\n        if (declutterGroup && declutterGroup.length > 5) {\n            var groupCount = declutterGroup[4];\n            if (groupCount == 1 || groupCount == declutterGroup.length - 5) {\n                /** @type {import(\"../../structs/RBush.js\").Entry} */\n                var box = {\n                    minX: /** @type {number} */ (declutterGroup[0]),\n                    minY: /** @type {number} */ (declutterGroup[1]),\n                    maxX: /** @type {number} */ (declutterGroup[2]),\n                    maxY: /** @type {number} */ (declutterGroup[3]),\n                    value: feature\n                };\n                if (!declutterTree) {\n                    declutterTree = new RBush(9);\n                }\n                if (!declutterTree.collides(box)) {\n                    declutterTree.insert(box);\n                    for (var j = 5, jj = declutterGroup.length; j < jj; ++j) {\n                        var declutterData = /** @type {Array} */ (declutterGroup[j]);\n                        var context = declutterData[0];\n                        var currentAlpha = context.globalAlpha;\n                        if (currentAlpha !== opacity) {\n                            context.globalAlpha = opacity;\n                        }\n                        if (declutterData.length > 11) {\n                            this.replayTextBackground_(declutterData[0], declutterData[13], declutterData[14], declutterData[15], declutterData[16], declutterData[11], declutterData[12]);\n                        }\n                        drawImageOrLabel.apply(undefined, declutterData);\n                        if (currentAlpha !== opacity) {\n                            context.globalAlpha = currentAlpha;\n                        }\n                    }\n                }\n                declutterGroup.length = 5;\n                createOrUpdateEmpty(declutterGroup);\n            }\n        }\n        return declutterTree;\n    };\n    /**\n     * @private\n     * @param {string} text The text to draw.\n     * @param {string} textKey The key of the text state.\n     * @param {string} strokeKey The key for the stroke state.\n     * @param {string} fillKey The key for the fill state.\n     * @return {{label: import(\"../canvas.js\").Label, anchorX: number, anchorY: number}} The text image and its anchor.\n     */\n    Executor.prototype.drawLabelWithPointPlacement_ = function (text, textKey, strokeKey, fillKey) {\n        var textState = this.textStates[textKey];\n        var label = this.createLabel(text, textKey, fillKey, strokeKey);\n        var strokeState = this.strokeStates[strokeKey];\n        var pixelRatio = this.pixelRatio;\n        var align = TEXT_ALIGN[textState.textAlign || defaultTextAlign];\n        var baseline = TEXT_ALIGN[textState.textBaseline || defaultTextBaseline];\n        var strokeWidth = strokeState && strokeState.lineWidth ? strokeState.lineWidth : 0;\n        // Remove the 2 pixels we added in createLabel() for the anchor\n        var width = label.width / pixelRatio - 2 * textState.scale;\n        var anchorX = align * width + 2 * (0.5 - align) * strokeWidth;\n        var anchorY = baseline * label.height / pixelRatio + 2 * (0.5 - baseline) * strokeWidth;\n        return {\n            label: label,\n            anchorX: anchorX,\n            anchorY: anchorY\n        };\n    };\n    /**\n     * @private\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @param {Array<*>} instructions Instructions array.\n     * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n     * @param {function(import(\"../../Feature.js\").FeatureLike): T|undefined} featureCallback Feature callback.\n     * @param {import(\"../../extent.js\").Extent=} opt_hitExtent Only check features that intersect this\n     *     extent.\n     * @return {T|undefined} Callback result.\n     * @template T\n     */\n    Executor.prototype.execute_ = function (context, transform, instructions, snapToPixel, featureCallback, opt_hitExtent) {\n        this.declutterItems.length = 0;\n        /** @type {Array<number>} */\n        var pixelCoordinates;\n        if (this.pixelCoordinates_ && equals(transform, this.renderedTransform_)) {\n            pixelCoordinates = this.pixelCoordinates_;\n        }\n        else {\n            if (!this.pixelCoordinates_) {\n                this.pixelCoordinates_ = [];\n            }\n            pixelCoordinates = transform2D(this.coordinates, 0, this.coordinates.length, 2, transform, this.pixelCoordinates_);\n            transformSetFromArray(this.renderedTransform_, transform);\n        }\n        var i = 0; // instruction index\n        var ii = instructions.length; // end of instructions\n        var d = 0; // data index\n        var dd; // end of per-instruction data\n        var anchorX, anchorY, prevX, prevY, roundX, roundY, declutterGroup, declutterGroups, image, text, textKey;\n        var strokeKey, fillKey;\n        var pendingFill = 0;\n        var pendingStroke = 0;\n        var lastFillInstruction = null;\n        var lastStrokeInstruction = null;\n        var coordinateCache = this.coordinateCache_;\n        var viewRotation = this.viewRotation_;\n        var viewRotationFromTransform = Math.round(Math.atan2(-transform[1], transform[0]) * 1e12) / 1e12;\n        var state = /** @type {import(\"../../render.js\").State} */ ({\n            context: context,\n            pixelRatio: this.pixelRatio,\n            resolution: this.resolution,\n            rotation: viewRotation\n        });\n        // When the batch size gets too big, performance decreases. 200 is a good\n        // balance between batch size and number of fill/stroke instructions.\n        var batchSize = this.instructions != instructions || this.overlaps ? 0 : 200;\n        var /** @type {import(\"../../Feature.js\").FeatureLike} */ feature;\n        var x, y;\n        while (i < ii) {\n            var instruction = instructions[i];\n            var type = /** @type {CanvasInstruction} */ (instruction[0]);\n            switch (type) {\n                case CanvasInstruction.BEGIN_GEOMETRY:\n                    feature = /** @type {import(\"../../Feature.js\").FeatureLike} */ (instruction[1]);\n                    if (!feature.getGeometry()) {\n                        i = /** @type {number} */ (instruction[2]);\n                    }\n                    else if (opt_hitExtent !== undefined && !intersects(opt_hitExtent, instruction[3])) {\n                        i = /** @type {number} */ (instruction[2]) + 1;\n                    }\n                    else {\n                        ++i;\n                    }\n                    break;\n                case CanvasInstruction.BEGIN_PATH:\n                    if (pendingFill > batchSize) {\n                        this.fill_(context);\n                        pendingFill = 0;\n                    }\n                    if (pendingStroke > batchSize) {\n                        context.stroke();\n                        pendingStroke = 0;\n                    }\n                    if (!pendingFill && !pendingStroke) {\n                        context.beginPath();\n                        prevX = NaN;\n                        prevY = NaN;\n                    }\n                    ++i;\n                    break;\n                case CanvasInstruction.CIRCLE:\n                    d = /** @type {number} */ (instruction[1]);\n                    var x1 = pixelCoordinates[d];\n                    var y1 = pixelCoordinates[d + 1];\n                    var x2 = pixelCoordinates[d + 2];\n                    var y2 = pixelCoordinates[d + 3];\n                    var dx = x2 - x1;\n                    var dy = y2 - y1;\n                    var r = Math.sqrt(dx * dx + dy * dy);\n                    context.moveTo(x1 + r, y1);\n                    context.arc(x1, y1, r, 0, 2 * Math.PI, true);\n                    ++i;\n                    break;\n                case CanvasInstruction.CLOSE_PATH:\n                    context.closePath();\n                    ++i;\n                    break;\n                case CanvasInstruction.CUSTOM:\n                    d = /** @type {number} */ (instruction[1]);\n                    dd = instruction[2];\n                    var geometry = /** @type {import(\"../../geom/SimpleGeometry.js\").default} */ (instruction[3]);\n                    var renderer = instruction[4];\n                    var fn = instruction.length == 6 ? instruction[5] : undefined;\n                    state.geometry = geometry;\n                    state.feature = feature;\n                    if (!(i in coordinateCache)) {\n                        coordinateCache[i] = [];\n                    }\n                    var coords = coordinateCache[i];\n                    if (fn) {\n                        fn(pixelCoordinates, d, dd, 2, coords);\n                    }\n                    else {\n                        coords[0] = pixelCoordinates[d];\n                        coords[1] = pixelCoordinates[d + 1];\n                        coords.length = 2;\n                    }\n                    renderer(coords, state);\n                    ++i;\n                    break;\n                case CanvasInstruction.DRAW_IMAGE:\n                    d = /** @type {number} */ (instruction[1]);\n                    dd = /** @type {number} */ (instruction[2]);\n                    image = /** @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement} */ (instruction[3]);\n                    // Remaining arguments in DRAW_IMAGE are in alphabetical order\n                    anchorX = /** @type {number} */ (instruction[4]);\n                    anchorY = /** @type {number} */ (instruction[5]);\n                    declutterGroups = featureCallback ? null : instruction[6];\n                    var height = /** @type {number} */ (instruction[7]);\n                    var opacity = /** @type {number} */ (instruction[8]);\n                    var originX = /** @type {number} */ (instruction[9]);\n                    var originY = /** @type {number} */ (instruction[10]);\n                    var rotateWithView = /** @type {boolean} */ (instruction[11]);\n                    var rotation = /** @type {number} */ (instruction[12]);\n                    var scale = /** @type {number} */ (instruction[13]);\n                    var width = /** @type {number} */ (instruction[14]);\n                    if (!image && instruction.length >= 19) {\n                        // create label images\n                        text = /** @type {string} */ (instruction[18]);\n                        textKey = /** @type {string} */ (instruction[19]);\n                        strokeKey = /** @type {string} */ (instruction[20]);\n                        fillKey = /** @type {string} */ (instruction[21]);\n                        var labelWithAnchor = this.drawLabelWithPointPlacement_(text, textKey, strokeKey, fillKey);\n                        image = labelWithAnchor.label;\n                        instruction[3] = image;\n                        var textOffsetX = /** @type {number} */ (instruction[22]);\n                        anchorX = (labelWithAnchor.anchorX - textOffsetX) * this.pixelRatio;\n                        instruction[4] = anchorX;\n                        var textOffsetY = /** @type {number} */ (instruction[23]);\n                        anchorY = (labelWithAnchor.anchorY - textOffsetY) * this.pixelRatio;\n                        instruction[5] = anchorY;\n                        height = image.height;\n                        instruction[7] = height;\n                        width = image.width;\n                        instruction[14] = width;\n                    }\n                    var geometryWidths = void 0;\n                    if (instruction.length > 24) {\n                        geometryWidths = /** @type {number} */ (instruction[24]);\n                    }\n                    var padding = void 0, backgroundFill = void 0, backgroundStroke = void 0;\n                    if (instruction.length > 16) {\n                        padding = /** @type {Array<number>} */ (instruction[15]);\n                        backgroundFill = /** @type {boolean} */ (instruction[16]);\n                        backgroundStroke = /** @type {boolean} */ (instruction[17]);\n                    }\n                    else {\n                        padding = defaultPadding;\n                        backgroundFill = false;\n                        backgroundStroke = false;\n                    }\n                    if (rotateWithView && viewRotationFromTransform) {\n                        // Canvas is expected to be rotated to reverse view rotation.\n                        rotation += viewRotation;\n                    }\n                    else if (!rotateWithView && !viewRotationFromTransform) {\n                        // Canvas is not rotated, images need to be rotated back to be north-up.\n                        rotation -= viewRotation;\n                    }\n                    var widthIndex = 0;\n                    var declutterGroupIndex = 0;\n                    for (; d < dd; d += 2) {\n                        if (geometryWidths && geometryWidths[widthIndex++] < width / this.pixelRatio) {\n                            continue;\n                        }\n                        if (declutterGroups) {\n                            var index = Math.floor(declutterGroupIndex);\n                            if (declutterGroups.length < index + 1) {\n                                declutterGroup = createEmpty();\n                                declutterGroup.push(declutterGroups[0][4]);\n                                declutterGroups.push(declutterGroup);\n                            }\n                            declutterGroup = declutterGroups[index];\n                        }\n                        this.replayImageOrLabel_(context, pixelCoordinates[d], pixelCoordinates[d + 1], image, anchorX, anchorY, declutterGroup, height, opacity, originX, originY, rotation, scale, snapToPixel, width, padding, backgroundFill ? /** @type {Array<*>} */ (lastFillInstruction) : null, backgroundStroke ? /** @type {Array<*>} */ (lastStrokeInstruction) : null);\n                        if (declutterGroup) {\n                            if (declutterGroupIndex === Math.floor(declutterGroupIndex)) {\n                                this.declutterItems.push(this, declutterGroup, feature);\n                            }\n                            declutterGroupIndex += 1 / declutterGroup[4];\n                        }\n                    }\n                    ++i;\n                    break;\n                case CanvasInstruction.DRAW_CHARS:\n                    var begin = /** @type {number} */ (instruction[1]);\n                    var end = /** @type {number} */ (instruction[2]);\n                    var baseline = /** @type {number} */ (instruction[3]);\n                    declutterGroup = featureCallback ? null : instruction[4];\n                    var overflow = /** @type {number} */ (instruction[5]);\n                    fillKey = /** @type {string} */ (instruction[6]);\n                    var maxAngle = /** @type {number} */ (instruction[7]);\n                    var measurePixelRatio = /** @type {number} */ (instruction[8]);\n                    var offsetY = /** @type {number} */ (instruction[9]);\n                    strokeKey = /** @type {string} */ (instruction[10]);\n                    var strokeWidth = /** @type {number} */ (instruction[11]);\n                    text = /** @type {string} */ (instruction[12]);\n                    textKey = /** @type {string} */ (instruction[13]);\n                    var pixelRatioScale = /** @type {number} */ (instruction[14]);\n                    var textState = this.textStates[textKey];\n                    var font = textState.font;\n                    var textScale = textState.scale * measurePixelRatio;\n                    var cachedWidths = void 0;\n                    if (font in this.widths_) {\n                        cachedWidths = this.widths_[font];\n                    }\n                    else {\n                        cachedWidths = {};\n                        this.widths_[font] = cachedWidths;\n                    }\n                    var pathLength = lineStringLength(pixelCoordinates, begin, end, 2);\n                    var textLength = textScale * measureAndCacheTextWidth(font, text, cachedWidths);\n                    if (overflow || textLength <= pathLength) {\n                        var textAlign = this.textStates[textKey].textAlign;\n                        var startM = (pathLength - textLength) * TEXT_ALIGN[textAlign];\n                        var parts = drawTextOnPath(pixelCoordinates, begin, end, 2, text, startM, maxAngle, textScale, measureAndCacheTextWidth, font, cachedWidths);\n                        if (parts) {\n                            var c = void 0, cc = void 0, chars = void 0, label = void 0, part = void 0;\n                            if (strokeKey) {\n                                for (c = 0, cc = parts.length; c < cc; ++c) {\n                                    part = parts[c]; // x, y, anchorX, rotation, chunk\n                                    chars = /** @type {string} */ (part[4]);\n                                    label = this.createLabel(chars, textKey, '', strokeKey);\n                                    anchorX = /** @type {number} */ (part[2]) + strokeWidth;\n                                    anchorY = baseline * label.height + (0.5 - baseline) * 2 * strokeWidth - offsetY;\n                                    this.replayImageOrLabel_(context, \n                                    /** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label, anchorX, anchorY, declutterGroup, label.height, 1, 0, 0, \n                                    /** @type {number} */ (part[3]), pixelRatioScale, false, label.width, defaultPadding, null, null);\n                                }\n                            }\n                            if (fillKey) {\n                                for (c = 0, cc = parts.length; c < cc; ++c) {\n                                    part = parts[c]; // x, y, anchorX, rotation, chunk\n                                    chars = /** @type {string} */ (part[4]);\n                                    label = this.createLabel(chars, textKey, fillKey, '');\n                                    anchorX = /** @type {number} */ (part[2]);\n                                    anchorY = baseline * label.height - offsetY;\n                                    this.replayImageOrLabel_(context, \n                                    /** @type {number} */ (part[0]), /** @type {number} */ (part[1]), label, anchorX, anchorY, declutterGroup, label.height, 1, 0, 0, \n                                    /** @type {number} */ (part[3]), pixelRatioScale, false, label.width, defaultPadding, null, null);\n                                }\n                            }\n                        }\n                    }\n                    this.declutterItems.push(this, declutterGroup, feature);\n                    ++i;\n                    break;\n                case CanvasInstruction.END_GEOMETRY:\n                    if (featureCallback !== undefined) {\n                        feature = /** @type {import(\"../../Feature.js\").FeatureLike} */ (instruction[1]);\n                        var result = featureCallback(feature);\n                        if (result) {\n                            return result;\n                        }\n                    }\n                    ++i;\n                    break;\n                case CanvasInstruction.FILL:\n                    if (batchSize) {\n                        pendingFill++;\n                    }\n                    else {\n                        this.fill_(context);\n                    }\n                    ++i;\n                    break;\n                case CanvasInstruction.MOVE_TO_LINE_TO:\n                    d = /** @type {number} */ (instruction[1]);\n                    dd = /** @type {number} */ (instruction[2]);\n                    x = pixelCoordinates[d];\n                    y = pixelCoordinates[d + 1];\n                    roundX = (x + 0.5) | 0;\n                    roundY = (y + 0.5) | 0;\n                    if (roundX !== prevX || roundY !== prevY) {\n                        context.moveTo(x, y);\n                        prevX = roundX;\n                        prevY = roundY;\n                    }\n                    for (d += 2; d < dd; d += 2) {\n                        x = pixelCoordinates[d];\n                        y = pixelCoordinates[d + 1];\n                        roundX = (x + 0.5) | 0;\n                        roundY = (y + 0.5) | 0;\n                        if (d == dd - 2 || roundX !== prevX || roundY !== prevY) {\n                            context.lineTo(x, y);\n                            prevX = roundX;\n                            prevY = roundY;\n                        }\n                    }\n                    ++i;\n                    break;\n                case CanvasInstruction.SET_FILL_STYLE:\n                    lastFillInstruction = instruction;\n                    this.alignFill_ = instruction[2];\n                    if (pendingFill) {\n                        this.fill_(context);\n                        pendingFill = 0;\n                        if (pendingStroke) {\n                            context.stroke();\n                            pendingStroke = 0;\n                        }\n                    }\n                    context.fillStyle = /** @type {import(\"../../colorlike.js\").ColorLike} */ (instruction[1]);\n                    ++i;\n                    break;\n                case CanvasInstruction.SET_STROKE_STYLE:\n                    lastStrokeInstruction = instruction;\n                    if (pendingStroke) {\n                        context.stroke();\n                        pendingStroke = 0;\n                    }\n                    this.setStrokeStyle_(context, /** @type {Array<*>} */ (instruction));\n                    ++i;\n                    break;\n                case CanvasInstruction.STROKE:\n                    if (batchSize) {\n                        pendingStroke++;\n                    }\n                    else {\n                        context.stroke();\n                    }\n                    ++i;\n                    break;\n                default:\n                    ++i; // consume the instruction anyway, to avoid an infinite loop\n                    break;\n            }\n        }\n        if (pendingFill) {\n            this.fill_(context);\n        }\n        if (pendingStroke) {\n            context.stroke();\n        }\n        return undefined;\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @param {number} viewRotation View rotation.\n     * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n     */\n    Executor.prototype.execute = function (context, transform, viewRotation, snapToPixel) {\n        this.viewRotation_ = viewRotation;\n        this.execute_(context, transform, this.instructions, snapToPixel, undefined, undefined);\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @param {number} viewRotation View rotation.\n     * @param {function(import(\"../../Feature.js\").FeatureLike): T=} opt_featureCallback\n     *     Feature callback.\n     * @param {import(\"../../extent.js\").Extent=} opt_hitExtent Only check features that intersect this\n     *     extent.\n     * @return {T|undefined} Callback result.\n     * @template T\n     */\n    Executor.prototype.executeHitDetection = function (context, transform, viewRotation, opt_featureCallback, opt_hitExtent) {\n        this.viewRotation_ = viewRotation;\n        return this.execute_(context, transform, this.hitDetectionInstructions, true, opt_featureCallback, opt_hitExtent);\n    };\n    return Executor;\n}());\nexport default Executor;\n//# sourceMappingURL=Executor.js.map","/**\n * @module ol/render/canvas/ExecutorGroup\n */\nimport { numberSafeCompareFunction } from '../../array.js';\nimport { createCanvasContext2D } from '../../dom.js';\nimport { buffer, createEmpty, extendCoordinate } from '../../extent.js';\nimport { transform2D } from '../../geom/flat/transform.js';\nimport { isEmpty } from '../../obj.js';\nimport BuilderType from './BuilderType.js';\nimport { create as createTransform, compose as composeTransform } from '../../transform.js';\nimport Executor from './Executor.js';\n/**\n * @const\n * @type {Array<BuilderType>}\n */\nvar ORDER = [\n    BuilderType.POLYGON,\n    BuilderType.CIRCLE,\n    BuilderType.LINE_STRING,\n    BuilderType.IMAGE,\n    BuilderType.TEXT,\n    BuilderType.DEFAULT\n];\nvar ExecutorGroup = /** @class */ (function () {\n    /**\n     * @param {import(\"../../extent.js\").Extent} maxExtent Max extent for clipping. When a\n     * `maxExtent` was set on the Buillder for this executor group, the same `maxExtent`\n     * should be set here, unless the target context does not exceet that extent (which\n     * can be the case when rendering to tiles).\n     * @param {number} resolution Resolution.\n     * @param {number} pixelRatio Pixel ratio.\n     * @param {boolean} overlaps The executor group can have overlapping geometries.\n     * @param {!Object<string, !Object<BuilderType, import(\"./Builder.js\").SerializableInstructions>>} allInstructions\n     * The serializable instructions.\n     * @param {number=} opt_renderBuffer Optional rendering buffer.\n     */\n    function ExecutorGroup(maxExtent, resolution, pixelRatio, overlaps, allInstructions, opt_renderBuffer) {\n        /**\n         * @private\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        this.maxExtent_ = maxExtent;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        this.overlaps_ = overlaps;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.pixelRatio_ = pixelRatio;\n        /**\n         * @private\n         * @type {number}\n         */\n        this.resolution_ = resolution;\n        /**\n         * @private\n         * @type {number|undefined}\n         */\n        this.renderBuffer_ = opt_renderBuffer;\n        /**\n         * @private\n         * @type {!Object<string, !Object<BuilderType, import(\"./Executor\").default>>}\n         */\n        this.executorsByZIndex_ = {};\n        /**\n         * @private\n         * @type {CanvasRenderingContext2D}\n         */\n        this.hitDetectionContext_ = null;\n        /**\n         * @private\n         * @type {import(\"../../transform.js\").Transform}\n         */\n        this.hitDetectionTransform_ = createTransform();\n        this.createExecutors_(allInstructions);\n    }\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     */\n    ExecutorGroup.prototype.clip = function (context, transform) {\n        var flatClipCoords = this.getClipCoords(transform);\n        context.beginPath();\n        context.moveTo(flatClipCoords[0], flatClipCoords[1]);\n        context.lineTo(flatClipCoords[2], flatClipCoords[3]);\n        context.lineTo(flatClipCoords[4], flatClipCoords[5]);\n        context.lineTo(flatClipCoords[6], flatClipCoords[7]);\n        context.clip();\n    };\n    /**\n     * Create executors and populate them using the provided instructions.\n     * @private\n     * @param {!Object<string, !Object<BuilderType, import(\"./Builder.js\").SerializableInstructions>>} allInstructions The serializable instructions\n     */\n    ExecutorGroup.prototype.createExecutors_ = function (allInstructions) {\n        for (var zIndex in allInstructions) {\n            var executors = this.executorsByZIndex_[zIndex];\n            if (executors === undefined) {\n                executors = {};\n                this.executorsByZIndex_[zIndex] = executors;\n            }\n            var instructionByZindex = allInstructions[zIndex];\n            for (var builderType in instructionByZindex) {\n                var instructions = instructionByZindex[builderType];\n                executors[builderType] = new Executor(this.resolution_, this.pixelRatio_, this.overlaps_, instructions);\n            }\n        }\n    };\n    /**\n     * @param {Array<BuilderType>} executors Executors.\n     * @return {boolean} Has executors of the provided types.\n     */\n    ExecutorGroup.prototype.hasExecutors = function (executors) {\n        for (var zIndex in this.executorsByZIndex_) {\n            var candidates = this.executorsByZIndex_[zIndex];\n            for (var i = 0, ii = executors.length; i < ii; ++i) {\n                if (executors[i] in candidates) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    };\n    /**\n     * @param {import(\"../../coordinate.js\").Coordinate} coordinate Coordinate.\n     * @param {number} resolution Resolution.\n     * @param {number} rotation Rotation.\n     * @param {number} hitTolerance Hit tolerance in pixels.\n     * @param {function(import(\"../../Feature.js\").FeatureLike): T} callback Feature callback.\n     * @param {Array<import(\"../../Feature.js\").FeatureLike>} declutteredFeatures Decluttered features.\n     * @return {T|undefined} Callback result.\n     * @template T\n     */\n    ExecutorGroup.prototype.forEachFeatureAtCoordinate = function (coordinate, resolution, rotation, hitTolerance, callback, declutteredFeatures) {\n        hitTolerance = Math.round(hitTolerance);\n        var contextSize = hitTolerance * 2 + 1;\n        var transform = composeTransform(this.hitDetectionTransform_, hitTolerance + 0.5, hitTolerance + 0.5, 1 / resolution, -1 / resolution, -rotation, -coordinate[0], -coordinate[1]);\n        if (!this.hitDetectionContext_) {\n            this.hitDetectionContext_ = createCanvasContext2D(contextSize, contextSize);\n        }\n        var context = this.hitDetectionContext_;\n        if (context.canvas.width !== contextSize || context.canvas.height !== contextSize) {\n            context.canvas.width = contextSize;\n            context.canvas.height = contextSize;\n        }\n        else {\n            context.clearRect(0, 0, contextSize, contextSize);\n        }\n        /**\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        var hitExtent;\n        if (this.renderBuffer_ !== undefined) {\n            hitExtent = createEmpty();\n            extendCoordinate(hitExtent, coordinate);\n            buffer(hitExtent, resolution * (this.renderBuffer_ + hitTolerance), hitExtent);\n        }\n        var mask = getCircleArray(hitTolerance);\n        var builderType;\n        /**\n         * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n         * @return {?} Callback result.\n         */\n        function featureCallback(feature) {\n            var imageData = context.getImageData(0, 0, contextSize, contextSize).data;\n            for (var i_1 = 0; i_1 < contextSize; i_1++) {\n                for (var j_1 = 0; j_1 < contextSize; j_1++) {\n                    if (mask[i_1][j_1]) {\n                        if (imageData[(j_1 * contextSize + i_1) * 4 + 3] > 0) {\n                            var result_1 = void 0;\n                            if (!(declutteredFeatures && (builderType == BuilderType.IMAGE || builderType == BuilderType.TEXT)) ||\n                                declutteredFeatures.indexOf(feature) !== -1) {\n                                result_1 = callback(feature);\n                            }\n                            if (result_1) {\n                                return result_1;\n                            }\n                            else {\n                                context.clearRect(0, 0, contextSize, contextSize);\n                                return undefined;\n                            }\n                        }\n                    }\n                }\n            }\n        }\n        /** @type {Array<number>} */\n        var zs = Object.keys(this.executorsByZIndex_).map(Number);\n        zs.sort(numberSafeCompareFunction);\n        var i, j, executors, executor, result;\n        for (i = zs.length - 1; i >= 0; --i) {\n            var zIndexKey = zs[i].toString();\n            executors = this.executorsByZIndex_[zIndexKey];\n            for (j = ORDER.length - 1; j >= 0; --j) {\n                builderType = ORDER[j];\n                executor = executors[builderType];\n                if (executor !== undefined) {\n                    result = executor.executeHitDetection(context, transform, rotation, featureCallback, hitExtent);\n                    if (result) {\n                        return result;\n                    }\n                }\n            }\n        }\n        return undefined;\n    };\n    /**\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @return {Array<number>} Clip coordinates.\n     */\n    ExecutorGroup.prototype.getClipCoords = function (transform) {\n        var maxExtent = this.maxExtent_;\n        if (!maxExtent) {\n            return null;\n        }\n        var minX = maxExtent[0];\n        var minY = maxExtent[1];\n        var maxX = maxExtent[2];\n        var maxY = maxExtent[3];\n        var flatClipCoords = [minX, minY, minX, maxY, maxX, maxY, maxX, minY];\n        transform2D(flatClipCoords, 0, 8, 2, transform, flatClipCoords);\n        return flatClipCoords;\n    };\n    /**\n     * @return {boolean} Is empty.\n     */\n    ExecutorGroup.prototype.isEmpty = function () {\n        return isEmpty(this.executorsByZIndex_);\n    };\n    /**\n     * @param {CanvasRenderingContext2D} context Context.\n     * @param {import(\"../../transform.js\").Transform} transform Transform.\n     * @param {number} viewRotation View rotation.\n     * @param {boolean} snapToPixel Snap point symbols and test to integer pixel.\n     * @param {Array<BuilderType>=} opt_builderTypes Ordered replay types to replay.\n     *     Default is {@link module:ol/render/replay~ORDER}\n     * @param {Object<string, import(\"../canvas.js\").DeclutterGroup>=} opt_declutterReplays Declutter replays.\n     */\n    ExecutorGroup.prototype.execute = function (context, transform, viewRotation, snapToPixel, opt_builderTypes, opt_declutterReplays) {\n        /** @type {Array<number>} */\n        var zs = Object.keys(this.executorsByZIndex_).map(Number);\n        zs.sort(numberSafeCompareFunction);\n        // setup clipping so that the parts of over-simplified geometries are not\n        // visible outside the current extent when panning\n        if (this.maxExtent_) {\n            context.save();\n            this.clip(context, transform);\n        }\n        var builderTypes = opt_builderTypes ? opt_builderTypes : ORDER;\n        var i, ii, j, jj, replays, replay;\n        for (i = 0, ii = zs.length; i < ii; ++i) {\n            var zIndexKey = zs[i].toString();\n            replays = this.executorsByZIndex_[zIndexKey];\n            for (j = 0, jj = builderTypes.length; j < jj; ++j) {\n                var builderType = builderTypes[j];\n                replay = replays[builderType];\n                if (replay !== undefined) {\n                    if (opt_declutterReplays &&\n                        (builderType == BuilderType.IMAGE || builderType == BuilderType.TEXT)) {\n                        var declutter = opt_declutterReplays[zIndexKey];\n                        if (!declutter) {\n                            opt_declutterReplays[zIndexKey] = [replay, transform.slice(0)];\n                        }\n                        else {\n                            declutter.push(replay, transform.slice(0));\n                        }\n                    }\n                    else {\n                        replay.execute(context, transform, viewRotation, snapToPixel);\n                    }\n                }\n            }\n        }\n        if (this.maxExtent_) {\n            context.restore();\n        }\n    };\n    return ExecutorGroup;\n}());\n/**\n * This cache is used for storing calculated pixel circles for increasing performance.\n * It is a static property to allow each Replaygroup to access it.\n * @type {Object<number, Array<Array<(boolean|undefined)>>>}\n */\nvar circleArrayCache = {\n    0: [[true]]\n};\n/**\n * This method fills a row in the array from the given coordinate to the\n * middle with `true`.\n * @param {Array<Array<(boolean|undefined)>>} array The array that will be altered.\n * @param {number} x X coordinate.\n * @param {number} y Y coordinate.\n */\nfunction fillCircleArrayRowToMiddle(array, x, y) {\n    var i;\n    var radius = Math.floor(array.length / 2);\n    if (x >= radius) {\n        for (i = radius; i < x; i++) {\n            array[i][y] = true;\n        }\n    }\n    else if (x < radius) {\n        for (i = x + 1; i < radius; i++) {\n            array[i][y] = true;\n        }\n    }\n}\n/**\n * This methods creates a circle inside a fitting array. Points inside the\n * circle are marked by true, points on the outside are undefined.\n * It uses the midpoint circle algorithm.\n * A cache is used to increase performance.\n * @param {number} radius Radius.\n * @returns {Array<Array<(boolean|undefined)>>} An array with marked circle points.\n */\nexport function getCircleArray(radius) {\n    if (circleArrayCache[radius] !== undefined) {\n        return circleArrayCache[radius];\n    }\n    var arraySize = radius * 2 + 1;\n    var arr = new Array(arraySize);\n    for (var i = 0; i < arraySize; i++) {\n        arr[i] = new Array(arraySize);\n    }\n    var x = radius;\n    var y = 0;\n    var error = 0;\n    while (x >= y) {\n        fillCircleArrayRowToMiddle(arr, radius + x, radius + y);\n        fillCircleArrayRowToMiddle(arr, radius + y, radius + x);\n        fillCircleArrayRowToMiddle(arr, radius - y, radius + x);\n        fillCircleArrayRowToMiddle(arr, radius - x, radius + y);\n        fillCircleArrayRowToMiddle(arr, radius - x, radius - y);\n        fillCircleArrayRowToMiddle(arr, radius - y, radius - x);\n        fillCircleArrayRowToMiddle(arr, radius + y, radius - x);\n        fillCircleArrayRowToMiddle(arr, radius + x, radius - y);\n        y++;\n        error += 1 + 2 * y;\n        if (2 * (error - x) + 1 > 0) {\n            x -= 1;\n            error += 1 - 2 * x;\n        }\n    }\n    circleArrayCache[radius] = arr;\n    return arr;\n}\n/**\n * @param {!Object<string, Array<*>>} declutterReplays Declutter replays.\n * @param {CanvasRenderingContext2D} context Context.\n * @param {number} rotation Rotation.\n * @param {number} opacity Opacity.\n * @param {boolean} snapToPixel Snap point symbols and text to integer pixels.\n * @param {Array<import(\"../../PluggableMap.js\").DeclutterItems>} declutterItems Declutter items.\n */\nexport function replayDeclutter(declutterReplays, context, rotation, opacity, snapToPixel, declutterItems) {\n    var zs = Object.keys(declutterReplays).map(Number).sort(numberSafeCompareFunction);\n    for (var z = 0, zz = zs.length; z < zz; ++z) {\n        var executorData = declutterReplays[zs[z].toString()];\n        var currentExecutor = void 0;\n        for (var i = 0, ii = executorData.length; i < ii;) {\n            var executor = executorData[i++];\n            if (executor !== currentExecutor) {\n                currentExecutor = executor;\n                declutterItems.push({\n                    items: executor.declutterItems,\n                    opacity: opacity\n                });\n            }\n            var transform = executorData[i++];\n            executor.execute(context, transform, rotation, snapToPixel);\n        }\n    }\n}\nexport default ExecutorGroup;\n//# sourceMappingURL=ExecutorGroup.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/renderer/canvas/VectorLayer\n */\nimport { getUid } from '../../util.js';\nimport ViewHint from '../../ViewHint.js';\nimport { buffer, createEmpty, containsExtent, getWidth, intersects as intersectsExtent, wrapX as wrapExtentX } from '../../extent.js';\nimport { wrapX as wrapCoordinateX } from '../../coordinate.js';\nimport { fromUserExtent, toUserExtent, getUserProjection, getTransformFromProjections } from '../../proj.js';\nimport CanvasBuilderGroup from '../../render/canvas/BuilderGroup.js';\nimport ExecutorGroup, { replayDeclutter } from '../../render/canvas/ExecutorGroup.js';\nimport CanvasLayerRenderer from './Layer.js';\nimport { defaultOrder as defaultRenderOrder, getTolerance as getRenderTolerance, getSquaredTolerance as getSquaredRenderTolerance, renderFeature } from '../vector.js';\nimport { toString as transformToString, makeScale, makeInverse, apply } from '../../transform.js';\nimport { createHitDetectionImageData, hitDetect } from '../../render/canvas/hitdetect.js';\n/**\n * @classdesc\n * Canvas renderer for vector layers.\n * @api\n */\nvar CanvasVectorLayerRenderer = /** @class */ (function (_super) {\n    __extends(CanvasVectorLayerRenderer, _super);\n    /**\n     * @param {import(\"../../layer/Vector.js\").default} vectorLayer Vector layer.\n     */\n    function CanvasVectorLayerRenderer(vectorLayer) {\n        var _this = _super.call(this, vectorLayer) || this;\n        /** @private */\n        _this.boundHandleStyleImageChange_ = _this.handleStyleImageChange_.bind(_this);\n        /**\n         * @type {boolean}\n         */\n        _this.animatingOrInteracting_;\n        /**\n         * @private\n         * @type {boolean}\n         */\n        _this.dirty_ = false;\n        /**\n         * @type {ImageData}\n         */\n        _this.hitDetectionImageData_ = null;\n        /**\n         * @type {Array<import(\"../../Feature.js\").default>}\n         */\n        _this.renderedFeatures_ = null;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.renderedRevision_ = -1;\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.renderedResolution_ = NaN;\n        /**\n         * @private\n         * @type {import(\"../../extent.js\").Extent}\n         */\n        _this.renderedExtent_ = createEmpty();\n        /**\n         * @private\n         * @type {number}\n         */\n        _this.renderedRotation_;\n        /**\n         * @private\n         * @type {import(\"../../coordinate\").Coordinate}\n         */\n        _this.renderedCenter_ = null;\n        /**\n         * @private\n         * @type {import(\"../../proj/Projection\").default}\n         */\n        _this.renderedProjection_ = null;\n        /**\n         * @private\n         * @type {function(import(\"../../Feature.js\").default, import(\"../../Feature.js\").default): number|null}\n         */\n        _this.renderedRenderOrder_ = null;\n        /**\n         * @private\n         * @type {import(\"../../render/canvas/ExecutorGroup\").default}\n         */\n        _this.replayGroup_ = null;\n        /**\n         * A new replay group had to be created by `prepareFrame()`\n         * @type {boolean}\n         */\n        _this.replayGroupChanged = true;\n        return _this;\n    }\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.useContainer = function (target, transform, opacity) {\n        if (opacity < 1) {\n            target = null;\n        }\n        _super.prototype.useContainer.call(this, target, transform, opacity);\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.renderFrame = function (frameState, target) {\n        var pixelRatio = frameState.pixelRatio;\n        var layerState = frameState.layerStatesArray[frameState.layerIndex];\n        // set forward and inverse pixel transforms\n        makeScale(this.pixelTransform, 1 / pixelRatio, 1 / pixelRatio);\n        makeInverse(this.inversePixelTransform, this.pixelTransform);\n        var canvasTransform = transformToString(this.pixelTransform);\n        this.useContainer(target, canvasTransform, layerState.opacity);\n        var context = this.context;\n        var canvas = context.canvas;\n        var replayGroup = this.replayGroup_;\n        if (!replayGroup || replayGroup.isEmpty()) {\n            if (!this.containerReused && canvas.width > 0) {\n                canvas.width = 0;\n            }\n            return this.container;\n        }\n        // resize and clear\n        var width = Math.round(frameState.size[0] * pixelRatio);\n        var height = Math.round(frameState.size[1] * pixelRatio);\n        if (canvas.width != width || canvas.height != height) {\n            canvas.width = width;\n            canvas.height = height;\n            if (canvas.style.transform !== canvasTransform) {\n                canvas.style.transform = canvasTransform;\n            }\n        }\n        else if (!this.containerReused) {\n            context.clearRect(0, 0, width, height);\n        }\n        this.preRender(context, frameState);\n        var extent = frameState.extent;\n        var viewState = frameState.viewState;\n        var center = viewState.center;\n        var resolution = viewState.resolution;\n        var projection = viewState.projection;\n        var rotation = viewState.rotation;\n        var projectionExtent = projection.getExtent();\n        var vectorSource = this.getLayer().getSource();\n        // clipped rendering if layer extent is set\n        var clipped = false;\n        if (layerState.extent) {\n            var layerExtent = fromUserExtent(layerState.extent, projection);\n            clipped = !containsExtent(layerExtent, frameState.extent) && intersectsExtent(layerExtent, frameState.extent);\n            if (clipped) {\n                this.clip(context, frameState, layerExtent);\n            }\n        }\n        var viewHints = frameState.viewHints;\n        var snapToPixel = !(viewHints[ViewHint.ANIMATING] || viewHints[ViewHint.INTERACTING]);\n        var transform = this.getRenderTransform(center, resolution, rotation, pixelRatio, width, height, 0);\n        var declutterReplays = this.getLayer().getDeclutter() ? {} : null;\n        replayGroup.execute(context, transform, rotation, snapToPixel, undefined, declutterReplays);\n        if (vectorSource.getWrapX() && projection.canWrapX() && !containsExtent(projectionExtent, extent)) {\n            var startX = extent[0];\n            var worldWidth = getWidth(projectionExtent);\n            var world = 0;\n            var offsetX = void 0;\n            while (startX < projectionExtent[0]) {\n                --world;\n                offsetX = worldWidth * world;\n                var transform_1 = this.getRenderTransform(center, resolution, rotation, pixelRatio, width, height, offsetX);\n                replayGroup.execute(context, transform_1, rotation, snapToPixel, undefined, declutterReplays);\n                startX += worldWidth;\n            }\n            world = 0;\n            startX = extent[2];\n            while (startX > projectionExtent[2]) {\n                ++world;\n                offsetX = worldWidth * world;\n                var transform_2 = this.getRenderTransform(center, resolution, rotation, pixelRatio, width, height, offsetX);\n                replayGroup.execute(context, transform_2, rotation, snapToPixel, undefined, declutterReplays);\n                startX -= worldWidth;\n            }\n        }\n        if (declutterReplays) {\n            var viewHints_1 = frameState.viewHints;\n            var hifi = !(viewHints_1[ViewHint.ANIMATING] || viewHints_1[ViewHint.INTERACTING]);\n            replayDeclutter(declutterReplays, context, rotation, 1, hifi, frameState.declutterItems);\n        }\n        if (clipped) {\n            context.restore();\n        }\n        this.postRender(context, frameState);\n        var opacity = layerState.opacity;\n        var container = this.container;\n        if (opacity !== parseFloat(container.style.opacity)) {\n            container.style.opacity = opacity === 1 ? '' : opacity;\n        }\n        return this.container;\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.getFeatures = function (pixel) {\n        return new Promise(function (resolve, reject) {\n            if (!this.hitDetectionImageData_ && !this.animatingOrInteracting_) {\n                var size = [this.context.canvas.width, this.context.canvas.height];\n                apply(this.pixelTransform, size);\n                var center = this.renderedCenter_;\n                var resolution = this.renderedResolution_;\n                var rotation = this.renderedRotation_;\n                var projection = this.renderedProjection_;\n                var extent = this.renderedExtent_;\n                var layer = this.getLayer();\n                var transforms = [];\n                var width = size[0] / 2;\n                var height = size[1] / 2;\n                transforms.push(this.getRenderTransform(center, resolution, rotation, 0.5, width, height, 0).slice());\n                var source = layer.getSource();\n                var projectionExtent = projection.getExtent();\n                if (source.getWrapX() && projection.canWrapX() && !containsExtent(projectionExtent, extent)) {\n                    var startX = extent[0];\n                    var worldWidth = getWidth(projectionExtent);\n                    var world = 0;\n                    var offsetX = void 0;\n                    while (startX < projectionExtent[0]) {\n                        --world;\n                        offsetX = worldWidth * world;\n                        transforms.push(this.getRenderTransform(center, resolution, rotation, 0.5, width, height, offsetX).slice());\n                        startX += worldWidth;\n                    }\n                    world = 0;\n                    startX = extent[2];\n                    while (startX > projectionExtent[2]) {\n                        ++world;\n                        offsetX = worldWidth * world;\n                        transforms.push(this.getRenderTransform(center, resolution, rotation, 0.5, width, height, offsetX).slice());\n                        startX -= worldWidth;\n                    }\n                }\n                this.hitDetectionImageData_ = createHitDetectionImageData(size, transforms, this.renderedFeatures_, layer.getStyleFunction(), extent, resolution, rotation);\n            }\n            resolve(hitDetect(pixel, this.renderedFeatures_, this.hitDetectionImageData_));\n        }.bind(this));\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.forEachFeatureAtCoordinate = function (coordinate, frameState, hitTolerance, callback, declutteredFeatures) {\n        if (!this.replayGroup_) {\n            return undefined;\n        }\n        else {\n            var resolution = frameState.viewState.resolution;\n            var rotation = frameState.viewState.rotation;\n            var layer_1 = this.getLayer();\n            /** @type {!Object<string, boolean>} */\n            var features_1 = {};\n            var result = this.replayGroup_.forEachFeatureAtCoordinate(coordinate, resolution, rotation, hitTolerance, \n            /**\n             * @param {import(\"../../Feature.js\").FeatureLike} feature Feature.\n             * @return {?} Callback result.\n             */\n            function (feature) {\n                var key = getUid(feature);\n                if (!(key in features_1)) {\n                    features_1[key] = true;\n                    return callback(feature, layer_1);\n                }\n            }, layer_1.getDeclutter() ? declutteredFeatures : null);\n            return result;\n        }\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.handleFontsChanged = function () {\n        var layer = this.getLayer();\n        if (layer.getVisible() && this.replayGroup_) {\n            layer.changed();\n        }\n    };\n    /**\n     * Handle changes in image style state.\n     * @param {import(\"../../events/Event.js\").default} event Image style change event.\n     * @private\n     */\n    CanvasVectorLayerRenderer.prototype.handleStyleImageChange_ = function (event) {\n        this.renderIfReadyAndVisible();\n    };\n    /**\n     * @inheritDoc\n     */\n    CanvasVectorLayerRenderer.prototype.prepareFrame = function (frameState) {\n        var vectorLayer = this.getLayer();\n        var vectorSource = vectorLayer.getSource();\n        if (!vectorSource) {\n            return false;\n        }\n        var animating = frameState.viewHints[ViewHint.ANIMATING];\n        var interacting = frameState.viewHints[ViewHint.INTERACTING];\n        var updateWhileAnimating = vectorLayer.getUpdateWhileAnimating();\n        var updateWhileInteracting = vectorLayer.getUpdateWhileInteracting();\n        if (!this.dirty_ && (!updateWhileAnimating && animating) ||\n            (!updateWhileInteracting && interacting)) {\n            this.animatingOrInteracting_ = true;\n            return true;\n        }\n        this.animatingOrInteracting_ = false;\n        var frameStateExtent = frameState.extent;\n        var viewState = frameState.viewState;\n        var projection = viewState.projection;\n        var resolution = viewState.resolution;\n        var pixelRatio = frameState.pixelRatio;\n        var vectorLayerRevision = vectorLayer.getRevision();\n        var vectorLayerRenderBuffer = vectorLayer.getRenderBuffer();\n        var vectorLayerRenderOrder = vectorLayer.getRenderOrder();\n        if (vectorLayerRenderOrder === undefined) {\n            vectorLayerRenderOrder = defaultRenderOrder;\n        }\n        var center = viewState.center.slice();\n        var extent = buffer(frameStateExtent, vectorLayerRenderBuffer * resolution);\n        var loadExtents = [extent.slice()];\n        var projectionExtent = projection.getExtent();\n        if (vectorSource.getWrapX() && projection.canWrapX() &&\n            !containsExtent(projectionExtent, frameState.extent)) {\n            // For the replay group, we need an extent that intersects the real world\n            // (-180° to +180°). To support geometries in a coordinate range from -540°\n            // to +540°, we add at least 1 world width on each side of the projection\n            // extent. If the viewport is wider than the world, we need to add half of\n            // the viewport width to make sure we cover the whole viewport.\n            var worldWidth = getWidth(projectionExtent);\n            var gutter = Math.max(getWidth(extent) / 2, worldWidth);\n            extent[0] = projectionExtent[0] - gutter;\n            extent[2] = projectionExtent[2] + gutter;\n            wrapCoordinateX(center, projection);\n            var loadExtent = wrapExtentX(loadExtents[0], projection);\n            // If the extent crosses the date line, we load data for both edges of the worlds\n            if (loadExtent[0] < projectionExtent[0] && loadExtent[2] < projectionExtent[2]) {\n                loadExtents.push([loadExtent[0] + worldWidth, loadExtent[1], loadExtent[2] + worldWidth, loadExtent[3]]);\n            }\n            else if (loadExtent[0] > projectionExtent[0] && loadExtent[2] > projectionExtent[2]) {\n                loadExtents.push([loadExtent[0] - worldWidth, loadExtent[1], loadExtent[2] - worldWidth, loadExtent[3]]);\n            }\n        }\n        if (!this.dirty_ &&\n            this.renderedResolution_ == resolution &&\n            this.renderedRevision_ == vectorLayerRevision &&\n            this.renderedRenderOrder_ == vectorLayerRenderOrder &&\n            containsExtent(this.renderedExtent_, extent)) {\n            this.replayGroupChanged = false;\n            return true;\n        }\n        this.replayGroup_ = null;\n        this.dirty_ = false;\n        var replayGroup = new CanvasBuilderGroup(getRenderTolerance(resolution, pixelRatio), extent, resolution, pixelRatio, vectorLayer.getDeclutter());\n        var userProjection = getUserProjection();\n        var userTransform;\n        if (userProjection) {\n            for (var i = 0, ii = loadExtents.length; i < ii; ++i) {\n                vectorSource.loadFeatures(toUserExtent(loadExtents[i], projection), resolution, userProjection);\n            }\n            userTransform = getTransformFromProjections(userProjection, projection);\n        }\n        else {\n            for (var i = 0, ii = loadExtents.length; i < ii; ++i) {\n                vectorSource.loadFeatures(loadExtents[i], resolution, projection);\n            }\n        }\n        var squaredTolerance = getSquaredRenderTolerance(resolution, pixelRatio);\n        /**\n         * @param {import(\"../../Feature.js\").default} feature Feature.\n         * @this {CanvasVectorLayerRenderer}\n         */\n        var render = function (feature) {\n            var styles;\n            var styleFunction = feature.getStyleFunction() || vectorLayer.getStyleFunction();\n            if (styleFunction) {\n                styles = styleFunction(feature, resolution);\n            }\n            if (styles) {\n                var dirty = this.renderFeature(feature, squaredTolerance, styles, replayGroup, userTransform);\n                this.dirty_ = this.dirty_ || dirty;\n            }\n        }.bind(this);\n        var userExtent = toUserExtent(extent, projection);\n        /** @type {Array<import(\"../../Feature.js\").default>} */\n        var features = vectorSource.getFeaturesInExtent(userExtent);\n        if (vectorLayerRenderOrder) {\n            features.sort(vectorLayerRenderOrder);\n        }\n        for (var i = 0, ii = features.length; i < ii; ++i) {\n            render(features[i]);\n        }\n        this.renderedFeatures_ = features;\n        var replayGroupInstructions = replayGroup.finish();\n        var executorGroup = new ExecutorGroup(extent, resolution, pixelRatio, vectorSource.getOverlaps(), replayGroupInstructions, vectorLayer.getRenderBuffer());\n        this.renderedResolution_ = resolution;\n        this.renderedRevision_ = vectorLayerRevision;\n        this.renderedRenderOrder_ = vectorLayerRenderOrder;\n        this.renderedExtent_ = extent;\n        this.renderedRotation_ = viewState.rotation;\n        this.renderedCenter_ = center;\n        this.renderedProjection_ = projection;\n        this.replayGroup_ = executorGroup;\n        this.hitDetectionImageData_ = null;\n        this.replayGroupChanged = true;\n        return true;\n    };\n    /**\n     * @param {import(\"../../Feature.js\").default} feature Feature.\n     * @param {number} squaredTolerance Squared render tolerance.\n     * @param {import(\"../../style/Style.js\").default|Array<import(\"../../style/Style.js\").default>} styles The style or array of styles.\n     * @param {import(\"../../render/canvas/BuilderGroup.js\").default} builderGroup Builder group.\n     * @param {import(\"../../proj.js\").TransformFunction=} opt_transform Transform from user to view projection.\n     * @return {boolean} `true` if an image is loading.\n     */\n    CanvasVectorLayerRenderer.prototype.renderFeature = function (feature, squaredTolerance, styles, builderGroup, opt_transform) {\n        if (!styles) {\n            return false;\n        }\n        var loading = false;\n        if (Array.isArray(styles)) {\n            for (var i = 0, ii = styles.length; i < ii; ++i) {\n                loading = renderFeature(builderGroup, feature, styles[i], squaredTolerance, this.boundHandleStyleImageChange_, opt_transform) || loading;\n            }\n        }\n        else {\n            loading = renderFeature(builderGroup, feature, styles, squaredTolerance, this.boundHandleStyleImageChange_, opt_transform);\n        }\n        return loading;\n    };\n    return CanvasVectorLayerRenderer;\n}(CanvasLayerRenderer));\nexport default CanvasVectorLayerRenderer;\n//# sourceMappingURL=VectorLayer.js.map","/**\n * @module ol/render/canvas/hitdetet\n */\nimport CanvasImmediateRenderer from './Immediate.js';\nimport { createCanvasContext2D } from '../../dom.js';\nimport { Icon } from '../../style.js';\nimport IconAnchorUnits from '../../style/IconAnchorUnits.js';\nimport GeometryType from '../../geom/GeometryType.js';\nimport { intersects } from '../../extent.js';\nimport { numberSafeCompareFunction } from '../../array.js';\n/**\n * @param {import(\"../../size.js\").Size} size Canvas size in css pixels.\n * @param {Array<import(\"../../transform.js\").Transform>} transforms Transforms\n * for rendering features to all worlds of the viewport, from coordinates to css\n * pixels.\n * @param {Array<import(\"../../Feature.js\").FeatureLike>} features\n * Features to consider for hit detection.\n * @param {import(\"../../style/Style.js\").StyleFunction|undefined} styleFunction\n * Layer style function.\n * @param {import(\"../../extent.js\").Extent} extent Extent.\n * @param {number} resolution Resolution.\n * @param {number} rotation Rotation.\n * @return {ImageData} Hit detection image data.\n */\nexport function createHitDetectionImageData(size, transforms, features, styleFunction, extent, resolution, rotation) {\n    var width = size[0] / 2;\n    var height = size[1] / 2;\n    var context = createCanvasContext2D(width, height);\n    context.imageSmoothingEnabled = false;\n    var canvas = context.canvas;\n    var renderer = new CanvasImmediateRenderer(context, 0.5, extent, null, rotation);\n    var featureCount = features.length;\n    // Stretch hit detection index to use the whole available color range\n    var indexFactor = Math.floor((256 * 256 * 256 - 1) / featureCount);\n    var featuresByZIndex = {};\n    for (var i = 1; i <= featureCount; ++i) {\n        var feature = features[i - 1];\n        var featureStyleFunction = feature.getStyleFunction() || styleFunction;\n        if (!styleFunction) {\n            continue;\n        }\n        var styles = featureStyleFunction(feature, resolution);\n        if (!styles) {\n            continue;\n        }\n        if (!Array.isArray(styles)) {\n            styles = [styles];\n        }\n        var index = i * indexFactor;\n        var color = '#' + ('000000' + index.toString(16)).slice(-6);\n        for (var j = 0, jj = styles.length; j < jj; ++j) {\n            var originalStyle = styles[j];\n            var style = originalStyle.clone();\n            var fill = style.getFill();\n            if (fill) {\n                fill.setColor(color);\n            }\n            var stroke = style.getStroke();\n            if (stroke) {\n                stroke.setColor(color);\n            }\n            style.setText(undefined);\n            var image = originalStyle.getImage();\n            if (image) {\n                var imgSize = image.getImageSize();\n                if (!imgSize) {\n                    continue;\n                }\n                var canvas_1 = document.createElement('canvas');\n                canvas_1.width = imgSize[0];\n                canvas_1.height = imgSize[1];\n                var imgContext = canvas_1.getContext('2d', { alpha: false });\n                imgContext.fillStyle = color;\n                var img = imgContext.canvas;\n                imgContext.fillRect(0, 0, img.width, img.height);\n                var width_1 = imgSize ? imgSize[0] : img.width;\n                var height_1 = imgSize ? imgSize[1] : img.height;\n                var iconContext = createCanvasContext2D(width_1, height_1);\n                iconContext.drawImage(img, 0, 0);\n                style.setImage(new Icon({\n                    img: img,\n                    imgSize: imgSize,\n                    anchor: image.getAnchor(),\n                    anchorXUnits: IconAnchorUnits.PIXELS,\n                    anchorYUnits: IconAnchorUnits.PIXELS,\n                    offset: image.getOrigin(),\n                    size: image.getSize(),\n                    opacity: image.getOpacity(),\n                    scale: image.getScale(),\n                    rotation: image.getRotation(),\n                    rotateWithView: image.getRotateWithView()\n                }));\n            }\n            var zIndex = Number(style.getZIndex());\n            var byGeometryType = featuresByZIndex[zIndex];\n            if (!byGeometryType) {\n                byGeometryType = {};\n                featuresByZIndex[zIndex] = byGeometryType;\n                byGeometryType[GeometryType.POLYGON] = [];\n                byGeometryType[GeometryType.CIRCLE] = [];\n                byGeometryType[GeometryType.LINE_STRING] = [];\n                byGeometryType[GeometryType.POINT] = [];\n            }\n            var geometry = style.getGeometryFunction()(feature);\n            if (geometry && intersects(extent, geometry.getExtent())) {\n                byGeometryType[geometry.getType().replace('Multi', '')].push(geometry, style);\n            }\n        }\n    }\n    var zIndexKeys = Object.keys(featuresByZIndex).map(Number).sort(numberSafeCompareFunction);\n    for (var i = 0, ii = zIndexKeys.length; i < ii; ++i) {\n        var byGeometryType = featuresByZIndex[zIndexKeys[i]];\n        for (var type in byGeometryType) {\n            var geomAndStyle = byGeometryType[type];\n            for (var j = 0, jj = geomAndStyle.length; j < jj; j += 2) {\n                renderer.setStyle(geomAndStyle[j + 1]);\n                for (var k = 0, kk = transforms.length; k < kk; ++k) {\n                    renderer.setTransform(transforms[k]);\n                    renderer.drawGeometry(geomAndStyle[j]);\n                }\n            }\n        }\n    }\n    document.body.appendChild(context.canvas);\n    return context.getImageData(0, 0, canvas.width, canvas.height);\n}\n/**\n * @param {import(\"../../pixel\").Pixel} pixel Pixel coordinate on the hit\n * detection canvas in css pixels.\n * @param {Array<import(\"../../Feature\").FeatureLike>} features Features. Has to\n * match the `features` array that was passed to `createHitDetectionImageData()`.\n * @param {ImageData} imageData Hit detection image data generated by\n * `createHitDetectionImageData()`.\n * @return {Array<import(\"../../Feature\").FeatureLike>} features Features.\n */\nexport function hitDetect(pixel, features, imageData) {\n    var resultFeatures = [];\n    if (imageData) {\n        var index = (Math.round(pixel[0] / 2) + Math.round(pixel[1] / 2) * imageData.width) * 4;\n        var r = imageData.data[index];\n        var g = imageData.data[index + 1];\n        var b = imageData.data[index + 2];\n        var i = b + (256 * (g + (256 * r)));\n        var indexFactor = Math.floor((256 * 256 * 256 - 1) / features.length);\n        if (i && i % indexFactor === 0) {\n            resultFeatures.push(features[i / indexFactor - 1]);\n        }\n    }\n    return resultFeatures;\n}\n//# sourceMappingURL=hitdetect.js.map","var __extends = (this && this.__extends) || (function () {\n    var extendStatics = function (d, b) {\n        extendStatics = Object.setPrototypeOf ||\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/layer/Vector\n */\nimport BaseVectorLayer from './BaseVector.js';\nimport CanvasVectorLayerRenderer from '../renderer/canvas/VectorLayer.js';\n/**\n * @classdesc\n * Vector data that is rendered client-side.\n * Note that any property set in the options is set as a {@link module:ol/Object~BaseObject}\n * property on the layer object; for example, setting `title: 'My Title'` in the\n * options means that `title` is observable, and has get/set accessors.\n *\n * @extends {BaseVectorLayer<import(\"../source/Vector.js\").default>}\n * @api\n */\nvar VectorLayer = /** @class */ (function (_super) {\n    __extends(VectorLayer, _super);\n    /**\n     * @param {import(\"./BaseVector.js\").Options=} opt_options Options.\n     */\n    function VectorLayer(opt_options) {\n        return _super.call(this, opt_options) || this;\n    }\n    /**\n     * Create a renderer for this layer.\n     * @return {import(\"../renderer/Layer.js\").default} A layer renderer.\n     * @protected\n     */\n    VectorLayer.prototype.createRenderer = function () {\n        return new CanvasVectorLayerRenderer(this);\n    };\n    return VectorLayer;\n}(BaseVectorLayer));\nexport default VectorLayer;\n//# sourceMappingURL=Vector.js.map","/*\n * μlogger\n *\n * Copyright(C) 2019 Bartek Fabiszewski (www.fabiszewski.net)\n *\n * This is free software; you can redistribute it and/or modify it under\n * the terms of the GNU General Public License as published by\n * the Free Software Foundation; either version 3 of the License, or\n * (at your option) any later version.\n *\n * This program is distributed in the hope that it will be useful, but\n * WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n * General Public License for more details.\n *\n * You should have received a copy of the GNU General Public License\n * along with this program; if not, see <http://www.gnu.org/licenses/>.\n */\n\nimport { Control, Rotate, ScaleLine, Zoom, ZoomToExtent } from 'ol/control';\nimport { LineString, Point } from 'ol/geom';\nimport { fromLonLat, toLonLat } from 'ol/proj';\nimport Feature from 'ol/Feature';\nimport Icon from 'ol/style/Icon';\nimport Map from 'ol/Map';\nimport OSM from 'ol/source/OSM';\nimport Overlay from 'ol/Overlay';\nimport Stroke from 'ol/style/Stroke';\nimport Style from 'ol/style/Style';\nimport TileLayer from 'ol/layer/Tile';\nimport Vector from 'ol/source/Vector';\nimport VectorLayer from 'ol/layer/Vector';\nimport View from 'ol/View';\nimport XYZ from 'ol/source/XYZ';\n\nexport { Feature, Map, Overlay, View };\nexport const control = { Control, Rotate, ScaleLine, Zoom, ZoomToExtent };\nexport const geom = { LineString, Point };\nexport const layer = { TileLayer, VectorLayer };\nexport const proj = { fromLonLat, toLonLat };\nexport const source = { OSM, Vector, XYZ };\nexport const style = { Icon, Stroke, Style };\n"],"sourceRoot":""}