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qx(a.g,f)}k.Do=function(){return this.g}; -k.Eo=function(a){this.N=null;this.v=a;this.u()};k.Fo=function(a){a!=this.g&&(this.g=a,this.N=null,this.u())};k.Go=function(a){tb(this.a,a);vx(this);this.N=null;this.u()};function vx(a){a.o=0<=xe(a.a.VERSION||"1.3.0")};function yx(a){a=a||{};var b;void 0!==a.attributions?b=a.attributions:b=[zx];kx.call(this,{attributions:b,cacheSize:a.cacheSize,crossOrigin:void 0!==a.crossOrigin?a.crossOrigin:"anonymous",opaque:void 0!==a.opaque?a.opaque:!0,maxZoom:void 0!==a.maxZoom?a.maxZoom:19,reprojectionErrorThreshold:a.reprojectionErrorThreshold,tileLoadFunction:a.tileLoadFunction,url:void 0!==a.url?a.url:"https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png",wrapX:a.wrapX})}v(yx,kx);var zx=new Fc({html:'© OpenStreetMap contributors.'});Op.nf={};Op.nf.Hf=function(){}; -(function(a){function b(a,b,c){if(g)return new ImageData(a,b,c);b=h.createImageData(b,c);b.data.set(a);return b}function c(a){var b=!0;try{new ImageData(10,10)}catch(n){b=!1}return 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-ds.prototype.getTrackingOptions=ds.prototype.Xh;ds.prototype.setProjection=ds.prototype.li;ds.prototype.setTracking=ds.prototype.Ve;ds.prototype.setTrackingOptions=ds.prototype.Jj;t("ol.Graticule",ks);ks.prototype.getMap=ks.prototype.Nm;ks.prototype.getMeridians=ks.prototype.kl;ks.prototype.getParallels=ks.prototype.pl;ks.prototype.setMap=ks.prototype.setMap;t("ol.has.DEVICE_PIXEL_RATIO",pd);t("ol.has.CANVAS",rd);t("ol.has.DEVICE_ORIENTATION",sd);t("ol.has.GEOLOCATION",td);t("ol.has.TOUCH",ud); -t("ol.has.WEBGL",id);qs.prototype.getImage=qs.prototype.Y;qs.prototype.load=qs.prototype.load;us.prototype.getImage=us.prototype.Y;t("ol.inherits",v);t("ol.interaction.defaults",Hh);t("ol.Kinetic",yg);t("ol.loadingstrategy.all",Js);t("ol.loadingstrategy.bbox",function(a){return[a]});t("ol.loadingstrategy.tile",function(a){return function(b,c){c=a.xc(c);b=tc(a,b,c);var d=[];c=[c,0,0];for(c[1]=b.ba;c[1]<=b.da;++c[1])for(c[2]=b.ea;c[2]<=b.ga;++c[2])d.push(a.Ja(c));return d}});t("ol.Map",X); -fd.prototype.originalEvent=fd.prototype.originalEvent;fd.prototype.pixel=fd.prototype.pixel;fd.prototype.coordinate=fd.prototype.coordinate;fd.prototype.dragging=fd.prototype.dragging;ed.prototype.map=ed.prototype.map;ed.prototype.frameState=ed.prototype.frameState;t("ol.Object",Wc);Wc.prototype.get=Wc.prototype.get;Wc.prototype.getKeys=Wc.prototype.P;Wc.prototype.getProperties=Wc.prototype.M;Wc.prototype.set=Wc.prototype.set;Wc.prototype.setProperties=Wc.prototype.H;Wc.prototype.unset=Wc.prototype.R; -$c.prototype.key=$c.prototype.key;$c.prototype.oldValue=$c.prototype.oldValue;t("ol.Observable",Vc);t("ol.Observable.unByKey",function(a){if(Array.isArray(a))for(var b=0,c=a.length;b e&&(e=0);var f=c.TileMatrixSetLink[e].TileMatrixSet;var g=c.TileMatrixSetLink[e].TileMatrixSetLimits;var h=c.Format[0];"format"in b&&(h=b.format);e=pa(c.Style,function(a){return"style"in b?a.Title==b.style:a.isDefault});0>e&&(e=0);e=c.Style[e].Identifier;var l={};"Dimension"in c&&c.Dimension.forEach(function(a){var b=a.Identifier,c=a.Default;void 0===c&&(c=a.Value[0]);l[b]=c});var m=ka(a.Contents.TileMatrixSet,function(a){return a.Identifier==f});var n="projection"in b?Zb(b.projection): -Zb(m.SupportedCRS.replace(/urn:ogc:def:crs:(\w+):(.*:)?(\w+)$/,"$1:$3"));var p=c.WGS84BoundingBox;if(void 0!==p){var q=Zb("EPSG:4326").G();q=p[0]==q[0]&&p[2]==q[2];var r=lc(p,"EPSG:4326",n);(p=n.G())&&(Wa(p,r)||(r=void 0))}g=dy(m,r,g);var u=[];m=b.requestEncoding;m=void 0!==m?m:"";if("OperationsMetadata"in a&&"GetTile"in a.OperationsMetadata)for(a=a.OperationsMetadata.GetTile.DCP.HTTP.Get,r=0,p=a.length;r 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","'use strict';\n\nmodule.exports = Pbf;\n\nvar ieee754 = require('ieee754');\n\nfunction Pbf(buf) {\n this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);\n this.pos = 0;\n this.type = 0;\n this.length = this.buf.length;\n}\n\nPbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum\nPbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64\nPbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields\nPbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32\n\nvar SHIFT_LEFT_32 = (1 << 16) * (1 << 16),\n SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32;\n\n// Threshold chosen based on both benchmarking and knowledge about browser string\n// data structures (which currently switch structure types at 12 bytes or more)\nvar TEXT_DECODER_MIN_LENGTH = 12;\nvar utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf8');\n\nPbf.prototype = {\n\n destroy: function() {\n this.buf = null;\n },\n\n // === READING =================================================================\n\n readFields: function(readField, result, end) {\n end = end || this.length;\n\n while (this.pos < end) {\n var val = this.readVarint(),\n tag = val >> 3,\n startPos = this.pos;\n\n this.type = val & 0x7;\n readField(tag, result, this);\n\n if (this.pos === startPos) this.skip(val);\n }\n return result;\n },\n\n readMessage: function(readField, result) {\n return this.readFields(readField, result, this.readVarint() + this.pos);\n },\n\n readFixed32: function() {\n var val = readUInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n readSFixed32: function() {\n var val = readInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)\n\n readFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readSFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readFloat: function() {\n var val = ieee754.read(this.buf, this.pos, true, 23, 4);\n this.pos += 4;\n return val;\n },\n\n readDouble: function() {\n var val = ieee754.read(this.buf, this.pos, true, 52, 8);\n this.pos += 8;\n return val;\n },\n\n readVarint: function(isSigned) {\n var buf = this.buf,\n val, b;\n\n b = buf[this.pos++]; val = b & 0x7f; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 7; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;\n b = buf[this.pos]; val |= (b & 0x0f) << 28;\n\n return readVarintRemainder(val, isSigned, this);\n },\n\n readVarint64: function() { // for compatibility with v2.0.1\n return this.readVarint(true);\n },\n\n readSVarint: function() {\n var num = this.readVarint();\n return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding\n },\n\n readBoolean: function() {\n return Boolean(this.readVarint());\n },\n\n readString: function() {\n var end = this.readVarint() + this.pos;\n var pos = this.pos;\n this.pos = end;\n\n if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {\n // longer strings are fast with the built-in browser TextDecoder API\n return readUtf8TextDecoder(this.buf, pos, end);\n }\n // short strings are fast with our custom implementation\n return readUtf8(this.buf, pos, end);\n },\n\n readBytes: function() {\n var end = this.readVarint() + this.pos,\n buffer = this.buf.subarray(this.pos, end);\n this.pos = end;\n return buffer;\n },\n\n // verbose for performance reasons; doesn't affect gzipped size\n\n readPackedVarint: function(arr, isSigned) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readVarint(isSigned));\n return arr;\n },\n readPackedSVarint: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSVarint());\n return arr;\n },\n readPackedBoolean: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readBoolean());\n return arr;\n },\n readPackedFloat: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFloat());\n return arr;\n },\n readPackedDouble: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readDouble());\n return arr;\n },\n readPackedFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed32());\n return arr;\n },\n readPackedSFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed32());\n return arr;\n },\n readPackedFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed64());\n return arr;\n },\n readPackedSFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed64());\n return arr;\n },\n\n skip: function(val) {\n var type = val & 0x7;\n if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}\n else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;\n else if (type === Pbf.Fixed32) this.pos += 4;\n else if (type === Pbf.Fixed64) this.pos += 8;\n else throw new Error('Unimplemented type: ' + type);\n },\n\n // === WRITING =================================================================\n\n writeTag: function(tag, type) {\n this.writeVarint((tag << 3) | type);\n },\n\n realloc: function(min) {\n var length = this.length || 16;\n\n while (length < this.pos + min) length *= 2;\n\n if (length !== this.length) {\n var buf = new Uint8Array(length);\n buf.set(this.buf);\n this.buf = buf;\n this.length = length;\n }\n },\n\n finish: function() {\n this.length = this.pos;\n this.pos = 0;\n return this.buf.subarray(0, this.length);\n },\n\n writeFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeSFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeSFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeVarint: function(val) {\n val = +val || 0;\n\n if (val > 0xfffffff || val < 0) {\n writeBigVarint(val, this);\n return;\n }\n\n this.realloc(4);\n\n this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = (val >>> 7) & 0x7f;\n },\n\n writeSVarint: function(val) {\n this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);\n },\n\n writeBoolean: function(val) {\n this.writeVarint(Boolean(val));\n },\n\n writeString: function(str) {\n str = String(str);\n this.realloc(str.length * 4);\n\n this.pos++; // reserve 1 byte for short string length\n\n var startPos = this.pos;\n // write the string directly to the buffer and see how much was written\n this.pos = writeUtf8(this.buf, str, this.pos);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeFloat: function(val) {\n this.realloc(4);\n ieee754.write(this.buf, val, this.pos, true, 23, 4);\n this.pos += 4;\n },\n\n writeDouble: function(val) {\n this.realloc(8);\n ieee754.write(this.buf, val, this.pos, true, 52, 8);\n this.pos += 8;\n },\n\n writeBytes: function(buffer) {\n var len = buffer.length;\n this.writeVarint(len);\n this.realloc(len);\n for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];\n },\n\n writeRawMessage: function(fn, obj) {\n this.pos++; // reserve 1 byte for short message length\n\n // write the message directly to the buffer and see how much was written\n var startPos = this.pos;\n fn(obj, this);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeMessage: function(tag, fn, obj) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeRawMessage(fn, obj);\n },\n\n writePackedVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedVarint, arr); },\n writePackedSVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSVarint, arr); },\n writePackedBoolean: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedBoolean, arr); },\n writePackedFloat: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFloat, arr); },\n writePackedDouble: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedDouble, arr); },\n writePackedFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed32, arr); },\n writePackedSFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed32, arr); },\n writePackedFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed64, arr); },\n writePackedSFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed64, arr); },\n\n writeBytesField: function(tag, buffer) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeBytes(buffer);\n },\n writeFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFixed32(val);\n },\n writeSFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeSFixed32(val);\n },\n writeFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeFixed64(val);\n },\n writeSFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeSFixed64(val);\n },\n writeVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeVarint(val);\n },\n writeSVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeSVarint(val);\n },\n writeStringField: function(tag, str) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeString(str);\n },\n writeFloatField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFloat(val);\n },\n writeDoubleField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeDouble(val);\n },\n writeBooleanField: function(tag, val) {\n this.writeVarintField(tag, Boolean(val));\n }\n};\n\nfunction readVarintRemainder(l, s, p) {\n var buf = p.buf,\n h, b;\n\n b = buf[p.pos++]; h = (b & 0x70) >> 4; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 3; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 10; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 17; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 24; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x01) << 31; if (b < 0x80) return toNum(l, h, s);\n\n throw new Error('Expected varint not more than 10 bytes');\n}\n\nfunction readPackedEnd(pbf) {\n return pbf.type === Pbf.Bytes ?\n pbf.readVarint() + pbf.pos : pbf.pos + 1;\n}\n\nfunction toNum(low, high, isSigned) {\n if (isSigned) {\n return high * 0x100000000 + (low >>> 0);\n }\n\n return ((high >>> 0) * 0x100000000) + (low >>> 0);\n}\n\nfunction writeBigVarint(val, pbf) {\n var low, high;\n\n if (val >= 0) {\n low = (val % 0x100000000) | 0;\n high = (val / 0x100000000) | 0;\n } else {\n low = ~(-val % 0x100000000);\n high = ~(-val / 0x100000000);\n\n if (low ^ 0xffffffff) {\n low = (low + 1) | 0;\n } else {\n low = 0;\n high = (high + 1) | 0;\n }\n }\n\n if (val >= 0x10000000000000000 || val < -0x10000000000000000) {\n throw new Error('Given varint doesn\\'t fit into 10 bytes');\n }\n\n pbf.realloc(10);\n\n writeBigVarintLow(low, high, pbf);\n writeBigVarintHigh(high, pbf);\n}\n\nfunction writeBigVarintLow(low, high, pbf) {\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos] = low & 0x7f;\n}\n\nfunction writeBigVarintHigh(high, pbf) {\n var lsb = (high & 0x07) << 4;\n\n pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f;\n}\n\nfunction makeRoomForExtraLength(startPos, len, pbf) {\n var extraLen =\n len <= 0x3fff ? 1 :\n len <= 0x1fffff ? 2 :\n len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7));\n\n // if 1 byte isn't enough for encoding message length, shift the data to the right\n pbf.realloc(extraLen);\n for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];\n}\n\nfunction writePackedVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]); }\nfunction writePackedSVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]); }\nfunction writePackedFloat(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]); }\nfunction writePackedDouble(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]); }\nfunction writePackedBoolean(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]); }\nfunction writePackedFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]); }\nfunction writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }\nfunction writePackedFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]); }\nfunction writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }\n\n// Buffer code below from https://github.com/feross/buffer, MIT-licensed\n\nfunction readUInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] * 0x1000000);\n}\n\nfunction writeInt32(buf, val, pos) {\n buf[pos] = val;\n buf[pos + 1] = (val >>> 8);\n buf[pos + 2] = (val >>> 16);\n buf[pos + 3] = (val >>> 24);\n}\n\nfunction readInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] << 24);\n}\n\nfunction readUtf8(buf, pos, end) {\n var str = '';\n var i = pos;\n\n while (i < end) {\n var b0 = buf[i];\n var c = null; // codepoint\n var bytesPerSequence =\n b0 > 0xEF ? 4 :\n b0 > 0xDF ? 3 :\n b0 > 0xBF ? 2 : 1;\n\n if (i + bytesPerSequence > end) break;\n\n var b1, b2, b3;\n\n if (bytesPerSequence === 1) {\n if (b0 < 0x80) {\n c = b0;\n }\n } else if (bytesPerSequence === 2) {\n b1 = buf[i + 1];\n if ((b1 & 0xC0) === 0x80) {\n c = (b0 & 0x1F) << 0x6 | (b1 & 0x3F);\n if (c <= 0x7F) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 3) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | (b2 & 0x3F);\n if (c <= 0x7FF || (c >= 0xD800 && c <= 0xDFFF)) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 4) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n b3 = buf[i + 3];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | (b3 & 0x3F);\n if (c <= 0xFFFF || c >= 0x110000) {\n c = null;\n }\n }\n }\n\n if (c === null) {\n c = 0xFFFD;\n bytesPerSequence = 1;\n\n } else if (c > 0xFFFF) {\n c -= 0x10000;\n str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);\n c = 0xDC00 | c & 0x3FF;\n }\n\n str += String.fromCharCode(c);\n i += bytesPerSequence;\n }\n\n return str;\n}\n\nfunction readUtf8TextDecoder(buf, pos, end) {\n return utf8TextDecoder.decode(buf.subarray(pos, end));\n}\n\nfunction writeUtf8(buf, str, pos) {\n for (var i = 0, c, lead; i < str.length; i++) {\n c = str.charCodeAt(i); // code point\n\n if (c > 0xD7FF && c < 0xE000) {\n if (lead) {\n if (c < 0xDC00) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = c;\n continue;\n } else {\n c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;\n lead = null;\n }\n } else {\n if (c > 0xDBFF || (i + 1 === str.length)) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n } else {\n lead = c;\n }\n continue;\n }\n } else if (lead) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = null;\n }\n\n if (c < 0x80) {\n buf[pos++] = c;\n } else {\n if (c < 0x800) {\n buf[pos++] = c >> 0x6 | 0xC0;\n } else {\n if (c < 0x10000) {\n buf[pos++] = c >> 0xC | 0xE0;\n } else {\n buf[pos++] = c >> 0x12 | 0xF0;\n buf[pos++] = c >> 0xC & 0x3F | 0x80;\n }\n buf[pos++] = c >> 0x6 & 0x3F | 0x80;\n }\n buf[pos++] = c & 0x3F | 0x80;\n }\n }\n return pos;\n}\n","var Processor = require('./processor');\n\nexports.Processor = Processor;\n","exports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n","var newImageData = require('./util').newImageData;\n\n/**\n * Create a function for running operations. This function is serialized for\n * use in a worker.\n * @param {function(Array, Object):*} operation The operation.\n * @return {function(Object):ArrayBuffer} A function that takes an object with\n * buffers, meta, imageOps, width, and height properties and returns an array\n * buffer.\n */\nfunction createMinion(operation) {\n var workerHasImageData = true;\n try {\n new ImageData(10, 10);\n } catch (_) {\n workerHasImageData = false;\n }\n\n function newWorkerImageData(data, width, height) {\n if (workerHasImageData) {\n return new ImageData(data, width, height);\n } else {\n return {data: data, width: width, height: height};\n }\n }\n\n return function(data) {\n // bracket notation for minification support\n var buffers = data['buffers'];\n var meta = data['meta'];\n var imageOps = data['imageOps'];\n var width = data['width'];\n var height = data['height'];\n\n var numBuffers = buffers.length;\n var numBytes = buffers[0].byteLength;\n var output, b;\n\n if (imageOps) {\n var images = new Array(numBuffers);\n for (b = 0; b < numBuffers; ++b) {\n images[b] = newWorkerImageData(\n new Uint8ClampedArray(buffers[b]), width, height);\n }\n output = operation(images, meta).data;\n } else {\n output = new Uint8ClampedArray(numBytes);\n var arrays = new Array(numBuffers);\n var pixels = new Array(numBuffers);\n for (b = 0; b < numBuffers; ++b) {\n arrays[b] = new Uint8ClampedArray(buffers[b]);\n pixels[b] = [0, 0, 0, 0];\n }\n for (var i = 0; i < numBytes; i += 4) {\n for (var j = 0; j < numBuffers; ++j) {\n var array = arrays[j];\n pixels[j][0] = array[i];\n pixels[j][1] = array[i + 1];\n pixels[j][2] = array[i + 2];\n pixels[j][3] = array[i + 3];\n }\n var pixel = operation(pixels, meta);\n output[i] = pixel[0];\n output[i + 1] = pixel[1];\n output[i + 2] = pixel[2];\n output[i + 3] = pixel[3];\n }\n }\n return output.buffer;\n };\n}\n\n/**\n * Create a worker for running operations.\n * @param {Object} config Configuration.\n * @param {function(MessageEvent)} onMessage Called with a message event.\n * @return {Worker} The worker.\n */\nfunction createWorker(config, onMessage) {\n var lib = Object.keys(config.lib || {}).map(function(name) {\n return 'var ' + name + ' = ' + config.lib[name].toString() + ';';\n });\n\n var lines = lib.concat([\n 'var __minion__ = (' + createMinion.toString() + ')(', config.operation.toString(), ');',\n 'self.addEventListener(\"message\", function(event) {',\n ' var buffer = __minion__(event.data);',\n ' self.postMessage({buffer: buffer, meta: event.data.meta}, [buffer]);',\n '});'\n ]);\n\n var blob = new Blob(lines, {type: 'text/javascript'});\n var source = URL.createObjectURL(blob);\n var worker = new Worker(source);\n worker.addEventListener('message', onMessage);\n return worker;\n}\n\n/**\n * Create a faux worker for running operations.\n * @param {Object} config Configuration.\n * @param {function(MessageEvent)} onMessage Called with a message event.\n * @return {Object} The faux worker.\n */\nfunction createFauxWorker(config, onMessage) {\n var minion = createMinion(config.operation);\n return {\n postMessage: function(data) {\n setTimeout(function() {\n onMessage({'data': {'buffer': minion(data), 'meta': data['meta']}});\n }, 0);\n }\n };\n}\n\n/**\n * A processor runs pixel or image operations in workers.\n * @param {Object} config Configuration.\n */\nfunction Processor(config) {\n this._imageOps = !!config.imageOps;\n var threads;\n if (config.threads === 0) {\n threads = 0;\n } else if (this._imageOps) {\n threads = 1;\n } else {\n threads = config.threads || 1;\n }\n var workers = [];\n if (threads) {\n for (var i = 0; i < threads; ++i) {\n workers[i] = createWorker(config, this._onWorkerMessage.bind(this, i));\n }\n } else {\n workers[0] = createFauxWorker(config, this._onWorkerMessage.bind(this, 0));\n }\n this._workers = workers;\n this._queue = [];\n this._maxQueueLength = config.queue || Infinity;\n this._running = 0;\n this._dataLookup = {};\n this._job = null;\n}\n\n/**\n * Run operation on input data.\n * @param {Array.
} inputs Array of pixels or image data\n * (depending on the operation type).\n * @param {Object} meta A user data object. This is passed to all operations\n * and must be serializable.\n * @param {function(Error, ImageData, Object)} callback Called when work\n * completes. The first argument is any error. The second is the ImageData\n * generated by operations. The third is the user data object.\n */\nProcessor.prototype.process = function(inputs, meta, callback) {\n this._enqueue({\n inputs: inputs,\n meta: meta,\n callback: callback\n });\n this._dispatch();\n};\n\n/**\n * Stop responding to any completed work and destroy the processor.\n */\nProcessor.prototype.destroy = function() {\n for (var key in this) {\n this[key] = null;\n }\n this._destroyed = true;\n};\n\n/**\n * Add a job to the queue.\n * @param {Object} job The job.\n */\nProcessor.prototype._enqueue = function(job) {\n this._queue.push(job);\n while (this._queue.length > this._maxQueueLength) {\n this._queue.shift().callback(null, null);\n }\n};\n\n/**\n * Dispatch a job.\n */\nProcessor.prototype._dispatch = function() {\n if (this._running === 0 && this._queue.length > 0) {\n var job = this._job = this._queue.shift();\n var width = job.inputs[0].width;\n var height = job.inputs[0].height;\n var buffers = job.inputs.map(function(input) {\n return input.data.buffer;\n });\n var threads = this._workers.length;\n this._running = threads;\n if (threads === 1) {\n this._workers[0].postMessage({\n 'buffers': buffers,\n 'meta': job.meta,\n 'imageOps': this._imageOps,\n 'width': width,\n 'height': height\n }, buffers);\n } else {\n var length = job.inputs[0].data.length;\n var segmentLength = 4 * Math.ceil(length / 4 / threads);\n for (var i = 0; i < threads; ++i) {\n var offset = i * segmentLength;\n var slices = [];\n for (var j = 0, jj = buffers.length; j < jj; ++j) {\n slices.push(buffers[i].slice(offset, offset + segmentLength));\n }\n this._workers[i].postMessage({\n 'buffers': slices,\n 'meta': job.meta,\n 'imageOps': this._imageOps,\n 'width': width,\n 'height': height\n }, slices);\n }\n }\n }\n};\n\n/**\n * Handle messages from the worker.\n * @param {number} index The worker index.\n * @param {MessageEvent} event The message event.\n */\nProcessor.prototype._onWorkerMessage = function(index, event) {\n if (this._destroyed) {\n return;\n }\n this._dataLookup[index] = event.data;\n --this._running;\n if (this._running === 0) {\n this._resolveJob();\n }\n};\n\n/**\n * Resolve a job. If there are no more worker threads, the processor callback\n * will be called.\n */\nProcessor.prototype._resolveJob = function() {\n var job = this._job;\n var threads = this._workers.length;\n var data, meta;\n if (threads === 1) {\n data = new Uint8ClampedArray(this._dataLookup[0]['buffer']);\n meta = this._dataLookup[0]['meta'];\n } else {\n var length = job.inputs[0].data.length;\n data = new Uint8ClampedArray(length);\n meta = new Array(length);\n var segmentLength = 4 * Math.ceil(length / 4 / threads);\n for (var i = 0; i < threads; ++i) {\n var buffer = this._dataLookup[i]['buffer'];\n var offset = i * segmentLength;\n data.set(new Uint8ClampedArray(buffer), offset);\n meta[i] = this._dataLookup[i]['meta'];\n }\n }\n this._job = null;\n this._dataLookup = {};\n job.callback(null,\n newImageData(data, job.inputs[0].width, job.inputs[0].height), meta);\n this._dispatch();\n};\n\nmodule.exports = Processor;\n","var hasImageData = true;\ntry {\n new ImageData(10, 10);\n} catch (_) {\n hasImageData = false;\n}\n\nvar context = document.createElement('canvas').getContext('2d');\n\nfunction newImageData(data, width, height) {\n if (hasImageData) {\n return new ImageData(data, width, height);\n } else {\n var imageData = context.createImageData(width, height);\n imageData.data.set(data);\n return imageData;\n }\n}\n\nexports.newImageData = newImageData;\n","/**\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","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/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","/**\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 } object The object from which to get the values.\n * @return {!Array } 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/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 } 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 } arr The array to modify.\n * @param {!Array |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 } 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 } 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 } */\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/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 }\n */\n _this.pendingRemovals_ = {};\n /**\n * @private\n * @type {!Object }\n */\n _this.dispatching_ = {};\n /**\n * @private\n * @type {!Object >}\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 } 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 } 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 } 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 } type The event type or array of event types.\n * @param {function(?): ?} listener The listener function.\n * @return {import(\"./events.js\").EventsKey|Array } 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 } 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 } 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 =} 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 }\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 } 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 } 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 } 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 }\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","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 =} 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 }\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 } arr Array.\n * @return {Collection } 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 ): *} 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 } 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","/**\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","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 =} 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 } */\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} 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 }\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/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 } Extent\n * @api\n */\n/**\n * Build an extent that includes all given coordinates.\n *\n * @param {Array } 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 } xs Xs.\n * @param {Array } 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 } 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 } 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 >} 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 } 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 } 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 >} 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/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/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/geom/flat/transform\n */\n/**\n * @param {Array } 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 =} opt_dest Destination.\n * @return {Array } 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 } 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 } anchor Rotation anchor point.\n * @param {Array =} opt_dest Destination.\n * @return {Array } 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 } 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 } anchor Scale anchor point.\n * @param {Array =} opt_dest Destination.\n * @return {Array } 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 } 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 =} opt_dest Destination.\n * @return {Array } 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/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 >} mat Augmented matrix (n x n + 1 column)\n * in row-major order.\n * @return {Array } 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/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 } 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/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 }\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 }\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 } input Input array of coordinate values.\n * @param {Array =} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array } 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 } input Input array of coordinate values.\n * @param {Array =} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension (default is `2`).\n * @return {Array } 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 }\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 >}\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 }\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 , Array =, number=): Array } TransformFunction\n * @api\n */\nexport { METERS_PER_UNIT };\nexport { Projection };\n/**\n * @param {Array } input Input coordinate array.\n * @param {Array =} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array } 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 } input Input coordinate array.\n * @param {Array =} opt_output Output array of coordinate values.\n * @param {number=} opt_dimension Dimension.\n * @return {Array } 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 } 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 } 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 } projections1 Projections with equal\n * meaning.\n * @param {Array } 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 } input Input.\n * @param {Array =} opt_output Output.\n * @param {number=} opt_dimension Dimension.\n * @return {Array } 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 } coordinate Input coordinate.\n * @param {ProjectionLike} sourceProjection The input coordinate projection.\n * @returns {Array } 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 } coordinate Input coordinate.\n * @param {ProjectionLike} destProjection The destination projection.\n * @returns {Array } 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","/**\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 } 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 }\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 } 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 } 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 =} opt_dest Destination.\n * @return {Array } 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 } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >} 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 } 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 } 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 } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >} 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 } 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 } closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array =} 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } 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 } closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array =} 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >} 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 } closestPoint Closest point.\n * @param {number} minSquaredDistance Minimum squared distance.\n * @param {Array =} 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 } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >} coordinatess Coordinatess.\n * @param {number} stride Stride.\n * @param {Array =} opt_ends Ends.\n * @return {Array } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >>} coordinatesss Coordinatesss.\n * @param {number} stride Stride.\n * @param {Array >=} opt_endss Endss.\n * @return {Array >} 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {number} end End.\n * @param {number} stride Stride.\n * @param {Array =} opt_coordinates Coordinates.\n * @return {Array } 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } ends Ends.\n * @param {number} stride Stride.\n * @param {Array >=} opt_coordinatess Coordinatess.\n * @return {Array >} 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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array >} endss Endss.\n * @param {number} stride Stride.\n * @param {Array >>=} opt_coordinatesss\n * Coordinatesss.\n * @return {Array >>} 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 } 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 =} opt_simplifiedFlatCoordinates Simplified flat\n * coordinates.\n * @return {Array } 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 } 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 } 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 } */\n var markers = new Array(n);\n markers[0] = 1;\n markers[n - 1] = 1;\n /** @type {Array } */\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 } flatCoordinates Flat coordinates.\n * @param {number} offset Offset.\n * @param {Array } ends Ends.\n * @param {number} stride Stride.\n * @param {number} squaredTolerance Squared tolerance.\n * @param {Array