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* @module ol/pointer/EventType\n */\n/**\n * Constants for event names.\n * @enum {string}\n */\nexport default {\n    POINTERMOVE: 'pointermove',\n    POINTERDOWN: 'pointerdown',\n    POINTERUP: 'pointerup',\n    POINTEROVER: 'pointerover',\n    POINTEROUT: 'pointerout',\n    POINTERENTER: 'pointerenter',\n    POINTERLEAVE: 'pointerleave',\n    POINTERCANCEL: 'pointercancel',\n};\n//# sourceMappingURL=EventType.js.map","/**\n * @module ol/proj\n */\n/**\n * The ol/proj module stores:\n * * a list of {@link module:ol/proj/Projection~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~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~Projection} with\n * {@link module:ol/proj.addProjection}. See examples/wms-no-proj for an example of\n * this.\n */\nimport Projection from './proj/Projection.js';\nimport Units, { METERS_PER_UNIT } from './proj/Units.js';\nimport { PROJECTIONS as EPSG3857_PROJECTIONS, fromEPSG4326, toEPSG4326, } from './proj/epsg3857.js';\nimport { PROJECTIONS as EPSG4326_PROJECTIONS } from './proj/epsg4326.js';\nimport { add as addProj, clear as clearProj, get as getProj, } from './proj/projections.js';\nimport { add as addTransformFunc, clear as clearTransformFuncs, get as getTransformFunc, } from './proj/transforms.js';\nimport { applyTransform, getWidth } from './extent.js';\nimport { clamp, modulo } from './math.js';\nimport { equals, getWorldsAway } from './coordinate.js';\nimport { getDistance } from './sphere.js';\n/**\n * A projection as {@link module:ol/proj/Projection~Projection}, SRS identifier\n * string or undefined.\n * @typedef {Projection|string|undefined} ProjectionLike\n * @api\n */\n/**\n * A transform function accepts an array of input coordinate values, an optional\n * output array, and an optional dimension (default should be 2).  The function\n * transforms the input coordinate values, populates the output array, and\n * returns the output array.\n *\n * @typedef {function(Array<number>, Array<number>=, number=): Array<number>} TransformFunction\n * @api\n */\nexport { METERS_PER_UNIT };\nexport { Projection };\nvar showCoordinateWarning = true;\n/**\n * @param {boolean} [opt_disable = true] Disable console info about `useGeographic()`\n */\nexport function disableCoordinateWarning(opt_disable) {\n    var hide = opt_disable === undefined ? true : opt_disable;\n    showCoordinateWarning = !hide;\n}\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>} [opt_output] Output array of coordinate values.\n * @param {number} [opt_dimension] Dimension.\n * @return {Array<number>} Output coordinate array (new array, same coordinate\n *     values).\n */\nexport function cloneTransform(input, opt_output, opt_dimension) {\n    var output;\n    if (opt_output !== undefined) {\n        for (var i = 0, ii = input.length; i < ii; ++i) {\n            opt_output[i] = input[i];\n        }\n        output = opt_output;\n    }\n    else {\n        output = input.slice();\n    }\n    return output;\n}\n/**\n * @param {Array<number>} input Input coordinate array.\n * @param {Array<number>} [opt_output] Output array of coordinate values.\n * @param {number} [opt_dimension] Dimension.\n * @return {Array<number>} Input coordinate array (same array as input).\n */\nexport function identityTransform(input, opt_output, opt_dimension) {\n    if (opt_output !== undefined && input !== opt_output) {\n        for (var i = 0, ii = input.length; i < ii; ++i) {\n            opt_output[i] = input[i];\n        }\n        input = opt_output;\n    }\n    return input;\n}\n/**\n * Add a Projection object to the list of supported projections that can be\n * looked up by their code.\n *\n * @param {Projection} projection Projection instance.\n * @api\n */\nexport function addProjection(projection) {\n    addProj(projection.getCode(), projection);\n    addTransformFunc(projection, projection, cloneTransform);\n}\n/**\n * @param {Array<Projection>} projections Projections.\n */\nexport function addProjections(projections) {\n    projections.forEach(addProjection);\n}\n/**\n * Fetches a Projection object for the code specified.\n *\n * @param {ProjectionLike} projectionLike Either a code string which is\n *     a combination of authority and identifier such as \"EPSG:4326\", or an\n *     existing projection object, or undefined.\n * @return {Projection|null} 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 {import(\"./proj/Units.js\").default} [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 =\n                    (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            if (toEPSG4326_1 === identityTransform && units !== Units.DEGREES) {\n                // no transform is available\n                pointResolution = resolution * projection.getMetersPerUnit();\n            }\n            else {\n                var vertices = [\n                    point[0] - resolution / 2,\n                    point[1],\n                    point[0] + resolution / 2,\n                    point[1],\n                    point[0],\n                    point[1] - resolution / 2,\n                    point[0],\n                    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            }\n            var metersPerUnit = opt_units\n                ? METERS_PER_UNIT[opt_units]\n                : projection.getMetersPerUnit();\n            if (metersPerUnit !== undefined) {\n                pointResolution /= metersPerUnit;\n            }\n        }\n    }\n    return pointResolution;\n}\n/**\n * Registers transformation functions that don't alter coordinates. Those allow\n * to transform between projections with equal meaning.\n *\n * @param {Array<Projection>} projections Projections.\n * @api\n */\nexport function addEquivalentProjections(projections) {\n    addProjections(projections);\n    projections.forEach(function (source) {\n        projections.forEach(function (destination) {\n            if (source !== destination) {\n                addTransformFunc(source, destination, cloneTransform);\n            }\n        });\n    });\n}\n/**\n * Registers transformation functions to convert coordinates in any projection\n * in projection1 to any projection in projection2.\n *\n * @param {Array<Projection>} projections1 Projections with equal\n *     meaning.\n * @param {Array<Projection>} projections2 Projections with equal\n *     meaning.\n * @param {TransformFunction} forwardTransform Transformation from any\n *   projection in projection1 to any projection in projection2.\n * @param {TransformFunction} inverseTransform Transform from any projection\n *   in projection2 to any projection in projection1..\n */\nexport function addEquivalentTransforms(projections1, projections2, forwardTransform, inverseTransform) {\n    projections1.forEach(function (projection1) {\n        projections2.forEach(function (projection2) {\n            addTransformFunc(projection1, projection2, forwardTransform);\n            addTransformFunc(projection2, projection1, inverseTransform);\n        });\n    });\n}\n/**\n * Clear all cached projections and transforms.\n */\nexport function clearAllProjections() {\n    clearProj();\n    clearTransformFuncs();\n}\n/**\n * @param {Projection|string|undefined} projection Projection.\n * @param {string} defaultCode Default code.\n * @return {Projection} Projection.\n */\nexport function createProjection(projection, defaultCode) {\n    if (!projection) {\n        return get(defaultCode);\n    }\n    else if (typeof projection === 'string') {\n        return get(projection);\n    }\n    else {\n        return /** @type {Projection} */ (projection);\n    }\n}\n/**\n * Creates a {@link module:ol/proj~TransformFunction} from a simple 2D coordinate transform\n * function.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} coordTransform Coordinate\n *     transform.\n * @return {TransformFunction} Transform function.\n */\nexport function createTransformFromCoordinateTransform(coordTransform) {\n    return (\n    /**\n     * @param {Array<number>} input Input.\n     * @param {Array<number>} [opt_output] Output.\n     * @param {number} [opt_dimension] Dimension.\n     * @return {Array<number>} Output.\n     */\n    function (input, opt_output, opt_dimension) {\n        var length = input.length;\n        var dimension = opt_dimension !== undefined ? opt_dimension : 2;\n        var output = opt_output !== undefined ? opt_output : new Array(length);\n        for (var i = 0; i < length; i += dimension) {\n            var point = coordTransform(input.slice(i, i + dimension));\n            var pointLength = point.length;\n            for (var j = 0, jj = dimension; j < jj; ++j) {\n                output[i + j] = j >= pointLength ? input[i + j] : point[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}. If the transform function can only\n *     transform less dimensions than the input coordinate, it is supposeed to return a coordinate\n *     with only the length it can transform. The other dimensions will be taken unchanged from the\n *     source.\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    disableCoordinateWarning();\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|null}\n */\nvar userProjection = null;\n/**\n * Set the projection for coordinates supplied from and returned by API methods.\n * This includes all API methods except for those interacting with tile grids.\n * @param {ProjectionLike} projection The user projection.\n * @api\n */\nexport function setUserProjection(projection) {\n    userProjection = get(projection);\n}\n/**\n * Clear the user projection if set.\n * @api\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 * @return {Projection|null} The user projection (or null if not set).\n * @api\n */\nexport function getUserProjection() {\n    return userProjection;\n}\n/**\n * Use geographic coordinates (WGS-84 datum) in API methods.  This includes all API\n * methods except for those interacting with tile grids.\n * @api\n */\nexport function useGeographic() {\n    setUserProjection('EPSG:4326');\n}\n/**\n * Return a coordinate transformed into the user projection.  If no user projection\n * is set, the original coordinate is returned.\n * @param {Array<number>} coordinate Input coordinate.\n * @param {ProjectionLike} sourceProjection The input coordinate projection.\n * @return {Array<number>} The input coordinate in the user projection.\n */\nexport function toUserCoordinate(coordinate, sourceProjection) {\n    if (!userProjection) {\n        return coordinate;\n    }\n    return transform(coordinate, sourceProjection, userProjection);\n}\n/**\n * Return a coordinate transformed from the user projection.  If no user projection\n * is set, the original coordinate is returned.\n * @param {Array<number>} coordinate Input coordinate.\n * @param {ProjectionLike} destProjection The destination projection.\n * @return {Array<number>} The input coordinate transformed.\n */\nexport function fromUserCoordinate(coordinate, destProjection) {\n    if (!userProjection) {\n        if (showCoordinateWarning &&\n            !equals(coordinate, [0, 0]) &&\n            coordinate[0] >= -180 &&\n            coordinate[0] <= 180 &&\n            coordinate[1] >= -90 &&\n            coordinate[1] <= 90) {\n            showCoordinateWarning = false;\n            // eslint-disable-next-line no-console\n            console.warn('Call useGeographic() from ol/proj once to work with [longitude, latitude] coordinates.');\n        }\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 * @return {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 * @return {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 * Return the resolution in user projection units per pixel. If no user projection\n * is set, or source or user projection are missing units, the original resolution\n * is returned.\n * @param {number} resolution Resolution in input projection units per pixel.\n * @param {ProjectionLike} sourceProjection The input projection.\n * @return {number} Resolution in user projection units per pixel.\n */\nexport function toUserResolution(resolution, sourceProjection) {\n    if (!userProjection) {\n        return resolution;\n    }\n    var sourceUnits = get(sourceProjection).getUnits();\n    var userUnits = userProjection.getUnits();\n    return sourceUnits && userUnits\n        ? (resolution * METERS_PER_UNIT[sourceUnits]) / METERS_PER_UNIT[userUnits]\n        : resolution;\n}\n/**\n * Return the resolution in user projection units per pixel. If no user projection\n * is set, or source or user projection are missing units, the original resolution\n * is returned.\n * @param {number} resolution Resolution in user projection units per pixel.\n * @param {ProjectionLike} destProjection The destination projection.\n * @return {number} Resolution in destination projection units per pixel.\n */\nexport function fromUserResolution(resolution, destProjection) {\n    if (!userProjection) {\n        return resolution;\n    }\n    var sourceUnits = get(destProjection).getUnits();\n    var userUnits = userProjection.getUnits();\n    return sourceUnits && userUnits\n        ? (resolution * METERS_PER_UNIT[userUnits]) / METERS_PER_UNIT[sourceUnits]\n        : resolution;\n}\n/**\n * Creates a safe coordinate transform function from a coordinate transform function.\n * \"Safe\" means that it can handle wrapping of x-coordinates for global projections,\n * and that coordinates exceeding the source projection validity extent's range will be\n * clamped to the validity range.\n * @param {Projection} sourceProj Source projection.\n * @param {Projection} destProj Destination projection.\n * @param {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} transform Transform function (source to destiation).\n * @return {function(import(\"./coordinate.js\").Coordinate): import(\"./coordinate.js\").Coordinate} Safe transform function (source to destiation).\n */\nexport function createSafeCoordinateTransform(sourceProj, destProj, transform) {\n    return function (coord) {\n        var transformed, worldsAway;\n        if (sourceProj.canWrapX()) {\n            var sourceExtent = sourceProj.getExtent();\n            var sourceExtentWidth = getWidth(sourceExtent);\n            coord = coord.slice(0);\n            worldsAway = getWorldsAway(coord, sourceProj, sourceExtentWidth);\n            if (worldsAway) {\n                // Move x to the real world\n                coord[0] = coord[0] - worldsAway * sourceExtentWidth;\n            }\n            coord[0] = clamp(coord[0], sourceExtent[0], sourceExtent[2]);\n            coord[1] = clamp(coord[1], sourceExtent[1], sourceExtent[3]);\n            transformed = transform(coord);\n        }\n        else {\n            transformed = transform(coord);\n        }\n        if (worldsAway && destProj.canWrapX()) {\n            // Move transformed coordinate back to the offset world\n            transformed[0] += worldsAway * getWidth(destProj.getExtent());\n        }\n        return transformed;\n    };\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/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 a {@link module:ol/coordinate~Coordinate 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 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_ =\n            options.worldExtent !== undefined ? options.worldExtent : null;\n        /**\n         * @private\n         * @type {string}\n         */\n        this.axisOrientation_ =\n            options.axisOrientation !== undefined ? 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","/**\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    /**\n     * Radians\n     * @api\n     */\n    RADIANS: 'radians',\n    /**\n     * Degrees\n     * @api\n     */\n    DEGREES: 'degrees',\n    /**\n     * Feet\n     * @api\n     */\n    FEET: 'ft',\n    /**\n     * Meters\n     * @api\n     */\n    METERS: 'm',\n    /**\n     * Pixels\n     * @api\n     */\n    PIXELS: 'pixels',\n    /**\n     * Tile Pixels\n     * @api\n     */\n    TILE_PIXELS: 'tile-pixels',\n    /**\n     * US Feet\n     * @api\n     */\n    USFEET: 'us-ft',\n};\n/**\n * See http://duff.ess.washington.edu/data/raster/drg/docs/geotiff.txt\n * @type {Object<number, Units>}\n */\nvar unitByCode = {\n    '9001': Units.METERS,\n    '9002': Units.FEET,\n    '9003': Units.USFEET,\n    '9101': Units.RADIANS,\n    '9102': Units.DEGREES,\n};\n/**\n * @param {number} code Unit code.\n * @return {Units} Units.\n */\nexport function fromCode(code) {\n    return unitByCode[code];\n}\n/**\n * Meters per unit lookup table.\n * @const\n * @type {Object<Units, number>}\n * @api\n */\nexport var METERS_PER_UNIT = {};\n// use the radius of the Normal sphere\nMETERS_PER_UNIT[Units.RADIANS] = 6370997 / (2 * Math.PI);\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","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 (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        if (typeof b !== \"function\" && b !== null)\n            throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\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 Projection from './Projection.js';\nimport Units from './Units.js';\nimport { cosh } from '../math.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 = [-HALF_SIZE, -HALF_SIZE, HALF_SIZE, HALF_SIZE];\n/**\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var WORLD_EXTENT = [-180, -85, 180, 85];\n/**\n * Maximum safe value in y direction\n * @const\n * @type {number}\n */\nexport var MAX_SAFE_Y = RADIUS * Math.log(Math.tan(Math.PI / 2));\n/**\n * @classdesc\n * Projection object for web/spherical Mercator (EPSG:3857).\n */\nvar EPSG3857Projection = /** @class */ (function (_super) {\n    __extends(EPSG3857Projection, _super);\n    /**\n     * @param {string} code Code.\n     */\n    function EPSG3857Projection(code) {\n        return _super.call(this, {\n            code: code,\n            units: Units.METERS,\n            extent: EXTENT,\n            global: true,\n            worldExtent: WORLD_EXTENT,\n            getPointResolution: function (resolution, point) {\n                return resolution / cosh(point[1] / RADIUS);\n            },\n        }) || this;\n    }\n    return EPSG3857Projection;\n}(Projection));\n/**\n * Projections equal to EPSG:3857.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n    new EPSG3857Projection('EPSG:3857'),\n    new EPSG3857Projection('EPSG:102100'),\n    new EPSG3857Projection('EPSG:102113'),\n    new EPSG3857Projection('EPSG:900913'),\n    new EPSG3857Projection('http://www.opengis.net/def/crs/EPSG/0/3857'),\n    new EPSG3857Projection('http://www.opengis.net/gml/srs/epsg.xml#3857'),\n];\n/**\n * Transformation from EPSG:4326 to EPSG:3857.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>} [opt_output] Output array of coordinate values.\n * @param {number} [opt_dimension] Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function fromEPSG4326(input, opt_output, opt_dimension) {\n    var length = input.length;\n    var dimension = opt_dimension > 1 ? opt_dimension : 2;\n    var output = opt_output;\n    if (output === undefined) {\n        if (dimension > 2) {\n            // preserve values beyond second dimension\n            output = input.slice();\n        }\n        else {\n            output = new Array(length);\n        }\n    }\n    for (var i = 0; i < length; i += dimension) {\n        output[i] = (HALF_SIZE * input[i]) / 180;\n        var y = RADIUS * Math.log(Math.tan((Math.PI * (+input[i + 1] + 90)) / 360));\n        if (y > MAX_SAFE_Y) {\n            y = MAX_SAFE_Y;\n        }\n        else if (y < -MAX_SAFE_Y) {\n            y = -MAX_SAFE_Y;\n        }\n        output[i + 1] = y;\n    }\n    return output;\n}\n/**\n * Transformation from EPSG:3857 to EPSG:4326.\n *\n * @param {Array<number>} input Input array of coordinate values.\n * @param {Array<number>} [opt_output] Output array of coordinate values.\n * @param {number} [opt_dimension] Dimension (default is `2`).\n * @return {Array<number>} Output array of coordinate values.\n */\nexport function toEPSG4326(input, opt_output, opt_dimension) {\n    var length = input.length;\n    var dimension = opt_dimension > 1 ? opt_dimension : 2;\n    var output = opt_output;\n    if (output === undefined) {\n        if (dimension > 2) {\n            // preserve values beyond second dimension\n            output = input.slice();\n        }\n        else {\n            output = new Array(length);\n        }\n    }\n    for (var i = 0; i < length; i += dimension) {\n        output[i] = (180 * input[i]) / HALF_SIZE;\n        output[i + 1] =\n            (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 (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n        return extendStatics(d, b);\n    };\n    return function (d, b) {\n        if (typeof b !== \"function\" && b !== null)\n            throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n        extendStatics(d, b);\n        function __() { this.constructor = d; }\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\n/**\n * @module ol/proj/epsg4326\n */\nimport Projection from './Projection.js';\nimport Units from './Units.js';\n/**\n * Semi-major radius of the WGS84 ellipsoid.\n *\n * @const\n * @type {number}\n */\nexport var RADIUS = 6378137;\n/**\n * Extent of the EPSG:4326 projection which is the whole world.\n *\n * @const\n * @type {import(\"../extent.js\").Extent}\n */\nexport var EXTENT = [-180, -90, 180, 90];\n/**\n * @const\n * @type {number}\n */\nexport var METERS_PER_UNIT = (Math.PI * RADIUS) / 180;\n/**\n * @classdesc\n * Projection object for WGS84 geographic coordinates (EPSG:4326).\n *\n * Note that OpenLayers does not strictly comply with the EPSG definition.\n * The EPSG registry defines 4326 as a CRS for Latitude,Longitude (y,x).\n * OpenLayers treats EPSG:4326 as a pseudo-projection, with x,y coordinates.\n */\nvar EPSG4326Projection = /** @class */ (function (_super) {\n    __extends(EPSG4326Projection, _super);\n    /**\n     * @param {string} code Code.\n     * @param {string} [opt_axisOrientation] Axis orientation.\n     */\n    function EPSG4326Projection(code, opt_axisOrientation) {\n        return _super.call(this, {\n            code: code,\n            units: Units.DEGREES,\n            extent: EXTENT,\n            axisOrientation: opt_axisOrientation,\n            global: true,\n            metersPerUnit: METERS_PER_UNIT,\n            worldExtent: EXTENT,\n        }) || this;\n    }\n    return EPSG4326Projection;\n}(Projection));\n/**\n * Projections equal to EPSG:4326.\n *\n * @const\n * @type {Array<import(\"./Projection.js\").default>}\n */\nexport var PROJECTIONS = [\n    new EPSG4326Projection('CRS:84'),\n    new EPSG4326Projection('EPSG:4326', 'neu'),\n    new EPSG4326Projection('urn:ogc:def:crs:OGC:1.3:CRS84'),\n    new EPSG4326Projection('urn:ogc:def:crs:OGC:2:84'),\n    new EPSG4326Projection('http://www.opengis.net/def/crs/OGC/1.3/CRS84'),\n    new EPSG4326Projection('http://www.opengis.net/gml/srs/epsg.xml#4326', 'neu'),\n    new EPSG4326Projection('http://www.opengis.net/def/crs/EPSG/0/4326', 'neu'),\n];\n//# sourceMappingURL=epsg4326.js.map"],"names":[],"sourceRoot":""}