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import Credit from "../Core/Credit.js";
import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import DeveloperError from "../Core/DeveloperError.js";
import Event from "../Core/Event.js";
import Resource from "../Core/Resource.js";
import WebMercatorTilingScheme from "../Core/WebMercatorTilingScheme.js";
import ImageryProvider from "./ImageryProvider.js";
import TimeDynamicImagery from "./TimeDynamicImagery.js";
const defaultParameters = Object.freeze({
service: "WMTS",
version: "1.0.0",
request: "GetTile",
});
/**
* @typedef {object} WebMapTileServiceImageryProvider.ConstructorOptions
*
* Initialization options for the WebMapTileServiceImageryProvider constructor
*
* @property {Resource|string} url The base URL for the WMTS GetTile operation (for KVP-encoded requests) or the tile-URL template (for RESTful requests). The tile-URL template should contain the following variables: {style}, {TileMatrixSet}, {TileMatrix}, {TileRow}, {TileCol}. The first two are optional if actual values are hardcoded or not required by the server. The {s} keyword may be used to specify subdomains.
* @property {string} [format='image/jpeg'] The MIME type for images to retrieve from the server.
* @property {string} layer The layer name for WMTS requests.
* @property {string} style The style name for WMTS requests.
* @property {string} tileMatrixSetID The identifier of the TileMatrixSet to use for WMTS requests.
* @property {Array} [tileMatrixLabels] A list of identifiers in the TileMatrix to use for WMTS requests, one per TileMatrix level.
* @property {Clock} [clock] A Clock instance that is used when determining the value for the time dimension. Required when `times` is specified.
* @property {TimeIntervalCollection} [times] TimeIntervalCollection with its <code>data</code> property being an object containing time dynamic dimension and their values.
* @property {object} [dimensions] A object containing static dimensions and their values.
* @property {number} [tileWidth=256] The tile width in pixels.
* @property {number} [tileHeight=256] The tile height in pixels.
* @property {TilingScheme} [tilingScheme] The tiling scheme corresponding to the organization of the tiles in the TileMatrixSet.
* @property {Rectangle} [rectangle=Rectangle.MAX_VALUE] The rectangle covered by the layer.
* @property {number} [minimumLevel=0] The minimum level-of-detail supported by the imagery provider.
* @property {number} [maximumLevel] The maximum level-of-detail supported by the imagery provider, or undefined if there is no limit.
* @property {Ellipsoid} [ellipsoid] The ellipsoid. If not specified, the WGS84 ellipsoid is used.
* @property {Credit|string} [credit] A credit for the data source, which is displayed on the canvas.
* @property {string|string[]} [subdomains='abc'] The subdomains to use for the <code>{s}</code> placeholder in the URL template.
* If this parameter is a single string, each character in the string is a subdomain. If it is
* an array, each element in the array is a subdomain.
*/
/**
* Provides tiled imagery served by {@link http://www.opengeospatial.org/standards/wmts|WMTS 1.0.0} compliant servers.
* This provider supports HTTP KVP-encoded and RESTful GetTile requests, but does not yet support the SOAP encoding.
*
* @alias WebMapTileServiceImageryProvider
* @constructor
*
* @param {WebMapTileServiceImageryProvider.ConstructorOptions} options Object describing initialization options
*
* @demo {@link https://sandcastle.cesium.com/index.html?src=Web%20Map%20Tile%20Service%20with%20Time.html|Cesium Sandcastle Web Map Tile Service with Time Demo}
*
* @example
* // Example 1. USGS shaded relief tiles (KVP)
* const shadedRelief1 = new Cesium.WebMapTileServiceImageryProvider({
* url : 'https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/WMTS',
* layer : 'USGSShadedReliefOnly',
* style : 'default',
* format : 'image/jpeg',
* tileMatrixSetID : 'default028mm',
* // tileMatrixLabels : ['default028mm:0', 'default028mm:1', 'default028mm:2' ...],
* maximumLevel: 19,
* credit : new Cesium.Credit('U. S. Geological Survey')
* });
* viewer.imageryLayers.addImageryProvider(shadedRelief1);
*
* @example
* // Example 2. USGS shaded relief tiles (RESTful)
* const shadedRelief2 = new Cesium.WebMapTileServiceImageryProvider({
* url : 'https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/WMTS/tile/1.0.0/USGSShadedReliefOnly/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpg',
* layer : 'USGSShadedReliefOnly',
* style : 'default',
* format : 'image/jpeg',
* tileMatrixSetID : 'default028mm',
* maximumLevel: 19,
* credit : new Cesium.Credit('U. S. Geological Survey')
* });
* viewer.imageryLayers.addImageryProvider(shadedRelief2);
*
* @example
* // Example 3. NASA time dynamic weather data (RESTful)
* const times = Cesium.TimeIntervalCollection.fromIso8601({
* iso8601: '2015-07-30/2017-06-16/P1D',
* dataCallback: function dataCallback(interval, index) {
* return {
* Time: Cesium.JulianDate.toIso8601(interval.start)
* };
* }
* });
* const weather = new Cesium.WebMapTileServiceImageryProvider({
* url : 'https://gibs.earthdata.nasa.gov/wmts/epsg4326/best/AMSR2_Snow_Water_Equivalent/default/{Time}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png',
* layer : 'AMSR2_Snow_Water_Equivalent',
* style : 'default',
* tileMatrixSetID : '2km',
* maximumLevel : 5,
* format : 'image/png',
* clock: clock,
* times: times,
* credit : new Cesium.Credit('NASA Global Imagery Browse Services for EOSDIS')
* });
* viewer.imageryLayers.addImageryProvider(weather);
*
* @see ArcGisMapServerImageryProvider
* @see BingMapsImageryProvider
* @see GoogleEarthEnterpriseMapsProvider
* @see OpenStreetMapImageryProvider
* @see SingleTileImageryProvider
* @see TileMapServiceImageryProvider
* @see WebMapServiceImageryProvider
* @see UrlTemplateImageryProvider
*/
function WebMapTileServiceImageryProvider(options) {
options = options ?? Frozen.EMPTY_OBJECT;
//>>includeStart('debug', pragmas.debug);
if (!defined(options.url)) {
throw new DeveloperError("options.url is required.");
}
if (!defined(options.layer)) {
throw new DeveloperError("options.layer is required.");
}
if (!defined(options.style)) {
throw new DeveloperError("options.style is required.");
}
if (!defined(options.tileMatrixSetID)) {
throw new DeveloperError("options.tileMatrixSetID is required.");
}
if (defined(options.times) && !defined(options.clock)) {
throw new DeveloperError(
"options.times was specified, so options.clock is required.",
);
}
//>>includeEnd('debug');
this._defaultAlpha = undefined;
this._defaultNightAlpha = undefined;
this._defaultDayAlpha = undefined;
this._defaultBrightness = undefined;
this._defaultContrast = undefined;
this._defaultHue = undefined;
this._defaultSaturation = undefined;
this._defaultGamma = undefined;
this._defaultMinificationFilter = undefined;
this._defaultMagnificationFilter = undefined;
const resource = Resource.createIfNeeded(options.url);
const style = options.style;
const tileMatrixSetID = options.tileMatrixSetID;
const url = resource.url;
const bracketMatch = url.match(/{/g);
if (
!defined(bracketMatch) ||
(bracketMatch.length === 1 && /{s}/.test(url))
) {
resource.setQueryParameters(defaultParameters);
this._useKvp = true;
} else {
const templateValues = {
style: style,
Style: style,
TileMatrixSet: tileMatrixSetID,
};
resource.setTemplateValues(templateValues);
this._useKvp = false;
}
this._resource = resource;
this._layer = options.layer;
this._style = style;
this._tileMatrixSetID = tileMatrixSetID;
this._tileMatrixLabels = options.tileMatrixLabels;
this._format = options.format ?? "image/jpeg";
this._tileDiscardPolicy = options.tileDiscardPolicy;
this._tilingScheme = defined(options.tilingScheme)
? options.tilingScheme
: new WebMercatorTilingScheme({ ellipsoid: options.ellipsoid });
this._tileWidth = options.tileWidth ?? 256;
this._tileHeight = options.tileHeight ?? 256;
this._minimumLevel = options.minimumLevel ?? 0;
this._maximumLevel = options.maximumLevel;
this._rectangle = options.rectangle ?? this._tilingScheme.rectangle;
this._dimensions = options.dimensions;
const that = this;
this._reload = undefined;
if (defined(options.times)) {
this._timeDynamicImagery = new TimeDynamicImagery({
clock: options.clock,
times: options.times,
requestImageFunction: function (x, y, level, request, interval) {
return requestImage(that, x, y, level, request, interval);
},
reloadFunction: function () {
if (defined(that._reload)) {
that._reload();
}
},
});
}
this._errorEvent = new Event();
const credit = options.credit;
this._credit = typeof credit === "string" ? new Credit(credit) : credit;
this._subdomains = options.subdomains;
if (Array.isArray(this._subdomains)) {
this._subdomains = this._subdomains.slice();
} else if (defined(this._subdomains) && this._subdomains.length > 0) {
this._subdomains = this._subdomains.split("");
} else {
this._subdomains = ["a", "b", "c"];
}
}
function requestImage(imageryProvider, col, row, level, request, interval) {
const labels = imageryProvider._tileMatrixLabels;
const tileMatrix = defined(labels) ? labels[level] : level.toString();
const subdomains = imageryProvider._subdomains;
const staticDimensions = imageryProvider._dimensions;
const dynamicIntervalData = defined(interval) ? interval.data : undefined;
let resource;
let templateValues;
if (!imageryProvider._useKvp) {
templateValues = {
TileMatrix: tileMatrix,
TileRow: row.toString(),
TileCol: col.toString(),
s: subdomains[(col + row + level) % subdomains.length],
};
resource = imageryProvider._resource.getDerivedResource({
request: request,
});
resource.setTemplateValues(templateValues);
if (defined(staticDimensions)) {
resource.setTemplateValues(staticDimensions);
}
if (defined(dynamicIntervalData)) {
resource.setTemplateValues(dynamicIntervalData);
}
} else {
// build KVP request
let query = {};
query.tilematrix = tileMatrix;
query.layer = imageryProvider._layer;
query.style = imageryProvider._style;
query.tilerow = row;
query.tilecol = col;
query.tilematrixset = imageryProvider._tileMatrixSetID;
query.format = imageryProvider._format;
if (defined(staticDimensions)) {
query = combine(query, staticDimensions);
}
Iif (defined(dynamicIntervalData)) {
query = combine(query, dynamicIntervalData);
}
templateValues = {
s: subdomains[(col + row + level) % subdomains.length],
};
resource = imageryProvider._resource.getDerivedResource({
queryParameters: query,
request: request,
});
resource.setTemplateValues(templateValues);
}
return ImageryProvider.loadImage(imageryProvider, resource);
}
Object.defineProperties(WebMapTileServiceImageryProvider.prototype, {
/**
* Gets the URL of the service hosting the imagery.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {string}
* @readonly
*/
url: {
get: function () {
return this._resource.url;
},
},
/**
* Gets the proxy used by this provider.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {Proxy}
* @readonly
*/
proxy: {
get: function () {
return this._resource.proxy;
},
},
/**
* Gets the width of each tile, in pixels.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {number}
* @readonly
*/
tileWidth: {
get: function () {
return this._tileWidth;
},
},
/**
* Gets the height of each tile, in pixels.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {number}
* @readonly
*/
tileHeight: {
get: function () {
return this._tileHeight;
},
},
/**
* Gets the maximum level-of-detail that can be requested.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {number|undefined}
* @readonly
*/
maximumLevel: {
get: function () {
return this._maximumLevel;
},
},
/**
* Gets the minimum level-of-detail that can be requested.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {number}
* @readonly
*/
minimumLevel: {
get: function () {
return this._minimumLevel;
},
},
/**
* Gets the tiling scheme used by this provider.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {TilingScheme}
* @readonly
*/
tilingScheme: {
get: function () {
return this._tilingScheme;
},
},
/**
* Gets the rectangle, in radians, of the imagery provided by this instance.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {Rectangle}
* @readonly
*/
rectangle: {
get: function () {
return this._rectangle;
},
},
/**
* Gets the tile discard policy. If not undefined, the discard policy is responsible
* for filtering out "missing" tiles via its shouldDiscardImage function. If this function
* returns undefined, no tiles are filtered.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {TileDiscardPolicy}
* @readonly
*/
tileDiscardPolicy: {
get: function () {
return this._tileDiscardPolicy;
},
},
/**
* Gets an event that is raised when the imagery provider encounters an asynchronous error. By subscribing
* to the event, you will be notified of the error and can potentially recover from it. Event listeners
* are passed an instance of {@link TileProviderError}.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {Event}
* @readonly
*/
errorEvent: {
get: function () {
return this._errorEvent;
},
},
/**
* Gets the mime type of images returned by this imagery provider.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {string}
* @readonly
*/
format: {
get: function () {
return this._format;
},
},
/**
* Gets the credit to display when this imagery provider is active. Typically this is used to credit
* the source of the imagery.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {Credit}
* @readonly
*/
credit: {
get: function () {
return this._credit;
},
},
/**
* Gets a value indicating whether or not the images provided by this imagery provider
* include an alpha channel. If this property is false, an alpha channel, if present, will
* be ignored. If this property is true, any images without an alpha channel will be treated
* as if their alpha is 1.0 everywhere. When this property is false, memory usage
* and texture upload time are reduced.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {boolean}
* @readonly
*/
hasAlphaChannel: {
get: function () {
return true;
},
},
/**
* Gets or sets a clock that is used to get keep the time used for time dynamic parameters.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {Clock}
*/
clock: {
get: function () {
return this._timeDynamicImagery.clock;
},
set: function (value) {
this._timeDynamicImagery.clock = value;
},
},
/**
* Gets or sets a time interval collection that is used to get time dynamic parameters. The data of each
* TimeInterval is an object containing the keys and values of the properties that are used during
* tile requests.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {TimeIntervalCollection}
*/
times: {
get: function () {
return this._timeDynamicImagery.times;
},
set: function (value) {
this._timeDynamicImagery.times = value;
},
},
/**
* Gets or sets an object that contains static dimensions and their values.
* @memberof WebMapTileServiceImageryProvider.prototype
* @type {object}
*/
dimensions: {
get: function () {
return this._dimensions;
},
set: function (value) {
Eif (this._dimensions !== value) {
this._dimensions = value;
Eif (defined(this._reload)) {
this._reload();
}
}
},
},
});
/**
* Gets the credits to be displayed when a given tile is displayed.
*
* @param {number} x The tile X coordinate.
* @param {number} y The tile Y coordinate.
* @param {number} level The tile level;
* @returns {Credit[]} The credits to be displayed when the tile is displayed.
*/
WebMapTileServiceImageryProvider.prototype.getTileCredits = function (
x,
y,
level,
) {
return undefined;
};
/**
* Requests the image for a given tile.
*
* @param {number} x The tile X coordinate.
* @param {number} y The tile Y coordinate.
* @param {number} level The tile level.
* @param {Request} [request] The request object. Intended for internal use only.
* @returns {Promise<ImageryTypes>|undefined} A promise for the image that will resolve when the image is available, or
* undefined if there are too many active requests to the server, and the request should be retried later.
*/
WebMapTileServiceImageryProvider.prototype.requestImage = function (
x,
y,
level,
request,
) {
let result;
const timeDynamicImagery = this._timeDynamicImagery;
let currentInterval;
// Try and load from cache
if (defined(timeDynamicImagery)) {
currentInterval = timeDynamicImagery.currentInterval;
result = timeDynamicImagery.getFromCache(x, y, level, request);
}
// Couldn't load from cache
if (!defined(result)) {
result = requestImage(this, x, y, level, request, currentInterval);
}
// If we are approaching an interval, preload this tile in the next interval
if (defined(result) && defined(timeDynamicImagery)) {
timeDynamicImagery.checkApproachingInterval(x, y, level, request);
}
return result;
};
/**
* Picking features is not currently supported by this imagery provider, so this function simply returns
* undefined.
*
* @param {number} x The tile X coordinate.
* @param {number} y The tile Y coordinate.
* @param {number} level The tile level.
* @param {number} longitude The longitude at which to pick features.
* @param {number} latitude The latitude at which to pick features.
* @return {undefined} Undefined since picking is not supported.
*/
WebMapTileServiceImageryProvider.prototype.pickFeatures = function (
x,
y,
level,
longitude,
latitude,
) {
return undefined;
};
export default WebMapTileServiceImageryProvider;
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