# WebMapTileServiceImageryProvider

#### new Cesium.WebMapTileServiceImageryProvider(options)
engine/Source/Scene/WebMapTileServiceImageryProvider.js 116

Provides tiled imagery served by WMTS 1.0.0 compliant servers. This provider supports HTTP KVP-encoded and RESTful GetTile requests, but does not yet support the SOAP encoding.

Name | Type | Description
--- | --- | ---
`options` | WebMapTileServiceImageryProvider.ConstructorOptions | Object describing initialization options

##### Examples:

    // Example 1. USGS shaded relief tiles (KVP)
    const shadedRelief1 = new Cesium.WebMapTileServiceImageryProvider({
        url : 'http://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 2. USGS shaded relief tiles (RESTful)
    const shadedRelief2 = new Cesium.WebMapTileServiceImageryProvider({
        url : 'http://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 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);

##### Demo:

- Cesium Sandcastle Web Map Tile Service with Time Demo

##### See:

- ArcGisMapServerImageryProvider
- BingMapsImageryProvider
- GoogleEarthEnterpriseMapsProvider
- OpenStreetMapImageryProvider
- SingleTileImageryProvider
- TileMapServiceImageryProvider
- WebMapServiceImageryProvider
- UrlTemplateImageryProvider

### Members

#### clock : Clock
engine/Source/Scene/WebMapTileServiceImageryProvider.js 588

Gets or sets a clock that is used to get keep the time used for time dynamic parameters.

#### readonly credit : Credit
engine/Source/Scene/WebMapTileServiceImageryProvider.js 562

Gets the credit to display when this imagery provider is active. Typically this is used to credit the source of the imagery. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### defaultAlpha : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 146

The default alpha blending value of this provider, with 0.0 representing fully transparent and 1.0 representing fully opaque.

Default Value: `undefined`

#### defaultBrightness : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 173

The default brightness of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 makes the imagery darker while greater than 1.0 makes it brighter.

Default Value: `undefined`

#### defaultContrast : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 182

The default contrast of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces the contrast while greater than 1.0 increases it.

Default Value: `undefined`

#### defaultDayAlpha : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 164

The default alpha blending value on the day side of the globe of this provider, with 0.0 representing fully transparent and 1.0 representing fully opaque.

Default Value: `undefined`

#### defaultGamma : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 207

The default gamma correction to apply to this provider. 1.0 uses the unmodified imagery color.

Default Value: `undefined`

#### defaultHue : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 190

The default hue of this provider in radians. 0.0 uses the unmodified imagery color.

Default Value: `undefined`

#### defaultMagnificationFilter : TextureMagnificationFilter
engine/Source/Scene/WebMapTileServiceImageryProvider.js 223

The default texture magnification filter to apply to this provider.

Default Value: `undefined`

#### defaultMinificationFilter : TextureMinificationFilter
engine/Source/Scene/WebMapTileServiceImageryProvider.js 215

The default texture minification filter to apply to this provider.

Default Value: `undefined`

#### defaultNightAlpha : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 155

The default alpha blending value on the night side of the globe of this provider, with 0.0 representing fully transparent and 1.0 representing fully opaque.

Default Value: `undefined`

#### defaultSaturation : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 199

The default saturation of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces the saturation while greater than 1.0 increases it.

Default Value: `undefined`

#### dimensions : object
engine/Source/Scene/WebMapTileServiceImageryProvider.js 616

Gets or sets an object that contains static dimensions and their values.

#### readonly errorEvent : Event
engine/Source/Scene/WebMapTileServiceImageryProvider.js 515

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 `TileProviderError`.

#### readonly format : string
engine/Source/Scene/WebMapTileServiceImageryProvider.js 527

Gets the mime type of images returned by this imagery provider.

#### readonly hasAlphaChannel : boolean
engine/Source/Scene/WebMapTileServiceImageryProvider.js 578

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.

#### readonly maximumLevel : number|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 447

Gets the maximum level-of-detail that can be requested. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly minimumLevel : number
engine/Source/Scene/WebMapTileServiceImageryProvider.js 460

Gets the minimum level-of-detail that can be requested. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly proxy : Proxy
engine/Source/Scene/WebMapTileServiceImageryProvider.js 408

Gets the proxy used by this provider.

#### readonly ready : boolean
engine/Source/Scene/WebMapTileServiceImageryProvider.js 539

Gets a value indicating whether or not the provider is ready for use.

#### readonly readyPromise : Promise.<boolean>
engine/Source/Scene/WebMapTileServiceImageryProvider.js 549

Gets a promise that resolves to true when the provider is ready for use.

#### readonly rectangle : Rectangle
engine/Source/Scene/WebMapTileServiceImageryProvider.js 486

Gets the rectangle, in radians, of the imagery provided by this instance. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly tileDiscardPolicy : TileDiscardPolicy
engine/Source/Scene/WebMapTileServiceImageryProvider.js 501

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. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly tileHeight : number
engine/Source/Scene/WebMapTileServiceImageryProvider.js 434

Gets the height of each tile, in pixels. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly tileWidth : number
engine/Source/Scene/WebMapTileServiceImageryProvider.js 421

Gets the width of each tile, in pixels. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### readonly tilingScheme : TilingScheme
engine/Source/Scene/WebMapTileServiceImageryProvider.js 473

Gets the tiling scheme used by this provider. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

#### times : TimeIntervalCollection
engine/Source/Scene/WebMapTileServiceImageryProvider.js 603

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.

#### readonly url : string
engine/Source/Scene/WebMapTileServiceImageryProvider.js 396

Gets the URL of the service hosting the imagery.

### Methods

#### getTileCredits(x, y, level) → Array.<Credit>
engine/Source/Scene/WebMapTileServiceImageryProvider.js 641

Gets the credits to be displayed when a given tile is displayed.

Name | Type | Description
--- | --- | ---
`x` | number | The tile X coordinate.
`y` | number | The tile Y coordinate.
`level` | number | The tile level;

##### Returns:

The credits to be displayed when the tile is displayed.

##### Throws:

- DeveloperError : `getTileCredits` must not be called before the imagery provider is ready.

#### pickFeatures(x, y, level, longitude, latitude) → undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 702

Picking features is not currently supported by this imagery provider, so this function simply returns undefined.

Name | Type | Description
--- | --- | ---
`x` | number | The tile X coordinate.
`y` | number | The tile Y coordinate.
`level` | number | The tile level.
`longitude` | number | The longitude at which to pick features.
`latitude` | number | The latitude at which to pick features.

##### Returns:

Undefined since picking is not supported.

#### requestImage(x, y, level, request) → Promise.<ImageryTypes>|undefined
engine/Source/Scene/WebMapTileServiceImageryProvider.js 662

Requests the image for a given tile. This function should not be called before `WebMapTileServiceImageryProvider#ready` returns true.

Name | Type | Description
--- | --- | ---
`x` | number | The tile X coordinate.
`y` | number | The tile Y coordinate.
`level` | number | The tile level.
`request` | Request | optional The request object. Intended for internal use only.

##### Returns:

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.

##### Throws:

- DeveloperError : `requestImage` must not be called before the imagery provider is ready.

### Type Definitions

#### Cesium.WebMapTileServiceImageryProvider.ConstructorOptions
engine/Source/Scene/WebMapTileServiceImageryProvider.js 19

Initialization options for the WebMapTileServiceImageryProvider constructor

##### Properties:

Name | Type | Attributes | Default | Description
--- | --- | --- | --- | ---
`url` | Resource | string |  |  | 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.
`format` | string | <optional> | 'image/jpeg' | The MIME type for images to retrieve from the server.
`layer` | string |  |  | The layer name for WMTS requests.
`style` | string |  |  | The style name for WMTS requests.
`tileMatrixSetID` | string |  |  | The identifier of the TileMatrixSet to use for WMTS requests.
`tileMatrixLabels` | Array | <optional> |  | A list of identifiers in the TileMatrix to use for WMTS requests, one per TileMatrix level.
`clock` | Clock | <optional> |  | A Clock instance that is used when determining the value for the time dimension. Required when `times` is specified.
`times` | TimeIntervalCollection | <optional> |  | TimeIntervalCollection with its `data` property being an object containing time dynamic dimension and their values.
`dimensions` | object | <optional> |  | A object containing static dimensions and their values.
`tileWidth` | number | <optional> | 256 | The tile width in pixels.
`tileHeight` | number | <optional> | 256 | The tile height in pixels.
`tilingScheme` | TilingScheme | <optional> |  | The tiling scheme corresponding to the organization of the tiles in the TileMatrixSet.
`rectangle` | Rectangle | <optional> | Rectangle.MAX_VALUE | The rectangle covered by the layer.
`minimumLevel` | number | <optional> | 0 | The minimum level-of-detail supported by the imagery provider.
`maximumLevel` | number | <optional> |  | The maximum level-of-detail supported by the imagery provider, or undefined if there is no limit.
`ellipsoid` | Ellipsoid | <optional> |  | The ellipsoid. If not specified, the WGS84 ellipsoid is used.
`credit` | Credit | string | <optional> |  | A credit for the data source, which is displayed on the canvas.
`subdomains` | string | Array.<string> | <optional> | 'abc' | The subdomains to use for the `{s}` 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.

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