# GoogleEarthEnterpriseImageryProvider

#### new Cesium.GoogleEarthEnterpriseImageryProvider(options)
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 89

Provides tiled imagery using the Google Earth Enterprise REST API. Notes: This provider is for use with the 3D Earth API of Google Earth Enterprise, `GoogleEarthEnterpriseMapsProvider` should be used with 2D Maps API.

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

##### Example:

    const geeMetadata = new GoogleEarthEnterpriseMetadata('http://www.example.com');
    const gee = new Cesium.GoogleEarthEnterpriseImageryProvider({
        metadata : geeMetadata
    });

##### See:

- GoogleEarthEnterpriseTerrainProvider
- ArcGisMapServerImageryProvider
- GoogleEarthEnterpriseMapsProvider
- OpenStreetMapImageryProvider
- SingleTileImageryProvider
- TileMapServiceImageryProvider
- WebMapServiceImageryProvider
- WebMapTileServiceImageryProvider
- UrlTemplateImageryProvider
- Cross-Origin Resource Sharing

### Members

#### readonly credit : Credit
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 483

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 `GoogleEarthEnterpriseImageryProvider#ready` returns true.

#### defaultAlpha : number|undefined
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 105

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/GoogleEarthEnterpriseImageryProvider.js 132

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/GoogleEarthEnterpriseImageryProvider.js 141

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/GoogleEarthEnterpriseImageryProvider.js 123

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/GoogleEarthEnterpriseImageryProvider.js 166

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/GoogleEarthEnterpriseImageryProvider.js 149

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

Default Value: `undefined`

#### defaultMagnificationFilter : TextureMagnificationFilter
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 182

The default texture magnification filter to apply to this provider.

Default Value: `undefined`

#### defaultMinificationFilter : TextureMinificationFilter
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 174

The default texture minification filter to apply to this provider.

Default Value: `undefined`

#### defaultNightAlpha : number|undefined
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 114

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/GoogleEarthEnterpriseImageryProvider.js 158

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`

#### readonly errorEvent : Event
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 446

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 hasAlphaChannel : boolean
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 499

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. Setting this property to false reduces memory usage and texture upload time.

#### readonly maximumLevel : number|undefined
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 338

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

#### readonly minimumLevel : number
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 359

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

#### readonly proxy : Proxy
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 283

Gets the proxy used by this provider.

#### readonly ready : boolean
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 458

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

#### readonly readyPromise : Promise.<boolean>
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 470

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

#### readonly rectangle : Rectangle
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 401

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

#### readonly tileDiscardPolicy : TileDiscardPolicy
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 424

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 `GoogleEarthEnterpriseImageryProvider#ready` returns true.

#### readonly tileHeight : number
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 317

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

#### readonly tileWidth : number
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 296

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

#### readonly tilingScheme : TilingScheme
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 380

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

#### readonly url : string
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 271

Gets the name of the Google Earth Enterprise server url hosting the imagery.

### Methods

#### getTileCredits(x, y, level) → Array.<Credit>
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 516

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/GoogleEarthEnterpriseImageryProvider.js 641

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/GoogleEarthEnterpriseImageryProvider.js 554

Requests the image for a given tile. This function should not be called before `GoogleEarthEnterpriseImageryProvider#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.GoogleEarthEnterpriseImageryProvider.ConstructorOptions
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 45

Initialization options for the GoogleEarthEnterpriseImageryProvider constructor

##### Properties:

Name | Type | Attributes | Description
--- | --- | --- | ---
`url` | Resource | string |  | The url of the Google Earth Enterprise server hosting the imagery.
`metadata` | GoogleEarthEnterpriseMetadata |  | A metadata object that can be used to share metadata requests with a GoogleEarthEnterpriseTerrainProvider.
`ellipsoid` | Ellipsoid | <optional> | The ellipsoid. If not specified, the WGS84 ellipsoid is used.
`tileDiscardPolicy` | TileDiscardPolicy | <optional> | The policy that determines if a tile is invalid and should be discarded. If this value is not specified, a default is to discard tiles that fail to download.
`credit` | Credit | string | <optional> | A credit for the data source, which is displayed on the canvas.

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