# Azure2DImageryProvider

#### new Cesium.Azure2DImageryProvider(options)
engine/Source/Scene/Azure2DImageryProvider.js 41

Provides 2D image tiles from Azure.

Name | Type | Description
--- | --- | ---
`options` | Azure2DImageryProvider.ConstructorOptions | Object describing initialization options

##### Example:

    // Azure 2D imagery provider
    const azureImageryProvider = new Cesium.Azure2DImageryProvider({
        subscriptionKey: "subscription-key",
        tilesetId: "microsoft.base.road"
    });

### Members

#### readonly credit : Credit
engine/Source/Scene/Azure2DImageryProvider.js 228

Gets the credit to display when this imagery provider is active. Typically this is used to credit the source of the imagery.

#### readonly errorEvent : Event
engine/Source/Scene/Azure2DImageryProvider.js 215

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/Azure2DImageryProvider.js 256

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/Azure2DImageryProvider.js 159

Gets the maximum level-of-detail that can be requested.

#### readonly minimumLevel : number
engine/Source/Scene/Azure2DImageryProvider.js 175

Gets the minimum level-of-detail that can be requested. Generally, a minimum level should only be used when the rectangle of the imagery is small enough that the number of tiles at the minimum level is small. An imagery provider with more than a few tiles at the minimum level will lead to rendering problems.

#### readonly proxy : Proxy
engine/Source/Scene/Azure2DImageryProvider.js 240

Gets the proxy used by this provider.

#### readonly rectangle : Rectangle
engine/Source/Scene/Azure2DImageryProvider.js 123

Gets the rectangle, in radians, of the imagery provided by the instance.

#### readonly tileDiscardPolicy : TileDiscardPolicy
engine/Source/Scene/Azure2DImageryProvider.js 201

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.

#### readonly tileHeight : number
engine/Source/Scene/Azure2DImageryProvider.js 147

Gets the height of each tile, in pixels.

#### readonly tileWidth : number
engine/Source/Scene/Azure2DImageryProvider.js 135

Gets the width of each tile, in pixels.

#### readonly tilingScheme : TilingScheme
engine/Source/Scene/Azure2DImageryProvider.js 187

Gets the tiling scheme used by the provider.

#### readonly url : string
engine/Source/Scene/Azure2DImageryProvider.js 111

Gets the URL of the Azure 2D Imagery server.

### Methods

#### getTileCredits(x, y, level) → Array.<Credit>|undefined
engine/Source/Scene/Azure2DImageryProvider.js 271

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.

#### pickFeatures(x, y, level, longitude, latitude) → undefined
engine/Source/Scene/Azure2DImageryProvider.js 330

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/Azure2DImageryProvider.js 296

Requests the image for a given tile.

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.

### Type Definitions

#### Cesium.Azure2DImageryProvider.ConstructorOptions
engine/Source/Scene/Azure2DImageryProvider.js 11

Initialization options for the Azure2DImageryProvider constructor

##### Properties:

Name | Type | Attributes | Default | Description
--- | --- | --- | --- | ---
`subscriptionKey` | string |  |  | The public subscription key for the imagery.
`url` | string | <optional> | "https://atlas.microsoft.com/" | The Azure server url.
`tilesetId` | string | <optional> | "microsoft.imagery" | The Azure tileset ID. Valid options are `microsoft.imagery`, `microsoft.base.road`, and `microsoft.base.labels.road`
`ellipsoid` | Ellipsoid | <optional> | Ellipsoid.default | The ellipsoid. If not specified, the default ellipsoid is used.
`minimumLevel` | number | <optional> | 0 | The minimum level-of-detail supported by the imagery provider. Take care when specifying this that the number of tiles at the minimum level is small, such as four or less. A larger number is likely to result in rendering problems.
`maximumLevel` | number | <optional> | 22 | The maximum level-of-detail supported by the imagery provider.
`rectangle` | Rectangle | <optional> | Rectangle.MAX_VALUE | The rectangle, in radians, covered by the image.

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