KBE3D / KBCore / Cesium / GoogleEarthEnterpriseMapsProvider

类: GoogleEarthEnterpriseMapsProvider

<div class="notice"> To construct a GoogleEarthEnterpriseMapsProvider, call GoogleEarthEnterpriseImageryProvider.fromUrl. Do not call the constructor directly. </div>

Provides tiled imagery using the Google Earth Imagery API.

Notes: This imagery provider does not work with the public Google Earth servers. It works with the Google Earth Enterprise Server.

   By default the Google Earth Enterprise server does not set the
   [Cross-Origin Resource Sharing](http://www.w3.org/TR/cors/) headers. You can either
   use a proxy server which adds these headers, or in the /opt/google/gehttpd/conf/gehttpd.conf
   and add the 'Header set Access-Control-Allow-Origin "*"' option to the '<Directory />' and
   '<Directory "/opt/google/gehttpd/htdocs">' directives.

   This provider is for use with 2D Maps API as part of Google Earth Enterprise. For 3D Earth API uses, it
   is necessary to use [GoogleEarthEnterpriseImageryProvider](GoogleEarthEnterpriseImageryProvider.md)

示例

const google = await Cesium.GoogleEarthEnterpriseMapsProvider.fromUrl("https://earth.localdomain", 1008);

参数

Object describing initialization options

属性

logoUrl

static logoUrl: string

Gets or sets the URL to the Google Earth logo for display in the credit.

---

url

readonly url: string

Gets the URL of the Google Earth MapServer.

---

path

readonly path: string

Gets the url path of the data on the Google Earth server.

---

proxy

readonly proxy: Proxy

Gets the proxy used by this provider.

---

channel

readonly channel: number

Gets the imagery channel (id) currently being used.

---

tileWidth

readonly tileWidth: number

Gets the width of each tile, in pixels.

---

tileHeight

readonly tileHeight: number

Gets the height of each tile, in pixels.

---

maximumLevel

readonly maximumLevel: number | undefined

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

---

minimumLevel

readonly minimumLevel: number

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

---

tilingScheme

readonly tilingScheme: TilingScheme

Gets the tiling scheme used by this provider.

---

version

readonly version: number

Gets the version of the data used by this provider.

---

requestType

readonly requestType: string

Gets the type of data that is being requested from the provider.

---

rectangle

readonly rectangle: Rectangle

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

---

tileDiscardPolicy

readonly tileDiscardPolicy: TileDiscardPolicy

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.

---

errorEvent

readonly errorEvent: Event

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.

---

credit

readonly credit: Credit

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

---

hasAlphaChannel

readonly hasAlphaChannel: boolean

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.

方法

fromUrl()

static fromUrl(url: string | Resource, options?: ConstructorOptions): Promise<GoogleEarthEnterpriseMapsProvider>

Creates a tiled imagery provider using the Google Earth Imagery API.

参数

url

The url of the Google Earth server hosting the imagery.

string | Resource

options?

ConstructorOptions

Object describing initialization options

返回

Promise<GoogleEarthEnterpriseMapsProvider>

The created GoogleEarthEnterpriseMapsProvider.

示例

const google = await Cesium.GoogleEarthEnterpriseMapsProvider.fromUrl("https://earth.localdomain", 1008);

---

getTileCredits()

getTileCredits(x: number, y: number, level: number): Credit[]

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

参数

x

number

The tile X coordinate.

y

number

The tile Y coordinate.

level

number

The tile level;

返回

Credit[]

The credits to be displayed when the tile is displayed.

---

requestImage()

requestImage(x: number, y: number, level: number, request?: Request): Promise<ImageryTypes> | undefined

Requests the image for a given tile.

参数

x

number

The tile X coordinate.

y

number

The tile Y coordinate.

level

number

The tile level.

request?

Request

The request object. Intended for internal use only.

返回

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.

---

pickFeatures()

pickFeatures(x: number, y: number, level: number, longitude: number, latitude: number): undefined

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

参数

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.

返回

undefined

Undefined since picking is not supported.

构造函数

构造函数

new GoogleEarthEnterpriseMapsProvider(options: ConstructorOptions): GoogleEarthEnterpriseMapsProvider

参数

options

ConstructorOptions

返回

GoogleEarthEnterpriseMapsProvider