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GoogleEarthEnterpriseImageryProvider

new Cesium.GoogleEarthEnterpriseImageryProvider(options)
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 88

要构造 GoogleEarthEnterpriseImageryProvider，请调用 To construct a GoogleEarthEnterpriseImageryProvider, call GoogleEarthEnterpriseImageryProvider.fromMetadata。不要直接调用构造函数。 . Do not call the constructor directly.
使用 Google Earth Enterprise REST API 提供平铺图像。注意：此提供程序适用于 Google 地球企业版的 3D 地球 API， 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 应与 2D 地图 API 一起使用。 should be used with 2D Maps API.
名称 Name 类型 Type 说明 Description
options GoogleEarthEnterpriseImageryProvider.ConstructorOptions 可选 optional 描述初始化选项的对象 Object describing initialization options
示例： Example:
const geeMetadata = await GoogleEarthEnterpriseMetadata.fromUrl("http://www.example.com");
const gee = Cesium.GoogleEarthEnterpriseImageryProvider.fromMetadata(geeMetadata);
另见： See:

成员 Members

readonly credit : Credit
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 265

获取此图像提供程序处于活动状态时要显示的信用。通常，这用于证明图像的来源。 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/GoogleEarthEnterpriseImageryProvider.js 252

获取当图像提供程序遇到异步错误时引发的事件。通过订阅该事件，您将收到错误通知，并有可能从中恢复。事件监听器传递一个实例 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 281

获取一个值，该值指示此图像提供程序提供的图像是否包含 Alpha 通道。如果此属性为 false，则 Alpha 通道（如果存在）将被忽略。如果此属性为 true，则任何没有 Alpha 通道的图像都将被视为其 Alpha 在任何地方都是 1.0。将此属性设置为 false 可减少内存使用量和纹理上传时间。 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 188

获取可以请求的最大详细程度。 Gets the maximum level-of-detail that can be requested.

readonly minimumLevel : number
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 200

获取可以请求的最低详细程度。 Gets the minimum level-of-detail that can be requested.

readonly proxy : Proxy
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 152

获取此提供者使用的代理。 Gets the proxy used by this provider.

readonly rectangle : Rectangle
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 224

获取此实例提供的图像的矩形（以弧度为单位）。 Gets the rectangle, in radians, of the imagery provided by this instance.

readonly tileDiscardPolicy : TileDiscardPolicy
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 238

获取图块丢弃策略。如果未定义，则丢弃策略负责通过其 shouldDiscardImage 函数过滤掉“丢失”的图块。如果此函数返回未定义，则不会过滤任何图块。 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/GoogleEarthEnterpriseImageryProvider.js 176

获取每个图块的高度（以像素为单位）。 Gets the height of each tile, in pixels.

readonly tileWidth : number
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 164

获取每个图块的宽度（以像素为单位）。 Gets the width of each tile, in pixels.

readonly tilingScheme : TilingScheme
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 212

获取此提供程序使用的切片方案。 Gets the tiling scheme used by this provider.

readonly url : string
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 140

获取托管图像的 Google 地球企业版服务器 URL 的名称。 Gets the name of the Google Earth Enterprise server url hosting the imagery.

方法 Methods

static Cesium.GoogleEarthEnterpriseImageryProvider.fromMetadata(metadata, options) → GoogleEarthEnterpriseImageryProvider
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 300

使用 Google Earth Enterprise REST API 创建平铺图像提供程序。 Creates a tiled imagery provider using the Google Earth Enterprise REST API.
名称 Name 类型 Type 说明 Description
metadata GoogleEarthEnterpriseMetadata 可用于与 GoogleEarthEnterpriseTerrainProvider 共享元数据请求的元数据对象。 A metadata object that can be used to share metadata requests with a GoogleEarthEnterpriseTerrainProvider.
options GoogleEarthEnterpriseImageryProvider.ConstructorOptions 描述初始化选项的对象。 Object describing initialization options.
返回： Returns:
抛出： Throws:
示例： Example:
const geeMetadata = await GoogleEarthEnterpriseMetadata.fromUrl("http://www.example.com");
const gee = Cesium.GoogleEarthEnterpriseImageryProvider.fromMetadata(geeMetadata);

getTileCredits(x, y, level) → Array.<Credit>
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 325

获取显示给定图块时要显示的积分。 Gets the credits to be displayed when a given tile is displayed.
名称 Name 类型 Type 说明 Description
x number 平铺 X 坐标。 The tile X coordinate.
y number 平铺 Y 坐标。 The tile Y coordinate.
level number 瓷砖水平； The tile level;
返回： Returns:
显示图块时要显示的制作人员名单。 The credits to be displayed when the tile is displayed.

pickFeatures(x, y, level, longitude, latitude) → undefined
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 431

该图像提供程序当前不支持选取要素，因此该函数仅返回 undefined。 Picking features is not currently supported by this imagery provider, so this function simply returns undefined.
名称 Name 类型 Type 说明 Description
x number 平铺 X 坐标。 The tile X coordinate.
y number 平铺 Y 坐标。 The tile Y coordinate.
level number 瓷砖级别。 The tile level.
longitude number 选择要素的经度。 The longitude at which to pick features.
latitude number 选择特征的纬度。 The latitude at which to pick features.
返回： Returns:
未定义，因为不支持挑选。 Undefined since picking is not supported.

requestImage(x, y, level, request) → Promise.<ImageryTypes>|undefined
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 352

请求给定图块的图像。 Requests the image for a given tile.
名称 Name 类型 Type 说明 Description
x number 平铺 X 坐标。 The tile X coordinate.
y number 平铺 Y 坐标。 The tile Y coordinate.
level number 瓷砖级别。 The tile level.
request Request 可选 optional 请求对象。仅供内部使用。 The request object. Intended for internal use only.
返回： Returns:
对图像的承诺，该承诺将在图像可用时解析，或者如果对服务器的活动请求太多，则未定义，并且应稍后重试该请求。 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.

类型定义 Type Definitions

Cesium.GoogleEarthEnterpriseImageryProvider.ConstructorOptions
engine/Source/Scene/GoogleEarthEnterpriseImageryProvider.js 43

GoogleEarthEnterpriseImageryProvider 构造函数的初始化选项 Initialization options for the GoogleEarthEnterpriseImageryProvider constructor
属性： Properties:
名称 Name 类型 Type Attributes 默认值 Default 说明 Description
ellipsoid Ellipsoid <可选> &lt;optional>
 Ellipsoid.default 椭球体。如果未指定，则使用默认椭球体。 The ellipsoid. If not specified, the default ellipsoid is used.
tileDiscardPolicy TileDiscardPolicy <可选> &lt;optional>
 确定图块是否无效并应被丢弃的策略。如果未指定此值，则默认情况下会丢弃无法下载的图块。 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 <可选> &lt;optional>
 数据源的来源，显示在画布上。 A credit for the data source, which is displayed on the canvas.
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