百度地图影像服务
| Name | Type | Description | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
options |
Object |
|
Example:
viewer.imageryLayers.addImageryProvider(new Cesium.BaiduImageryProvider());
viewer.imageryLayers.addImageryProvider(new Cesium.BaiduImageryProvider({
type : this.type,
customId : this.customId,
bigFont : this.bigFont,
time : Date.now(),
toWGS84 : true
}))Members
static Cesium.BaiduImageryProvider.CustomId : Readonly.<{bluish: string, midnight: string, redalert: string, pink: string, light: string, darkgreen: string, dark: string, googlelite: string, grayscale: string, grassgreen: string}>
百度官方提供的各种自定义风格地图
static Cesium.BaiduImageryProvider.Type : Readonly.<{onlineLabel: string, custom: string, tile: string, sate: string, traffic: string}>
百度地图类型
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
BaiduImageryProvider#ready returns true.
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.
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.
Gets the maximum level-of-detail that can be requested. This function should
not be called before
BaiduImageryProvider#ready returns true.
Gets the minimum level-of-detail that can be requested. This function should
not be called before
BaiduImageryProvider#ready returns true.
Gets the proxy used by this provider.
Gets a value indicating whether or not the provider is ready for use.
readonly rectangle : Rectangle
Gets the rectangle, in radians, of the imagery provided by this instance. This function should
not be called before
BaiduImageryProvider#ready returns true.
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
BaiduImageryProvider#ready returns true.
Gets the height of each tile, in pixels. This function should
not be called before
BaiduImageryProvider#ready returns true.
Gets the width of each tile, in pixels. This function should
not be called before
BaiduImageryProvider#ready returns true.
readonly tilingScheme : TilingScheme
Gets the tiling scheme used by this provider. This function should
not be called before
BaiduImageryProvider#ready returns true.
Gets the URL of the single, top-level imagery tile.
Methods
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.
不支持拾取操作
| 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:
picking is not supported.
Requests the image for a given tile. This function should
not be called before
BaiduImageryProvider#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. The resolved image may be either an
Image or a Canvas DOM object.
Throws:
-
DeveloperError :
requestImagemust not be called before the imagery provider is ready.