Provides tiled imagery hosted by an ArcGIS MapServer. By default, the server's pre-cached tiles are
used, if available.
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options |
Object |
Object with the following properties:
|
Example:
var esri = new Cesium.ArcGisMapServerImageryProvider({
url : 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer'
});
See:
Members
readonlycredit : Credit
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
ArcGisMapServerImageryProvider#ready
returns true.
Gets or sets a value indicating whether feature picking is enabled. If true,
ArcGisMapServerImageryProvider#pickFeatures
will
invoke the "identify" operation on the ArcGIS server and return the features included in the response. If false,
ArcGisMapServerImageryProvider#pickFeatures
will immediately return undefined (indicating no pickable features)
without communicating with the server.
-
Default Value:
true
readonlyerrorEvent : 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.
-
Default Value:
true
Gets the comma-separated list of layer IDs to show.
Gets the maximum level-of-detail that can be requested. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
Gets the minimum level-of-detail that can be requested. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
Gets the proxy used by this provider.
Gets a value indicating whether or not the provider is ready for use.
Gets a promise that resolves to true when the provider is ready for use.
readonlyrectangle : Rectangle
Gets the rectangle, in radians, of the imagery provided by this instance. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
readonlytileDiscardPolicy : 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. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
Gets the height of each tile, in pixels. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
Gets the width of each tile, in pixels. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
readonlytilingScheme : TilingScheme
Gets the tiling scheme used by this provider. This function should
not be called before
ArcGisMapServerImageryProvider#ready
returns true.
Gets the ArcGIS token used to authenticate with the ArcGis MapServer service.
Gets the URL of the ArcGIS MapServer.
Gets a value indicating whether this imagery provider is using pre-cached tiles from the
ArcGIS MapServer. If the imagery provider is not yet ready (
ArcGisMapServerImageryProvider#ready
), this function
will return the value of `options.usePreCachedTilesIfAvailable`, even if the MapServer does
not have pre-cached tiles.
-
Default Value:
true
Methods
getTileCredits(x, y, level) → Array.<Credit>
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) → Promise.<Array.<ImageryLayerFeatureInfo>>|undefined
/**
Asynchronously determines what features, if any, are located at a given longitude and latitude within
a tile. This function should not be called before
ImageryProvider#ready
returns true.
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:
A promise for the picked features that will resolve when the asynchronous
picking completes. The resolved value is an array of
ImageryLayerFeatureInfo
instances. The array may be empty if no features are found at the given location.
Throws:
-
DeveloperError :
pickFeatures
must not be called before the imagery provider is ready.
Requests the image for a given tile. This function should
not be called before
ArcGisMapServerImageryProvider#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 :
requestImage
must not be called before the imagery provider is ready.