Provides tiled imagery hosted by an ArcGIS MapServer. By default, the server's pre-cached tiles are
used, if available.
| Name | Type | Description |
|---|---|---|
options |
ArcGisMapServerImageryProvider.ConstructorOptions | Object describing initialization options |
Example:
const esri = new Cesium.ArcGisMapServerImageryProvider({
url : 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer'
});See:
Members
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. This function should not be called before
ArcGisMapServerImageryProvider#ready returns true.
The default alpha blending value of this provider, with 0.0 representing fully transparent and
1.0 representing fully opaque.
-
Default Value:
undefined
The default brightness of this provider. 1.0 uses the unmodified imagery color. Less than 1.0
makes the imagery darker while greater than 1.0 makes it brighter.
-
Default Value:
undefined
The default contrast of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces
the contrast while greater than 1.0 increases it.
-
Default Value:
undefined
The default alpha blending value on the day side of the globe of this provider, with 0.0 representing fully transparent and
1.0 representing fully opaque.
-
Default Value:
undefined
The default gamma correction to apply to this provider. 1.0 uses the unmodified imagery color.
-
Default Value:
undefined
The default hue of this provider in radians. 0.0 uses the unmodified imagery color.
-
Default Value:
undefined
defaultMagnificationFilter : TextureMagnificationFilter
The default texture magnification filter to apply to this provider.
-
Default Value:
undefined
defaultMinificationFilter : TextureMinificationFilter
The default texture minification filter to apply to this provider.
-
Default Value:
undefined
The default alpha blending value on the night side of the globe of this provider, with 0.0 representing fully transparent and
1.0 representing fully opaque.
-
Default Value:
undefined
The default saturation of this provider. 1.0 uses the unmodified imagery color. Less than 1.0 reduces the
saturation while greater than 1.0 increases it.
-
Default Value:
undefined
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
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.
-
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.
readonly proxy : Proxy
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.
readonly rectangle : Rectangle
Gets the rectangle, in radians, of the imagery provided by this instance. This function should
not be called before
ArcGisMapServerImageryProvider#ready returns true.
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. 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.
readonly tilingScheme : 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 :
getTileCreditsmust 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 :
pickFeaturesmust 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 :
requestImagemust not be called before the imagery provider is ready.
Type Definitions
Initialization options for the ArcGisMapServerImageryProvider constructor
Properties:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
url |
Resource | String | The URL of the ArcGIS MapServer service. | ||
token |
String |
<optional> |
The ArcGIS token used to authenticate with the ArcGIS MapServer service. | |
tileDiscardPolicy |
TileDiscardPolicy |
<optional> |
The policy that determines if a tile
is invalid and should be discarded. If this value is not specified, a default
DiscardMissingTileImagePolicy is used for tiled map servers, and a
NeverTileDiscardPolicy is used for non-tiled map servers. In the former case,
we request tile 0,0 at the maximum tile level and check pixels (0,0), (200,20), (20,200),
(80,110), and (160, 130). If all of these pixels are transparent, the discard check is
disabled and no tiles are discarded. If any of them have a non-transparent color, any
tile that has the same values in these pixel locations is discarded. The end result of
these defaults should be correct tile discarding for a standard ArcGIS Server. To ensure
that no tiles are discarded, construct and pass a NeverTileDiscardPolicy for this
parameter. |
|
usePreCachedTilesIfAvailable |
Boolean |
<optional> |
true | If true, the server's pre-cached tiles are used if they are available. If false, any pre-cached tiles are ignored and the 'export' service is used. |
layers |
String |
<optional> |
A comma-separated list of the layers to show, or undefined if all layers should be shown. | |
enablePickFeatures |
Boolean |
<optional> |
true | If true, ArcGisMapServerImageryProvider#pickFeatures will invoke
the Identify service on the MapServer 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. Set this property to false if you don't want this provider's features to
be pickable. Can be overridden by setting the ArcGisMapServerImageryProvider#enablePickFeatures property on the object. |
rectangle |
Rectangle |
<optional> |
Rectangle.MAX_VALUE | The rectangle of the layer. This parameter is ignored when accessing a tiled layer. |
tilingScheme |
TilingScheme |
<optional> |
new GeographicTilingScheme() | The tiling scheme to use to divide the world into tiles. This parameter is ignored when accessing a tiled server. |
ellipsoid |
Ellipsoid |
<optional> |
The ellipsoid. If the tilingScheme is specified and used, this parameter is ignored and the tiling scheme's ellipsoid is used instead. If neither parameter is specified, the WGS84 ellipsoid is used. | |
credit |
Credit | String |
<optional> |
A credit for the data source, which is displayed on the canvas. This parameter is ignored when accessing a tiled server. | |
tileWidth |
Number |
<optional> |
256 | The width of each tile in pixels. This parameter is ignored when accessing a tiled server. |
tileHeight |
Number |
<optional> |
256 | The height of each tile in pixels. This parameter is ignored when accessing a tiled server. |
maximumLevel |
Number |
<optional> |
The maximum tile level to request, or undefined if there is no maximum. This parameter is ignored when accessing a tiled server. |