require(["esri/views/GroundView"], (GroundView) => { /* code goes here */ });
import GroundView from "@arcgis/core/views/GroundView.js";
esri/views/GroundView
This class represents the view for the Ground of a map. It can be used to sample elevation from the terrain surface that is currently visible in the view or to access the LayerViews of the layers in the ground. An instance of this class can be accessed through SceneView.groundView.
Property Overview
Name | Type | Summary | Class |
---|---|---|---|
The name of the class. | Accessor | ||
An elevation sampler that may be used to sample and query elevation values from the ground surface that is currently being displayed. | GroundView | ||
The extent represents the visible portion of ground within the view as an instance of Extent. | GroundView | ||
A collection containing a hierarchical list of all the created LayerViews of the layers in the ground. | GroundView | ||
Value is | GroundView |
Property Details
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elevationSampler
elevationSampler ElevationSamplerreadonly
-
An elevation sampler that may be used to sample and query elevation values from the ground surface that is currently being displayed.
The elevation sampler is not supported for MapView and may be
null
while the ground surface display is being initialized.The resolution of the sampled values depends on the ground elevation display resolution (high resolution close to the camera, low resolution far away from the camera). Because of the dynamic nature of the display resolution, the demResolution property of the returned sampler will always return `{ min: -1, max: -1 }.
If higher or more consistent sample resolution is required, then consider creating a sampler at the desired resolution using ElevationLayer.createSampler or Ground.createSampler.
Examplelet elevationSampler = view.groundView.elevationSampler; // watch for changes in the elevationSampler elevationSampler.on('changed', function() { // get z-values from the elevation displayed in the view let zEnrichedGeometry = elevationSampler.queryElevation(geometry); });
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extent
extent Extentreadonly
Since: ArcGIS Maps SDK for JavaScript 4.28GroundView since 4.7, extent added at 4.28. -
The extent represents the visible portion of ground within the view as an instance of Extent. The ground view extent is computed based on the ground surface elevation at the center of the view, while the SceneView extent is computed at the elevation of all of the scene content at the center of the view. The ground view extent may be more appropriate when synchronizing the viewpoint of a MapView and a SceneView.
- Default Value:null
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layerViews
layerViews Collection<LayerView>readonly
-
A collection containing a hierarchical list of all the created LayerViews of the layers in the ground.
- See also
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updating
updating Booleanreadonly
-
Value is
true
when any of the ground layer views are updating.- Default Value:false
Method Overview
Name | Return Type | Summary | Class |
---|---|---|---|
Adds one or more handles which are to be tied to the lifecycle of the object. | Accessor | ||
Returns true if a named group of handles exist. | Accessor | ||
Removes a group of handles owned by the object. | Accessor |
Method Details
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Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, addHandles added at 4.25. -
Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.
// Manually manage handles const handle = reactiveUtils.when( () => !view.updating, () => { wkidSelect.disabled = false; }, { once: true } ); this.addHandles(handle); // Destroy the object this.destroy();
ParametershandleOrHandles WatchHandle|WatchHandle[]Handles marked for removal once the object is destroyed.
groupKey *optionalKey identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.
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hasHandles
InheritedMethodhasHandles(groupKey){Boolean}
Inherited from AccessorSince: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, hasHandles added at 4.25. -
Returns true if a named group of handles exist.
ParametergroupKey *optionalA group key.
ReturnsType Description Boolean Returns true
if a named group of handles exist.Example// Remove a named group of handles if they exist. if (obj.hasHandles("watch-view-updates")) { obj.removeHandles("watch-view-updates"); }
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Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, removeHandles added at 4.25. -
Removes a group of handles owned by the object.
ParametergroupKey *optionalA group key or an array or collection of group keys to remove.
Exampleobj.removeHandles(); // removes handles from default group obj.removeHandles("handle-group"); obj.removeHandles("other-handle-group");