VirtualLighting | API Reference | ArcGIS Maps SDK for JavaScript 4.32

The VirtualLighting class allows you to change the lighting in the scene to virtual light. The position of the light follows the camera and has a slight top-right offset in respect to the camera.

scene-lightings

Example:

let view = new SceneView({
  container: "viewDiv",

  map: new Map({
    basemap: "satellite",
    ground: "world-elevation"
  }),
  environment: {
    lighting: {
      type: "virtual"    // autocasts as new VirtualLighting()
    }
  }
});

The lighting visualization updates as soon as the type property changes:

view.environment.lighting = {
   type: "virtual",
   directShadowsEnabled: true    // autocasts as new VirtualLighting({ directShadowsEnabled: true })
}

See also

Constructors

VirtualLighting Constructor new VirtualLighting(properties)

Parameter

properties Object

optional

See the properties for a list of all the properties that may be passed into the constructor.

Property Overview

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

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Type	Summary	Class
String	The name of the class.	Accessor
Boolean	Indicates whether to show shadows cast by the light source.	VirtualLighting
String	Indicates that the light source is virtual light.	VirtualLighting

Property Details

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

The name of the class. The declared class name is formatted as esri.folder.className.

directShadowsEnabled Inherited Property directShadowsEnabled Boolean Inherited from VirtualLighting

Indicates whether to show shadows cast by the light source. Shadows are only displayed for real world 3D objects. Terrain doesn't cast shadows. In local scenes at small zoom levels, shadows are not displayed. For more control on which 3D objects cast shadows use the castShadows property available on ObjectSymbol3DLayer,

FillSymbol3DLayer, ExtrudeSymbol3DLayer, and PathSymbol3DLayer.

Default Value:false

type Inherited Property type Stringreadonly Inherited from VirtualLighting

Indicates that the light source is virtual light. Virtual light is top - right position respect to the camera enabling user to observe the scene independant to the possition of the sun.

For VirtualLighting the type is always "virtual".

Method Overview

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Return Type	Summary	Class
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
VirtualLighting	Creates a deep clone of this object.	VirtualLighting
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor 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();

Parameters

handleOrHandles WatchHandle|WatchHandle []

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key 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.

clone Inherited Method clone(){VirtualLighting} Inherited from VirtualLighting

Creates a deep clone of this object.

Returns

Type	Description
VirtualLighting	Creates a new clone of the instance calling this method.

hasHandles Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type	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");
}

removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");