VirtualLighting | References | ArcGIS Maps SDK for JavaScript

import VirtualLighting from "@arcgis/core/views/3d/environment/VirtualLighting.js";

Inheritance:: VirtualLighting→VirtualLighting→Accessor

Since: ArcGIS Maps SDK for JavaScript 4.23

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

Constructor

Parameters

Parameter	Type	Description	Required
properties	`VirtualLightingProperties`

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

Properties

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

Property	Type	Class
`declaredClass` readonly inherited	`string`	Accessor
`directShadowsEnabled` inherited	`boolean`	VirtualLighting
`glow` inherited	`Glow \| null \| undefined`	VirtualLighting
`type` readonly	`"virtual"`

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

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

directShadowsEnabled

inherited Property

Type: 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.castShadows,

FillSymbol3DLayer.castShadows, ExtrudeSymbol3DLayer.castShadows, and PathSymbol3DLayer.castShadows.

Default value: false

glow

autocast inherited Property

Type: Glow | null | undefined

Inherited from: VirtualLighting

Adds a glow effect to the scene intended for stylistic visualizations. When set, this property creates a halo around light emitters, making them appear brighter and more prominent. Accepts a Glow instance or null to disable the effect.

Example:

scene.environment.lighting.glow = new Glow({ intensity: 1 });

type

readonly Property

Type: "virtual"

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.

Methods

Method	Signature	Class
`fromJSON` inherited static	`fromJSON(json: any): any`	JSONSupportMixin
`clone` inherited	`clone(): VirtualLighting`	VirtualLighting
`emit` inherited	`emit<Type extends EventNames<this>>(type: Type, event?: this["@eventTypes"][Type]): boolean`	EventedMixin
`hasEventListener` inherited	`hasEventListener<Type extends EventNames<this>>(type: Type): boolean`	EventedMixin
`on` inherited	`on<Type extends EventNames<this>>(type: Type, listener: EventedCallback<this["@eventTypes"][Type]>): ResourceHandle`	EventedMixin
`toJSON` inherited	`toJSON(): any`	JSONSupportMixin

fromJSON

inheritedstatic Method

Signature: fromJSON (json: any): any

Inherited from: JSONSupportMixin

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameters

Parameter	Type	Description	Required
json	`any`	A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns: any
Returns a new instance of this class.

clone

inherited Method

Signature: clone (): VirtualLighting

Inherited from: VirtualLighting

Creates a deep clone of this object.

Returns: VirtualLighting
Creates a new clone of the instance calling this method.

emit

inherited Method

Signature: emit <Type extends EventNames<this>>(type: Type, event?: this["@eventTypes"][Type]): boolean

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Emits an event on the instance. This method should only be used when creating subclasses of this class.

Parameters

Parameter	Type	Description	Required
type	`Type`	The name of the event.
event	`this["@eventTypes"][Type]`	The event payload.

Returns: boolean
true if a listener was notified

hasEventListener

inherited Method

Signature: hasEventListener <Type extends EventNames<this>>(type: Type): boolean

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Indicates whether there is an event listener on the instance that matches the provided event name.

Parameters

Parameter	Type	Description	Required
type	`Type`	The name of the event.

Returns: boolean
Returns true if the class supports the input event.

on

inherited Method

Signature: on <Type extends EventNames<this>>(type: Type, listener: EventedCallback<this["@eventTypes"][Type]>): ResourceHandle

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Registers an event handler on the instance. Call this method to hook an event with a listener.

Parameters

Parameter	Type	Description	Required
type	`Type`	An event or an array of events to listen for.
listener	`EventedCallback<this["@eventTypes"][Type]>`	The function to call when the event fires.

Returns

ResourceHandle

Returns an event handler with a remove() method that should be called to stop listening for the event(s).

Property	Type	Description
remove	Function	When called, removes the listener from the event.

Example

view.on("click", function(event){
  // event is the event handle returned after the event fires.
  console.log(event.mapPoint);
});

toJSON

inherited Method

Signature: toJSON (): any

Inherited from: JSONSupportMixin

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns: any
The ArcGIS portal JSON representation of an instance of this class.