constructor( scope = SceneNode.BACKGROUND_BLURRINESS, scene = null ) {

		super();

		/**
		 * The scope defines the type of scene property that is accessed.
		 *
		 * @type {('backgroundBlurriness'|'backgroundIntensity'|'backgroundRotation')}
		 */
		this.scope = scope;

		/**
		 * A reference to the scene that is going to be accessed.
		 *
		 * @type {?Scene}
		 * @default null
		 */
		this.scene = scene;

	}
Constructs a new scene node.

@param {('backgroundBlurriness'|'backgroundIntensity'|'backgroundRotation')} scope - The scope defines the type of scene property that is accessed.
@param {?Scene} [scene=null] - A reference to the scene.