constructor( tileShadowNode ) {

		super();

		if ( ! tileShadowNode ) {

			throw new Error( 'TileShadowNode instance is required for TileShadowNodeHelper.' );

		}

		this.tileShadowNode = tileShadowNode;
		this.config = tileShadowNode.config;
		this.tiles = tileShadowNode.tiles;
		this._debugMeshes = [];
		this._shadowCamHelpers = [];

		this.initialized = false;

	}
@param {TileShadowNode} tileShadowNode The TileShadowNode instance to debug.