text: import { Vector3 } from 'three';
  import Node from '../core/Node.js';
  import UniformNode from '../core/UniformNode.js';
  import { NodeUpdateType } from '../core/constants.js';
  
  class Object3DNode extends Node {
  
  	static VIEW_MATRIX = 'viewMatrix';
  	static NORMAL_MATRIX = 'normalMatrix';
  	static WORLD_MATRIX = 'worldMatrix';
  	static POSITION = 'position';
  	static VIEW_POSITION = 'viewPosition';
  
  	constructor( scope = Object3DNode.VIEW_MATRIX, object3d = null ) {
  
  		super();
  
  		this.scope = scope;
  		this.object3d = object3d;
  
  		this.updateType = NodeUpdateType.Object;
  
  		this._uniformNode = new UniformNode( null );
  
  	}
  
  	getNodeType() {
  
  		const scope = this.scope;
  
  		if ( scope === Object3DNode.WORLD_MATRIX || scope === Object3DNode.VIEW_MATRIX ) {
  
  			return 'mat4';
  
  		} else if ( scope === Object3DNode.NORMAL_MATRIX ) {
  
  			return 'mat3';
  
  		} else if ( scope === Object3DNode.POSITION || scope === Object3DNode.VIEW_POSITION ) {
  
  			return 'vec3';
  
  		}
  
  	}
  
  	update( frame ) {
  
  		const object = this.object3d;
  		const uniformNode = this._uniformNode;
  		const scope = this.scope;
  
  		if ( scope === Object3DNode.VIEW_MATRIX ) {
  
  			uniformNode.value = object.modelViewMatrix;
  
  		} else if ( scope === Object3DNode.NORMAL_MATRIX ) {
  
  			uniformNode.value = object.normalMatrix;
  
  		} else if ( scope === Object3DNode.WORLD_MATRIX ) {
  
  			uniformNode.value = object.matrixWorld;
  
  		} else if ( scope === Object3DNode.POSITION ) {
  
  			uniformNode.value.setFromMatrixPosition( object.matrixWorld );
  
  		} else if ( scope === Object3DNode.VIEW_POSITION ) {
  
  			const camera = frame.camera;
  
  			uniformNode.value.setFromMatrixPosition( object.matrixWorld );
  
  			uniformNode.value.applyMatrix4( camera.matrixWorldInverse );
  
  			//uniformNode.value.setFromMatrixPosition( object.modelViewMatrix );
  
  		}
  
  	}
  
  	generate( builder ) {
  
  		const scope = this.scope;
  
  		if ( scope === Object3DNode.WORLD_MATRIX || scope === Object3DNode.VIEW_MATRIX ) {
  
  			this._uniformNode.nodeType = 'mat4';
  
  		} else if ( scope === Object3DNode.NORMAL_MATRIX ) {
  
  			this._uniformNode.nodeType = 'mat3';
  
  		} else if ( scope === Object3DNode.POSITION || scope === Object3DNode.VIEW_POSITION ) {
  
  			this._uniformNode.nodeType = 'vec3';
  			this._uniformNode.value = new Vector3();
  
  		}
  
  		return this._uniformNode.build( builder );
  
  	}
  
  	serialize( data ) {
  
  		super.serialize( data );
  
  		data.scope = this.scope;
  
  	}
  
  	deserialize( data ) {
  
  		super.deserialize( data );
  
  		this.scope = data.scope;
  
  	}
  
  }
  
  export default Object3DNode;
  