Java 3D Desktop Environment旨在使用Java 3D来创建一个3D桌面环境。功能包括：分布式的应用程序

				package org.j3de.ui.impl;         
				
				import javax.media.j3d.Transform3D;  
				
				import javax.vecmath.Vector3f;
				
				import org.j3de.ui.UIElementMapper;
				
				public class PlaneLayout extends GraphLayout {
				  private Vector3f translation;
				  
				  public PlaneLayout() {
				    translation = new Vector3f();
				  }
				
				  public void normalize(Transform3D transform) {    
				    transform.get(translation);
				    translation.z = 0;
				    transform.setTranslation(translation);
				  }                      
				
				}