java，

java，

package org.jdesktop.j3d.examples.applet3d;

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;

public class Applet3D extends Applet {

    private SimpleUniverse u = null;
   
    public BranchGroup createSceneGraph() {
 // Create the root of the branch graph
 BranchGroup objRoot = new BranchGroup();

 // Create the TransformGroup node and initialize it to the
 // identity. Enable the TRANSFORM_WRITE capability so that
 // our behavior code can modify it at run time. Add it to
 // the root of the subgraph.
 TransformGroup objTrans = new TransformGroup();
 objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
 objRoot.addChild(objTrans);

 // Create a simple Shape3D node; add it to the scene graph.
 objTrans.addChild(new ColorCube(0.4));

 // Create a new Behavior object that will perform the
 // desired operation on the specified transform and add
 // it into the scene graph.
 Transform3D yAxis = new Transform3D();
 Alpha rotationAlpha = new Alpha(-1, 4000);

 RotationInterpolator rotator =
     new RotationInterpolator(rotationAlpha, objTrans, yAxis,
         0.0f, (float) Math.PI*2.0f);
 BoundingSphere bounds =
     new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
 rotator.setSchedulingBounds(bounds);
 objRoot.addChild(rotator);

        // Have Java 3D perform optimizations on this scene graph.
        objRoot.compile();

 return objRoot;
    }

    public Applet3D() {
    }

    public void init() {
 setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();

 Canvas3D c = new Canvas3D(config);
 add("Center", c);

 // Create a simple scene and attach it to the virtual universe
 BranchGroup scene = createSceneGraph();
 u = new SimpleUniverse(c);

        // This will move the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        u.getViewingPlatform().setNominalViewingTransform();

 u.addBranchGraph(scene);
    }

    public void destroy() {
 u.cleanup();
    }

    //
    // The following allows Applet3D to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
 new MainFrame(new Applet3D(), 128, 128);
    }
}