一个Java3D 应用程序

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
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.*;
//   HelloJava3Db renders a single, rotated cube.  
public class HelloJava3Db extends Applet {
    public BranchGroup createSceneGraph() {
	// Create the root of the branch graph
	BranchGroup objRoot = new BranchGroup();

	// rotate object has composited transformation matrix
	Transform3D rotate = new Transform3D();
	Transform3D tempRotate = new Transform3D();
        rotate.rotX(Math.PI/4.0d);
	tempRotate.rotY(Math.PI/5.0d);
        rotate.mul(tempRotate);
	TransformGroup objRotate = new TransformGroup(rotate);

	objRoot.addChild(objRotate);
	objRotate.addChild(new ColorCube(0.4));
	// Let Java 3D perform optimizations on this scene graph.
        objRoot.compile();
	return objRoot;
    } // end of CreateSceneGraph method of HelloJava3Db
    // Create a simple scene and attach it to the virtual universe
    public HelloJava3Db() {
        setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(config);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();

        // SimpleUniverse is a Convenience Utility class
        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);

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

        simpleU.addBranchGraph(scene);
    } // end of HelloJava3Db (constructor)
    //  The following allows this to be run as an application
    //  as well as an applet

    public static void main(String[] args) {
	Frame frame = new MainFrame(new HelloJava3Db(), 256, 256);
    } // end of main (method of HelloJava3Db)

} // end of class HelloJava3Db