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 HelloUniverse extends Applet {

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

        // Create a Transform3D that is a rotation about the
        // Y-axis.  Add this to a TransformGroup and add the
        // TransformGroup to the root of the subgraph.      
        Transform3D rotateY = new Transform3D();
        rotateY.rotY(.6);
        TransformGroup objTrans = 
            new TransformGroup(rotateY);
        objRoot.addChild(objTrans);

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

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

        return objRoot;
    }

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

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

        SimpleUniverse u = new SimpleUniverse(c);
        BranchGroup scene = createSceneGraph();

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

        u.addBranchGraph(scene);
    }

    //
    // The following allows HelloUniverse to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
        new MainFrame(new HelloUniverse(), 256, 256);
    }
}