import com.sun.j3d.utils.universe.SimpleUniverse; 
import com.sun.j3d.utils.geometry.*; 
import javax.media.j3d.*;
import javax.vecmath.Vector3f;

//import java.applet.Applet; 
public class TurningCubes3
{
  public TurningCubes3()
   {SimpleUniverse su=new SimpleUniverse();
    BranchGroup bg=new BranchGroup();
    
    TransformGroup tgAll=new TransformGroup(); // insert a tg between bg and child cubes
    bg.addChild(tgAll);

    tgAll.addChild(TGroup(0.2f, -0.3f, -0.3f, 0.0f));  // child-cubes attached to tg instead of bg
    tgAll.addChild(TGroup(0.2f, -0.3f, 0.3f, 0.0f));
    tgAll.addChild(TGroup(0.2f, 0.3f, -0.3f, 0.0f));
    tgAll.addChild(TGroup(0.2f, 0.3f, 0.3f, 0.0f));
 
    tgAll.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    Alpha a=new Alpha(-1,5000);
    Transform3D tfAll = new Transform3D();  // Add rotation for the whole group
    tfAll.rotX(Math.PI/4);

    RotationInterpolator ri = new RotationInterpolator(a,tgAll,tfAll,0f,(float)(2*Math.PI));
    BoundingSphere bs = new BoundingSphere();
    ri.setSchedulingBounds(bs);
    tgAll.addChild(ri);
    
    su.getViewingPlatform().setNominalViewingTransform();
    su.addBranchGraph(bg);
   }

public static void main(String[] args)
  {new TurningCubes3();
  }

public TransformGroup TGroup(float size, float x, float y, float z)
{TransformGroup tg=new TransformGroup();
 ColorCube cc=new ColorCube(size);
 tg.addChild(cc); 
 Transform3D tf=new Transform3D(); 
 Vector3f vect=new Vector3f(x, y, z);
 tf.setTranslation(vect);
 tg.setTransform(tf);
 return tg;
}
}