import java.applet.Applet;
import java.awt.*;
import javax.swing.*;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.SimpleUniverse;
import javax.media.j3d.*;
import javax.vecmath.*;

public class Kuup2a extends JApplet implements Runnable{
  TransformGroup keere1;
  double nurk;
  
  public Kuup2a() {
	Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
   getContentPane().add(c, BorderLayout.CENTER);
	
	BranchGroup juur = new BranchGroup();
	Transform3D keerd1=new Transform3D();
	keere1=new TransformGroup(keerd1);
	keere1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
	juur.addChild(keere1);
   keere1.addChild(new ColorCube(0.5));
   juur.compile();

	SimpleUniverse u = new SimpleUniverse(c);
   u.getViewingPlatform().setNominalViewingTransform();
	u.addBranchGraph(juur);
	new Thread(this).start();
  }
  public void run(){
    while(true){
      try{Thread.sleep(50);}catch(Exception e){}
      nurk+=0.1;
      double kaugus=-1+Math.sin(nurk/3);
      Transform3D t=new Transform3D();
      t.rotX(nurk);
      t.setTranslation(new Vector3d(0, 0, kaugus));
      keere1.setTransform(t);
    }
  }

    public static void main(String[] args) {
      Frame f=new Frame("Keerlev kuup");
      f.add(new Kuup2a());
      f.setSize(300, 300);
      f.setVisible(true);
    }
}