import java.applet.*;
import java.awt.*;
import java.net.*;
import javax.swing.*;
import javax.vecmath.*;
import javax.media.j3d.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.applet.MainFrame; 

public class Uppg3d extends JApplet{
  private SimpleUniverse su;
  private Canvas3D canvas3D;
  private URL imURL;

  public void init(){
    this.setSize(640, 480);
    this.getContentPane().setLayout(new BorderLayout());
    canvas3D = new Canvas3D(null);
    this.getContentPane().add("Center",canvas3D);

    //Skapa ett universum med en BranchGraph
    su = new SimpleUniverse(canvas3D);
    su.getViewingPlatform().setNominalViewingTransform();
    su.addBranchGraph(makeBranchGraph());
  }//init

  BranchGroup makeBranchGraph(){
    BranchGroup bg = new BranchGroup();
    TransformGroup tg = new TransformGroup();

    //Tillåt uppdateringar under runtime
    tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    bg.addChild(tg);
    tg.addChild(makeBox());

    //Skapa ett sfärisk påverkbart område
    BoundingSphere bounds = new BoundingSphere( 
    new Point3d(0.0, 0.0, 0.0), 100.0);

    RotationInterpolator ri = new RotationInterpolator(new Alpha(-1, 7000), tg); 
    ri.setSchedulingBounds(bounds); 
    Transform3D rotor = new Transform3D(); 
    rotor.rotZ(Math.PI/2.0f); 	  
    ri.setTransformAxis(rotor);		  
	  
    tg.addChild(ri);
    return bg;
  }//makeBranchGraph
 


  public com.sun.j3d.utils.geometry.Box makeBox(){
    Appearance app = new Appearance();
    try{
      imURL = new URL(getCodeBase(), "3d.jpg");
    }catch(Exception murle){}

    //Ladda in ytmaterialet
    TextureLoader tl = new TextureLoader(imURL, new String("RGB"), this);
    app.setTexture(tl.getTexture());

    //Skapa en box
    com.sun.j3d.utils.geometry.Box box = new com.sun.j3d.utils.geometry.Box(0.6f, 0.3f, 0.3f,com.sun.j3d.utils.geometry.Box.GENERATE_TEXTURE_COORDS, app); 
    return box;
  }//makeBox
  
}//Uppg3c