// Java 3D Test Applet
// QuatTest.java
//   Copyright (c) 1999 ENDO Yasuyuki
//                      mailto:yasuyuki@javaopen.org
//                      http://www.javaopen.org/j3dbook/index.html

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.SimpleUniverse;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseBehaviorCallback;

public class QuatTest extends Applet {
  private Canvas3D canvas = null;
  private TransformGroup trans = null;
  private Quat4f quat4f = new Quat4f();
  private TuplePanel tuplePanel = null;

  public QuatTest() {
    this.setLayout(new BorderLayout());
    
    tuplePanel = new TuplePanel(quat4f);
    tuplePanel.setColumns(8);
    tuplePanel.addTupleEventListener( new TupleEventListener() {
      public void tupleStateChanged(TupleEvent e) {
	quat4f = e.getQuat4f();
	Transform3D t3d = new Transform3D();
	trans.getTransform(t3d);
	t3d.setRotation(quat4f);
	trans.setTransform(t3d);
      }
    });
    this.add(tuplePanel, BorderLayout.SOUTH);

    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    this.canvas = new Canvas3D(config);
    this.add(this.canvas, BorderLayout.CENTER);

    SimpleUniverse universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();
  
    universe.addBranchGraph(createSceneGraph());
  }

  private BranchGroup createSceneGraph() {
    BranchGroup root = new BranchGroup();
    
    trans = new TransformGroup();
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    trans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);

    BoundingSphere bounds = new BoundingSphere(new Point3d(), 100.0);
    
    MouseRotate rotator = new MouseRotate(trans);
    rotator.setSchedulingBounds(bounds);
    rotator.setupCallback( new MouseBehaviorCallback() {
      public void transformChanged(int flag, Transform3D trans) {
	trans.get(quat4f);
	tuplePanel.set(quat4f);
      }
    });
    root.addChild(rotator);
    
    trans.addChild( new ColorCube(0.4) );
    
    root.addChild(trans);
    
    return root;
  }

  public static void main(String[] args) {
    QuatTest applet = new QuatTest();
    Frame frame = new MainFrame(applet, 500, 500);
  }
}