import java.awt.AWTEvent;
import java.awt.event.*;
import java.util.Enumeration;
import javax.media.j3d.*;
import javax.swing.JRadioButton;
import javax.vecmath.*;

import com.sun.j3d.utils.universe.*;

public class HMDTrackerToIPBehavior extends Behavior {

  private WakeupCondition keyCriterion;
  Screen3D screen;
  JRadioButton rb;
  
  public HMDTrackerToIPBehavior(Screen3D screen, JRadioButton rb) {
    this.screen = screen;
    this.rb = rb;
    System.out.println("HMDTrackerToIPBehavior constructor");
  }

  public void initialize() {
    
    WakeupCriterion[] keyEvents = new WakeupCriterion[2];

    keyEvents[0] = new WakeupOnAWTEvent( KeyEvent.KEY_PRESSED );
    keyEvents[1] = new WakeupOnAWTEvent( KeyEvent.KEY_RELEASED );
    keyCriterion = new WakeupOr( keyEvents );
    wakeupOn( keyCriterion );
    System.out.println("initialize complete");
  }



  public void processStimulus( Enumeration criteria )
  {
 
    WakeupCriterion wakeup;
    AWTEvent[] event;
    while( criteria.hasMoreElements() ) {
      wakeup = (WakeupCriterion) criteria.nextElement();
      if( !(wakeup instanceof WakeupOnAWTEvent) )
        continue;

      event = ((WakeupOnAWTEvent)wakeup).getAWTEvent();
      for( int i = 0; i < event.length; i++ )
      {
        if( event[i].getID() == KeyEvent.KEY_PRESSED & rb.isSelected()==true)
        {
          processKeyEvent((KeyEvent)event[i]);
        }
      }
    }
    wakeupOn( keyCriterion );
  }

  protected void processKeyEvent(KeyEvent event) {
    int keycode = event.getKeyCode();
    Transform3D tscreen = new Transform3D(); 
    screen.getHeadTrackerToLeftImagePlate(tscreen);
    
    Transform3D tchange = new Transform3D();
    tchange.setIdentity();
    
    if(keycode == KeyEvent.VK_X) {
       System.out.println("Rotating Imageplate around X");
       tchange.rotX(Math.PI/36);   
    } 
    else if(keycode == KeyEvent.VK_Y) {
       System.out.println("Rotating Imageplate around Y");
       tchange.rotY(Math.PI/36);      
    }  
    else if(keycode == KeyEvent.VK_Z) {
       System.out.println("Rotating Imageplate around Z");
       tchange.rotZ(Math.PI/36);   
    }
 
    tscreen.mul(tchange);
    screen.setHeadTrackerToLeftImagePlate(tscreen);   
  }


  //moves forward backward or rotates left right

}