/*
 * $RCSfile: PickRotateBehavior.java,v $
 *
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 *
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
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 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
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 *   distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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 * You acknowledge that this software is not designed, licensed or
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 * $Revision: 1.4 $
 * $Date: 2007/02/09 17:20:14 $
 * $State: Exp $
 */

package com.sun.j3d.utils.behaviors.picking;

import com.sun.j3d.utils.behaviors.mouse.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.media.j3d.*;
import javax.vecmath.*;

/*
 * A mouse behavior that allows user to pick and drag scene graph objects.
 * Common usage: 
 * <p>
 * 1. Create your scene graph.
 * <p>
 * 2. Create this behavior with root and canvas.
 * <p>
 * <blockquote><pre>
 *	PickRotateBehavior behavior = new PickRotateBehavior(canvas, root, bounds);
 *      root.addChild(behavior);
 * </pre></blockquote>
 * <p>
 * The above behavior will monitor for any picking events on
 * the scene graph (below root node) and handle mouse drags on pick hits.
 * Note the root node can also be a subgraph node of the scene graph (rather
 * than the topmost).
 */

/**
 * @deprecated As of Java 3D version 1.2, replaced by
 * <code>com.sun.j3d.utils.picking.behaviors.PickRotateBehavior</code>
 *
 * @see com.sun.j3d.utils.picking.behaviors.PickRotateBehavior
 */

public class PickRotateBehavior extends PickMouseBehavior implements MouseBehaviorCallback {
  MouseRotate drag;
  int pickMode = PickObject.USE_BOUNDS;
  private PickingCallback callback=null;
  private TransformGroup currentTG;

  /**
   * Creates a pick/rotate behavior that waits for user mouse events for
   * the scene graph. This method has its pickMode set to BOUNDS picking. 
   * @param root   Root of your scene graph.
   * @param canvas Java 3D drawing canvas.
   * @param bounds Bounds of your scene.
   **/

  public PickRotateBehavior(BranchGroup root, Canvas3D canvas, Bounds bounds){
    super(canvas, root, bounds);
    drag = new MouseRotate(MouseRotate.MANUAL_WAKEUP);
    drag.setTransformGroup(currGrp);
    currGrp.addChild(drag);
    drag.setSchedulingBounds(bounds);
    this.setSchedulingBounds(bounds);
  }

  /**
   * Creates a pick/rotate behavior that waits for user mouse events for
   * the scene graph.
   * @param root   Root of your scene graph.
   * @param canvas Java 3D drawing canvas.
   * @param bounds Bounds of your scene.
   * @param pickMode specifys PickObject.USE_BOUNDS or PickObject.USE_GEOMETRY.
   * Note: If pickMode is set to PickObject.USE_GEOMETRY, all geometry object in 
   * the scene graph that allows pickable must have its ALLOW_INTERSECT bit set. 
   **/

  public PickRotateBehavior(BranchGroup root, Canvas3D canvas, Bounds bounds, 
			    int pickMode){
    super(canvas, root, bounds);
    drag = new MouseRotate(MouseRotate.MANUAL_WAKEUP);
    drag.setTransformGroup(currGrp);
    currGrp.addChild(drag);
    drag.setSchedulingBounds(bounds);
    this.setSchedulingBounds(bounds);
    this.pickMode = pickMode;
  }

  /**
   * Sets the pickMode component of this PickRotateBehavior to the value of
   * the passed pickMode.
   * @param pickMode the pickMode to be copied.
   **/  


  public void setPickMode(int pickMode) {
    this.pickMode = pickMode;
  }

 /**
   * Return the pickMode component of this PickRotateBehavior.
   **/ 

  public int getPickMode() {
    return pickMode;
  }

  /**
   * Update the scene to manipulate any nodes. This is not meant to be 
   * called by users. Behavior automatically calls this. You can call 
   * this only if you know what you are doing.
   * 
   * @param xpos Current mouse X pos.
   * @param ypos Current mouse Y pos.
   **/
  public void updateScene(int xpos, int ypos){
    TransformGroup tg = null;
    
    if (!mevent.isMetaDown() && !mevent.isAltDown()){
      
      //      tg = (TransformGroup) pickScene.pickNode(pickScene.pickClosest(xpos, ypos),
      //				       PickObject.TRANSFORM_GROUP);

      tg =(TransformGroup)pickScene.pickNode(pickScene.pickClosest(xpos, ypos,pickMode),
					     PickObject.TRANSFORM_GROUP);
      // Make sure the selection exists and is movable. 
      if ((tg != null) && 
	  (tg.getCapability(TransformGroup.ALLOW_TRANSFORM_READ)) && 
	  (tg.getCapability(TransformGroup.ALLOW_TRANSFORM_WRITE))){
	drag.setTransformGroup(tg);
	drag.wakeup();
	currentTG = tg;
      } else if (callback!=null)
	callback.transformChanged( PickingCallback.NO_PICK, null );
    }
  }

  /**
    * Callback method from MouseRotate
    * This is used when the Picking callback is enabled
    */
  public void transformChanged( int type, Transform3D transform ) {
      callback.transformChanged( PickingCallback.ROTATE, currentTG );
  }
 
  /**
    * Register the class @param callback to be called each
    * time the picked object moves
    */
  public void setupCallback( PickingCallback callback ) {
      this.callback = callback;
      if (callback==null)
          drag.setupCallback( null );
      else
          drag.setupCallback( this );
  }
}

