Package org.mt4j.input.gestureAction

Source Code of org.mt4j.input.gestureAction.DefaultArcballAction

/***********************************************************************
* mt4j Copyright (c) 2008 - 2009 Christopher Ruff, Fraunhofer-Gesellschaft All rights reserved.
*   This program is free software: you can redistribute it and/or modify
*   it under the terms of the GNU General Public License as published by
*   the Free Software Foundation, either version 3 of the License, or
*   (at your option) any later version.
*
*   This program is distributed in the hope that it will be useful,
*   but WITHOUT ANY WARRANTY; without even the implied warranty of
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*   GNU General Public License for more details.
*
*   You should have received a copy of the GNU General Public License
*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
***********************************************************************/
package org.mt4j.input.gestureAction;

import org.mt4j.components.MTComponent;
import org.mt4j.components.interfaces.IMTComponent3D;
import org.mt4j.input.inputProcessors.IGestureEventListener;
import org.mt4j.input.inputProcessors.MTGestureEvent;
import org.mt4j.input.inputProcessors.componentProcessors.arcballProcessor.ArcBallGestureEvent;

/**
* The Class DefaultArcballAction.
*
* @author Christopher Ruff
*/
public class DefaultArcballAction implements IGestureEventListener {
 
  /** The target. */
  private IMTComponent3D target;
 
  /** The use custom target. */
  private boolean useCustomTarget;
 
  /**
   * Instantiates a new default arcball action.
   */
  public DefaultArcballAction(){
    this.useCustomTarget = false;
  }
 
  /**
   * Instantiates a new default arcball action.
   *
   * @param customTarget the target
   */
  public DefaultArcballAction(IMTComponent3D customTarget){
    this.target = customTarget;
    this.useCustomTarget = true;
  }
 
  /* (non-Javadoc)
   * @see org.mt4j.input.inputProcessors.IGestureEventListener#processGestureEvent(org.mt4j.input.inputProcessors.MTGestureEvent)
   */
  //@Override
  public boolean processGestureEvent(MTGestureEvent g) {
    ArcBallGestureEvent aEvt =  (ArcBallGestureEvent)g;
   
    if (!useCustomTarget)
      target = aEvt.getTargetComponent();
   
    if (target instanceof MTComponent){
      ((MTComponent)target).sendToFront();
    }
   
    if (aEvt.getId() == ArcBallGestureEvent.GESTURE_UPDATED){
      if (target instanceof MTComponent){
        MTComponent comp = (MTComponent)target;
        comp.transform(aEvt.getTransformationMatrix());
      }
    }
    return false;
  }

}
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