/***********************************************************************

 * 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)

	 */

	public boolean processGestureEvent(MTGestureEvent g) {

		ArcBallGestureEvent aEvt =  (ArcBallGestureEvent)g;

		

		if (!useCustomTarget)

			target = aEvt.getTarget(); 

		

		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;

	}



}