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

 * mt4j Copyright (c) 2008 - 2010 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.sceneManagement.transition;



import org.mt4j.MTApplication;

import org.mt4j.components.visibleComponents.shapes.MTRectangle;

import org.mt4j.sceneManagement.Iscene;

import org.mt4j.util.MTColor;

import org.mt4j.util.animation.Animation;

import org.mt4j.util.animation.AnimationEvent;

import org.mt4j.util.animation.IAnimationListener;

import org.mt4j.util.animation.MultiPurposeInterpolator;



import processing.core.PGraphics;



/**

 * The Class FadeTransition.

 * 

 * @author Christopher Ruff

 */

public class FadeTransition extends AbstractTransition {

	

	/** The app. */

	private MTApplication app;

	

	/** The finished. */

	private boolean finished;

	

	/** The anim. */

	private Animation anim;

	

	/** The anim2. */

	private Animation anim2;

	

	/** The full screen quad. */

	private MTRectangle fullScreenQuad;

	

	/** The scene to draw. */

	private Iscene sceneToDraw;

	

	/** The last scene. */

	private Iscene lastScene;

	

	/** The next scene. */

	private Iscene nextScene;

	

	/** The duration. */

	private long duration;

	

	

	/**

	 * Instantiates a new fade transition.

	 * 

	 * @param mtApplication the mt application

	 */

	public FadeTransition(MTApplication mtApplication) {

		this(mtApplication, 2000);

	}

	

	

	/**

	 * Instantiates a new fade transition.

	 * 

	 * @param mtApplication the mt application

	 * @param duration the duration

	 */

	public FadeTransition(MTApplication mtApplication, long duration) {

		super(mtApplication, "Fade Transition");

		this.app = mtApplication;

		this.duration = duration;

		

		this.setClear(true);

			

		finished = false;

		

		anim2 = new Animation("Fade animation 2", new MultiPurposeInterpolator(255,0, this.duration/2f, 0, 0.8f, 1) , this);

		anim2.addAnimationListener(new IAnimationListener(){

			//@Override

			public void processAnimationEvent(AnimationEvent ae) {

				switch (ae.getId()) {

				case AnimationEvent.ANIMATION_STARTED:

				case AnimationEvent.ANIMATION_UPDATED:

					fullScreenQuad.setFillColor(new MTColor(0,0,0, ae.getValue()));

					break;

				case AnimationEvent.ANIMATION_ENDED:

					fullScreenQuad.setFillColor(new MTColor(0,0,0, ae.getValue()));

					finished = true;

					break;

				default:

					break;

				}

			}});

		anim2.setResetOnFinish(true);

		

        anim = new Animation("Fade animation 1", new MultiPurposeInterpolator(0,255, this.duration/2f, 0, 1, 1) , this);

        anim.addAnimationListener(new IAnimationListener(){

        	//@Override

        	public void processAnimationEvent(AnimationEvent ae) {

        		switch (ae.getId()) {

				case AnimationEvent.ANIMATION_STARTED:

				case AnimationEvent.ANIMATION_UPDATED:

					fullScreenQuad.setFillColor(new MTColor(0,0,0, ae.getValue()));

					break;

				case AnimationEvent.ANIMATION_ENDED:

					sceneToDraw = nextScene;

					anim2.start();

					break;

				default:

					break;

				}

        	}});

       anim.setResetOnFinish(true);

       

       fullScreenQuad = new MTRectangle(app,0, 0, app.width, app.height);

       fullScreenQuad.setFillColor(new MTColor(0,0,0,0));

       fullScreenQuad.setNoStroke(true);

	}

	

	/* (non-Javadoc)

	 * @see org.mt4j.sceneManagement.transition.ITransition#setup(org.mt4j.sceneManagement.Iscene, org.mt4j.sceneManagement.Iscene)

	 */

	public void setup(Iscene lastScene, Iscene nextScene) {

		this.lastScene = lastScene;

		this.nextScene = nextScene;

//		sceneToDraw = this.getPreviousScene();

		sceneToDraw = this.lastScene;

		finished = false;

		anim.start();

	}

	

	

	/* (non-Javadoc)

	 * @see org.mt4j.sceneManagement.AbstractScene#drawAndUpdate(processing.core.PGraphics, long)

	 */

	@Override

	public void drawAndUpdate(PGraphics graphics, long timeDelta) {

		super.drawAndUpdate(graphics, timeDelta);

		sceneToDraw.drawAndUpdate(graphics, timeDelta);

		fullScreenQuad.drawComponent(graphics);

	}

	

	

	@Override

	public void onLeave() {

		anim.stop();

		anim2.stop();

		finished = true;

		this.lastScene = null;

		this.nextScene = null;

	}

	

	

	/* (non-Javadoc)

	 * @see org.mt4j.sceneManagement.transition.ITransition#isFinished()

	 */

	public boolean isFinished() {

		return finished;

	}







}