content: /*
   * Copyright (c) 2012 Jason Polites
   * 
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *     http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.polites;
  
  
  /**
   * @author Jason Polites
   *
   */
  public class MoveAnimation implements Animation {
  
  	private boolean firstFrame = true;
  	
  	private float startX;
  	private float startY;
  	
  	private float targetX;
  	private float targetY;
  	private long animationTimeMS = 100;
  	private long totalTime = 0;
  	
  	private MoveAnimationListener moveAnimationListener;
  	
  	/* (non-Javadoc)
  	 * @see com.polites.android.Animation#update(com.polites.android.GestureImageView, long)
  	 */
  	@Override
  	public boolean update(GestureImageView view, long time) {
  		totalTime += time;
  		
  		if(firstFrame) {
  			firstFrame = false;
  			startX = view.getImageX();
  			startY = view.getImageY();
  		}
  		
  		if(totalTime < animationTimeMS) {
  			
  			float ratio = (float) totalTime / animationTimeMS;
  			
  			float newX = ((targetX - startX) * ratio) + startX;
  			float newY = ((targetY - startY) * ratio) + startY;
  			
  			if(moveAnimationListener != null) {
  				moveAnimationListener.onMove(newX, newY);
  			}
  			
  			return true;
  		}
  		else {
  			if(moveAnimationListener != null) {
  				moveAnimationListener.onMove(targetX, targetY);
  			}
  		}
  		
  		return false;
  	}
  
  	public void reset() {
  		firstFrame = true;
  		totalTime = 0;
  	}
  
  	
  	public float getTargetX() {
  		return targetX;
  	}
  
  	
  	public void setTargetX(float targetX) {
  		this.targetX = targetX;
  	}
  
  	
  	public float getTargetY() {
  		return targetY;
  	}
  	
  	public void setTargetY(float targetY) {
  		this.targetY = targetY;
  	}
  	
  	public long getAnimationTimeMS() {
  		return animationTimeMS;
  	}
  
  	public void setAnimationTimeMS(long animationTimeMS) {
  		this.animationTimeMS = animationTimeMS;
  	}
  	
  	public void setMoveAnimationListener(MoveAnimationListener moveAnimationListener) {
  		this.moveAnimationListener = moveAnimationListener;
  	}
  }
  