PathAnimation class for Android

Android_pathAnimation_class

package com.coolands.open;

import android.graphics.Path;
import android.graphics.PathMeasure;
import android.view.animation.Animation;
import android.view.animation.Transformation;

/**
 * Animation along path
 * by Ewan Chou (https://github.com/coocood)
 */
public class PathAnimation extends Animation {
  private PathMeasure measure;
  private float[] pos = new float[2];
  
  public PathAnimation(Path path) {
    measure = new PathMeasure(path, false);
  }
  
  @Override
  protected void applyTransformation(float interpolatedTime, Transformation t){
    measure.getPosTan(measure.getLength() * interpolatedTime, pos,null);
    t.getMatrix().setTranslate(pos[0], pos[1]);
  }
}