Android Open Source - AniDroid Easing

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Back to project page AniDroid.

License

The source code is released under:

GNU Lesser General Public License

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Java Source Code

/*
Ani (a processing animation library) // w w  w  . j  av  a 2s . c o m
Copyright (c) 2010 Benedikt Gross

http://www.looksgood.de/libraries/Ani

Standing on the shoulders of giants:
Jack Doyle - TweenLite AS3 Library (http://blog.greensock.com/tweenlite/)
Robert Penner - Equations (http://robertpenner.com/easing/)
Andreas Schlegel - ControlP5 (http://www.sojamo.de/libraries/);
Ekene Ijeoma - Tween Processin Library (http://www.ekeneijeoma.com/processing/tween/)

AniCore, Ani and AniSequence includes many ideas and code of the nice people above!
Thanks a lot for sharing your code with the rest of the world!

This library is free software; you can redistribute it and/or modify it under the terms 
of the GNU Lesser General Public License as published by the Free Software Foundation; 
either version 2.1 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this 
library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 
Boston, MA 02110, USA
*/
package net.mediavrog.ani.easing;

import net.mediavrog.ani.AniConstants;

/**
 * The abstract class Easing, which maps time to position.
 */
public abstract class Easing implements AniConstants {
  public int easingMode = OUT;
  
  public Easing() {
  }

  /**
   * Calc easing: map time to position. 
   * 
   * @param t the time
   * @param b the begin
   * @param c the change
   * @param d the duration
   * @return the float
   */
  public final float calcEasing(float t, float b, float c, float d){
    float out;
    switch( easingMode ){
    case IN:
      out = easeIn(t, b, c, d);
      break;
    case OUT:
    default:
      out = easeOut(t, b, c, d);
      break;
    case IN_OUT:
      out = easeInOut(t, b, c, d);
      break;
    }
    return out;
  }
  
  /**
   * Set the shape mode
   * @param theEasingMode IN, OUT, IN_OUT
   */
  public final void setMode(int theEasingMode){
    easingMode = theEasingMode;
  }
  
  /**
   * All extensions of the Easing class should implement the following methods
   */
  protected abstract float easeIn(float t, float b, float c, float d);
  protected abstract float easeOut(float t, float b, float c, float d);
  protected abstract float easeInOut(float t, float b, float c, float d);
}

Java Source Code List