| package aurelienribon.tweenengine.equations; |
| |
| import aurelienribon.tweenengine.TweenEquation; |
| |
| /** |
| * Easing equation based on Robert Penner's work: |
| * http://robertpenner.com/easing/ |
| * @author Aurelien Ribon | http://www.aurelienribon.com/ |
| */ |
| public abstract class Cubic extends TweenEquation { |
| public static final Cubic IN = new Cubic() { |
| @Override |
| public final float compute(float t) { |
| return t*t*t; |
| } |
| |
| @Override |
| public String toString() { |
| return "Cubic.IN"; |
| } |
| }; |
| |
| public static final Cubic OUT = new Cubic() { |
| @Override |
| public final float compute(float t) { |
| return (t-=1)*t*t + 1; |
| } |
| |
| @Override |
| public String toString() { |
| return "Cubic.OUT"; |
| } |
| }; |
| |
| public static final Cubic INOUT = new Cubic() { |
| @Override |
| public final float compute(float t) { |
| if ((t*=2) < 1) return 0.5f*t*t*t; |
| return 0.5f * ((t-=2)*t*t + 2); |
| } |
| |
| @Override |
| public String toString() { |
| return "Cubic.INOUT"; |
| } |
| }; |
| } |