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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 Bounce extends TweenEquation {
public static final Bounce IN = new Bounce() {
@Override
public final float compute(float t) {
return 1 - OUT.compute(1-t);
}
@Override
public String toString() {
return "Bounce.IN";
}
};
public static final Bounce OUT = new Bounce() {
@Override
public final float compute(float t) {
if (t < (1/2.75)) {
return 7.5625f*t*t;
} else if (t < (2/2.75)) {
return 7.5625f*(t-=(1.5f/2.75f))*t + .75f;
} else if (t < (2.5/2.75)) {
return 7.5625f*(t-=(2.25f/2.75f))*t + .9375f;
} else {
return 7.5625f*(t-=(2.625f/2.75f))*t + .984375f;
}
}
@Override
public String toString() {
return "Bounce.OUT";
}
};
public static final Bounce INOUT = new Bounce() {
@Override
public final float compute(float t) {
if (t < 0.5f) return IN.compute(t*2) * .5f;
else return OUT.compute(t*2-1) * .5f + 0.5f;
}
@Override
public String toString() {
return "Bounce.INOUT";
}
};
}
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