phaser/Phaser/system/easing/Sinusoidal.ts

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2013-04-18 13:16:18 +00:00
/// <reference path="../../Game.ts" />
/**
* Phaser - Easing
*
* @desc Based heavily on tween.js by sole (https://github.com/sole/tween.js)
*
* @version 1.0 - 11th January 2013
*
* @author Richard Davey, TypeScript conversion and Phaser integration. See Phaser.TweenManager for the full tween.js author list
*/
module Phaser.Easing {
export class Sinusoidal {
public static In(k) {
return 1 - Math.cos(k * Math.PI / 2);
}
public static Out(k) {
return Math.sin(k * Math.PI / 2);
}
public static InOut(k) {
return 0.5 * (1 - Math.cos(Math.PI * k));
}
}
}