mirror of
https://github.com/wassname/phaser.git
synced 2026-08-12 12:20:38 +08:00
39 lines
707 B
TypeScript
39 lines
707 B
TypeScript
/// <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 Quartic {
|
|
|
|
public static In(k) {
|
|
|
|
return k * k * k * k;
|
|
|
|
}
|
|
|
|
public static Out(k) {
|
|
|
|
return 1 - (--k * k * k * k);
|
|
|
|
}
|
|
|
|
public static InOut(k) {
|
|
|
|
if ((k *= 2) < 1) return 0.5 * k * k * k * k;
|
|
return -0.5 * ((k -= 2) * k * k * k - 2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|