mirror of
https://github.com/photonstorm/phaser
synced 2024-12-25 12:33:38 +00:00
61 lines
1.3 KiB
TypeScript
61 lines
1.3 KiB
TypeScript
/// <reference path="../../_definitions.ts" />
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/**
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* @author Richard Davey <rich@photonstorm.com>
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* @author sole (http://soledadpenades.com), tween.js
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* @copyright 2013 Photon Storm Ltd.
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* @license https://github.com/photonstorm/phaser/blob/master/license.txt MIT License
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* @module Phaser
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*/
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module Phaser.Easing {
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/**
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* Cubic easing methods.
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*
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* @class Cubic
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*/
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export class Cubic {
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/**
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* The In ease method.
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*
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* @method In
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* @param {Number} k The value to ease.
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* @return {Number} The eased value.
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*/
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public static In(k) {
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return k * k * k;
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}
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/**
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* The Out ease method.
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*
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* @method Out
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* @param {Number} k The value to ease.
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* @return {Number} The eased value.
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*/
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public static Out(k) {
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return --k * k * k + 1;
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}
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/**
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* The InOut ease method.
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*
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* @method InOut
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* @param {Number} k The value to ease.
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* @return {Number} The eased value.
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*/
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public static InOut(k) {
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if ((k *= 2) < 1) return 0.5 * k * k * k;
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return 0.5 * ((k -= 2) * k * k + 2);
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}
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}
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}
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