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<h1 class="file-heading">File: src\animations\tweens\easing\Back.ts</h1>
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<pre class="code prettyprint linenums">
/**
* Contains various methods that can be used when you are wanting to ease a Tween.
*
* @module Tweens
* @submodule Easing
* @main Easing
*/
module Kiwi.Animations.Tweens.Easing {
/**
*
* @class Back
* @namespace Kiwi.Animations.Tweens.Easing
*
*/
export class Back {
/**
* The type of object this is.
* @method objType
* @return {String} "Back"
* @public
*/
public objType() {
return "Back";
}
/**
*
* @method In
* @param k {Any}
* @return {Number}
* @static
* @public
*/
public static In(k) {
var s = 1.70158;
return k * k * ((s + 1) * k - s);
}
/**
*
* @method Out
* @param {Any} k
* @return {Number}
* @static
* @public
*/
public static Out(k) {
var s = 1.70158;
return --k * k * ((s + 1) * k + s) + 1;
}
/**
*
* @method InOut
* @param k {Any}
* @return {Number}
* @static
* @public
*/
public static InOut(k) {
var s = 1.70158 * 1.525;
if ((k *= 2) < 1) return 0.5 * (k * k * ((s + 1) * k - s));
return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
}
}
}
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