phaser/src/math/CatmullRom.js

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/**
* [description]
*
* @function Phaser.Math.CatmullRom
* @since 3.0.0
*
* @param {number} t - [description]
* @param {number} p0 - [description]
* @param {number} p1 - [description]
* @param {number} p2 - [description]
* @param {number} p3 - [description]
*
* @return {number} [description]
*/
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var CatmullRom = function (t, p0, p1, p2, p3)
{
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var v0 = (p2 - p0) * 0.5;
var v1 = (p3 - p1) * 0.5;
var t2 = t * t;
var t3 = t * t2;
return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
};
module.exports = CatmullRom;