mirror of
https://github.com/photonstorm/phaser
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39 lines
800 B
JavaScript
39 lines
800 B
JavaScript
/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2018 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
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*/
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var Linear = require('../Linear');
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/**
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* [description]
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*
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* @function Phaser.Math.Interpolation.Linear
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* @since 3.0.0
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*
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* @param {float} v - [description]
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* @param {number} k - [description]
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*
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* @return {number} [description]
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*/
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var LinearInterpolation = function (v, k)
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{
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var m = v.length - 1;
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var f = m * k;
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var i = Math.floor(f);
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if (k < 0)
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{
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return Linear(v[0], v[1], f);
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}
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if (k > 1)
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{
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return Linear(v[m], v[m - 1], m - f);
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}
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return Linear(v[i], v[(i + 1 > m) ? m : i + 1], f - i);
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};
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module.exports = LinearInterpolation;
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