mirror of
https://github.com/photonstorm/phaser
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30 lines
876 B
JavaScript
30 lines
876 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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/**
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* Smoothly interpolate between two values.
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*
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* Computes a smooth step interpolation between `min` and `max` by `x`.
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*
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* Produces an even smoother interpolation than {@link Phaser.Math.SmoothStep}.
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*
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* @function Phaser.Math.SmootherStep
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* @since 3.0.0
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*
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* @param {number} x - The percentage of interpolation, between 0 and 1.
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* @param {number} min - The minimum value.
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* @param {number} max - The maximum value.
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*
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* @return {number} The smoothly interpolated value.
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*/
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var SmootherStep = function (x, min, max)
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{
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x = Math.max(0, Math.min(1, (x - min) / (max - min)));
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return x * x * x * (x * (x * 6 - 15) + 10);
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};
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module.exports = SmootherStep;
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