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https://github.com/photonstorm/phaser
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31 lines
906 B
JavaScript
31 lines
906 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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* Compute a random four-dimensional vector.
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*
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* @function Phaser.Math.RandomXYZW
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* @since 3.0.0
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*
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* @param {Phaser.Math.Vector4} vec4 - The Vector to compute random values for.
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* @param {number} [scale=1] - The scale of the random values.
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*
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* @return {Phaser.Math.Vector4} The given Vector.
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*/
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var RandomXYZW = function (vec4, scale)
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{
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if (scale === undefined) { scale = 1; }
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// TODO: Not spherical; should fix this for more uniform distribution
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vec4.x = (Math.random() * 2 - 1) * scale;
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vec4.y = (Math.random() * 2 - 1) * scale;
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vec4.z = (Math.random() * 2 - 1) * scale;
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vec4.w = (Math.random() * 2 - 1) * scale;
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return vec4;
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};
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module.exports = RandomXYZW;
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