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https://github.com/photonstorm/phaser
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25 lines
572 B
JavaScript
25 lines
572 B
JavaScript
/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2019 Photon Storm Ltd.
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* @license {@link https://opensource.org/licenses/MIT|MIT License}
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*/
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var MATH_CONST = require('../../math/const');
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var Angle = require('./Angle');
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/**
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* [description]
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*
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* @function Phaser.Geom.Line.NormalX
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* @since 3.0.0
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*
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* @param {Phaser.Geom.Line} line - The Line object to get the normal value from.
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*
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* @return {number} [description]
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*/
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var NormalX = function (line)
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{
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return Math.cos(Angle(line) - MATH_CONST.TAU);
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};
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module.exports = NormalX;
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