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https://github.com/photonstorm/phaser
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10 lines
192 B
JavaScript
10 lines
192 B
JavaScript
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var MATH_CONST = require('../../math/const');
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var Angle = require('./Angle');
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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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