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https://github.com/photonstorm/phaser
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14 lines
364 B
JavaScript
14 lines
364 B
JavaScript
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var Angle = require('./Angle');
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var NormalAngle = require('./NormalAngle');
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/**
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* Returns the reflected angle between two lines.
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* This is the outgoing angle based on the angle of Line 1 and the normalAngle of Line 2.
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*/
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var ReflectAngle = function (lineA, lineB)
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{
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return (2 * NormalAngle(lineB) - Math.PI - Angle(lineA));
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};
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module.exports = ReflectAngle;
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