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conradoqg/rotate.js

Created April 1, 2017 14:32
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rotate.js
var newX = Math.cos(angle) * (this.x - origin.x) - Math.sin(angle) * (this.y - origin.y) + origin.x;
var newY = Math.sin(angle) * (this.x - origin.x) + Math.cos(angle) * (this.y - origin.y) + origin.y;
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