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jczimm/rotate_point.js

Created May 13, 2014 18:08
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rotate_point.js
function rotate_point(pointX, pointY, originX, originY, angle) {
angle = angle * Math.PI / 180.0;
return [
Math.cos(angle) * (pointX-originX) - Math.sin(angle) * (pointY-originY) + originX,
Math.sin(angle) * (pointX-originX) + Math.cos(angle) * (pointY-originY) + originY
];
}
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