phaser/src/math/Rotate.js
2018-03-20 16:06:30 +01:00

29 lines
683 B
JavaScript

/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2018 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* [description]
*
* @function Phaser.Math.Rotate
* @since 3.0.0
*
* @param {(Phaser.Geom.Point|object)} point - [description]
* @param {number} angle - [description]
*
* @return {Phaser.Geom.Point} [description]
*/
var Rotate = function (point, angle)
{
var x = point.x;
var y = point.y;
point.x = (x * Math.cos(angle)) - (y * Math.sin(angle));
point.y = (x * Math.sin(angle)) + (y * Math.cos(angle));
return point;
};
module.exports = Rotate;