var Vector2 = require('./Vector2'); 
var TransformXY = function (x, y, positionX, positionY, rotation, scaleX, scaleY, output){ 
if (output === undefined) { 
output = new Vector2(); 
} 
var radianSin = Math.sin(rotation); 
var radianCos = Math.cos(rotation); 
var a = radianCos * scaleX; 
var b = radianSin * scaleX; 
var c = - radianSin * scaleY; 
var d = radianCos * scaleY; 
var id = 1 / ((a * d) + (c * - b)); 
output.x = (d * id * x) + (- c * id * y) + (((positionY * c) - (positionX * d)) * id); 
output.y = (a * id * y) + (- b * id * x) + (((- positionY * a) + (positionX * b)) * id); 
return output; 
} 
; 
module.exports = TransformXY;