internal static RectangleF Transform(this RectangleF rectangle, Matrix matrix)
{
var transform = matrix.transform;
var x = rectangle.X;
var y = rectangle.Y;
rectangle.X = (float)(transform.xx * x + transform.xy * y + transform.x0);
rectangle.Y = (float)(transform.yx * x + transform.yy * y + transform.y0);
x = rectangle.Width;
y = rectangle.Height;
rectangle.Width = (float)(transform.xx * x + transform.xy * y + transform.x0);
rectangle.Height = (float)(transform.yx * x + transform.yy * y + transform.y0);
return new RectangleF (rectangle.Location, rectangle.Size);;
}
