protected RectangleF bounds()
{
float ulX = Center.X - dimX / 2.0f;
float ulY = Center.Y - dimY / 2.0f;
Matrix m = new Matrix();
RectangleF rec = new RectangleF(ulX, ulY, dimX, dimY);
m.RotateAt(-perspective, GameApp.RectangleFCentre(rec));
return(RotationUtilities.TransformRectangle(rec, m));
}