private Vector ScaleVectorFromLocation(System.Drawing.Rectangle workingArea_in, System.Drawing.Point AbsoluteLocation_in)
{
Matrix scale = new Matrix();
scale.SetIdentity();
scale.Scale(1.0 / workingArea_in.Size.Width, 1.0 / workingArea_in.Size.Height);
return(scale.Transform(AbsoluteLocation_in.ToVector() - workingArea_in.Location.ToVector()));
}