public FS_Rectangle(double length, double width, FS_Vector3 centerPosition)
 {
     Length         = length;
     Width          = width;
     CenterPosition = centerPosition;
 }
 public bool ValuesEqual(FS_Vector3 other, double delta)
 {
     return(Math.Abs(other.X - X) < delta &&
            Math.Abs(other.Y - Y) < delta &&
            Math.Abs(other.Z - Z) < delta);
 }