General Pivot Point Scaling

A transformation sequence for scaling an object with respect to a specified fixed position using the scaling matrix

	Original Position of Object and Fixed Point
	Translation of Object so that Fixed Point is at Origin
	Scale Object with Respect to Origin
	Translation of Object so that Fixed Point is Returned to original Position

P' = T(x_r, y_r) ^. S ^. T(-x_r, -y_r) ^. P