;;; Procedure:
;;;   complicate
;;; Parameters:
;;;   x, a real number in the range 0..1
;;;   y, a real number in the range 0..1
;;; Purpose:
;;;   Represent (x,y) as a complex number, taking into account
;;;   settings that describe that conversion.
;;; Produces:
;;;   c, a complex number
;;; Preconditions:
;;;   [No additional]
;;; Postconditions:
;;;   [Too complex to state]
(define complicate
  (lambda (x y)
    (+ (+ HOFFSET (* HSCALE x))
       (* 0+i (+ VOFFSET (* VSCALE y))))))