Hailperin, Chapter 4

Slides, Graphics, primitive operations

Note: You do not need the quilt file, but you do need to have concabs.plt
installed and this line

(require (lib "fungraph.ss" "concabs"))

in the definition pane of Dr. Racket.

> (line -1 0 1 0)
> (line 0 1 0 -1)
> (overlay (line -1 0 1 0)
           (line 0 1 0 -1))

Define c-curve and demo the following:

> (c-curve 0 -1/2 0 1/2 0)
> (c-curve 0 -1/2 0 1/2 1)
> (c-curve 0 -1/2 0 1/2 2)
> (c-curve 0 -1/2 0 1/2 3)
> (c-curve 0 -1/2 0 1/2 4)
> (resize-image (c-curve 0 -1/2 0 1/2 4) 256 256)
> (resize-image (c-curve 0 -1/2 0 1/2 10) 256 256)

Slide, C-Curve code, base case, induction case, Figure 4.10

Slide, Sierpinski's gasket - Exercise for the student