Parametic Reutersvärd Illusion Generator

This OpenSCAD script can generate variations on Oscar Reutersvärd's 1934 optical illusion. My approach was inspired by a picture of Artur Tchoukanov's model that I saw in the news (which in turn was inspired by Ulrich Schwanitz). Unfortunately, the news article didn't include the math behind the illusion's construction (they so rarely do!), so I had to rederive everything from scratch.

Fortunately it took only a few minutes of basic geometry. This program demonstrates the math behind the