A Commodore 64 BASIC program taken from the book ‘Spiele mit Computer-Grafik für Phantasie und Logik’, a 1984 generative art book by Dr. Norbert Treitz.
This program, originally written in the Simons' BASIC extension of C64 BASIC, has been re-created in modern p5js, using the same algorithms and sticking closely to the given methods from 1984.
The new version can be found at Open Processing here: https://openprocessing.org/sketch/1623582