Nice - I like it! I have some Heighway Dragon renderings that use different styles for left- vs. right-turns, resulting in a nice inside vs. outside distinction. Here's one of them: http://www.karzes.com/ghack14-1.gif For more examples, see: http://www.karzes.com/dragon.html They would probably be more dramatic if I shaded one side of the curve, but I'm too lazy. Tom Bill Gosper writes:
Looking to illustrate spacefilling by using continuously varying colors, with no tricky phases and sampling frequencies, I found gosper.org/blackdrag.png ​which looks nice all black yet shows the course of the spacefill, using only actual dyadic rationals from the Dragon recursion. The trick is to replace every triad of consecutive points by a triangle with those vertices. It might be tweakable into one of those inside|outside https://pictures.abebooks.com/isbn/9780262630221-us-300.jpg Minsky-Papert perceptron confusers. Not that gosper.org/mediandrag2.png isn't confusing enough. --rwg