Some of my Postscript (the printer language) projects - some early, some less so. zut means pile of rubbish. There's lots to do with polysymmetry and fractals, and then some other stuff. Postscript is actually a really fun language for static graphics programming - I love its syntax, model of stack frames (you have to manually push a new local namespace dictionary to the stack). It's powerful - featuring programmatic features like for loops, while maintaining good drawing primitives and vector graphics. It's actually pretty good for fractals, but also polysymmetric tilings and more. Here are a couple of my favourites:
A recursive Penrose tiling (which will never form a repeating pattern):
A "sierpinski star". Similar to Sierpinski's triangle/gasket, except it must be mutually recursive in hexagon segments and triangle segments.
The Minkowski sausage fractal. Lesser known but quite pretty fractal, with a very nice fractal looking boundary.
Stars formed by choosing equidistant points around the circumference of a circle and drawing a star by "skipping" over some number of points for each line segment. Uses coprimality to produce a nice looking pattern - ie 9 points with a skip of 3 would just be a triangle so would be boring.
A few more that I really converted to svg to add here, but realised this readme was getting clunky. I moved them to a directory of SVGs (they should be viewable in browser): svgs. There are also pdf files, but they don't seem to render very well. They're there because they're a necessary intermediate stage to my SVG generation method - I first use ps2pdf, and then pdf2svg. It seems to be working quite well so it's good enough for me. I've tested that all of these work with my version of GhostScript - you should also be able to open them in Preview on MacOS or some kind of illustrator/graphics program. These are only a couple of my favourites - the decision making process was like being forced to choose between my own children. I tried to pick some varied projects showing different possible projects in Postscript, although really I like everything that isn't in zut that's here.