Oh, NeXT Cube and custom fills? That's pretty hardcore. Did you find programming in PostScript more intuitive compared to other languages, especially for graphical stuff?

The Cube was a gift, and the PS work didn't go that far.

I found PS pretty inscrutable, esp. the function-filled variant used in Virtuoso, but did manage to get dimension lines coded up (which promptly ran into precision problems which I eventually gave up on).

OpenSCAD is a lot more approachable, and METAPOST was easy to pick up and make use of:

http://ftp.tug.org/TUGboat/tb40-2/tb125adams-3d.pdf

Still working through this at:

https://willadams.gitbook.io/design-into-3d/3d-project

and mostly using visual tools (which arguably is limiting me) https://www.blockscad3d.com/editor/ and https://github.com/derkork/openscad-graph-editor and of course, had to throw: http://pythonscad.org/ into the mix. Still a bit miffed that Nodebox and Processing or maker.js weren't a good fit.

Even the official reference book ("red book" or PLRM, https://www.adobe.com/jp/print/postscript/pdfs/PLRM.pdf) is readable and very well done.