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Re:Show HN: Chili3d – A open-source, browser-based 3D CAD ap... by fsloth on Tuesday June 10, 2025 @12:55PM (#44238972)
Not your main question but -

” very old-school native programs that either are a loosely collected group of tools that allow you to manipulate files and pass them around”

Opencascade is a C++ library and manages it’s state in single process. Examples: https://dev.opencascade.org/doc/overview/html/samples.html

Re:Show HN: Chili3d – A open-source, browser-based 3D CAD ap... by zokier on Tuesday June 10, 2025 @02:45PM (#44239992)
I think parent was referring to BRL-CAD, which is very much feels like a collection of cli tools ducktaped together.
Re:Show HN: Chili3d – A open-source, browser-based 3D CAD ap... by bee_rider on Tuesday June 10, 2025 @03:00PM (#44240158)
I was just commenting on my general impression of the sorts of tools I saw other folks in the lab using, or that I had to use in my classes. I’m more of a programming guy anyway, so it is probably an issue of me being an uninformed neighbor (all of the responses seem to indicate that I’m wrong mostly, which is definitely not surprising).