3D JShape Files

Yes, 3D support in Jshapes are planned and have been for some time. That work is currently blocked behind our new B-Rep engine which we've been working on heavily (every day) for the better part of this year. The current JC3 releases are using a commercially available b-rep engine/library. It's buggy and we've done way more work that we would have preferred to get it as good as it currently is which has included a bunch of work on our own fork of it. Despite that, we've hit just about every performance wall imaginable and it's still not anywhere close to where we want it to be. Our new engine is currently benchmarking 20x-50x faster on the same hardware against a test harness of over 1000 complex 3D models and assemblies and if I had to put a number on how far along it is, I'd say around 85% complete. Once that's ready to release and the old b-rep engine is yanked entirely then 3D Jshapes fall out for nearly free. That implementation will take on some commonalities with OpenSCAD in the way the models are defined in the Jshape itself. I'm hoping that our new b-rep engine will land before the end of the year and I'll leave this FR open until then.