How far along is Fornjot?

[MRiabov]

I'm an AI developer and I need a B-rep kernel. For the purpose of speed of my application, it better be GPU-native, but it can wait.

I don't need sketches, but I need:

• CSG boolean subtraction, filets, changers and all the basic operations but w/o sketches,
• Solid drafts,
• Export to STEP,
• At least basic assembly - I don't need constraints, only an ability to place objects together.

I personally started writing my own B-rep kernel for it, with useful tweaks for AI comprehension (all models also have an implicit version, which AI understands easily), but after 2 days I don't know if having B-rep on GPU would help that much. OpenCASCADE is simply buggy.

So, would Fornjot be usable?

[hannobraun]

Hey @MRiabov,

I don't think you can use Fornjot. Literally none of the items you mention are currently implemented. At the speed things are going, it would take a long time to implement them.

I strongly recommend against doing your own b-rep kernel, if you plan to do anything else. If there's an easy enough way to do it, I think it has yet to be discovered.

If you're looking for an open source kernel, I suspect that you can't do better than Open CASCADE. But you might want to give Truck a try: https://github.com/ricosjp/truck

Best of luck with your project!

[voxpelli]

And since @hannobraun is too humble to mention it himself I’m going to say it:

Also consider sponsoring @hannobraun to help him continue to work on this project so that it can reach all the goals that eg you need. Only that way will we arrive in a better state :) https://github.com/sponsors/hannobraun

(My company @yikesable is sponsoring)

[hannobraun]

Thank you, @voxpelli 😄