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GenCAD

gencad.github.io

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Re: GenCAD

#21

Post by simpleintheory »

vpzom wrote: post #16
simpleintheory wrote: post #11

Is this Google-affiliated? The heading font is Product/Google Sans which IIRC only Alphabet is allowed to use and the entire webpage seems to be Google-style but neither of the two named researchers seem to be employed by Google?

Per https://fonts.google.com/specimen/Google+Sans/license "These fonts are licensed under the Open Font License. You can use them in your products & projects – print or digital, commercial or otherwise."

Yeah, TIL, turns out they changed the license: it used to be under https://fonts.google.com/license/productsans

Re: GenCAD

#23

Post by geuis »

To the author if they happen to see this. Please kill the auto playing video. If someone is listening to something else on their phone this always takes over and interrupts.

Re: GenCAD

#24

Post by ecto »

ecto wrote: post #22

Readers may also enjoy my open source Rust BRep CAD kernel https://github.com/ecto/vcad or the hosted version at https://vcad.io . I also wrote a bit about what goes into CAD apps! https://campedersen.com/tessellation

(forgot to mention, it's wired up to Claude so you can vibe CAD, like OP but with a few more steps - I'd like to train a similar model soon! I also wrote about my first stab at this https://campedersen.com/cad0)

Re: GenCAD

#25

Post by alexgoodhart »

cjtrowbridge wrote: post #14

This has been easy with OpenSCAD for a long time. I have made lots of cool, complex models this way. I built a repo of the prompts I use to show the llm how to do this and it includes many of the models I've created this way... https://github.com/cjtrowbridge/vibe-modeling

What is the inference overhead on this

Re: GenCAD

#26

Post by achllle »

I wanted to see how well it performed on real pictures of parts or hand-drawn drawings, but when I tried setting up the docker image, immediately ran into all kinds of dependencies not being installed. The examples make me suspect it doesn't work well beyond images that were generated from CAD in the first place.

Re: GenCAD

#27

Post by martinpw »

plumeria wrote: post #5
SchemaLoad wrote: post #4

Earlier quoted context omitted.

How does it not matter? Every CAD program is not going to have exactly the same interface and commands. I doubt for example this will for example generate and OpenSCAD text file.

It could be used as pseudo-code for LLMs to produce specific CAD commands?

It will still be application dependent.

Code to compute fillets and blends gets incredibly complex when multiple surfaces are involved. And when surfaces are barely intersecting, or almost coincident, all bets are off what the command will do - very much depends on the geometry kernel and the tolerances it uses whether it decides the surfaces even intersect. And if it decides they don't intersect, all downstream commands will fail. Handling tolerances is one of the hardest aspects of CAD. (It's no coincidence that most open source CAD applications always demo with the same relatively basic types of models - they just can't do truly complex CAD.)

So a simple set of operations - cube, sphere, intersect - sure that will work anywhere and will be portable across applications and makes a nice simple demo. But once you start doing any serious CAD modeling the result is kernel dependent. That's why portable CAD formats like STEP do not preserve the commands used to generate the results. And why native CAD application formats do preserve the command history but are not portable across applications.

Re: GenCAD

#28

Post by Riany »

the idea is good, but the examples still feel like a distance to handle real constraints and dimensions

Re: GenCAD

#29

Post by atoav »

achllle wrote: post #26

I wanted to see how well it performed on real pictures of parts or hand-drawn drawings, but when I tried setting up the docker image, immediately ran into all kinds of dependencies not being installed. The examples make me suspect it doesn't work well beyond images that were generated from CAD in the first place.

If only there was some kind of container that allowed you to bundle all your dependencies together with your software.

Re: GenCAD

#30

Post by iamgopal »

oasisaimlessly wrote: post #20
cjtrowbridge wrote: post #14

This has been easy with OpenSCAD for a long time. I have made lots of cool, complex models this way. I built a repo of the prompts I use to show the llm how to do this and it includes many of the models I've created this way... https://github.com/cjtrowbridge/vibe-modeling

OpenSCAD has almost zero crossover with B-rep modelling ('true' CAD, what this apparently is), though.

how hard it is ? with AI prevalent, how long ? any pointers to start from ?
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