sdf VS sdfx

I used to like OpenSCAD for its simple approach but then I discovered SDF-based modelling with Python made possible with this neat library: [1]. This is perfect if you are a programmer that doesn't know anything about CAD-Software.

1.: https://github.com/fogleman/sdf

>these the the central core that understands BREP and implements the geometric operations.

I've seen people quote a good modern CAD kernal as a 100 man year project. It's probably not going to happen, maybe there's some avenue for government funding?

Alternatively Signed-Distance-Functions are pretty nice. They're not BREP, but they're a lot easier to implement, and it might be possible to shove them into a BREP-shaped hole.

Here's a signed-distance-function based CAD kernal written in a few thousand lines of python+numpy, that seems to be about as fast as openscad. Maybe faster. https://github.com/fogleman/sdf

Excellent. You might be interested in a Python library that I wrote for generating 3D meshes (STL files) from SDFs : https://github.com/fogleman/sdf

It just uses marching cubes for triangulation but the SDFs are all numpy'd and the SDF is evaluated in batches on multiple threads so it's relatively fast.

I used the SDF repo by Michael Fogleman. Check out his website, there's a ton of useful stuff on there. He contributes a lot to the open source community and has been mentioned in r/PlotterArt before.

Try out fogleman/sdf[1]. It is like OpenSCAD in many ways but the distance field model gives you offsets and fillets more easily.

[1] https://github.com/fogleman/sdf

https://github.com/fogleman/sdf this python project can create mesh from sdf

> https://github.com/fogleman/sdf

Holy crap, why have I not seen this before?!?!!? I was even planning to start coding something like this myself. This is awesome!

Go: https://github.com/deadsy/sdfx

Object Oriented Programming is a way to go to create CAD tool for school project, not golang (too hard for school task). If you really must, this was I want to try in one of my projects: https://github.com/deadsy/sdfx

Designed all of these parts* using Deadsy/SDFX, it was certainly interesting and I enjoyed working with it, getting visual artifacts off my model and keeping file sizes down is a bit tedious though.

I wrote this (in golang) to satisfy my need to generate STLs for 3d printing.

https://github.com/deadsy/sdfx

In general I like to write code to define objects, but there are some situations where a graphical editing UI would be nice. ie- Curve and polygon design.

You can sort of imagine a hybrid approach where you could crack open a mini editor to design a curve and then use it to generate code (table of numbers) which you could then extrude/sweep/loft or whatever.

github source

Nice to see sdfx [1] there, this project is impressive.

deadsy built some rather sophisticated models, be sure to check out the renderings in the github README!

https://github.com/deadsy/sdfx

Code: https://github.com/deadsy/sdfx

I had a similar question, and this is how I answered it (after a visit to openscad,,,) https://github.com/deadsy/sdfx