libfive VS GSharp

Guile/Scheme: https://libfive.com/

You probably have already seen this, but I would take a look at libfive for inspiration

https://libfive.com/

You can find a few algorithms online (such as csg.js and libfive), but most of them are either not robust or fast enough for real-time graphics.

No; Bauble doesn't know how to "rasterize" SDFs into meshes; it only knows how to raymarch them. It's theoretically possible, but it's a pretty complex problem that would take me much too long to figure out and implement. So Bauble is relegated to just making pretty pictures for now. If you want to produce meshes using SDFs, check out https://libfive.com/

This is a mid-point in Matt Keeter's research.

Start at:

http://mattkeeter.com/research/thesis.pdf

then see:

http://www.mattkeeter.com/projects/kokopelli/

then Antimony (see the article at: http://hackaday.com/2015/05/29/otherworldy-cad-software-hail... ), then the current effort:

https://github.com/libfive/libfive

(and also see: https://www.gitlab.com/kavalogic-inc/tovero "a binding of Libfive to Common Lisp, including a standalone REPL-based viewer"[https://github.com/Irev-Dev/curated-code-cad] can be integrated with https://www.gitlab.com/kavalogic-inc/clive

Currently I'm using OpenSCAD (w/ BlockSCAD as a front-end: https://www.blockscad3d.com because I prefer a sort of visual representation), but have been stymied by the lack of file I/O (I want to write out G-code).

Still looking for a 3D modeling tool which is:

- a node or block editor

Directly programming in G-code is a non-starter given that Grbl doesn't have loops or branching or variables, and I can't find a good example file for: https://github.com/NRSoft/GSharp

For G-code note that mostly these days it's made using CAM applications. A further consideration is that hobbyist firmwares usually forgo variables and loops and branching (but see: https://github.com/NRSoft/GSharp --- I believe that's integrated into bCNC).

A nice tool for programming in 3D G-code might be workable --- unfortunately Toolpath Language in CAMotics is JavaScript which I don't do well w/ and SketchNC crashes on my machine: http://www.ncplot.com/sketchnc/sketchnc.htm (and is in beta and not ready for production) --- using raw G-code gets pretty unwieldy, and most of the tools for it are expensive, and the controller on my machine doesn't support looping and variables, so it would be necessary to use a pre-processor such as: https://github.com/NRSoft/GSharp (and I can't find a 3D previewer which directly supports that).

I'd suggest a good previewer: https://wiki.shapeoko.com/index.php/Previewing_G-Code and if you find one which doesn't support loops and variables you can use GSharp as a pre-processor: https://github.com/nrsoft/gsharp

If you want to do 3D parts which are suited to the Nomad's flip jig, and doing CAM in MeshCAM, the Nomad 3 should be a slam dunk --- if you wish to approach work in some other way it should still be workable, so long as you don't secretly want to be a manual machinist or to hand-code G-Code w/ variables and loops (though there is a front-end for doing that: https://github.com/NRSoft/GSharp )