curated-code-cad VS tovero

> I would love to see a successor to OpenSCAD

There is quite a few "code" CAD's around https://github.com/Irev-Dev/curated-code-cad. Cadquery has contraints but isn't really a DSL.

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

From 2018 through sometime 2020 there seems to have existed two projects surrounding 3D modelling in CL, Tovero as libfive bindings and Clive as some sort of scene graph with a 3D GUI as per this description from a random git commit I found:

Checkout this resource for a whole host of different options (besides FreeCAD) https://github.com/Irev-Dev/curated-code-cad

I tried using python scripting with FreeCad's 2d constraints mechanisms, which I had high hopes for but found it to be too difficult. I did a decent write up about it here: https://github.com/Irev-Dev/curated-code-cad/pull/8

I forgot to add, at the time in 2014 I was working on this project

https://news.ycombinator.com/item?id=32491982

which lead to this one:

https://github.com/JMC-design/tovero

As I was taking a break from writing that "wall of text" last night, I finished my "Homer's Donut" shape, a 3D torus with a 0 - 360 degree arc to connect pipe-like shapes. My pipe-routing code is almost finished as of this morning.

My parents also taught me to "pick myself up, dust myself off, and start all over again." Peter Tosh too. So I guess another trite quote, "It's hard to innovate when you keep receiving 'being hit over the head' lessons."

> It looks like your e-mail was the victim of my paternity leave

10 years is generous paternity leave. :) Seriously though, no hard feelings, separating the wheat from the free software chaff takes time--ask me how I know.

> interactive editor like mged with lisp wrapping BRL-CAD's libged editing library

That interests me!

IME, I have found S-expressions to be an elegant, succinct way of expressing geometric models (especially in the F-rep domain):

https://github.com/JMC-design/tovero/blob/master/examples/ro...

I wrote a referencing counting C++ reader/writer for S-expression models like that directly into Open Inventor, in place of the IV (VRML) format, avoiding the use of CL.

Emacs has a C FFI, IIRC, so it should be possible to develop a S-exp formatted BRL-CAD model in elisp, with the right C shims--giving a live-coding, REPL experience for building BRL-CAD models.

Thanks for your work on BRL-CAD!