CascadeStudio
pov2mesh
CascadeStudio | pov2mesh | |
---|---|---|
18 | 3 | |
959 | 26 | |
- | - | |
0.0 | 10.0 | |
10 months ago | over 7 years ago | |
JavaScript | POV-Ray SDL | |
MIT License | - |
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CascadeStudio
- Cascade Studio
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Gimp 2.99.18 Released: The Last Development Preview Before 3.0
OCCT is definitely difficult.
I am almost as far as you can get from an expert but:
For example the TNP issue derives from OCCT (or something in the stack close to it, I am not exactly sure) not really handling face naming at all.
So if you want to avoid topological naming issues (which is a hard problem in CAD), you apparently have to do some work to track before and after and reconstruct your face naming.
https://wiki.freecad.org/Topological_naming_problem
https://forum.freecad.org/viewtopic.php?t=27278
Then there are various fairly entrenched issues to do with filleting and chamfering. Basically, both these operations will fail (in FreeCAD at least, but it's OCCT at "fault") if a chamfer or fillet would completely consume an existing edge. (It also sometimes creates impossible objects when filleting, or used to).
Booleans can be slow.
And more generally, it seems if you track the FreeCAD project that OCCT can be inscrutable when things fail; error messages aren't the greatest etc.
The flip side of OpenCascade is that it seems to be highly portable and has for example been compiled to JS with Emscripten for this astonishing thing:
https://zalo.github.io/CascadeStudio/
It's a monumental open source project, for sure, and it's definitely not nothing that we have an open source CAD kernel; these are projects that perhaps have to extend beyond the working life of an individual developer if they are to be stable. And there are loads of projects built around it.
- Better OpenSCAD?
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Show HN: Dslcad a programming language and interpreter for building 3D models
If you haven't seen it you may want to check out https://github.com/zalo/CascadeStudio
From what I see, it is exposing the OpenCascade base commands directly, versus your completely new DSL, but you might be interested in a way to implement your DSL on top of such an interface such as this which takes out a lot of the extra work of having a rendering interface, exports, etc, maybe.
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Ask HN: If money was no object what software would you create?
It's nowhere near ready for primetime, but you should take a look at CascadeStudio (https://github.com/zalo/CascadeStudio)
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Fornjot – The world needs another CAD program
FreeCAD is GUI-based though, not code-first like Fornjot. A better comparison would be CadQuery (https://cadquery.readthedocs.io/en/latest/intro.html) or Cascade Studio (https://zalo.github.io/CascadeStudio/), both of which are code-first and based on the same CAD kernel as FreeCAD.
- Fornjot: A next-generation Code-CAD application
- CascadeStudio: A Full Live-Scripted CAD Kernel in the Browser
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Support for Javascript?
It is an actual example from CascadeStudio, but I haven't looked into it enough to know how what actually happens under the hood, but I assume the following:
- Playing with Mystery Curves (inspired by the whirlpool vase posted a couple days ago)
pov2mesh
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Show HN: Dslcad a programming language and interpreter for building 3D models
The link [0] literally says:
> #pov2mesh A Set of Macros in POV-Ray Language to Convert a POV-Ray to a Triangle Mesh
I never said it was a mesh editor or CAD tool or anything else except that it would need an internal representation of volumes and surfaces in a scene, and that the OP linked to a tool that generated a triangle mesh from this info.
[0] https://github.com/cyborg5/pov2mesh
What are some alternatives?
cadquery - A python parametric CAD scripting framework based on OCCT
MarksEnclosureHelper - OpenSCAD Hinged Box generator and toolkit
psml - Python library for OpenSCAD
gcodepreview - OpenSCAD library for moving a tool in lines and arcs so as to model how a part would be cut using G-Code.
OpenJSCAD.org - JSCAD is an open source set of modular, browser and command line tools for creating parametric 2D and 3D designs with JavaScript code. It provides a quick, precise and reproducible method for generating 3D models, and is especially useful for 3D printing applications.
fornjot - Early-stage b-rep CAD kernel, written in the Rust programming language.
Kind - A next-gen functional language [Moved to: https://github.com/Kindelia/Kind2]
ShapeScript - The ShapeScript 3D modeling app for macOS and iOS
truck - Truck is a Rust CAD Kernel.
dslcad - DSLCad is a programming language & interpreter for building 3D models.
curated-code-cad - A list of the various code-cad projects out there.
egui - egui: an easy-to-use immediate mode GUI in Rust that runs on both web and native