truck
CascadeStudio
Our great sponsors
truck | CascadeStudio | |
---|---|---|
11 | 18 | |
533 | 944 | |
5.5% | - | |
9.2 | 0.0 | |
about 20 hours ago | 9 months ago | |
Rust | JavaScript | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
truck
-
Text-to-CAD: Risks and Opportunities
I agree 100%.
Truck[1] and Fornjot[2] are recent attempts in the Rust space, both are WIP.
But both seem to be going the traditional way. I.e. B-Rep that can be converted to (trimmed) NURBS.
I think if one wanted to incorporate the last 50 years of computer science, particularly computer graphics, one needed to broaden the feature set considerably.
You need support for precision subdivision surface modeling with variable radius creases (either via reverse subdivision where you make sure the limit surface pass through given constraints or using an interpolating subivision scheme that but has the same perks as e.g. Catmull-Clark).
Then you need to have SDF modeling ofc.
Possibly point based representations. If only as inputs.
And traditional B-Rep.
Finally, the kernel should be able to go back and forth lossless between these representations wherever possible.
And everything must be node-based, like e.g. Houdini. Completely non-destructive.
-
Truck: CAD Kernel in Rust
I think you confuse the book/tutorial with the documentation on docs.rs.
My impression is that the former is very much a work in progress. I never looked at it until now.
The latter (and the examples in the resp. crates) is what you want to look at to see the kernel being used. E.g. https://github.com/ricosjp/truck/blob/master/truck-modeling/...
The main README has links to all the documentation of the crates.
-
CAD Sketcher, free and open-source project bringing CAD like tools to Blender3d
I think some interesting developments are made in that sector in the form of https://github.com/hannobraun/Fornjot and https://github.com/ricosjp/truck. Let's see whether one of those will actually get anywhere near a usable level. Fornjot in particular is shaping up really well.
There are two Rust projects working on parametric kernels I'm aware of.
The first one, Truck[1] seems to have a company behind it, Ricos Ltd, that look like they to know what they're doing[2]. The tweet shows their product using functionality from Truck (the frontend is not OSS AFAIK).
Fornjot is an ambitious project IMHO. Their kernel is in a separate crate[3].
As for OSS code that could be a good base to either use (or port to something like Rust) for someone to write their own kernel is Ayam [4], the oldest OSS 3D NURBS modeler that is still being developed.
[1] https://github.com/ricosjp/truck
[2] https://twitter.com/RICOS_ltd/status/1550390552482693120
-
Fornjot (code-first CAD in Rust) - Weekly Dev Log - 2022-W21
I've been following your project with interest and was wondering if you were familiar with Truck. Its another project implementing a CAD kernel in Rust.
-
Fornjot – The world needs another CAD program
I will definitely keep reading and learning, as well as gaining practical implementation experience. We'll have to see how that goes, and what the solution will end up being.
> Another direction you could take is to define just the API, and use the opencascade kernel (like FreeCAD) until the rest of your code is ready.
A CAD kernel is the central dependency for any CAD program, and I feel that it would be wrong to just use one and accept its limitations. I need to be able to take ownership, to work on it directly. OpenCASCADE is a huge pile of C++ code, which is the opposite of all that. (Not saying it's wrong to use in general, just that I'm the wrong guy to work on a huge pile of C++ code.)
I've considered using Truck[1], but decided not to do that for now. I really want to see what I can come up with. If that doesn't work out, at least I'll be in a much better decision to decide what other option would be best.
This one seems furthest along:
https://github.com/ricosjp/truck
And it has a long way to go. They are tackling some hard problems like dealing with STEP format already.
There is also a geometric constraint solver written in Rust. He's moved to (I think gitlab) but here's the old repo:
- Fornjot: A next-generation Code-CAD application
-
Hey Rustaceans! Got an easy question? Ask here (3/2022)!
For a specific example: I am interested in working with 3D objects using Rust (maybe this is too ambitious for a newbie!) so I found a CAD kernel crate called truck which seems to be crate built of smaller crates and implementations of other libraries. How would you go about finding the most relevant info and where to start? Should I start by understanding all the smaller parts such as the gui/gpu rendering modules, or is that irrelevant and I can focus on figuring out the top level?
CascadeStudio
-
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?
-
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.
-
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)
- Fornjot: A next-generation Code-CAD application
-
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:
- Cascade Studio: A Full Live-Scripted CAD Kernel and IDE in the Browser
-
To design a new mount for the Chimera 2in2out for the Ender 3, I rebuilt the carriage assembly in OpenScad and partyl QCad.
👍 A good sketching mechanism is in my opinion one thing that's lacking in all of the code-cad projects. The closest they have is polygons with a few extra features (they might include filleting corners https://github.com/zalo/CascadeStudio/discussions/50).
What are some alternatives?
cadquery - A python parametric CAD scripting framework based on OCCT
psml - Python library for OpenSCAD
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.
Kind - A next-gen functional language [Moved to: https://github.com/Kindelia/Kind2]
gluon - A static, type inferred and embeddable language written in Rust.
fornjot - Early-stage b-rep CAD kernel, written in the Rust programming language.
BOSL - The Belfry OpenScad Library - A library of tools, shapes, and helpers to make OpenScad easier to use.
openscad - OpenSCAD - The Programmers Solid 3D CAD Modeller
curated-code-cad - A list of the various code-cad projects out there.
arcade - A rust CAD engine (NURBS kernel)
build123d - A python CAD programming library
dyon - A rusty dynamically typed scripting language