solvespace
Godot
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solvespace | Godot | |
---|---|---|
69 | 2,743 | |
3,005 | 82,940 | |
1.2% | 2.1% | |
7.0 | 10.0 | |
2 days ago | 5 days ago | |
C++ | C++ | |
GNU General Public License v3.0 only | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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solvespace
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Ask HN: What rabbit hole(s) did you dive into recently?
Can second this!
However, I would recommend https://solvespace.com! It hits a sweet spot between features vs complexity/learning effort.
- My favorite code comment/rant
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Why large companies and fast-moving startups are banning merge commits
We use rebase on solvespace, along with sensible squashing so most commits along master are pretty self contained. You can see the clean history here:
https://github.com/solvespace/solvespace/commits/master/
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A one line code change inside iOS made me waste 5 minutes
I changed a behavior to the "more standard" one because it felt obviously right. This was a 3 line change. But the was enough backlash right there in the pull request. So I spent a couple hours remembering how to add a configuration option to keep the old way for those guys:
https://github.com/solvespace/solvespace/pull/1425
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RattleCAD
> If you like Linkage, you might also like Solvespace.
No, I mean Brent Curry's Linkage[1] bicycle design software, not David Rector's Linkage Mechanism Designer and Simulator[2].
You should read Wikipedia article.[0]
N.B. About SolveSpace, as I'm its experienced user[youtube,patreon], I may say next: yes, it could be used for bike mockup, as any other CAD, but it still has a lot of limitations and even does not export correct STEP files yet[3], and in FreeCAD such STEP could fixed only partially.[video]
So, for serious 3D CAD work I highly recommend use FreeCAD (and LibreCAD for 2D CAD work) instead of SolveSpace, and use SolveSpace only as a helper tool like a calc or as a notepad for noting ideas.
About Linkage Mechanism Designer and Simulator, it is only useful for planar (2D) kinematics analyze, and if You are looking an alternative for it take a look on Pyslvs[4], that is in part based on SolveSpace's solver.
[0] https://en.wikipedia.org/wiki/rattleCAD#History
[1] https://bikechecker.com/
[2] https://blog.rectorsquid.com/linkage-mechanism-designer-and-...
[3] https://github.com/solvespace/solvespace/issues/206
[4] https://github.com/KmolYuan/Pyslvs-UI
[video] https://www.youtube.com/watch?v=F3LJMeqUDrU
[youtube] https://www.youtube.com/@appsoft
[patreon] https://patreon.com/app4soft
- SolveSpace has been ported to Qt
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Ask HN: What are some of the most elegant codebases in your favorite language?
C++ this file covers all the math for working with NURBS curves and surfaces:
https://github.com/solvespace/solvespace/blob/master/src/srf...
There is a lot more in other files - triangulation, booleans, creation - but the core math functions are there in very readable form.
- My favorite rant in a code comment (on OpenGL compatibility)
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The Great CPU Stagnation
>> Maybe somebody has statistical survey of how much of the existing deployed CPU core count is typically used?
My guess is very few cores are used on average. I did some testing with Solvespace to see which build options contributed most to performance:
https://github.com/solvespace/solvespace/issues/972
Obviously using OpenMP for multi-core was the big win. But what's not shown is that in typical usage (not the test I ran) if you're dragging some geometry around it will use all cores (in my case 4 cores / 8 threads) at about 50 percent utilization. That percentage probably drops as more cores are thrown at it due to Amdahl's Law. In other words, throwing double the cores at it will give a good boost to a lot of code that is already taking less than half the time (wall clock time, not CPU time).
We added OpenMP to a number of functions for significant performance gains. And in fact, any remining single-thread operation that gets the parallel treatment is likely to have a significant impact on overall performance since that is where most of the time is spent now. At this point we're more focused on features and bugs.
Algorithmic improvements are possible and I'd like to do those in the future, but they are much harder to do than sprinkling some #pragmas around critical loops. That will improve the scalability though, where multithreading really did not.
- Free, mac compatible, relatively easy CAD/CAM software?
Godot
- Web Game Engines and Libraries
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Name it Better (ideas for making more informative names)
Here's an example file tree from a part of the Godot game engine source code.
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Ask HN: Yo wants to build a game, I'm lost. What can I do?
Godot [1] is a very nice game engine. There's a game on Itch.io that teaches the scripting language it uses [2], and a ton of great tutorials on YouTube for beginners and experts alike.
[1]: https://godotengine.org/
- Show HN: GodotOS: A Fake Operating System Interface Made in the Godot Engine
- Unity Software cutting 25% of staff in 'company reset' continuation
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Show HN: Mutable.ai – Turn your codebase into a Wiki
The Bitcoin and Mastadon links don't seem to be working! (wiki not found)
Would love to see this for Godot (https://github.com/godotengine/godot). Maybe Maplibre too (https://github.com/maplibre/maplibre-native)!
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My thought on different engines
Godot Engine is a free and open-source game engine. The story started as an in-house engine of an Argentinian studio in 2007, and since 2014, it's been a community-driven project with a lot of contributors.
- How do "feature flags work"
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Duplicated Enemies all respond to a signal belonging to a different instance of that enemy.
I think this is the PR.
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no cell on microbe stage
Thrive is starting. Log output (due to buffering this is likely not in real time): Godot Engine v3.5.stable.mono.thrive.d2ad79a40 - https://godotengine.org OpenGL ES 3.0 Renderer: GeForce GT 710/PCIe/SSE2 Async. shader compilation: OFF
What are some alternatives?
cadquery - A python parametric CAD scripting framework based on OCCT
bevy - A refreshingly simple data-driven game engine built in Rust
Autodesk-Fusion-360-for-Linux - This is a project, where I give you a way to use Autodesk Fusion 360 on Linux!
o3de - Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.
blender-cad-tools - a collection of Blender addons to make CAD design with Blender even more enjoyable
Cocos2d - Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.
FreeCAD_assembly3 - Experimental attempt for the next generation assembly workbench for FreeCAD
GDevelop - :video_game: Open-source, cross-platform game engine designed to be used by everyone.
LibreCAD - LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.
Panda3D - Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU
DesignSpark-Mechanical-for-Linux
ursina - A game engine powered by python and panda3d.