solvespace
sciter
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solvespace | sciter | |
---|---|---|
69 | 85 | |
3,005 | 2,562 | |
1.2% | 0.2% | |
7.0 | 0.0 | |
8 days ago | 12 months ago | |
C++ | C++ | |
GNU General Public License v3.0 only | - |
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.
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?
sciter
- Show HN: Open Source TailwindCSS UI Components
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Show HN: Dropflow, a CSS layout engine for node or <canvas>
> wondering if css and svg could be used as abstraction over graphics and UI libraries
There's another project called Sciter that uses CSS to target native graphics libraries: https://sciter.com
> I wonder how hard it was to implement css. I've heard it can be pretty complex.
It was hard, but the biggest barrier is the obscurity of the knowledge.
Text layout is the hardest, because working with glyphs and iterating them in reverse for RTL is brain-breaking. And line wrapping gets really complicated. It's also the most obscure because nobody has written down everything you need to know in one place. After I finished block layout early on, I had to stop for a couple of years (only working a few hours a week though) and learn all of the ins, outs, dos, and don'ts around shaping and itemizing text. A lot of that I learned by reading Pango's [1] source code, and a lot I pieced together from Google searches.
But other than that, the W3C specifications cover almost everything. The CSS2 standard [2] is one of the most beautiful things I've ever read. It's internally consistent, concise, and obviously the result of years of deliberation, trial and error. (CSS3 is great, but CSS2 is the bedrock for everything).
[1] https://gitlab.gnome.org/GNOME/pango/
- Ask HN: Fastest cross-platform GUI stack/strategy
- Bringing Back Horizontal Rules in HTML Select Elements
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Immediate Mode GUI Programming
otherwise, if we have only retained mode as in browsers, we will need to modify the DOM heavily and create temporary elements for handles.
[1] https://sciter.com
- This year in Servo: over 1000 pull requests and beyond
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Rusty revenant Servo returns to render once more
I've still never used it but I've long been curious about Sciter:
https://sciter.com
- Ode to the M1
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So you want to write a GUI framework (2021)
These bullet points are exactly what I did in Sciter (https://sciter.com)
- Windowing
-- Tabs
-- Menus
-- Painting
-- Animation
-- Text
-The compositor
-Handling input
-- Pointer input
-- Keyboard input
- Accessibility
- Internationalization and localization
- Cross-platform APIs
- The web view
- Native look and feel
On top of that DOM and CSS implementations to achieve declarative UI. And JS as a languuage behind UI - declarative in some sense way of defining UI behavior.
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Servo, the parallel browser engine written in Rust
I'm not sure if it can support all the libraries but yes it can be used to make desktop apps. Theres also Sciter.
https://sciter.com/
What are some alternatives?
cadquery - A python parametric CAD scripting framework based on OCCT
webview - Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).
Autodesk-Fusion-360-for-Linux - This is a project, where I give you a way to use Autodesk Fusion 360 on Linux!
qt - Qt binding for Go (Golang) with support for Windows / macOS / Linux / FreeBSD / Android / iOS / Sailfish OS / Raspberry Pi / AsteroidOS / Ubuntu Touch / JavaScript / WebAssembly
blender-cad-tools - a collection of Blender addons to make CAD design with Blender even more enjoyable
tauri - Build smaller, faster, and more secure desktop applications with a web frontend.
FreeCAD_assembly3 - Experimental attempt for the next generation assembly workbench for FreeCAD
flexboard - React component library for re-sizable sidebars
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.
RmlUi - RmlUi - The HTML/CSS User Interface library evolved
DesignSpark-Mechanical-for-Linux
NanoGUI - Minimalistic GUI library for OpenGL