solvespace
FreeCAD
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solvespace | FreeCAD | |
---|---|---|
69 | 42 | |
3,005 | 714 | |
1.2% | - | |
7.0 | 0.0 | |
8 days ago | 3 days ago | |
C++ | C++ | |
GNU General Public License v3.0 only | GNU General Public License v3.0 or later |
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?
FreeCAD
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Linux Software: a curated list of Linux software
Nice! I'd add FreeCAD, and also the RealThunder fork https://github.com/realthunder/FreeCAD which adds enhancement(seems to be getting slowly merged to mainline).
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Ask HN: What are some unpopular technologies you wish people knew more about?
Lithium Titanate batteries. Nothing else is lightweight, safe, currently available, and lasts 20000 cycles.
ESPHome. It's a framework for declaratively building firmware for microcontrollers, based on rules like "This pin is an input with debouncing, when it changes, toggle this".
Contributing to them has probably been the most fun I've had programming in years.
We just need power management, and a C++ implementation of the Native API client. It's so close to being able to replace most of what I'd normally code by hand in Arduino.
https://esphome.io/
RealThunder's fork of FreeCAD: https://github.com/realthunder/FreeCAD
They fix so many issues. Linear patterns can duplicate other linear patterns!
Vorta: It's the best backup technology I've seen. Just an easy guided GUI for Borg, which gives you deduplication. I just wish they let you deduplicate across multiple repositories somehow.
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Dune 3D – an open source parametric 3D CAD app bassed on OCCT
JFTR, FCStd-files produced by RealThunder's LinkStage[0] (fork of FreeCAD) is not fully backward compatible with an official FreeCAD app, and wise versa.
So, if you are planning to use LinkStage app for some large project, be ready to use only one app for the whole project and be ready to lost in whole or in part compatibility with the users of an official FreeCAD.
[0] https://github.com/realthunder/FreeCAD
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RealThunder Snap channels
edge is where all the exciting new features got released. It contains the latest commit from the FreeCAD Link Branch (https://github.com/realthunder/FreeCAD). Unlike the convention, here, the user is encouraged to try the edge release, to help improve all new features so that they can one day land in upstream FreeCAD.
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Github version with Midnight UI?
I downloaded this latest version 2023.01.31 from Github but i have no idea how to install it and if it is the right version that will work with Midnigh GUI.
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BIM Workbench has no models in the Column tool?
My setup I'm using RealThunders 2023.05.21 release
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"One transformed shape does not intersect support" when Mirrored
Alternative solution is to use Realthunder's build. It doesn't have that limitation in addition to a whole bunch of other QoL additions.
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Link3/Realthunder MacOS Mojave
As for your question, better to open a ticket on realthunder's Link repo: https://github.com/realthunder/FreeCAD/issues
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Just finished an Infinity cube remix (needed to print a smaller one and gaps can't be scaled). I created one block and one link using a spreadsheet and partdesign. I then cloned/mirrored and manually placed the rest of the blocks. Is there a better way?
I don't know for regular FC, but Realthunders Branch allows multiple solids in a PartDesign body, so with that one, you could use Multitransform to create a Mirror and linear pattern transformation (probably before adding the grooves for the links)
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Looking for a companion to freecad to generate fillets
try realthunders branch
What are some alternatives?
cadquery - A python parametric CAD scripting framework based on OCCT
FreeCAD_assembly3 - Experimental attempt for the next generation assembly workbench for FreeCAD
Autodesk-Fusion-360-for-Linux - This is a project, where I give you a way to use Autodesk Fusion 360 on Linux!
blender-cad-tools - a collection of Blender addons to make CAD design with Blender even more enjoyable
freecad.trails - Trails is the Transportation Engineering workbench for FreeCAD
freecad-steamdeck-config - Configuration files to run FreeCAD on Steam Deck
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.
Macad3D - Free and OpenSource 3D Construction Tool
DesignSpark-Mechanical-for-Linux
F3D - Fast and minimalist 3D viewer.