FreeCAD_assembly3
solvespace
FreeCAD_assembly3 | solvespace | |
---|---|---|
74 | 69 | |
864 | 3,008 | |
- | 0.8% | |
4.4 | 7.2 | |
2 months ago | 14 days ago | |
Python | C++ | |
GNU General Public License v3.0 only | 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.
FreeCAD_assembly3
-
Kinematic Coupling (Maxwell) Assembly with FreeCAD
If the general python API isn't enough the assembly3 docs have an interesting example which might give you some ideas for moving objects along within their constraints.
-
A few thoughts on Freecad vs Fusion 360
I think Realthunder's branch may have midpoint constrain you're looking for (https://github.com/realthunder/FreeCAD_assembly3/issues/51).
-
How to avoid breaking things when modifying existing elements in Parts Design?
Also if you use this fork of freecad: https://github.com/realthunder/FreeCAD_assembly3/releases its much better at letting you attach sketches to faces without it borking things.
-
Regularly Updated Summary of Merging of Realthunder's FreeCAD Link Branch into Topological Naming Branch?
Take a look: https://github.com/realthunder/FreeCAD_assembly3/wiki/Topological-Naming-Algorithm
- How do you prefer to place sketches on objects?
-
total FreeCAD newb, can't edit legacy parts
FreeCAD is still in development and you may have a mismatch of versions. Try .17, .18, .19, and .20 dev versions and try to find the one that doesn't show empty sketches. It may have even been made with the RealThunder branch.
-
Are there any free CAD/3D modeling programs that work with 3D printers?
Fusion 360 is probably the best choice to start. It's free and easy to use. But there are quiet heavy limitations as autodesk changed their licenses. I recently switchend from fusion to freeCAD and I'm pretty happy with it. I highly recommend Linkstage3, a freeCAD fork by a guy called realthunder. https://github.com/realthunder/FreeCAD_assembly3/releases
-
Why Does This Happen?
If you haven't already, take a look at Realthunders Linkstage branch. That's the one I usually use, although it can lead to adapting design practices that are not ideal.
- 2022 is officially the Year of Linux Gaming
-
Is it possible to reference a feature's position within a linear pattern?
FreeCAD fork linkstage3 supports expressions for patterns which I imagine would allow you to do this.
solvespace
-
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
-
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/
-
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
-
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
-
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)
-
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?
What are some alternatives?
FreeCAD - This is the official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.
cadquery - A python parametric CAD scripting framework based on OCCT
FreeCAD - Link branch FreeCAD
Autodesk-Fusion-360-for-Linux - This is a project, where I give you a way to use Autodesk Fusion 360 on Linux!
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.
blender-cad-tools - a collection of Blender addons to make CAD design with Blender even more enjoyable
freeship-plus-in-lazarus - FreeShip Plus in Lazarus
CAD_Sketcher - Constraint-based geometry sketcher for blender
DesignSpark-Mechanical-for-Linux
proton-bridge - Proton Mail Bridge application
SOLIDWORKS-for-Linux - This is a project, where I give you a way to use SOLIDWORKS on Linux!