geogebra
solvespace
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geogebra | solvespace | |
---|---|---|
74 | 69 | |
1,478 | 3,008 | |
3.0% | 1.2% | |
9.8 | 7.2 | |
5 days ago | 8 days ago | |
Java | 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.
geogebra
- GeoGebra: A dynamic mathematics software for all levels of education
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How can I embed code from the Android platform into one of my applications?
https://github.com/geogebra/geogebra How can I obtain the source code for the Android platform and embed it into our own app with only the core layer code, DeskTop, and web platform source code? Thank you for your reply.
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Desmos 3D graphing calculator (beta)
I don't think their codebases are particularly connected: AFAIK Desmos is a client-side browser app, so the software is distributed to the user for using in that way, which seems incompatible with the GPL3+ licensing of the GeoGebra codebase.
https://github.com/geogebra/geogebra
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How is the level of difficulty for this programme Calculus - 1, Is it possible for me who is a total dummy, I am feeling very nervous.
Edit: while learning derivatives you should definitely play around with a graphing calculator like https://www.geogebra.org/ . It will make understanding what's going on a lot more intuitive.
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Intersection of two conics
There are a lot of different cases, it's quite tricky. Here's the numerical algorithm in full https://github.com/geogebra/geogebra/blob/master/common/src/main/java/org/geogebra/common/kernel/algos/AlgoIntersectConics.java
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Bug on the website? Loading a .ggb-file into web viewer
Access to XMLHttpRequest at 'https://example.com/files' from origin 'https://www.geogebra.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
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bug in DynamicCoordinates( <Point>, <x-Coordinate>, <y-Coordinate>, <z-Coordinate> )
It's very simple and should stay that way - changing it would probably add bugs https://github.com/geogebra/geogebra/blob/master/common/src/main/java/org/geogebra/common/kernel/advanced/AlgoDynamicCoordinates.java
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[Request] How do I solve for X in this scenario? The Pythagorean Theorem only gives me so much info.
Can you redraw this on something like Geogebra and post a screenshot with the relevant points? Can you also explain where the circles come from and/or why you can just use trig?
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Any idea if there is a way of creating simulations such as the ones from the website PhET Colorado Edu, but without knowing anything about html, C++ or Python?
There are some decent physics examples built out in Geogebra that you might be able to use directly or modify. https://www.geogebra.org/
- What are your favorite English, math, and science teaching websites?
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?
What are some alternatives?
manim - Animation engine for explanatory math videos
cadquery - A python parametric CAD scripting framework based on OCCT
manim - A community-maintained Python framework for creating mathematical animations.
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
PyQCS - A quantum computing simulator written in python3
FreeCAD_assembly3 - Experimental attempt for the next generation assembly workbench for FreeCAD
gpt - A Python toolkit for lattice field theory, quantum computing, and machine learning
cheatsheets - Official Matplotlib cheat sheets
DesignSpark-Mechanical-for-Linux