r/mathpics • u/No-Crew8804 • Jul 26 '25

Free tool for 3D geometry?

Dear community, I have defined a set of irregular tetraedra that I think will join interestingly in space, do you know any free and easy tool to model them for testing?

7 Upvotes

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5

u/xenomachina Jul 26 '25

OpenSCAD is one option.

It is free. I hesitate to call it "easy", but if you're starting from a mathematical definition, it may be easier than a GUI CAD or 3D modeling tool. It has essentially a programming language that you use to define 3D geometry.

2

u/No-Crew8804 Jul 26 '25

Thanks, I think this is what I was looking for

3

u/xenomachina Jul 26 '25

If you only want to render, another option is POV-Ray. I haven't used it in about 20 years, but it also has a language for defining 3D geometry. Some mathematical things may be easier in it than in OpenSCAD.

2

u/desquared Jul 26 '25

Oh man I did a lot of stuff with pov-ray back in the early and mid 90s. I should take a look again. Marble textured spheres FTW!

1

u/lavaboosted Jul 26 '25

Blender is great, check out geometry nodes for mathematically defined geometry.

1

u/No-Crew8804 28d ago

In the end I am doing it in OpenScad, not easy but for me a programmer it is more my thing, and of course it cannot be easy as the geometry is not regular (and it does not solve restrictions).

2

u/fm_31 5d ago

Avez vous essayé GeoGebra ? Exemple : Modeling in 3D: The BIG PICTURE – GeoGebra

1

u/No-Crew8804 5d ago

But you cannot do it programmatically, or can you?

2

u/fm_31 5d ago

Maybe using CAS (Computer Algebra System) window but I'm not used to using it.