[SOLVED] Obj Files, Msh Files

[hafid]

Hello, I’m a newbie. I’ve tried to use sofa-framework before. But, I still don’t understand how to use it properly. I’ve tried the tutorials. But, it’s really difficult to understand.

There are too many parameters. What should I do with that?
I don’t know what to do, since I can’t find any hint related to the parameters.

I have another question…
How to create the .msh or .obj files? Are there any recomended tools to create them?
I used maya, blender, and 3dsMax before.. But no one of them working fine…

Thanks in advance 😀

[Alex Bilger]

Reading your post, your two questions are somehow related. For example, the software you mentioned (Maya, Blender and 3dsMax) are great tools to create obj files (if you need obj). But if you’re looking for tools to create volume meshes, I agree that you should not use the mentioned tools.
You can generate volume meshes with Sofa if you have a surface (component MeshTetraStuffing for simple meshes, or MeshGenerationFromPolyhedron to use the CGAL library) or a segmented 3D image (MeshGenerationFromImage). But you will end up with various parameters. Unfortunately, you need to understand them. There is no method to generate what you want without configuring it.
To understand a parameter: 1) Read the description (in the Modeler for example), 2) Look for examples in the ‘examples’ folder and try to tune the parameters to see the effect on the simulation, 3) Read the C++ code if you can, 4) Your question about the parameters is too generic but you can ask a specific question on the forum.

[hafid]

Thanks very much Mr. Bilger.
It’s really helpful.

I’ve tried to tune some of the parameter.
I can see a big the differences, but sometimes I can’t see any.
It seems that I have to try more… 😀

[Alex Bilger]

I would say it makes sense. The best to understand the parameters would be to understand the algorithm which utilizes it. Good luck

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