Question: Read tetrahedral mesh & mesh refinement

[Zhuyouxx]

Dear author,

I am very excited and grateful to have come across your shared tools for optimizing tetrahedral meshes. However, I have encountered some issues during use and hope you can help clarify my doubts. Thank you very much!

1. I tried to load a tetrahedral mesh using the command wmtk_app -j input2.json and encountered an error:

[2024-08-03 23:12:46.085] [wmtk] [error] Input tet is degenerated.

Could you please explain what causes this issue? How should I modify my application? Here is the content of my JSON file:

{
    "components": [
        {
            "input": {
                "file": "bunny.msh",
                "name": "mesh"
            }
        }
    ],
    "tests": {
        "edges": [
            218
        ],
        "faces": [
            3274
        ],
        "meshes": [
            "mesh"
        ],
        "tetrahedra": [
            15607
        ],
        "vertices": [
            3520
        ]
    }
}

and there is my mesh :https://github.com/Zhuyouxx/Share-file/blob/main/bunny.msh

2. Can your toolkit perform tetrahedral mesh optimization, such as fixing elongated faces? If so, could you provide example code or indicate which class handles these operations?

Thank you very much for your sharing, and I apologize for any disturbance.

Best regards.