where is tetrahedralize function in conda?

[erleben]

Describe your question

I am using ibigl with conda and I want to use the tetrahedralize function:

V, T, _ = igl.tetrahedralize(V, F, str(options))

However, I keep getting this error message:

AttributeError: module 'igl' has no attribute 'tetrahedralize'

Suggesting that the function does not exist in the python-conda version of libigl. Anaconda tells me I am using version 0.4.1 which seems to be the most recent version.

Is there a way to fix this?

Check all that apply (change to [x])

• Windows
• [ x] macOS
• Linux

[danielepanozzo]

Tetrahedralize in libigl uses TetGen, which has a viral license. We had to remove it from the python package to avoid having the entire package released under GPL license. I suggest to either use some other python tetgen wrapper (https://pypi.org/project/pytetgen/) or wildmeshing if you do not need a mesh conforming exactly to the input (https://wildmeshing.github.io/python/).

Hi @danielepanozzo,

I am facing a similar problem. I would like to use the function

igl.copyleft.swept_volume(V, F, transform, time_steps, grid_size, isolevel, SV, SF)

As the functions in copyleft are removed from the python package I tried to "compile from scratch" by modifying "CMakeLists.txt"

option(PY_IGL_COPYLEFT "Builds Copyleft" ON)

and running

python setup.py install

however ran into different problems.
Is there a way to build a python binding which includes the functions in "copyleft", especially swept_volume()?
Thank you!

Check all that apply:
[x] Windows

[danielepanozzo]

We are currently not planning to write or support python bindings for any of the functions in copyleft. I think @alecjacobson and @qnzhou are working on a non copyleft version of the boolean package, that will allow us to remove the copyleft tagging from most of the functions in there and in particular to swept volume. Not sure what is the ETA for that though.

[alecjacobson]

swept volume just needs marching cubes (not booleans). it could be moved to the main library if we switched it to use the marching tets.

Thank you for the quick answers and the support!

It would be great if it would be available in the main library. Do you can estimate when the moving could be done?