I have a STEP geometry, a box. I can build a mesh from this geometry (with nglib) and I can explore the topology hierarchy, but i want to get and identify some boundaries (faces and edges) in order to create face groups.
At this point I wonder if it is possible to extract a submesh that corresponds to a topology, or in another way, if it is possible to identify each element (triangle or tetra), from the mesh, with any topology.
Are there any function/method for this?
I accept any suggest. Thanks! :D