occwl Is it possible to get the adjacency of a brep entity?

[nylvy]

As the question, if you can give guidance, thank you!

[JoeLambourne]

Hi @nylvy,

occwl is build on OpenCascade. It is "a bit odd" with respect to adjacency, especially if you are used to working with other solid modeling kernels. The way OpenCascade works is that you have to make the adjacency query using higher level entries. For example, to find out if two faces are adjacent to each other then you need to query at the shell, solid or complex level. There are no pointers from edges to faces for example. For more detail see here.

If you would like to know about adjacent faces then the code you want is BottomUpFaceIterator.faces_from_edge().

A good example to look at is graph.py which can build a face adjacency graph for a solid.