Feature: scheme function for ancestor face information #1738
Description
Feature request
Is your feature request related to a problem? Please describe.
When computing face neighbors across multiple refinement levels (see #1737) we face the following problem:
Given an element E and a face f of E.
Given an element A that is ancestor of E and f is a part of a face of A. (i.e. if we refine a face of A recursively we end up with f).
What is the corresponding face (index) of the respective face of A?
Describe the solution or feature you'd like
A new scheme function element_get_face_ancestor (element_a, face f, level L) (or similar) returning the face number of
the level L ancestor at the given face f.
Describe alternatives you've considered
I could not find an alternative solution to this problem.
Estimated priority
"Priority: medium" Should be solved within half a year
Additional context
Related to the extended face neighbor computation #1737 #1736