[Dune] Intersection iterator and global labels of vertices

[Sacconi, Andrea]

Hi everyone,

I have a quick question about the Intersection Iterator. Before starting, I'm using AlbertGrid.

Suppose you have a triangle ABC, and you need to perform some operations related to its boundary edges, i.e., the three segments AB, AC, BC.
When you call the intersection iterator, you get three iterators, one for each edge. So far, so good.
But what is the correspondence? I mean, iterator -> geometry().corner(0) gives you the local first corner of the codim-1 entity. To which global vertex does it correspond? A, B or C?

I'm not even sure if this question is related to DUNE in general, or maybe should be addressed to DUNE-FEM.
Thanks for your help!

Andrea

__________________________________________________________

Andrea Sacconi
PhD student, Applied Mathematics
AMMP Section, Department of Mathematics, Imperial College London,
London SW7 2AZ, UK
a.sacconi11 at imperial.ac.uk
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