RE: [Libmesh-devel] Child side == parent side?

[KIRK, B. (JSC-E. (NASA) <ben...@na...>]

Yes, the refinement patters are devised such that the child side == parent
side.  Among other things, this allows us to make assumptions in the
BoundaryInfo class.

As for pyramids, they used to refine uniformly in libMesh, but when
re-factoring the refinement scheme I never implemented the embedding matrix.
I figure I'll wait for the RefinementPattern implementation, since there
seems to be no big rush for it right now.  However, if you look at the
Pyramid side numbering scheme, it is designed to support this assumption.

-Ben







-----Original Message-----
From: lib...@li...
[mailto:lib...@li...] On Behalf Of Roy Stogner
Sent: Friday, February 25, 2005 3:34 PM
To: lib...@li...
Subject: [Libmesh-devel] Child side == parent side?



Given a side number and a child element, is there any good way to find out
what side (number) of the parent contains the child's side?  I'd bet
child_side == parent_side for tri/quad/hex elements, but I'm not sure what
to do about tets, pyramids (Do these even refine uniformly in libmesh?  I
didn't see an embedding_matrix), etc.
---
Roy


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