[MOAB-dev] Hex face to quad detection.

[Tim Tautges]

First, because I know what you're working on, I should mention: if you have geometry sets in your data, in some cases 
it's easier to browse through the volume sets (those with GEOM_DIMENSION=3) and get the sets of bounding face sets; 
those will be children of the volume sets, and will contain the quads on those (geometric) faces.

Now on to your real question:

On 10/18/2012 03:34 PM, Robert Maynard wrote:
> I am currently working on relating a collection of hex's to a
> collection of quads. I can determine that a hex is adjacent to quad
> and than confirm that the hex has all the quads points in common which
> means it should be a face ( I know the hex are created from the quads
> ).
>
> My question is there currently a function to determine which face of
> the hex a quad relates too? do I need to get the connectivity of the
> hex and quad and manually inspect those?
>

MOAB has a canonical numbering class that does this sort of thing, and also functions in the API that work for specific 
entities.  Interface::side_number is the one you want to use; this takes the entity/facet handles and returns side #, 
sense, and offset.  The CN class functions do the same thing, but take connectivity lists or indices as arguments.

- tim


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              Tim Tautges            Argonne National Laboratory
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