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[mparusinski <>]

Hi everyone,

I am performing a 3d mesh triangulation for finite element analysis. In
order to perform the analysis I need to assign to each facet a corresponding
boundary pressure information. When doing so I sometimes need to use the
neighbours of a facets, and by neighbour I understand a facet that share a
common edge with the one in question. However I run into a problem, I expect
all facet to have either 0,1,2 or 3 neighbours, since a facet is a triangle
with 3 edges and I assume surface to be a smooth manifold, but I sometimes
get facets with 4,5 or even 7 facets. Did anybody run into this problem? Is
there normal, or is it due to rounding error or something similar?

http://img829.imageshack.us/img829/9066/permeabilitytoomanyneig.png

Thanks in advance,
Michal Parusinski
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