[Gmsh] Multiple Material Meshing

[Hines, Albert M.]

No ideas? What if we make it simple by pre-sorting the interior and
exterior boundaries like this?

$MeshFormat
2 0 8
$EndMeshFormat
$Nodes
8
1 0.000000 0.000000 0.000000 
2 1.000000 0.000000 0.000000 
3 0.500000 0.000000 -0.800000 
4 0.333300 0.700000 -0.233300 
5 0.253660 1.054899 -0.244923 
6 0.526822 -0.089872 -1.155311 
7 1.312372 -0.085001 0.119603 
8 -0.290074 -0.095034 0.136553 
$EndNodes
$Elements
8
1 2 2 1 0 1 2 3
2 2 2 1 0 1 4 2
3 2 2 1 0 2 4 3
4 2 2 1 0 3 4 1
5 2 2 2 0 6 5 8
6 2 2 2 0 7 5 6
7 2 2 2 0 8 5 7
8 2 2 2 0 8 7 6
$EndElements


> I don't think my recent post was very clear. I have the input geometry
below. I need to output a tetra in the center having one tag and a set
of non-intersecting tetras outside the first element, all having a
second tag. I need both sets to have exterior faces precisely equivalent
to the input triangles below. And further, I need a procedure that is
general enough to work in non-trivial situations (i.e., screen picking
or entering individual id's is not allowed). Anyone kind enough to help?
Sincere thanks,


Albert Hines
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