Hello,
I am having a few problems understanding how to assign surface elements
(triangles) to given partitions.
I have written some code to do boolean subtraction of a closed gmsh
triangulated surface from a gmsh tetrahedral mesh. When doing so, any new
triangle surfaces that are created I would like to group together. I tried
writing the elements like
===
const unsigned int ELEM_THREE_NODE_TRIANGLE = 2;
f << tetrahedra.size()+ ui+1 << " " << ELEM_THREE_NODE_TRIANGLE <<
" 3 " << triangles[ui].physGroup << " 1 0 " << triangles[ui].p[0]+1
<< " " << triangles[ui].p[1]+1 << " "<< triangles[ui].p[2]+1 << endl;
===
but this does not seem to work.
Looking at section 9.1 of the manual, the only thing I can think of is that I
need to write the $PhysicalNames section; however there is no description of
this section in the manual, aside from the short summary given.
Does anyone have any advice on what I should be doing?
Thanks.
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