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Do edge swapping for faces individually with tensor product meshes

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If the mesh contains quads, the edge swapping algorithm switches to
generic improve, which introduces quads everywhere. This is not intended
if one domain contains a tensor product mesh.
Thus, call the optimizer for each face if mesh contains quads but mp.quad
is not set.
This commit is contained in:
Matthias Hochsteger 2020-06-08 10:42:26 +02:00
parent d1c7a16d63
commit d08e2daa06
1 changed files with 42 additions and 3 deletions
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45
libsrc/meshing/meshfunc2d.cpp
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@ -20,6 +20,19 @@ namespace netgen
}
mesh.Compress();
bool optimize_swap_separate_faces = false;
if(!mp.quad)
{
bool mixed = false;
ParallelFor( Range(mesh.GetNSE()), [&] (auto i) NETGEN_LAMBDA_INLINE
{
if (mesh[SurfaceElementIndex(i)].GetNP() != 3)
mixed = true;
});
if(mixed)
optimize_swap_separate_faces = true;
}
const char * optstr = mp.optimize2d.c_str();
int optsteps = mp.optsteps2d;
@ -31,16 +44,42 @@ namespace netgen
{
case 's':
{ // topological swap
MeshOptimize2d meshopt(mesh);
MeshOptimize2d meshopt(mesh);
meshopt.SetMetricWeight (mp.elsizeweight);
meshopt.EdgeSwapping (0);
if(optimize_swap_separate_faces)
{
for(auto i : Range(1, mesh.GetNFD()+1))
{
meshopt.SetFaceIndex(i);
meshopt.EdgeSwapping (0);
}
}
else
{
meshopt.SetFaceIndex(0);
meshopt.EdgeSwapping (0);
}
break;
}
case 'S':
{ // metric swap
MeshOptimize2d meshopt(mesh);
meshopt.SetMetricWeight (mp.elsizeweight);
meshopt.EdgeSwapping (1);
if(optimize_swap_separate_faces)
{
for(auto i : Range(1, mesh.GetNFD()+1))
{
meshopt.SetFaceIndex(i);
meshopt.EdgeSwapping (1);
}
}
else
{
meshopt.SetFaceIndex(0);
meshopt.EdgeSwapping (1);
}
break;
}
case 'm':