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#include <mystdlib.h>
#include "meshing.hpp"
namespace netgen
{
DLL_HEADER void Optimize2d (Mesh & mesh, MeshingParameters & mp, int faceindex)
{
static Timer timer("optimize2d"); RegionTimer reg(timer);
mesh.CalcSurfacesOfNode();
bool secondorder = mesh.GetNP() > mesh.GetNV();
if (secondorder)
{
for (SurfaceElementIndex ei = 0; ei < mesh.GetNSE(); ei++)
mesh[ei].SetType(TRIG);
}
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;
}
if(faceindex)
optimize_swap_separate_faces = false;
const char * optstr = mp.optimize2d.c_str();
int optsteps = mp.optsteps2d;
// reset topology
mesh.GetTopology() = MeshTopology(mesh);
for (int i = 1; i <= optsteps; i++)
for (size_t j = 1; j <= strlen(optstr); j++)
{
if (multithread.terminate) break;
MeshOptimize2d meshopt(mesh);
meshopt.SetMetricWeight (mp.elsizeweight);
meshopt.SetFaceIndex(faceindex);
switch (optstr[j-1])
{
case 's':
{ // topological swap
if(optimize_swap_separate_faces)
{
for(auto i : Range(1, mesh.GetNFD()+1))
{
meshopt.SetFaceIndex(i);
meshopt.EdgeSwapping (0);
}
}
else
{
meshopt.EdgeSwapping (0);
}
break;
}
case 'S':
{ // metric swap
if(optimize_swap_separate_faces)
{
for(auto i : Range(1, mesh.GetNFD()+1))
{
meshopt.SetFaceIndex(i);
meshopt.EdgeSwapping (1);
}
}
else
{
meshopt.EdgeSwapping (1);
}
break;
}
case 'm':
{
meshopt.ImproveMesh(mp);
break;
}
case 'c':
{
meshopt.CombineImprove();
break;
}
default:
cerr << "Optimization code " << optstr[j-1] << " not defined" << endl;
}
}
mesh.Compress(); // better: compress in individual steps, if necessary
if (secondorder)
{
mesh.GetGeometry()->GetRefinement().MakeSecondOrder(mesh);
}
}
}
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