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fix Mirror for second-order meshes

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This commit is contained in:
Joachim Schoeberl 2021-10-17 18:59:49 +02:00
parent c20480c662
commit 0b7d8d5a9b
1 changed files with 44 additions and 6 deletions
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50
libsrc/meshing/meshclass.cpp
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@ -7129,6 +7129,7 @@ namespace netgen
return fabs(v*n_plane) < eps;
};
/*
auto mirror = [&] (PointIndex pi) -> PointIndex
{
auto & p = m[pi];
@ -7151,14 +7152,51 @@ namespace netgen
for(auto pi : Range(points))
point_map[pi] = mirror(pi);
*/
Array<PointIndex, PointIndex> point_map(GetNP());
Array<PointIndex, PointIndex> point_map1(GetNP());
nm.Points().SetSize(0);
for(auto pi : Range(points))
{
auto & p = m[pi];
auto v = p_plane-p;
auto l = v.Length();
if(l < eps || fabs(v*n_plane)/l < eps)
{
auto npi = nm.AddPoint(p, p.GetLayer(), p.Type());
point_map[pi] = npi;
point_map1[pi] = npi;
}
else
{
auto new_point = p + 2*(v*n_plane)*n_plane;
point_map1[pi] = nm.AddPoint(p, p.GetLayer(), p.Type());
point_map[pi] = nm.AddPoint( new_point, p.GetLayer(), p.Type() );
}
}
for(auto & el : nm.VolumeElements())
for(auto i : Range(el.GetNP()))
el[i] = point_map1[el[i]];
for(auto & el : nm.SurfaceElements())
for(auto i : Range(el.GetNP()))
el[i] = point_map1[el[i]];
for(auto & el : nm.LineSegments())
for(auto i : Range(el.GetNP()))
el[i] = point_map1[el[i]];
for(auto & el : VolumeElements())
{
auto nel = el;
for(auto i : Range(el.GetNP()))
nel[i] = point_map[el[i]];
nm.AddVolumeElement(nel);
}
{
auto nel = el;
for(auto i : Range(el.GetNP()))
nel[i] = point_map[el[i]];
nm.AddVolumeElement(nel);
}
for (auto ei : Range(SurfaceElements()))
{