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Merge branch 'fix_identification_on_layered_mesh' into 'master'

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fix periodic identifications for meshes where edges touch

See merge request ngsolve/netgen!665
This commit is contained in:
Schöberl, Joachim 2024-08-28 11:48:08 +02:00
commit 79d385dc0b
1 changed files with 18 additions and 17 deletions
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35
libsrc/meshing/basegeom.cpp
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@ -8,25 +8,26 @@ namespace netgen
{
struct PointTree
{
BoxTree<3> tree;
std::map<int, BoxTree<3>> tree;
Box<3> bounding_box;
PointTree( Box<3> bb ) : tree(bb) {}
PointTree( Box<3> bb ) : bounding_box(bb) {}
void Insert(Point<3> p, PointIndex n)
void Insert(Point<3> p, PointIndex n, int index)
{
tree.Insert(p, p, n);
if(tree.count(index) == 0)
tree.emplace(index, bounding_box);
tree.at(index).Insert(p, p, n);
}
PointIndex Find(Point<3> p) const
PointIndex Find(Point<3> p, int index) const
{
ArrayMem<int, 1> points;
tree.GetIntersecting(p, p, points);
tree.at(index).GetIntersecting(p, p, points);
if(points.Size()==0)
throw Exception("cannot find mapped point " + ToString(p));
return points[0];
}
double GetTolerance() { return tree.GetTolerance(); }
};
DLL_HEADER GeometryRegisterArray geometryregister;
@ -584,7 +585,6 @@ namespace netgen
for(auto & vert : vertices)
{
auto pi = mesh.AddPoint(vert->GetPoint(), vert->properties.layer);
tree.Insert(mesh[pi], pi);
vert2meshpt[vert->nr] = pi;
mesh[pi].Singularity(vert->properties.hpref);
mesh[pi].SetType(FIXEDPOINT);
@ -716,7 +716,8 @@ namespace netgen
for(auto i : Range(edge_points))
{
auto pi = mesh.AddPoint(edge_points[i], edge->properties.layer);
tree.Insert(mesh[pi], pi);
if(edge->identifications.Size())
tree.Insert(mesh[pi], pi, edge->nr);
pnums[i+1] = pi;
}
@ -757,7 +758,7 @@ namespace netgen
p_other = (*ident.trafo)(mesh[pi]);
else
static_cast<GeometryEdge*>(ident.to)->ProjectPoint(p_other, nullptr);
auto pi_other = tree.Find(p_other);
auto pi_other = tree.Find(p_other, ident.to->nr);
identifications.Add(pi, pi_other, ident.name, ident.type);
}
}
@ -866,7 +867,7 @@ namespace netgen
for(auto pi : s.PNums())
if(!is_point_in_tree[pi])
{
tree.Insert(mesh[pi], pi);
tree.Insert(mesh[pi], pi, -1);
is_point_in_tree[pi] = true;
}
@ -936,8 +937,8 @@ namespace netgen
edges[mapped_edges[edgenr]]->ProjectPoint(p2, nullptr);
edges[mapped_edges[edgenr]]->ProjectPoint(p3, nullptr);
}
sel[2] = tree.Find(p2);
sel[3] = tree.Find(p3);
sel[2] = tree.Find(p2, -1);
sel[3] = tree.Find(p3, -1);
// find mapped segment to set PointGeomInfo correctly
Segment s_other;
@ -1017,7 +1018,7 @@ namespace netgen
if(mesh[pi].Type() == SURFACEPOINT && pi_to_face[pi]==-1)
{
pi_to_face[pi] = face->nr;
tree.Insert(mesh[pi], pi);
tree.Insert(mesh[pi], pi, -1);
pi_of_face[face->nr].Append(pi);
}
}
@ -1085,7 +1086,7 @@ namespace netgen
else
edge->ProjectPoint(p, nullptr);
}
tree.Insert(p, pi);
tree.Insert(p, pi, -1);
is_point_in_tree[pi] = true;
}
}
@ -1097,7 +1098,7 @@ namespace netgen
{
auto pi = seg[i];
if(!pmap[pi].IsValid())
pmap[tree.Find(mesh[pi])] = pi;
pmap[tree.Find(mesh[pi], -1)] = pi;
// store uv values (might be different values for same point in case of internal edges)
double u = seg.epgeominfo[i].u;