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Force segemnts to stick to surface elements in mesh partition. (surf els already stick to cells in 3d)

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This commit is contained in:
Lukas 2018-08-01 10:35:26 +02:00
parent 53524579b7
commit 47e71acf13
1 changed files with 101 additions and 36 deletions
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137
libsrc/meshing/parallelmesh.cpp
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@ -1092,51 +1092,87 @@ namespace netgen
LineSegment(i+1).SetPartition(epart[i+GetNE()+GetNSE()] + 1); LineSegment(i+1).SetPartition(epart[i+GetNE()+GetNSE()] + 1);
// surface elements attached to volume elements
Array<bool, PointIndex::BASE> boundarypoints (GetNP());
boundarypoints = false;
if(GetDimension() == 3)
for (SurfaceElementIndex sei = 0; sei < GetNSE(); sei++)
{
const Element2d & el = (*this)[sei];
for (int j = 0; j < el.GetNP(); j++)
boundarypoints[el[j]] = true;
}
else
for (SegmentIndex segi = 0; segi < GetNSeg(); segi++)
{
const Segment & seg = (*this)[segi];
for (int j = 0; j < 2; j++)
boundarypoints[seg[j]] = true;
}
// Build Pnt2Element table, boundary points only
Array<int, PointIndex::BASE> cnt(GetNP());
cnt = 0;
auto loop_els_2d = [&](auto f) {
for (SurfaceElementIndex sei = 0; sei < GetNSE(); sei++)
{
const Element2d & el = (*this)[sei];
cout << "surf-el " << sei << " verts: " << endl;
for (int j = 0; j < el.GetNP(); j++) {
cout << el[j] << " ";
f(el[j], sei);
}
cout << endl;
}
};
auto loop_els_3d = [&](auto f) {
for (ElementIndex ei = 0; ei < GetNE(); ei++)
{
const Element & el = (*this)[ei];
for (int j = 0; j < el.GetNP(); j++)
f(el[j], ei);
}
};
auto loop_els = [&](auto f)
{
if (GetDimension() == 3 )
loop_els_3d(f);
else
loop_els_2d(f);
};
loop_els([&](auto vertex, int index)
{
if(boundarypoints[vertex])
cnt[vertex]++;
});
cout << "count: " << endl << cnt << endl;
TABLE<int, PointIndex::BASE> pnt2el(cnt);
loop_els([&](auto vertex, int index)
{
if(boundarypoints[vertex])
pnt2el.Add(vertex, index);
});
if (GetDimension() == 3) if (GetDimension() == 3)
{ {
// surface elements attached to volume elements
Array<bool, PointIndex::BASE> boundarypoints (GetNP());
boundarypoints = false;
for (SurfaceElementIndex sei = 0; sei < GetNSE(); sei++)
{
const Element2d & el = (*this)[sei];
for (int j = 0; j < el.GetNP(); j++)
boundarypoints[el[j]] = true;
}
// Build Pnt2Element table, boundary points only
Array<int, PointIndex::BASE> cnt(GetNP());
cnt = 0;
for (ElementIndex ei = 0; ei < GetNE(); ei++)
{
const Element & el = (*this)[ei];
for (int j = 0; j < el.GetNP(); j++)
if (boundarypoints[el[j]])
cnt[el[j]]++;
}
TABLE<ElementIndex, PointIndex::BASE> pnt2el(cnt);
cnt = 0;
for (ElementIndex ei = 0; ei < GetNE(); ei++)
{
const Element & el = (*this)[ei];
for (int j = 0; j < el.GetNP(); j++)
if (boundarypoints[el[j]])
pnt2el.Add (el[j], ei);
}
for (SurfaceElementIndex sei = 0; sei < GetNSE(); sei++) for (SurfaceElementIndex sei = 0; sei < GetNSE(); sei++)
{ {
Element2d & sel = (*this)[sei]; Element2d & sel = (*this)[sei];
PointIndex pi1 = sel[0]; PointIndex pi1 = sel[0];
FlatArray<ElementIndex> els = pnt2el[pi1]; // FlatArray<ElementIndex> els = pnt2el[pi1];
FlatArray<int> els = pnt2el[pi1];
sel.SetPartition (-1); sel.SetPartition (-1);
for (int j = 0; j < els.Size(); j++) for (int j = 0; j < els.Size(); j++)
{ {
const Element & el = (*this)[els[j]]; const Element & el = (*this)[ElementIndex(els[j])];
bool hasall = true; bool hasall = true;
@ -1165,13 +1201,13 @@ namespace netgen
{ {
Segment & sel = (*this)[si]; Segment & sel = (*this)[si];
PointIndex pi1 = sel[0]; PointIndex pi1 = sel[0];
FlatArray<ElementIndex> els = pnt2el[pi1]; FlatArray<int> els = pnt2el[pi1];
sel.SetPartition (-1); sel.SetPartition (-1);
for (int j = 0; j < els.Size(); j++) for (int j = 0; j < els.Size(); j++)
{ {
const Element & el = (*this)[els[j]]; const Element & el = (*this)[ElementIndex(els[j])];
bool haspi[9] = { false }; // max surfnp bool haspi[9] = { false }; // max surfnp
@ -1193,7 +1229,36 @@ namespace netgen
if (sel.GetPartition() == -1) if (sel.GetPartition() == -1)
cerr << "no volume element found" << endl; cerr << "no volume element found" << endl;
} }
}
else
{
for (SegmentIndex segi = 0; segi < GetNSeg(); segi++)
{
Segment & seg = (*this)[segi];
seg.SetPartition(-1);
PointIndex pi1 = seg[0];
FlatArray<int> sels = pnt2el[pi1];
for (int j = 0; j < sels.Size(); j++)
{
SurfaceElementIndex sei = sels[j];
Element2d & se = (*this)[sei];
bool found = false;
for (int l = 0; l < se.GetNP(); l++ && !found)
found |= (se[l]==seg[1]);
if(found) {
seg.SetPartition(se.GetPartition());
break;
}
}
if (seg.GetPartition() == -1) {
cout << endl << "segi: " << segi << endl;
cout << "points: " << seg[0] << " " << seg[1] << endl;
cout << "surfels: " << endl << sels << endl;
throw NgException("no surface element found");
}
}
} }
} }