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Merge branch 'stl_refine_fix' into 'master'

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Stl refine fix

See merge request jschoeberl/netgen!249
This commit is contained in:
Joachim Schöberl 2019-09-27 15:35:17 +00:00
commit 28d05d9ae7
1 changed files with 77 additions and 2 deletions
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79
libsrc/stlgeom/meshstlsurface.cpp
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@ -438,8 +438,9 @@ int STLSurfaceMeshing (STLGeometry & geom, class Mesh & mesh, const MeshingParam
PrintMessage(5,"check overlapping");
// mesh.FindOpenElements(); // would leed to locked points
if(mesh.CheckOverlappingBoundary())
return MESHING3_BADSURFACEMESH;
mesh.CheckOverlappingBoundary();
// if(mesh.CheckOverlappingBoundary()) ;
// return MESHING3_BADSURFACEMESH;
geom.InitMarkedTrigs();
@ -494,7 +495,78 @@ int STLSurfaceMeshing (STLGeometry & geom, class Mesh & mesh, const MeshingParam
mesh.RestrictLocalH (refpts.Get(i), refh.Get(i));
mesh.RemoveOneLayerSurfaceElements();
// Open edge-segments will be refined !
INDEX_2_HASHTABLE<int> openseght (nopen+1);
for (int i = 1; i <= mesh.GetNOpenSegments(); i++)
{
const Segment & seg = mesh.GetOpenSegment (i);
INDEX_2 i2(seg[0], seg[1]);
i2.Sort();
openseght.Set (i2, 1);
}
mesh.FindOpenSegments ();
mesh.RemoveOneLayerSurfaceElements();
mesh.FindOpenSegments ();
int nsegold = mesh.GetNSeg();
INDEX_2_HASHTABLE<int> newpht(100);
for (int i = 1; i <= nsegold; i++)
{
Segment seg = mesh.LineSegment(i);
INDEX_2 i2(seg[0], seg[1]);
i2.Sort();
if (openseght.Used (i2))
{
// segment will be split
PrintMessage(7,"Split segment ", int(seg[0]), "-", int(seg[1]));
Segment nseg1, nseg2;
EdgePointGeomInfo newgi;
const EdgePointGeomInfo & gi1 = seg.epgeominfo[0];
const EdgePointGeomInfo & gi2 = seg.epgeominfo[1];
newgi.dist = 0.5 * (gi1.dist + gi2.dist);
newgi.edgenr = gi1.edgenr;
int hi;
Point3d newp;
int newpi;
if (!newpht.Used (i2))
{
newp = geom.GetLine (gi1.edgenr)->
GetPointInDist (geom.GetPoints(), newgi.dist, hi);
newpi = mesh.AddPoint (newp);
newpht.Set (i2, newpi);
}
else
{
newpi = newpht.Get (i2);
newp = mesh.Point (newpi);
}
nseg1 = seg;
nseg2 = seg;
nseg1[1] = newpi;
nseg1.epgeominfo[1] = newgi;
nseg2[0] = newpi;
nseg2.epgeominfo[0] = newgi;
mesh.LineSegment(i) = nseg1;
mesh.AddSegment (nseg2);
mesh.RestrictLocalH (Center (mesh.Point(nseg1[0]),
mesh.Point(nseg1[1])),
Dist (mesh.Point(nseg1[0]),
mesh.Point(nseg1[1])));
mesh.RestrictLocalH (Center (mesh.Point(nseg2[0]),
mesh.Point(nseg2[1])),
Dist (mesh.Point(nseg2[0]),
mesh.Point(nseg2[1])));
}
}
mesh.Compress();
mesh.FindOpenSegments ();
@ -516,6 +588,9 @@ int STLSurfaceMeshing (STLGeometry & geom, class Mesh & mesh, const MeshingParam
}
while (nopen);
if(mesh.CheckOverlappingBoundary())
return MESHING3_BADSURFACEMESH;
mesh.Compress();
mesh.CalcSurfacesOfNode();