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0020676: EDF 1212 GEOM: Partition operation creates vertices which causes mesh computation to fail with netgen

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* Fix for internal edges
This commit is contained in:
eap 2010-02-11 08:28:13 +00:00
parent 388d346ae9
commit f8b902ad9a
1 changed files with 34 additions and 5 deletions
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39
src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx
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@ -209,6 +209,7 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh,
int firstPointID = ngMesh.GetNP() + 1;
int edgeID = 1, posID = -2;
bool isInternalEdge = false;
for ( int i = 0; i < wire->NbSegments(); ++i ) // loop on segments
{
// Add the first point of a segment
@ -257,6 +258,7 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh,
const TopoDS_Edge& edge = wire->Edge( wire->EdgeIndex( normParam ));
edgeID = geom.emap.FindIndex( edge );
posID = posShapeID;
isInternalEdge = ( edge.Orientation() == TopAbs_INTERNAL );
if ( onVertex ) // param on curve is different on each of two edges
seg.epgeominfo[ iEnd ].dist = helper.GetNodeU( edge, pnt.node );
}
@ -274,14 +276,41 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh,
// << "\tp1 param: " << seg.epgeominfo[ 1 ].dist << endl
// << "\tp1 uv: " << seg.epgeominfo[ 1 ].u <<", "<< seg.epgeominfo[ 1 ].v << endl
// << "\tp1 edge: " << seg.epgeominfo[ 1 ].edgenr << endl;
}
Segment& seg = ngMesh.LineSegment( ngMesh.GetNSeg() );
if ( isInternalEdge )
{
#ifdef NETGEN_NEW
seg.pnums[1] = firstPointID;
swap (seg.pnums[0], seg.pnums[1]);
#else
seg.p2 = firstPointID;
swap (seg.p1, seg.p2);
#endif
}
swap( seg.epgeominfo[0], seg.epgeominfo[1] );
seg.edgenr = ngMesh.GetNSeg() + 1; // segment id
ngMesh.AddSegment (seg);
}
} // loop on segments on a wire
// close chain of segments
bool isClosedWire = ( wire->FirstVertex().IsSame( wire->LastVertex() ));
if ( isClosedWire )
{
Segment& seg = ngMesh.LineSegment( ngMesh.GetNSeg() );
#ifdef NETGEN_NEW
seg.pnums[1] = firstPointID;
#else
seg.p2 = firstPointID;
#endif
}
else // INTERNAL wire (Issue 0020676)
{
const SMDS_MeshNode * n = uvPtVec.back().node;
nodeVec.push_back( n );
MeshPoint mp( Point<3> (n->X(), n->Y(), n->Z()) );
ngMesh.AddPoint ( mp, 1, EDGEPOINT );
}
} // loop on wires of a face
ngMesh.CalcSurfacesOfNode();