From 090ca6925ea935097cea4bd9a0fea8bf1e447fab Mon Sep 17 00:00:00 2001 From: eap Date: Tue, 30 Mar 2010 08:02:25 +0000 Subject: [PATCH] 0020676: EDF 1212 GEOM: Partition operation creates vertices which causes mesh computation to fail with netgen * Care of nodes on vertices that can be shared between wires --- .../NETGENPlugin_NETGEN_2D_ONLY.cxx | 109 ++++++++++-------- 1 file changed, 62 insertions(+), 47 deletions(-) diff --git a/src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx b/src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx index 5eb07f8..71fb53b 100644 --- a/src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx +++ b/src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx @@ -68,6 +68,8 @@ using namespace std; using namespace netgen; using namespace nglib; +//#define DUMP_SEGMENTS + //============================================================================= /*! * @@ -201,6 +203,10 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh, // bb.Increase (bb.Diam()/10); // ngMesh.SetLocalH (bb.PMin(), bb.PMax(), 0.5); // set grading + // map for nodes on vertices since they can be shared between wires + // ( issue 0020676, face_int_box.brep) + map node2ngID; + const int faceID = 1, solidID = 0; if ( ngMesh.GetNFD() < 1 ) ngMesh.AddFaceDescriptor (FaceDescriptor(faceID, solidID, solidID, 0)); @@ -211,35 +217,45 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh, const vector& uvPtVec = wire->GetUVPtStruct(); const int nbSegments = wire->NbPoints() - 1; - int firstPointID = ngMesh.GetNP() + 1; int edgeID = 1, posID = -2; - bool isInternalEdge = false; + bool isInternalWire = false; for ( int i = 0; i < nbSegments; ++i ) // loop on segments { // Add the first point of a segment const SMDS_MeshNode * n = uvPtVec[ i ].node; const int posShapeID = n->GetPosition()->GetShapeId(); + bool onVertex = ( n->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX ); // skip nodes on degenerated edges if ( helper.IsDegenShape( posShapeID ) && helper.IsDegenShape( uvPtVec[ i+1 ].node->GetPosition()->GetShapeId() )) continue; - nodeVec.push_back( n ); - - MeshPoint mp( Point<3> (n->X(), n->Y(), n->Z()) ); - ngMesh.AddPoint ( mp, 1, EDGEPOINT ); + int ngID1 = ngMesh.GetNP() + 1, ngID2 = ngID1+1; + if ( onVertex ) + ngID1 = node2ngID.insert( make_pair( n, ngID1 )).first->second; + if ( ngID1 > ngMesh.GetNP() ) + { + MeshPoint mp( Point<3> (n->X(), n->Y(), n->Z()) ); + ngMesh.AddPoint ( mp, 1, EDGEPOINT ); + nodeVec.push_back( n ); + } + else + { + ngID2 = ngMesh.GetNP() + 1; + if ( i > 0 ) // prev segment belongs to same wire + { + Segment& prevSeg = ngMesh.LineSegment( ngMesh.GetNSeg() ); + prevSeg[1] = ngID1; + } + } // Add the segment Segment seg; -#ifdef NETGEN_NEW - seg.pnums[0] = ngMesh.GetNP(); // ng node id - seg.pnums[1] = seg.pnums[0] + 1; // ng node id -#else - seg.p1 = ngMesh.GetNP(); // ng node id - seg.p2 = seg.p1 + 1; // ng node id -#endif + seg[0] = ngID1; // ng node id + seg[1] = ngID2; // ng node id + seg.edgenr = ngMesh.GetNSeg() + 1;// segment id seg.si = faceID; // = geom.fmap.FindIndex (face); @@ -252,7 +268,7 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh, seg.epgeominfo[ iEnd ].v = pnt.v; // find out edge id and node parameter on edge - bool onVertex = ( pnt.node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX ); + onVertex = ( pnt.node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX ); if ( onVertex || posShapeID != posID ) { // get edge id @@ -262,7 +278,7 @@ 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 ); + isInternalWire = ( 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 ); } @@ -271,47 +287,46 @@ static TError AddSegmentsToMesh(netgen::Mesh& ngMesh, ngMesh.AddSegment (seg); -// cout << "Segment: " << seg.edgenr << endl -// << "\tp1: " << seg.p1 << endl -// << "\tp2: " << seg.p2 << endl -// << "\tp0 param: " << seg.epgeominfo[ 0 ].dist << endl -// << "\tp0 uv: " << seg.epgeominfo[ 0 ].u <<", "<< seg.epgeominfo[ 0 ].v << endl -// << "\tp0 edge: " << seg.epgeominfo[ 0 ].edgenr << endl -// << "\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; - - if ( isInternalEdge ) - { -#ifdef NETGEN_NEW - swap (seg.pnums[0], seg.pnums[1]); -#else - swap (seg.p1, seg.p2); +#ifdef DUMP_SEGMENTS + cout << "Segment: " << seg.edgenr << endl + << "\tp1: " << seg[0] << endl + << "\tp2: " << seg[1] << endl + << "\tp0 param: " << seg.epgeominfo[ 0 ].dist << endl + << "\tp0 uv: " << seg.epgeominfo[ 0 ].u <<", "<< seg.epgeominfo[ 0 ].v << endl + << "\tp0 edge: " << seg.epgeominfo[ 0 ].edgenr << endl + << "\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; #endif + if ( isInternalWire ) + { + swap (seg[0], seg[1]); swap( seg.epgeominfo[0], seg.epgeominfo[1] ); seg.edgenr = ngMesh.GetNSeg() + 1; // segment id ngMesh.AddSegment (seg); +#ifdef DUMP_SEGMENTS + cout << "Segment: " << seg.edgenr << endl << "\tis REVRESE of the previous one" << endl; +#endif } } // 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) + if ( nbSegments > 0 ) { - 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 ); + Segment& lastSeg = ngMesh.LineSegment( ngMesh.GetNSeg() - int( isInternalWire)); + const SMDS_MeshNode * lastNode = uvPtVec.back().node; + lastSeg[1] = node2ngID.insert( make_pair( lastNode, lastSeg[1] )).first->second; + if ( lastSeg[1] > ngMesh.GetNP() ) + { + MeshPoint mp( Point<3> (lastNode->X(), lastNode->Y(), lastNode->Z()) ); + ngMesh.AddPoint ( mp, 1, EDGEPOINT ); + nodeVec.push_back( lastNode ); + } + if ( isInternalWire ) + { + Segment& realLastSeg = ngMesh.LineSegment( ngMesh.GetNSeg() ); + realLastSeg[0] = lastSeg[1]; + } } } // loop on wires of a face -- 2.39.2