bool NETGENPlugin_Mesher::fillNgMesh(netgen::OCCGeometry& occgeom, netgen::Mesh& ngMesh, vector<SMDS_MeshNode*>& nodeVec, const list< SMESH_subMesh* > & meshedSM) { TNode2IdMap nodeNgIdMap; TopTools_MapOfShape visitedShapes; SMESH_MesherHelper helper (*_mesh); int faceID = occgeom.fmap.Extent(); _faceDescriptors.clear(); list< SMESH_subMesh* >::const_iterator smIt, smEnd = meshedSM.end(); for ( smIt = meshedSM.begin(); smIt != smEnd; ++smIt ) { SMESH_subMesh* sm = *smIt; if ( !visitedShapes.Add( sm->GetSubShape() )) continue; SMESHDS_SubMesh * smDS = sm->GetSubMeshDS(); switch ( sm->GetSubShape().ShapeType() ) { case TopAbs_EDGE: { // EDGE // ---------------------- const TopoDS_Edge& geomEdge = TopoDS::Edge( sm->GetSubShape() ); // Add ng segments for each not meshed face the edge bounds TopTools_MapOfShape visitedAncestors; const TopTools_ListOfShape& ancestors = _mesh->GetAncestors( geomEdge ); TopTools_ListIteratorOfListOfShape ancestorIt ( ancestors ); for ( ; ancestorIt.More(); ancestorIt.Next() ) { const TopoDS_Shape & ans = ancestorIt.Value(); if ( ans.ShapeType() != TopAbs_FACE || !visitedAncestors.Add( ans )) continue; const TopoDS_Face& face = TopoDS::Face( ans ); int faceID = occgeom.fmap.FindIndex( face ); if ( faceID < 1 ) continue; // meshed face // find out orientation of geomEdge within face bool isForwad = false; for ( TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next() ) { if ( geomEdge.IsSame( exp.Current() )) { isForwad = ( exp.Current().Orientation() == geomEdge.Orientation() ); break; } } bool isQuad = smDS->GetElements()->next()->IsQuadratic(); // get all nodes from geomEdge StdMeshers_FaceSide fSide( face, geomEdge, _mesh, isForwad, isQuad ); const vector<UVPtStruct>& points = fSide.GetUVPtStruct(); int i, nbSeg = fSide.NbSegments(); double otherSeamParam = 0; helper.SetSubShape( face ); bool isSeam = helper.IsRealSeam( geomEdge ); if ( isSeam ) otherSeamParam = helper.GetOtherParam( helper.GetPeriodicIndex() == 1 ? points[0].u : points[0].v ); // add segments int prevNgId = ngNodeId( points[0].node, ngMesh, nodeNgIdMap ); for ( i = 0; i < nbSeg; ++i ) { const UVPtStruct& p1 = points[ i ]; const UVPtStruct& p2 = points[ i+1 ]; netgen::Segment seg; // ng node ids seg.p1 = prevNgId; seg.p2 = prevNgId = ngNodeId( p2.node, ngMesh, nodeNgIdMap ); // node param on curve seg.epgeominfo[ 0 ].dist = p1.param; seg.epgeominfo[ 1 ].dist = p2.param; // uv on face seg.epgeominfo[ 0 ].u = p1.u; seg.epgeominfo[ 0 ].v = p1.v; seg.epgeominfo[ 1 ].u = p2.u; seg.epgeominfo[ 1 ].v = p2.v; //seg.epgeominfo[ iEnd ].edgenr = edgeID; // = geom.emap.FindIndex(edge); seg.si = faceID; // = geom.fmap.FindIndex (face); seg.edgenr = ngMesh.GetNSeg() + 1; // segment id ngMesh.AddSegment (seg); if ( isSeam ) { if ( helper.GetPeriodicIndex() == 1 ) { seg.epgeominfo[ 0 ].u = otherSeamParam; seg.epgeominfo[ 1 ].u = otherSeamParam; swap (seg.epgeominfo[0].v, seg.epgeominfo[1].v); } else { seg.epgeominfo[ 0 ].v = otherSeamParam; seg.epgeominfo[ 1 ].v = otherSeamParam; swap (seg.epgeominfo[0].u, seg.epgeominfo[1].u); } swap (seg.p1, seg.p2); swap (seg.epgeominfo[0].dist, seg.epgeominfo[1].dist); seg.edgenr = ngMesh.GetNSeg() + 1; // segment id ngMesh.AddSegment (seg); } } } // loop on geomEdge ancestors break; } // case TopAbs_EDGE case TopAbs_FACE: { // FACE // ---------------------- const TopoDS_Face& geomFace = TopoDS::Face( sm->GetSubShape() ); helper.SetSubShape( geomFace ); // Find solids the geomFace bounds int solidID1 = 0, solidID2 = 0; const TopTools_ListOfShape& ancestors = _mesh->GetAncestors( geomFace ); TopTools_ListIteratorOfListOfShape ancestorIt ( ancestors ); for ( ; ancestorIt.More(); ancestorIt.Next() ) { const TopoDS_Shape & solid = ancestorIt.Value(); if ( solid.ShapeType() == TopAbs_SOLID ) { int id = occgeom.somap.FindIndex ( solid ); if ( solidID1 && id != solidID1 ) solidID2 = id; else solidID1 = id; } } faceID++; _faceDescriptors[ faceID ].first = solidID1; _faceDescriptors[ faceID ].second = solidID2; // Orient the face correctly in solidID1 (issue 0020206) bool reverse = false; if ( solidID1 ) { TopoDS_Shape solid = occgeom.somap( solidID1 ); for ( TopExp_Explorer f( solid, TopAbs_FACE ); f.More(); f.Next() ) { if ( geomFace.IsSame( f.Current() )) { reverse = SMESH_Algo::IsReversedSubMesh( TopoDS::Face( f.Current()), helper.GetMeshDS() ); break; } } } // Add surface elements SMDS_ElemIteratorPtr faces = smDS->GetElements(); while ( faces->more() ) { const SMDS_MeshElement* f = faces->next(); if ( f->NbNodes() % 3 != 0 ) { // not triangle for ( ancestorIt.Initialize(ancestors); ancestorIt.More(); ancestorIt.Next() ) if ( ancestorIt.Value().ShapeType() == TopAbs_SOLID ) { sm = _mesh->GetSubMesh( ancestorIt.Value() ); break; } SMESH_ComputeErrorPtr& smError = sm->GetComputeError(); smError.reset( new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH,"Not triangle submesh")); smError->myBadElements.push_back( f ); return false; } netgen::Element2d tri(3); tri.SetIndex ( faceID ); for ( int i = 0; i < 3; ++i ) { const SMDS_MeshNode* node = f->GetNode( i ), * inFaceNode=0; if ( helper.IsSeamShape( node->GetPosition()->GetShapeId() )) if ( helper.IsSeamShape( f->GetNodeWrap( i+1 )->GetPosition()->GetShapeId() )) inFaceNode = f->GetNodeWrap( i-1 ); else inFaceNode = f->GetNodeWrap( i+1 ); gp_XY uv = helper.GetNodeUV( geomFace, node, inFaceNode ); if ( reverse ) { tri.GeomInfoPi(3-i).u = uv.X(); tri.GeomInfoPi(3-i).v = uv.Y(); tri.PNum (3-i) = ngNodeId( node, ngMesh, nodeNgIdMap ); } else { tri.GeomInfoPi(i+1).u = uv.X(); tri.GeomInfoPi(i+1).v = uv.Y(); tri.PNum (i+1) = ngNodeId( node, ngMesh, nodeNgIdMap ); } } ngMesh.AddSurfaceElement (tri); } break; } // case TopAbs_VERTEX: { // VERTEX // -------------------------- SMDS_NodeIteratorPtr nodeIt = smDS->GetNodes(); if ( nodeIt->more() ) ngNodeId( nodeIt->next(), ngMesh, nodeNgIdMap ); break; } default:; } // switch } // loop on submeshes // fill nodeVec nodeVec.resize( ngMesh.GetNP() + 1 ); TNode2IdMap::iterator node_NgId, nodeNgIdEnd = nodeNgIdMap.end(); for ( node_NgId = nodeNgIdMap.begin(); node_NgId != nodeNgIdEnd; ++node_NgId) nodeVec[ node_NgId->second ] = (SMDS_MeshNode*) node_NgId->first; return true; }
static TError AddSegmentsToMesh(netgen::Mesh& ngMesh, OCCGeometry& geom, const TSideVector& wires, SMESH_MesherHelper& helper, vector< const SMDS_MeshNode* > & nodeVec) { // ---------------------------- // Check wires and count nodes // ---------------------------- int nbNodes = 0; for ( int iW = 0; iW < wires.size(); ++iW ) { StdMeshers_FaceSidePtr wire = wires[ iW ]; if ( wire->MissVertexNode() ) return TError (new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH, "Missing nodes on vertices")); const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct(); if ( uvPtVec.size() != wire->NbPoints() ) return TError (new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH, SMESH_Comment("Unexpected nb of points on wire ") << iW << ": " << uvPtVec.size()<<" != "<<wire->NbPoints())); nbNodes += wire->NbSegments(); } nodeVec.reserve( nbNodes ); // ----------------- // Fill netgen mesh // ----------------- // netgen::Box<3> bb = geom.GetBoundingBox(); // bb.Increase (bb.Diam()/10); // ngMesh.SetLocalH (bb.PMin(), bb.PMax(), 0.5); // set grading const int faceID = 1, solidID = 0; ngMesh.AddFaceDescriptor (FaceDescriptor(faceID, solidID, solidID, 0)); for ( int iW = 0; iW < wires.size(); ++iW ) { StdMeshers_FaceSidePtr wire = wires[ iW ]; const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct(); int firstPointID = ngMesh.GetNP() + 1; int edgeID = 1, posID = -2; for ( int i = 0; i < wire->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(); // 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 ); // Add the segment Segment seg; seg.pnums[0] = ngMesh.GetNP(); // ng node id seg.pnums[1] = seg.pnums[0] + 1; // ng node id seg.edgenr = ngMesh.GetNSeg() + 1;// segment id seg.si = faceID; // = geom.fmap.FindIndex (face); for ( int iEnd = 0; iEnd < 2; ++iEnd) { const UVPtStruct& pnt = uvPtVec[ i + iEnd ]; seg.epgeominfo[ iEnd ].dist = pnt.param; // param on curve seg.epgeominfo[ iEnd ].u = pnt.u; seg.epgeominfo[ iEnd ].v = pnt.v; // find out edge id and node parameter on edge bool onVertex = ( pnt.node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX ); if ( onVertex || posShapeID != posID ) { // get edge id double normParam = pnt.normParam; if ( onVertex ) normParam = 0.5 * ( uvPtVec[ i ].normParam + uvPtVec[ i+1 ].normParam ); const TopoDS_Edge& edge = wire->Edge( wire->EdgeIndex( normParam )); edgeID = geom.emap.FindIndex( edge ); posID = posShapeID; if ( onVertex ) // param on curve is different on each of two edges seg.epgeominfo[ iEnd ].dist = helper.GetNodeU( edge, pnt.node ); } seg.epgeominfo[ iEnd ].edgenr = edgeID; // = geom.emap.FindIndex(edge); } 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; } Segment& seg = ngMesh.LineSegment( ngMesh.GetNSeg() ); seg.pnums[1] = firstPointID; } ngMesh.CalcSurfacesOfNode(); return TError(); }