From: eap Date: Tue, 25 Jan 2011 15:06:34 +0000 (+0000) Subject: 0021140: EDF 1759 SMESH: Netgen1D2D fails on subshape X-Git-Tag: Start_BR_19998_21191~11 X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=881022af01e258e7f6db04a22de5a54ebdbefb54;p=plugins%2Fnetgenplugin.git 0021140: EDF 1759 SMESH: Netgen1D2D fails on subshape Fix work on edges computed with the Composed Segment discretizer --- diff --git a/src/NETGENPlugin/NETGENPlugin_Mesher.cxx b/src/NETGENPlugin/NETGENPlugin_Mesher.cxx index f36f61a..a431ad1 100644 --- a/src/NETGENPlugin/NETGENPlugin_Mesher.cxx +++ b/src/NETGENPlugin/NETGENPlugin_Mesher.cxx @@ -35,13 +35,14 @@ #include #include #include +#include #include #include #include +#include #include #include #include -#include #include #include @@ -95,7 +96,7 @@ using namespace std; #endif // dump elements added to ng mesh -//#define DUMP_SEGMENTS +// #define DUMP_SEGMENTS //#define DUMP_TRIANGLES //#define DUMP_TRIANGLES_SCRIPT "/tmp/trias.py" //!< debug addIntVerticesInSolids() @@ -395,6 +396,80 @@ namespace } return node_id->second; } + + //================================================================================ + /*! + * \brief Return computed EDGEs connected to the given one + */ + //================================================================================ + + list< TopoDS_Edge > getConnectedEdges( const TopoDS_Edge& edge, + const TopoDS_Face& face, + const set< SMESH_subMesh* > & computedSM, + const SMESH_MesherHelper& helper ) + { + // get ordered EDGEs + TopoDS_Vertex v1; + list< TopoDS_Edge > edges; + list< int > nbEdgesInWire; + int nbWires = SMESH_Block::GetOrderedEdges( face, v1, edges, nbEdgesInWire); + + // find within + list< TopoDS_Edge >::iterator eItFwd = edges.begin(); + for ( ; eItFwd != edges.end(); ++eItFwd ) + if ( edge.IsSame( *eItFwd )) + break; + if ( eItFwd == edges.end()) return list< TopoDS_Edge>(); + + // find not computed or not connected EDGEs around + + list< TopoDS_Edge >::iterator eItBack = eItFwd, ePrev; + TopoDS_Vertex vCommon; + + // put edges after at head + while ( edges.back() != *eItFwd ) + edges.splice( edges.begin(), edges, --edges.end() ); + + // search backward + while ( eItBack != edges.begin() ) + { + ePrev = eItBack; + --eItBack; + bool connected = TopExp::CommonVertex( *ePrev, *eItBack, vCommon ); + bool computed = helper.GetMesh()->GetSubMesh( *eItBack )->IsMeshComputed(); + if ( !connected || !computed ) + { + // move edges from head to tail + while ( edges.begin() != eItBack ) + edges.splice( edges.end(), edges, edges.begin() ); + edges.erase( eItBack ); + break; + } + } + // search forward + ePrev = eItFwd; + while ( ++eItFwd != edges.end() ) + { + bool connected = TopExp::CommonVertex( *ePrev, *eItFwd, vCommon ); + bool computed = helper.GetMesh()->GetSubMesh( *eItFwd )->IsMeshComputed(); + if ( !connected || !computed ) + { + edges.erase( eItFwd, edges.end() ); + break; + } + ePrev = eItFwd; + } + if ( edges.front() != edges.back() ) + { + // assure that the 1st vertex is meshed + TopoDS_Edge eLast = edges.back(); + while ( !SMESH_Algo::VertexNode( TopExp::FirstVertex( edges.front(), 1), helper.GetMeshDS()) + && + edges.front() != eLast ) + edges.splice( edges.end(), edges, edges.begin() ); + } + return edges; + } } //================================================================================ @@ -414,6 +489,8 @@ bool NETGENPlugin_Mesher::fillNgMesh(const netgen::OCCGeometry& occgeom, nodeNgIdMap.insert( make_pair( nodeVec[i], i )); TopTools_MapOfShape visitedShapes; + map< SMESH_subMesh*, set< int > > visitedEdgeSM2Faces; + set< SMESH_subMesh* > computedSM( meshedSM.begin(), meshedSM.end() ); SMESH_MesherHelper helper (*_mesh); @@ -435,38 +512,49 @@ bool NETGENPlugin_Mesher::fillNgMesh(const netgen::OCCGeometry& occgeom, // ---------------------- TopoDS_Edge geomEdge = TopoDS::Edge( sm->GetSubShape() ); if ( geomEdge.Orientation() >= TopAbs_INTERNAL ) - geomEdge.Orientation( TopAbs_FORWARD ); // isuue 0020676 + geomEdge.Orientation( TopAbs_FORWARD ); // issue 0020676 - // Add ng segments for each not meshed face the edge bounds - TopTools_MapOfShape visitedAncestors; + // Add ng segments for each not meshed FACE the EDGE bounds PShapeIteratorPtr fIt = helper.GetAncestors( geomEdge, *sm->GetFather(), TopAbs_FACE ); while ( const TopoDS_Shape * anc = fIt->next() ) { - if ( !visitedAncestors.Add( *anc )) continue; - TopoDS_Face face = TopoDS::Face( *anc ); - if ( face.Orientation() >= TopAbs_INTERNAL ) - face.Orientation( TopAbs_FORWARD ); // isuue 0020676 - - int faceID = occgeom.fmap.FindIndex( face ); + int faceID = occgeom.fmap.FindIndex( *anc ); if ( faceID < 1 ) continue; // meshed face + if ( visitedEdgeSM2Faces[ sm ].count( faceID )) + continue; // already treated EDGE - // find out orientation of geomEdge within face - TopAbs_Orientation fOri = helper.GetSubShapeOri( face, geomEdge ); + TopoDS_Face face = TopoDS::Face( occgeom.fmap( faceID )); + if ( face.Orientation() >= TopAbs_INTERNAL ) + face.Orientation( TopAbs_FORWARD ); // issue 0020676 - // get all nodes from geomEdge - bool isForwad = ( fOri == geomEdge.Orientation() ); + // get all meshed EDGEs of the FACE connected to geomEdge (issue 0021140) + helper.SetSubShape( face ); + list< TopoDS_Edge > edges = getConnectedEdges( geomEdge, face, computedSM, helper ); + + // find out orientation of within + TopoDS_Edge eNotSeam = edges.front(); + if ( helper.HasSeam() ) + { + list< TopoDS_Edge >::iterator eIt = edges.begin(); + while ( helper.IsRealSeam( *eIt )) ++eIt; + if ( eIt != edges.end() ) + eNotSeam = *eIt; + } + TopAbs_Orientation fOri = helper.GetSubShapeOri( face, eNotSeam ); + bool isForwad = ( fOri == eNotSeam.Orientation() ); + + // get all nodes from connected bool isQuad = smDS->NbElements() ? smDS->GetElements()->next()->IsQuadratic() : false; - StdMeshers_FaceSide fSide( face, geomEdge, _mesh, isForwad, isQuad ); + StdMeshers_FaceSide fSide( face, edges, _mesh, isForwad, isQuad ); const vector& 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 ); + for ( int iE = 0; iE < fSide.NbEdges(); ++iE ) + visitedEdgeSM2Faces[ helper.GetMesh()->GetSubMesh( fSide.Edge(iE )) ].insert( faceID ); + +// double otherSeamParam = 0; + bool isSeam = false; // add segments @@ -477,6 +565,15 @@ bool NETGENPlugin_Mesher::fillNgMesh(const netgen::OCCGeometry& occgeom, const UVPtStruct& p1 = points[ i ]; const UVPtStruct& p2 = points[ i+1 ]; +// if ( helper.HasSeam() && +// p1.node->getshapeId() != p2.node->getshapeId() && +// p2.node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE ) +// { +// isSeam = helper.IsRealSeam( p2.node->getshapeId() ); +// if ( isSeam ) +// otherSeamParam = helper.GetOtherParam( helper.GetPeriodicIndex() == 1 ? p2.u : p2.v ); +// } + netgen::Segment seg; // ng node ids seg[0] = prevNgId; @@ -505,26 +602,26 @@ bool NETGENPlugin_Mesher::fillNgMesh(const netgen::OCCGeometry& occgeom, << "\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 + //<< "\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; + << "\tp1 uv: " << seg.epgeominfo[ 1 ].u <<", "<< seg.epgeominfo[ 1 ].v << endl; + //<< "\tp1 edge: " << seg.epgeominfo[ 1 ].edgenr << endl; #endif 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[0], seg[1]); - swap (seg.epgeominfo[0].dist, seg.epgeominfo[1].dist); - seg.edgenr = ngMesh.GetNSeg() + 1; // segment id - ngMesh.AddSegment (seg); +// 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[0], seg[1]); +// swap (seg.epgeominfo[0].dist, seg.epgeominfo[1].dist); +// seg.edgenr = ngMesh.GetNSeg() + 1; // segment id +// ngMesh.AddSegment (seg); } else if ( fOri == TopAbs_INTERNAL ) {