X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=src%2FSMESH%2FSMESH_MesherHelper.cxx;h=13b06a3965960dc8f883e8f0f3f48ab8f360bca5;hp=47c21bcb0f54d6519d41a1c0c6a87c251c26fc5f;hb=9357f5c87098aff2b95b754d69f66c76d2df9c24;hpb=da57c650709f16f8f621907f6d0192d5f3144b30 diff --git a/src/SMESH/SMESH_MesherHelper.cxx b/src/SMESH/SMESH_MesherHelper.cxx index 47c21bcb0..13b06a396 100644 --- a/src/SMESH/SMESH_MesherHelper.cxx +++ b/src/SMESH/SMESH_MesherHelper.cxx @@ -1,4 +1,4 @@ -// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE +// Copyright (C) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE // // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN, // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS @@ -19,6 +19,7 @@ // // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com // + // File: SMESH_MesherHelper.cxx // Created: 15.02.06 15:22:41 // Author: Sergey KUUL @@ -57,12 +58,15 @@ #include +using namespace std; + #define RETURN_BAD_RESULT(msg) { MESSAGE(msg); return false; } namespace { gp_XYZ XYZ(const SMDS_MeshNode* n) { return gp_XYZ(n->X(), n->Y(), n->Z()); } + enum { U_periodic = 1, V_periodic = 2 }; } //================================================================================ @@ -72,11 +76,24 @@ namespace { //================================================================================ SMESH_MesherHelper::SMESH_MesherHelper(SMESH_Mesh& theMesh) - : myPar1(0), myPar2(0), myParIndex(0), myMesh(&theMesh), myShapeID(0), myCreateQuadratic(false) + : myParIndex(0), myMesh(&theMesh), myShapeID(0), myCreateQuadratic(false) { + myPar1[0] = myPar2[0] = myPar1[1] = myPar2[1] = 0; mySetElemOnShape = ( ! myMesh->HasShapeToMesh() ); } +//======================================================================= +//function : ~SMESH_MesherHelper +//purpose : +//======================================================================= + +SMESH_MesherHelper::~SMESH_MesherHelper() +{ + TID2Projector::iterator i_proj = myFace2Projector.begin(); + for ( ; i_proj != myFace2Projector.end(); ++i_proj ) + delete i_proj->second; +} + //======================================================================= //function : IsQuadraticSubMesh //purpose : Check submesh for given shape: if all elements on this shape @@ -179,6 +196,7 @@ void SMESH_MesherHelper::SetSubShape(const TopoDS_Shape& aSh) } SMESHDS_Mesh* meshDS = GetMeshDS(); myShapeID = meshDS->ShapeToIndex(aSh); + myParIndex = 0; // treatment of periodic faces for ( TopExp_Explorer eF( aSh, TopAbs_FACE ); eF.More(); eF.Next() ) @@ -193,20 +211,18 @@ void SMESH_MesherHelper::SetSubShape(const TopoDS_Shape& aSh) const TopoDS_Edge& edge = TopoDS::Edge( exp.Current() ); if ( BRep_Tool::IsClosed( edge, face )) { // initialize myPar1, myPar2 and myParIndex - if ( mySeamShapeIds.empty() ) { - gp_Pnt2d uv1, uv2; - BRep_Tool::UVPoints( edge, face, uv1, uv2 ); - if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) )) - { - myParIndex = 1; // U periodic - myPar1 = surface.FirstUParameter(); - myPar2 = surface.LastUParameter(); - } - else { - myParIndex = 2; // V periodic - myPar1 = surface.FirstVParameter(); - myPar2 = surface.LastVParameter(); - } + gp_Pnt2d uv1, uv2; + BRep_Tool::UVPoints( edge, face, uv1, uv2 ); + if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) )) + { + myParIndex |= U_periodic; + myPar1[0] = surface.FirstUParameter(); + myPar2[0] = surface.LastUParameter(); + } + else { + myParIndex |= V_periodic; + myPar1[1] = surface.FirstVParameter(); + myPar2[1] = surface.LastVParameter(); } // store seam shape indices, negative if shape encounters twice int edgeID = meshDS->ShapeToIndex( edge ); @@ -299,13 +315,24 @@ void SMESH_MesherHelper::AddTLinkNode(const SMDS_MeshNode* n1, gp_Pnt2d SMESH_MesherHelper::GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const { - double p1 = uv1.Coord( myParIndex ); - double p2 = uv2.Coord( myParIndex ); - double p3 = ( Abs( p1 - myPar1 ) < Abs( p1 - myPar2 )) ? myPar2 : myPar1; - if ( Abs( p2 - p1 ) > Abs( p2 - p3 )) - p1 = p3; gp_Pnt2d result = uv1; - result.SetCoord( myParIndex, p1 ); + for ( int i = U_periodic; i <= V_periodic ; ++i ) + { + if ( myParIndex & i ) + { + double p1 = uv1.Coord( i ); + double dp1 = Abs( p1-myPar1[i-1]), dp2 = Abs( p1-myPar2[i-1]); + if ( myParIndex == i || + dp1 < ( myPar2[i-1] - myPar2[i-1] ) / 100. || + dp2 < ( myPar2[i-1] - myPar2[i-1] ) / 100. ) + { + double p2 = uv2.Coord( i ); + double p1Alt = ( dp1 < dp2 ) ? myPar2[i-1] : myPar1[i-1]; + if ( Abs( p2 - p1 ) > Abs( p2 - p1Alt )) + result.SetCoord( i, p1Alt ); + } + } + } return result; } @@ -319,7 +346,7 @@ gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F, const SMDS_MeshNode* n2, bool* check) const { - gp_Pnt2d uv( 1e100, 1e100 ); + gp_Pnt2d uv( Precision::Infinite(), Precision::Infinite() ); const SMDS_PositionPtr Pos = n->GetPosition(); bool uvOK = false; if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE) @@ -404,6 +431,7 @@ gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F, } } else { + uvOK = false; TopTools_ListIteratorOfListOfShape it( myMesh->GetAncestors( V )); for ( ; it.More(); it.Next() ) { if ( it.Value().ShapeType() == TopAbs_EDGE ) { @@ -413,6 +441,7 @@ gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F, if ( !C2d.IsNull() ) { double u = ( V == TopExp::FirstVertex( edge ) ) ? f : l; uv = C2d->Value( u ); + uvOK = true; break; } } @@ -448,10 +477,13 @@ bool SMESH_MesherHelper::CheckNodeUV(const TopoDS_Face& F, Handle(Geom_Surface) surface = BRep_Tool::Surface( F,loc ); gp_Pnt nodePnt = XYZ( n ); if ( !loc.IsIdentity() ) nodePnt.Transform( loc.Transformation().Inverted() ); - if ( nodePnt.Distance( surface->Value( uv.X(), uv.Y() )) > tol ) + if ( Precision::IsInfinite( uv.X() ) || + Precision::IsInfinite( uv.Y() ) || + nodePnt.Distance( surface->Value( uv.X(), uv.Y() )) > tol ) { // uv incorrect, project the node to surface - GeomAPI_ProjectPointOnSurf projector( nodePnt, surface, tol ); + GeomAPI_ProjectPointOnSurf& projector = GetProjector( F, loc, tol ); + projector.Perform( nodePnt ); if ( !projector.IsDone() || projector.NbPoints() < 1 ) { MESSAGE( "SMESH_MesherHelper::CheckNodeUV() failed to project" ); @@ -474,6 +506,78 @@ bool SMESH_MesherHelper::CheckNodeUV(const TopoDS_Face& F, return true; } +//======================================================================= +//function : GetProjector +//purpose : Return projector intitialized by given face without location, which is returned +//======================================================================= + +GeomAPI_ProjectPointOnSurf& SMESH_MesherHelper::GetProjector(const TopoDS_Face& F, + TopLoc_Location& loc, + double tol ) const +{ + Handle(Geom_Surface) surface = BRep_Tool::Surface( F,loc ); + int faceID = GetMeshDS()->ShapeToIndex( F ); + TID2Projector& i2proj = const_cast< TID2Projector&>( myFace2Projector ); + TID2Projector::iterator i_proj = i2proj.find( faceID ); + if ( i_proj == i2proj.end() ) + { + if ( tol == 0 ) tol = BRep_Tool::Tolerance( F ); + double U1, U2, V1, V2; + surface->Bounds(U1, U2, V1, V2); + GeomAPI_ProjectPointOnSurf* proj = new GeomAPI_ProjectPointOnSurf(); + proj->Init( surface, U1, U2, V1, V2, tol ); + i_proj = i2proj.insert( make_pair( faceID, proj )).first; + } + return *( i_proj->second ); +} + +namespace +{ + gp_XY AverageUV(const gp_XY& uv1, const gp_XY& uv2) { return ( uv1 + uv2 ) / 2.; } + gp_XY_FunPtr(Added); // define gp_XY_Added pointer to function calling gp_XY::Added(gp_XY) + gp_XY_FunPtr(Subtracted); +} + +//======================================================================= +//function : applyIn2D +//purpose : Perform given operation on two 2d points in parameric space of given surface. +// It takes into account period of the surface. Use gp_XY_FunPtr macro +// to easily define pointer to function of gp_XY class. +//======================================================================= + +gp_XY SMESH_MesherHelper::applyIn2D(const Handle(Geom_Surface)& surface, + const gp_XY& uv1, + const gp_XY& uv2, + xyFunPtr fun, + const bool resultInPeriod) +{ + Standard_Boolean isUPeriodic = surface.IsNull() ? false : surface->IsUPeriodic(); + Standard_Boolean isVPeriodic = surface.IsNull() ? false : surface->IsVPeriodic(); + if ( !isUPeriodic && !isVPeriodic ) + return fun(uv1,uv2); + + // move uv2 not far than half-period from uv1 + double u2 = + uv2.X()+(isUPeriodic ? ShapeAnalysis::AdjustByPeriod(uv2.X(),uv1.X(),surface->UPeriod()) :0); + double v2 = + uv2.Y()+(isVPeriodic ? ShapeAnalysis::AdjustByPeriod(uv2.Y(),uv1.Y(),surface->VPeriod()) :0); + + // execute operation + gp_XY res = fun( uv1, gp_XY(u2,v2) ); + + // move result within period + if ( resultInPeriod ) + { + Standard_Real UF,UL,VF,VL; + surface->Bounds(UF,UL,VF,VL); + if ( isUPeriodic ) + res.SetX( res.X() + ShapeAnalysis::AdjustToPeriod(res.X(),UF,UL)); + if ( isVPeriodic ) + res.SetY( res.Y() + ShapeAnalysis::AdjustToPeriod(res.Y(),VF,VL)); + } + + return res; +} //======================================================================= //function : GetMiddleUV //purpose : Return middle UV taking in account surface period @@ -483,34 +587,7 @@ gp_XY SMESH_MesherHelper::GetMiddleUV(const Handle(Geom_Surface)& surface, const gp_XY& p1, const gp_XY& p2) { - if ( surface.IsNull() ) - return 0.5 * ( p1 + p2 ); - //checking if surface is periodic - Standard_Real UF,UL,VF,VL; - surface->Bounds(UF,UL,VF,VL); - - Standard_Real u,v; - Standard_Boolean isUPeriodic = surface->IsUPeriodic(); - if(isUPeriodic) { - Standard_Real UPeriod = surface->UPeriod(); - Standard_Real p2x = p2.X()+ShapeAnalysis::AdjustByPeriod(p2.X(),p1.X(),UPeriod); - Standard_Real pmid = (p1.X()+p2x)/2.; - u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,UF,UL); - } - else { - u= (p1.X()+p2.X())/2.; - } - Standard_Boolean isVPeriodic = surface->IsVPeriodic(); - if(isVPeriodic) { - Standard_Real VPeriod = surface->VPeriod(); - Standard_Real p2y = p2.Y()+ShapeAnalysis::AdjustByPeriod(p2.Y(),p1.Y(),VPeriod); - Standard_Real pmid = (p1.Y()+p2y)/2.; - v = pmid+ShapeAnalysis::AdjustToPeriod(pmid,VF,VL); - } - else { - v = (p1.Y()+p2.Y())/2.; - } - return gp_XY( u,v ); + return applyIn2D( surface, p1, p2, & AverageUV ); } //======================================================================= @@ -674,9 +751,11 @@ const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1, if ( uvOK[0] && uvOK[1] ) { if ( IsDegenShape( Pos1->GetShapeId() )) - uv[0].SetCoord( myParIndex, uv[1].Coord( myParIndex )); + if ( myParIndex & U_periodic ) uv[0].SetCoord( 1, uv[1].Coord( 1 )); + else uv[0].SetCoord( 2, uv[1].Coord( 2 )); else if ( IsDegenShape( Pos2->GetShapeId() )) - uv[1].SetCoord( myParIndex, uv[0].Coord( myParIndex )); + if ( myParIndex & U_periodic ) uv[1].SetCoord( 1, uv[0].Coord( 1 )); + else uv[1].SetCoord( 2, uv[0].Coord( 2 )); TopLoc_Location loc; Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc); @@ -730,7 +809,7 @@ const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1, CheckNodeU( E, n12, U, BRep_Tool::Tolerance( E ), /*force=*/true); meshDS->SetNodeOnEdge(n12, edgeID, U); } - else + else if ( myShapeID > 1 ) { meshDS->SetNodeInVolume(n12, myShapeID); } @@ -1093,244 +1172,63 @@ bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap, const TopoDS_Edge& theBaseEdge, SMESHDS_Mesh* theMesh) { - // get vertices of theBaseEdge - TopoDS_Vertex vfb, vlb, vft; // first and last, bottom and top vertices - TopoDS_Edge eFrw = TopoDS::Edge( theBaseEdge.Oriented( TopAbs_FORWARD )); - TopExp::Vertices( eFrw, vfb, vlb ); - - // find the other edges of theFace and orientation of e1 - TopoDS_Edge e1, e2, eTop; - bool rev1, CumOri = false; - TopExp_Explorer exp( theFace, TopAbs_EDGE ); - int nbEdges = 0; - for ( ; exp.More(); exp.Next() ) { - if ( ++nbEdges > 4 ) { - return false; // more than 4 edges in theFace - } - TopoDS_Edge e = TopoDS::Edge( exp.Current() ); - if ( theBaseEdge.IsSame( e )) - continue; - TopoDS_Vertex vCommon; - if ( !TopExp::CommonVertex( theBaseEdge, e, vCommon )) - eTop = e; - else if ( vCommon.IsSame( vfb )) { - e1 = e; - vft = TopExp::LastVertex( e1, CumOri ); - rev1 = vfb.IsSame( vft ); - if ( rev1 ) - vft = TopExp::FirstVertex( e1, CumOri ); - } - else - e2 = e; - } - if ( nbEdges < 4 ) { - return false; // less than 4 edges in theFace - } - if ( e2.IsNull() && vfb.IsSame( vlb )) - e2 = e1; - - // submeshes corresponding to shapes - SMESHDS_SubMesh* smFace = theMesh->MeshElements( theFace ); - SMESHDS_SubMesh* smb = theMesh->MeshElements( theBaseEdge ); - SMESHDS_SubMesh* smt = theMesh->MeshElements( eTop ); - SMESHDS_SubMesh* sm1 = theMesh->MeshElements( e1 ); - SMESHDS_SubMesh* sm2 = theMesh->MeshElements( e2 ); - SMESHDS_SubMesh* smVfb = theMesh->MeshElements( vfb ); - SMESHDS_SubMesh* smVlb = theMesh->MeshElements( vlb ); - SMESHDS_SubMesh* smVft = theMesh->MeshElements( vft ); - if (!smFace || !smb || !smt || !sm1 || !sm2 || !smVfb || !smVlb || !smVft ) { - RETURN_BAD_RESULT( "NULL submesh " <NbNodes() != smt->NbNodes() || sm1->NbNodes() != sm2->NbNodes() ) { - RETURN_BAD_RESULT(" Diff nb of nodes on opposite edges" ); - } - if (smVfb->NbNodes() != 1 || smVlb->NbNodes() != 1 || smVft->NbNodes() != 1) { - RETURN_BAD_RESULT("Empty submesh of vertex"); - } - // define whether mesh is quadratic - bool isQuadraticMesh = false; - SMDS_ElemIteratorPtr eIt = smFace->GetElements(); - if ( !eIt->more() ) { - RETURN_BAD_RESULT("No elements on the face"); - } - const SMDS_MeshElement* e = eIt->next(); - isQuadraticMesh = e->IsQuadratic(); - - if ( sm1->NbNodes() * smb->NbNodes() != smFace->NbNodes() ) { - // check quadratic case - if ( isQuadraticMesh ) { - // what if there are quadrangles and triangles mixed? -// int n1 = sm1->NbNodes()/2; -// int n2 = smb->NbNodes()/2; -// int n3 = sm1->NbNodes() - n1; -// int n4 = smb->NbNodes() - n2; -// int nf = sm1->NbNodes()*smb->NbNodes() - n3*n4; -// if( nf != smFace->NbNodes() ) { -// MESSAGE( "Wrong nb face nodes: " << -// sm1->NbNodes()<<" "<NbNodes()<<" "<NbNodes()); -// return false; -// } - } - else { - RETURN_BAD_RESULT( "Wrong nb face nodes: " << - sm1->NbNodes()<<" "<NbNodes()<<" "<NbNodes()); - } + SMESHDS_SubMesh* faceSubMesh = theMesh->MeshElements( theFace ); + if ( !faceSubMesh || faceSubMesh->NbElements() == 0 ) + return false; + + // get nodes on theBaseEdge sorted by param on edge and initialize theParam2ColumnMap with them + + map< double, const SMDS_MeshNode*> sortedBaseNodes; + if ( !SMESH_Algo::GetSortedNodesOnEdge( theMesh, theBaseEdge,/*noMedium=*/true, sortedBaseNodes) + || sortedBaseNodes.size() < 2 ) + return false; + + int nbRows = faceSubMesh->NbElements() / ( sortedBaseNodes.size()-1 ) + 1; + map< double, const SMDS_MeshNode*>::iterator u_n = sortedBaseNodes.begin(); + double f = u_n->first, range = sortedBaseNodes.rbegin()->first - f; + for ( ; u_n != sortedBaseNodes.end(); u_n++ ) + { + double par = ( u_n->first - f ) / range; + vector& nCol = theParam2ColumnMap[ par ]; + nCol.resize( nbRows ); + nCol[0] = u_n->second; } - // IJ size - int vsize = sm1->NbNodes() + 2; - int hsize = smb->NbNodes() + 2; - if(isQuadraticMesh) { - vsize = vsize - sm1->NbNodes()/2 -1; - hsize = hsize - smb->NbNodes()/2 -1; - } - - // load nodes from theBaseEdge - - std::set loadedNodes; - const SMDS_MeshNode* nullNode = 0; - - std::vector & nVecf = theParam2ColumnMap[ 0.]; - nVecf.resize( vsize, nullNode ); - loadedNodes.insert( nVecf[ 0 ] = smVfb->GetNodes()->next() ); - - std::vector & nVecl = theParam2ColumnMap[ 1.]; - nVecl.resize( vsize, nullNode ); - loadedNodes.insert( nVecl[ 0 ] = smVlb->GetNodes()->next() ); - - double f, l; - BRep_Tool::Range( eFrw, f, l ); - double range = l - f; - SMDS_NodeIteratorPtr nIt = smb->GetNodes(); - const SMDS_MeshNode* node; - while ( nIt->more() ) { - node = nIt->next(); - if(IsMedium(node, SMDSAbs_Edge)) - continue; - const SMDS_EdgePosition* pos = - dynamic_cast( node->GetPosition().get() ); - if ( !pos ) { - return false; - } - double u = ( pos->GetUParameter() - f ) / range; - std::vector & nVec = theParam2ColumnMap[ u ]; - nVec.resize( vsize, nullNode ); - loadedNodes.insert( nVec[ 0 ] = node ); - } - if ( theParam2ColumnMap.size() != hsize ) { - RETURN_BAD_RESULT( "Wrong node positions on theBaseEdge" ); - } - - // load nodes from e1 - - std::map< double, const SMDS_MeshNode*> sortedNodes; // sort by param on edge - nIt = sm1->GetNodes(); - while ( nIt->more() ) { - node = nIt->next(); - if(IsMedium(node)) - continue; - const SMDS_EdgePosition* pos = - dynamic_cast( node->GetPosition().get() ); - if ( !pos ) { - return false; - } - sortedNodes.insert( std::make_pair( pos->GetUParameter(), node )); - } - loadedNodes.insert( nVecf[ vsize - 1 ] = smVft->GetNodes()->next() ); - std::map< double, const SMDS_MeshNode*>::iterator u_n = sortedNodes.begin(); - int row = rev1 ? vsize - 1 : 0; - int dRow = rev1 ? -1 : +1; - for ( ; u_n != sortedNodes.end(); u_n++ ) { - row += dRow; - loadedNodes.insert( nVecf[ row ] = u_n->second ); - } - - // try to load the rest nodes - - // get all faces from theFace - TIDSortedElemSet allFaces, foundFaces; - eIt = smFace->GetElements(); - while ( eIt->more() ) { - const SMDS_MeshElement* e = eIt->next(); - if ( e->GetType() == SMDSAbs_Face ) - allFaces.insert( e ); - } - // Starting from 2 neighbour nodes on theBaseEdge, look for a face - // the nodes belong to, and between the nodes of the found face, - // look for a not loaded node considering this node to be the next - // in a column of the starting second node. Repeat, starting - // from nodes next to the previous starting nodes in their columns, - // and so on while a face can be found. Then go the the next pair - // of nodes on theBaseEdge. - TParam2ColumnMap::iterator par_nVec_1 = theParam2ColumnMap.begin(); - TParam2ColumnMap::iterator par_nVec_2 = par_nVec_1; - // loop on columns - int col = 0; - for ( par_nVec_2++; par_nVec_2 != theParam2ColumnMap.end(); par_nVec_1++, par_nVec_2++ ) { - col++; - row = 0; - const SMDS_MeshNode* n1 = par_nVec_1->second[ row ]; - const SMDS_MeshNode* n2 = par_nVec_2->second[ row ]; - const SMDS_MeshElement* face = 0; - bool lastColOnClosedFace = ( nVecf[ row ] == n2 ); - do { - // look for a face by 2 nodes - face = SMESH_MeshEditor::FindFaceInSet( n1, n2, allFaces, foundFaces ); - if ( face ) { - int nbFaceNodes = face->NbNodes(); - if ( face->IsQuadratic() ) - nbFaceNodes /= 2; - if ( nbFaceNodes>4 ) { - RETURN_BAD_RESULT(" Too many nodes in a face: " << nbFaceNodes ); - } - // look for a not loaded node of the - bool found = false; - const SMDS_MeshNode* n3 = 0; // a node defferent from n1 and n2 - for ( int i = 0; i < nbFaceNodes && !found; ++i ) { - node = face->GetNode( i ); - found = loadedNodes.insert( node ).second; - if ( !found && node != n1 && node != n2 ) - n3 = node; - } - if ( lastColOnClosedFace && row + 1 < vsize ) { - node = nVecf[ row + 1 ]; - found = ( face->GetNodeIndex( node ) >= 0 ); - } - if ( found ) { - if ( ++row > vsize - 1 ) { - RETURN_BAD_RESULT( "Too many nodes in column "<< col <<": "<< row+1); - } - par_nVec_2->second[ row ] = node; - foundFaces.insert( face ); - n2 = node; - if ( nbFaceNodes==4 ) { - n1 = par_nVec_1->second[ row ]; - } - } - else if ( nbFaceNodes==3 && n3 == par_nVec_1->second[ row + 1 ] ) { - n1 = n3; - } - else { - RETURN_BAD_RESULT( "Not quad mesh, column "<< col ); - } + + // fill theParam2ColumnMap column by column by passing from nodes on + // theBaseEdge up via mesh faces on theFace + + TParam2ColumnMap::iterator par_nVec_2 = theParam2ColumnMap.begin(); + TParam2ColumnMap::iterator par_nVec_1 = par_nVec_2++; + TIDSortedElemSet emptySet, avoidSet; + for ( ; par_nVec_2 != theParam2ColumnMap.end(); ++par_nVec_1, ++par_nVec_2 ) + { + vector& nCol1 = par_nVec_1->second; + vector& nCol2 = par_nVec_2->second; + + int i1, i2, iRow = 0; + const SMDS_MeshNode *n1 = nCol1[0], *n2 = nCol2[0]; + // find face sharing node n1 and n2 and belonging to faceSubMesh + while ( const SMDS_MeshElement* face = + SMESH_MeshEditor::FindFaceInSet( n1, n2, emptySet, avoidSet, &i1, &i2)) + { + if ( faceSubMesh->Contains( face )) + { + int nbNodes = face->IsQuadratic() ? face->NbNodes()/2 : face->NbNodes(); + if ( nbNodes != 4 ) + return false; + n1 = face->GetNode( (i2+2) % 4 ); // opposite corner of quadrangle face + n2 = face->GetNode( (i1+2) % 4 ); + if ( ++iRow >= nbRows ) + return false; + nCol1[ iRow ] = n1; + nCol2[ iRow ] = n2; + avoidSet.clear(); } + avoidSet.insert( face ); } - while ( face && n1 && n2 ); - - if ( row < vsize - 1 ) { - MESSAGE( "Too few nodes in column "<< col <<": "<< row+1); - MESSAGE( "Base node 1: "<< par_nVec_1->second[0]); - MESSAGE( "Base node 2: "<< par_nVec_2->second[0]); - if ( n1 ) { MESSAGE( "Current node 1: "<< n1); } - else { MESSAGE( "Current node 1: NULL"); } - if ( n2 ) { MESSAGE( "Current node 2: "<< n2); } - else { MESSAGE( "Current node 2: NULL"); } - MESSAGE( "first base node: "<< theParam2ColumnMap.begin()->second[0]); - MESSAGE( "last base node: "<< theParam2ColumnMap.rbegin()->second[0]); - return false; - } - } // loop on columns - + if ( iRow + 1 < nbRows ) // compact if necessary + nCol1.resize( iRow + 1 ), nCol2.resize( iRow + 1 ); + } return true; } @@ -1352,6 +1250,65 @@ int SMESH_MesherHelper::NbAncestors(const TopoDS_Shape& shape, return ancestors.Extent(); } +//======================================================================= +//function : GetSubShapeOri +//purpose : Return orientation of sub-shape in the main shape +//======================================================================= + +TopAbs_Orientation SMESH_MesherHelper::GetSubShapeOri(const TopoDS_Shape& shape, + const TopoDS_Shape& subShape) +{ + TopAbs_Orientation ori = TopAbs_Orientation(-1); + if ( !shape.IsNull() && !subShape.IsNull() ) + { + TopExp_Explorer e( shape, subShape.ShapeType() ); + if ( shape.Orientation() >= TopAbs_INTERNAL ) // TopAbs_INTERNAL or TopAbs_EXTERNAL + e.Init( shape.Oriented(TopAbs_FORWARD), subShape.ShapeType() ); + for ( ; e.More(); e.Next()) + if ( subShape.IsSame( e.Current() )) + break; + if ( e.More() ) + ori = e.Current().Orientation(); + } + return ori; +} + +//======================================================================= +//function : IsSubShape +//purpose : +//======================================================================= + +bool SMESH_MesherHelper::IsSubShape( const TopoDS_Shape& shape, + const TopoDS_Shape& mainShape ) +{ + if ( !shape.IsNull() && !mainShape.IsNull() ) + { + for ( TopExp_Explorer exp( mainShape, shape.ShapeType()); + exp.More(); + exp.Next() ) + if ( shape.IsSame( exp.Current() )) + return true; + } + SCRUTE((shape.IsNull())); + SCRUTE((mainShape.IsNull())); + return false; +} + +//======================================================================= +//function : IsSubShape +//purpose : +//======================================================================= + +bool SMESH_MesherHelper::IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh ) +{ + if ( shape.IsNull() || !aMesh ) + return false; + return + aMesh->GetMeshDS()->ShapeToIndex( shape ) || + // PAL16202 + shape.ShapeType() == TopAbs_COMPOUND && aMesh->GetMeshDS()->IsGroupOfSubShapes( shape ); +} + //======================================================================= //function : IsQuadraticMesh //purpose : Check mesh without geometry for: if all elements on this shape are quadratic, @@ -1393,7 +1350,8 @@ SMESH_MesherHelper:: MType SMESH_MesherHelper::IsQuadraticMesh() double SMESH_MesherHelper::GetOtherParam(const double param) const { - return fabs(param-myPar1) < fabs(param-myPar2) ? myPar2 : myPar1; + int i = myParIndex & U_periodic ? 0 : 1; + return fabs(param-myPar1[i]) < fabs(param-myPar2[i]) ? myPar2[i] : myPar1[i]; } //======================================================================= @@ -1504,8 +1462,11 @@ namespace { // Structures used by FixQuadraticElements() mutable vector< const QLink* > _sides; mutable bool _sideIsAdded[4]; // added in chain of links gp_Vec _normal; +#ifdef _DEBUG_ + mutable const SMDS_MeshElement* _face; +#endif - QFace( const vector< const QLink*>& links ); + QFace( const vector< const QLink*>& links, const SMDS_MeshElement* face=0 ); void SetVolume(const SMDS_MeshElement* v) const { _volumes[ _volumes[0] ? 1 : 0 ] = v; } @@ -1519,16 +1480,16 @@ namespace { // Structures used by FixQuadraticElements() for (int i=0; i<_sides.size(); ++i ) if ( _sides[i] == side ) return i; return -1; } - bool GetLinkChain( int iSide, TChain& chain, SMDS_TypeOfPosition pos, int& error) const; + bool GetLinkChain( int iSide, TChain& chain, SMDS_TypeOfPosition pos, int& err) const; - bool GetLinkChain( TChainLink& link, TChain& chain, SMDS_TypeOfPosition pos, int& error) const + bool GetLinkChain( TChainLink& link, TChain& chain, SMDS_TypeOfPosition pos, int& err) const { int i = LinkIndex( link._qlink ); if ( i < 0 ) return true; _sideIsAdded[i] = true; link.SetFace( this ); // continue from opposite link - return GetLinkChain( (i+2)%_sides.size(), chain, pos, error ); + return GetLinkChain( (i+2)%_sides.size(), chain, pos, err ); } bool IsBoundary() const { return !_volumes[1]; } @@ -1538,7 +1499,8 @@ namespace { // Structures used by FixQuadraticElements() const TChainLink& avoidLink, TLinkInSet * notBoundaryLink = 0, const SMDS_MeshNode* nodeToContain = 0, - bool * isAdjacentUsed = 0) const; + bool * isAdjacentUsed = 0, + int nbRecursionsLeft = -1) const; TLinkInSet GetLinkByNode( const TLinkSet& links, const TChainLink& avoidLink, @@ -1592,7 +1554,7 @@ namespace { // Structures used by FixQuadraticElements() */ //================================================================================ - QFace::QFace( const vector< const QLink*>& links ) + QFace::QFace( const vector< const QLink*>& links, const SMDS_MeshElement* face ) { _volumes[0] = _volumes[1] = 0; _sides = links; @@ -1613,6 +1575,10 @@ namespace { // Structures used by FixQuadraticElements() _normal /= sqrt( normSqSize ); else _normal.SetCoord(1e-33,0,0); + +#ifdef _DEBUG_ + _face = face; +#endif } //================================================================================ /*! @@ -1635,14 +1601,18 @@ namespace { // Structures used by FixQuadraticElements() if ( _sides.size() != 4 ) { // triangle - visit all my continous faces MSGBEG( *this ); - for ( int i = 0; i < _sides.size(); ++i ) { - if ( !_sideIsAdded[i] && _sides[i] ) { - _sideIsAdded[i]=true; - TChain::iterator chLink = chain.insert( chain.begin(), TChainLink(_sides[i])); - chLink->SetFace( this ); - if ( _sides[i]->MediumPos() >= pos ) - if ( const QFace* f = _sides[i]->GetContinuesFace( this )) - f->GetLinkChain( *chLink, chain, pos, error ); + list< const QFace* > faces( 1, this ); + for (list< const QFace* >::iterator fIt = faces.begin(); fIt != faces.end(); ++fIt ) { + const QFace* face = *fIt; + for ( int i = 0; i < face->_sides.size(); ++i ) { + if ( !face->_sideIsAdded[i] && face->_sides[i] ) { + face->_sideIsAdded[i] = true; + TChain::iterator chLink = chain.insert( chain.begin(), TChainLink(face->_sides[i])); + chLink->SetFace( face ); + if ( face->_sides[i]->MediumPos() >= pos ) + if ( const QFace* contFace = face->_sides[i]->GetContinuesFace( face )) + faces.push_back( contFace ); + } } } if ( error < ERR_TRI ) @@ -1659,7 +1629,7 @@ namespace { // Structures used by FixQuadraticElements() chLink->SetFace( this ); MSGBEG( *this ); - // propagate from rectangle to neighbour faces + // propagate from quadrangle to neighbour faces if ( link->MediumPos() >= pos ) { int nbLinkFaces = link->_faces.size(); if ( nbLinkFaces == 4 || nbLinkFaces < 4 && link->OnBoundary()) { @@ -1689,6 +1659,7 @@ namespace { // Structures used by FixQuadraticElements() * \param nodeToContain - node the returned link must contain; if provided, search * also performed on adjacent faces * \param isAdjacentUsed - returns true if link is found in adjacent faces + * \param nbRecursionsLeft - to limit recursion */ //================================================================================ @@ -1696,7 +1667,8 @@ namespace { // Structures used by FixQuadraticElements() const TChainLink& avoidLink, TLinkInSet * notBoundaryLink, const SMDS_MeshNode* nodeToContain, - bool * isAdjacentUsed) const + bool * isAdjacentUsed, + int nbRecursionsLeft) const { TLinkInSet linksEnd = links.end(), boundaryLink = linksEnd; @@ -1709,6 +1681,8 @@ namespace { // Structures used by FixQuadraticElements() continue; TLinkInSet link = links.find( _sides[iL] ); if ( link == linksEnd ) continue; + if ( (*link)->MediumPos() > SMDS_TOP_FACE ) + continue; // We work on faces here, don't go into a volume // check link if ( link->IsBoundary() ) { @@ -1725,19 +1699,21 @@ namespace { // Structures used by FixQuadraticElements() if ( boundaryLink != linksEnd ) break; } - if ( boundaryLink == linksEnd && nodeToContain ) // cellect adjacent faces + if ( boundaryLink == linksEnd && nodeToContain ) // collect adjacent faces if ( const QFace* adj = link->NextFace( this )) if ( adj->Contains( nodeToContain )) adjacentFaces.push_back( make_pair( adj, link )); } if ( isAdjacentUsed ) *isAdjacentUsed = false; - if ( boundaryLink == linksEnd && nodeToContain ) // check adjacent faces + if ( boundaryLink == linksEnd && nodeToContain && nbRecursionsLeft) // check adjacent faces { + if ( nbRecursionsLeft < 0 ) + nbRecursionsLeft = nodeToContain->NbInverseElements(); TFaceLinkList::iterator adj = adjacentFaces.begin(); for ( ; boundaryLink == linksEnd && adj != adjacentFaces.end(); ++adj ) - boundaryLink = adj->first->GetBoundaryLink( links, *(adj->second), - 0, nodeToContain, isAdjacentUsed); + boundaryLink = adj->first->GetBoundaryLink( links, *(adj->second), 0, nodeToContain, + isAdjacentUsed, nbRecursionsLeft-1); if ( isAdjacentUsed ) *isAdjacentUsed = true; } return boundaryLink; @@ -1841,6 +1817,8 @@ namespace { // Structures used by FixQuadraticElements() int iL1 = (iL + 1) % 3, iL2 = (iL + 2) % 3; // indices of the two other links of triangle TLinkInSet link1 = theLinks.find( _sides[iL1] ); TLinkInSet link2 = theLinks.find( _sides[iL2] ); + if ( link1 == theLinks.end() || link2 == theLinks.end() ) + return thePrevLen; const QFace* f1 = link1->NextFace( this ); // adjacent faces const QFace* f2 = link2->NextFace( this ); @@ -2360,6 +2338,13 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) hasRectFaces = hasRectFaces || ( volTool.GetVolumeType() == SMDS_VolumeTool::QUAD_HEXA || volTool.GetVolumeType() == SMDS_VolumeTool::QUAD_PENTA ); +#ifdef _DEBUG_ + if ( nbN == 6 ) + pFace->_face = GetMeshDS()->FindFace(faceNodes[0],faceNodes[2],faceNodes[4]); + else + pFace->_face = GetMeshDS()->FindFace(faceNodes[0],faceNodes[2], + faceNodes[4],faceNodes[6] ); +#endif } } set< QLink >::iterator pLink = links.begin(); @@ -2402,7 +2387,7 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) // not treat boundary of volumic submesh int isInside = ( elemType == SMDSAbs_Volume && volumeOnly ) ? 1 : 0; for ( ; isInside < 2; ++isInside ) { - MSG( "--------------- LOOP " << isInside << " ------------------"); + MSG( "--------------- LOOP (inside=" << isInside << ") ------------------"); SMDS_TypeOfPosition pos = isInside ? SMDS_TOP_3DSPACE : SMDS_TOP_FACE; for ( pFace = faces.begin(); pFace != faces.end(); ++pFace ) { @@ -2419,18 +2404,18 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) if ( !pFace->GetLinkChain( dir+2, rawChain, pos, error ) && error ==ERR_UNKNOWN ) continue; vector< TChain > chains; - if ( error == ERR_OK ) { // chains contains continues rectangles + if ( error == ERR_OK ) { // chain contains continues rectangles chains.resize(1); chains[0].splice( chains[0].begin(), rawChain ); } - else if ( error == ERR_TRI ) { // chains contains continues triangles + else if ( error == ERR_TRI ) { // chain contains continues triangles TSplitTriaResult res = splitTrianglesIntoChains( rawChain, chains, pos ); - if ( res != _OK ) { // not rectangles split into triangles + if ( res != _OK ) { // not quadrangles split into triangles fixTriaNearBoundary( rawChain, *this ); break; } } - else if ( error == ERR_PRISM ) { // side faces of prisms + else if ( error == ERR_PRISM ) { // quadrangle side faces of prisms fixPrism( rawChain ); break; } @@ -2475,16 +2460,20 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) // compute node displacement of end links in parametric space of face const SMDS_MeshNode* nodeOnFace = (*(++chain.begin()))->_mediumNode; TopoDS_Shape f = GetSubShapeByNode( nodeOnFace, GetMeshDS() ); - if ( !f.IsNull() && f.ShapeType() == TopAbs_FACE ) { + if ( !f.IsNull() && f.ShapeType() == TopAbs_FACE ) + { face = TopoDS::Face( f ); - for ( int is1 = 0; is1 < 2; ++is1 ) { // move0 or move1 + Handle(Geom_Surface) surf = BRep_Tool::Surface(face,loc); + for ( int is1 = 0; is1 < 2; ++is1 ) // move0 or move1 + { TChainLink& link = is1 ? chain.back() : chain.front(); + gp_XY uvm = GetNodeUV( face, link->_mediumNode, nodeOnFace, &checkUV); gp_XY uv1 = GetNodeUV( face, link->node1(), nodeOnFace, &checkUV); gp_XY uv2 = GetNodeUV( face, link->node2(), nodeOnFace, &checkUV); - gp_XY uvm = GetNodeUV( face, link->_mediumNode, nodeOnFace, &checkUV); - gp_XY uvMove = uvm - GetMiddleUV( BRep_Tool::Surface(face,loc), uv1, uv2); - if ( is1 ) move1.SetCoord( uvMove.X(), uvMove.Y(), 0 ); - else move0.SetCoord( uvMove.X(), uvMove.Y(), 0 ); + gp_XY uv12 = GetMiddleUV( surf, uv1, uv2); + // uvMove = uvm - uv12 + gp_XY uvMove = applyIn2D(surf, uvm, uv12, gp_XY_Subtracted, /*inPeriod=*/false); + ( is1 ? move1 : move0 ).SetCoord( uvMove.X(), uvMove.Y(), 0 ); } if ( move0.SquareMagnitude() < straightTol2 && move1.SquareMagnitude() < straightTol2 ) { @@ -2529,9 +2518,10 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) } else { // compute 3D displacement by 2D one + Handle(Geom_Surface) s = BRep_Tool::Surface(face,loc); gp_XY oldUV = GetNodeUV( face, (*link1)->_mediumNode, 0, &checkUV); - gp_XY newUV = oldUV + gp_XY( move.X(), move.Y() ); - gp_Pnt newPnt = BRep_Tool::Surface(face,loc)->Value( newUV.X(), newUV.Y()); + gp_XY newUV = applyIn2D( s, oldUV, gp_XY( move.X(),move.Y()), gp_XY_Added); + gp_Pnt newPnt = s->Value( newUV.X(), newUV.Y()); move = gp_Vec( XYZ((*link1)->_mediumNode), newPnt.Transformed(loc) ); #ifdef _DEBUG_ if ( (XYZ((*link1)->node1()) - XYZ((*link1)->node2())).SquareModulus() < @@ -2568,3 +2558,46 @@ void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly) } } } + +//======================================================================= +/*! + * \brief Iterator on ancestors of the given type + */ +//======================================================================= + +struct TAncestorsIterator : public SMDS_Iterator +{ + TopTools_ListIteratorOfListOfShape _ancIter; + TopAbs_ShapeEnum _type; + TAncestorsIterator( const TopTools_ListOfShape& ancestors, TopAbs_ShapeEnum type) + : _ancIter( ancestors ), _type( type ) + { + if ( _ancIter.More() && _ancIter.Value().ShapeType() != _type ) next(); + } + virtual bool more() + { + return _ancIter.More(); + } + virtual const TopoDS_Shape* next() + { + const TopoDS_Shape* s = _ancIter.More() ? & _ancIter.Value() : 0; + if ( _ancIter.More() ) + for ( _ancIter.Next(); _ancIter.More(); _ancIter.Next()) + if ( _ancIter.Value().ShapeType() == _type ) + break; + return s; + } +}; + +//======================================================================= +/*! + * \brief Return iterator on ancestors of the given type + */ +//======================================================================= + +PShapeIteratorPtr SMESH_MesherHelper::GetAncestors(const TopoDS_Shape& shape, + const SMESH_Mesh& mesh, + TopAbs_ShapeEnum ancestorType) +{ + return PShapeIteratorPtr( new TAncestorsIterator( mesh.GetAncestors(shape), ancestorType)); +}