From: eap Date: Wed, 4 Oct 2017 12:33:47 +0000 (+0300) Subject: 23487: EDF 15571 - Mesh with quadratic algo 1D X-Git-Tag: V9_0_0~1^2~12 X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=f757d34e5ab5e6471f7d49c835b6d7b0d58009c8;p=modules%2Fsmesh.git 23487: EDF 15571 - Mesh with quadratic algo 1D Update medium nodes after smoothing --- diff --git a/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx b/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx index dca977adc..994089cfe 100644 --- a/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx +++ b/src/StdMeshers/StdMeshers_Quadrangle_2D.cxx @@ -64,17 +64,15 @@ #include "utilities.h" #include "Utils_ExceptHandlers.hxx" -#ifndef StdMeshers_Array2OfNode_HeaderFile -#define StdMeshers_Array2OfNode_HeaderFile -typedef const SMDS_MeshNode* SMDS_MeshNodePtr; -typedef NCollection_Array2 StdMeshers_Array2OfNode; -#endif +#include -using namespace std; +typedef NCollection_Array2 StdMeshers_Array2OfNode; typedef gp_XY gp_UV; typedef SMESH_Comment TComm; +using namespace std; + //============================================================================= /*! * @@ -1010,14 +1008,14 @@ bool StdMeshers_Quadrangle_2D::IsApplicable( const TopoDS_Shape & aShape, bool t continue; } - int nbNoDegenEdges = 0; + int nbNoDegenEdges = 0, totalNbEdges = 0; TopExp_Explorer eExp( aFace, TopAbs_EDGE ); - for ( ; eExp.More() && nbNoDegenEdges < 3; eExp.Next() ) { + for ( ; eExp.More() && nbNoDegenEdges < 3; eExp.Next(), ++totalNbEdges ) { if ( !SMESH_Algo::isDegenerated( TopoDS::Edge( eExp.Current() ))) ++nbNoDegenEdges; } - if ( toCheckAll && nbNoDegenEdges < 3 ) return false; - if ( !toCheckAll && nbNoDegenEdges >= 3 ) return true; + if ( toCheckAll && ( totalNbEdges < 4 && nbNoDegenEdges < 3 )) return false; + if ( !toCheckAll && ( totalNbEdges >= 4 || nbNoDegenEdges >= 3 )) return true; } return ( toCheckAll && nbFoundFaces != 0 ); } @@ -1139,7 +1137,7 @@ FaceQuadStruct::Ptr StdMeshers_Quadrangle_2D::CheckNbEdges(SMESH_Mesh & } } } - else + else //if ( !myHelper || !myHelper->IsRealSeam( edge )) { sideEdges.push_back( edge ); } @@ -3895,171 +3893,177 @@ void StdMeshers_Quadrangle_2D::smooth (FaceQuadStruct::Ptr quad) { // "smooth" by computing node positions using 3D TFI and further projection - int nbhoriz = quad->iSize; - int nbvertic = quad->jSize; + list< FaceQuadStruct::Ptr >::iterator q = myQuadList.begin(); + for ( ; q != myQuadList.end() ; ++q ) + { + quad = *q; + int nbhoriz = quad->iSize; + int nbvertic = quad->jSize; - SMESH_TNodeXYZ a0( quad->UVPt( 0, 0 ).node ); - SMESH_TNodeXYZ a1( quad->UVPt( nbhoriz-1, 0 ).node ); - SMESH_TNodeXYZ a2( quad->UVPt( nbhoriz-1, nbvertic-1 ).node ); - SMESH_TNodeXYZ a3( quad->UVPt( 0, nbvertic-1 ).node ); + SMESH_TNodeXYZ a0( quad->UVPt( 0, 0 ).node ); + SMESH_TNodeXYZ a1( quad->UVPt( nbhoriz-1, 0 ).node ); + SMESH_TNodeXYZ a2( quad->UVPt( nbhoriz-1, nbvertic-1 ).node ); + SMESH_TNodeXYZ a3( quad->UVPt( 0, nbvertic-1 ).node ); - for (int i = 1; i < nbhoriz-1; i++) - { - SMESH_TNodeXYZ p0( quad->UVPt( i, 0 ).node ); - SMESH_TNodeXYZ p2( quad->UVPt( i, nbvertic-1 ).node ); - for (int j = 1; j < nbvertic-1; j++) + for (int i = 1; i < nbhoriz-1; i++) { - SMESH_TNodeXYZ p1( quad->UVPt( nbhoriz-1, j ).node ); - SMESH_TNodeXYZ p3( quad->UVPt( 0, j ).node ); + SMESH_TNodeXYZ p0( quad->UVPt( i, 0 ).node ); + SMESH_TNodeXYZ p2( quad->UVPt( i, nbvertic-1 ).node ); + for (int j = 1; j < nbvertic-1; j++) + { + SMESH_TNodeXYZ p1( quad->UVPt( nbhoriz-1, j ).node ); + SMESH_TNodeXYZ p3( quad->UVPt( 0, j ).node ); - UVPtStruct& uvp = quad->UVPt( i, j ); + UVPtStruct& uvp = quad->UVPt( i, j ); - gp_Pnt p = myHelper->calcTFI(uvp.x,uvp.y, a0,a1,a2,a3, p0,p1,p2,p3); - gp_Pnt2d uv = surface->NextValueOfUV( uvp.UV(), p, 10*tol ); - gp_Pnt pnew = surface->Value( uv ); + gp_Pnt p = myHelper->calcTFI(uvp.x,uvp.y, a0,a1,a2,a3, p0,p1,p2,p3); + gp_Pnt2d uv = surface->NextValueOfUV( uvp.UV(), p, 10*tol ); + gp_Pnt pnew = surface->Value( uv ); - meshDS->MoveNode( uvp.node, pnew.X(), pnew.Y(), pnew.Z() ); - uvp.u = uv.X(); - uvp.v = uv.Y(); + meshDS->MoveNode( uvp.node, pnew.X(), pnew.Y(), pnew.Z() ); + uvp.u = uv.X(); + uvp.v = uv.Y(); + } } } - return; } + else + { + // Get nodes to smooth - // Get nodes to smooth - - typedef map< const SMDS_MeshNode*, TSmoothNode, TIDCompare > TNo2SmooNoMap; - TNo2SmooNoMap smooNoMap; + typedef map< const SMDS_MeshNode*, TSmoothNode, TIDCompare > TNo2SmooNoMap; + TNo2SmooNoMap smooNoMap; - // fixed nodes - set< const SMDS_MeshNode* > fixedNodes; - for ( size_t i = 0; i < myForcedPnts.size(); ++i ) - { - fixedNodes.insert( myForcedPnts[i].node ); - if ( myForcedPnts[i].node->getshapeId() != myHelper->GetSubShapeID() ) + // fixed nodes + boost::container::flat_set< const SMDS_MeshNode* > fixedNodes; + for ( size_t i = 0; i < myForcedPnts.size(); ++i ) { - TSmoothNode & sNode = smooNoMap[ myForcedPnts[i].node ]; - sNode._uv = myForcedPnts[i].uv; - sNode._xyz = SMESH_TNodeXYZ( myForcedPnts[i].node ); + fixedNodes.insert( myForcedPnts[i].node ); + if ( myForcedPnts[i].node->getshapeId() != myHelper->GetSubShapeID() ) + { + TSmoothNode & sNode = smooNoMap[ myForcedPnts[i].node ]; + sNode._uv = myForcedPnts[i].uv; + sNode._xyz = SMESH_TNodeXYZ( myForcedPnts[i].node ); + } } - } - SMESHDS_SubMesh* fSubMesh = meshDS->MeshElements( quad->face ); - SMDS_NodeIteratorPtr nIt = fSubMesh->GetNodes(); - while ( nIt->more() ) // loop on nodes bound to a FACE - { - const SMDS_MeshNode* node = nIt->next(); - TSmoothNode & sNode = smooNoMap[ node ]; - sNode._uv = myHelper->GetNodeUV( quad->face, node ); - sNode._xyz = SMESH_TNodeXYZ( node ); - if ( fixedNodes.count( node )) - continue; // fixed - no triangles - - // set sNode._triangles - SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator( SMDSAbs_Face ); - while ( fIt->more() ) + SMESHDS_SubMesh* fSubMesh = meshDS->MeshElements( quad->face ); + SMDS_NodeIteratorPtr nIt = fSubMesh->GetNodes(); + while ( nIt->more() ) // loop on nodes bound to a FACE { - const SMDS_MeshElement* face = fIt->next(); - const int nbN = face->NbCornerNodes(); - const int nInd = face->GetNodeIndex( node ); - const int prevInd = myHelper->WrapIndex( nInd - 1, nbN ); - const int nextInd = myHelper->WrapIndex( nInd + 1, nbN ); - const SMDS_MeshNode* prevNode = face->GetNode( prevInd ); - const SMDS_MeshNode* nextNode = face->GetNode( nextInd ); - sNode._triangles.push_back( TTriangle( & smooNoMap[ prevNode ], - & smooNoMap[ nextNode ])); - } - } - // set _uv of smooth nodes on FACE boundary - set< StdMeshers_FaceSide* > sidesOnEdge; - list< FaceQuadStruct::Ptr >::iterator q = myQuadList.begin(); - for ( ; q != myQuadList.end() ; ++q ) - for ( size_t i = 0; i < (*q)->side.size(); ++i ) - if ( ! (*q)->side[i].grid->Edge(0).IsNull() && - //(*q)->nbNodeOut( i ) == 0 && - sidesOnEdge.insert( (*q)->side[i].grid.get() ).second ) + const SMDS_MeshNode* node = nIt->next(); + TSmoothNode & sNode = smooNoMap[ node ]; + sNode._uv = myHelper->GetNodeUV( quad->face, node ); + sNode._xyz = SMESH_TNodeXYZ( node ); + if ( fixedNodes.count( node )) + continue; // fixed - no triangles + + // set sNode._triangles + SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator( SMDSAbs_Face ); + while ( fIt->more() ) { - const vector& uvVec = (*q)->side[i].grid->GetUVPtStruct(); - for ( unsigned j = 0; j < uvVec.size(); ++j ) + const SMDS_MeshElement* face = fIt->next(); + const int nbN = face->NbCornerNodes(); + const int nInd = face->GetNodeIndex( node ); + const int prevInd = myHelper->WrapIndex( nInd - 1, nbN ); + const int nextInd = myHelper->WrapIndex( nInd + 1, nbN ); + const SMDS_MeshNode* prevNode = face->GetNode( prevInd ); + const SMDS_MeshNode* nextNode = face->GetNode( nextInd ); + sNode._triangles.push_back( TTriangle( & smooNoMap[ prevNode ], + & smooNoMap[ nextNode ])); + } + } + // set _uv of smooth nodes on FACE boundary + set< StdMeshers_FaceSide* > sidesOnEdge; + list< FaceQuadStruct::Ptr >::iterator q = myQuadList.begin(); + for ( ; q != myQuadList.end() ; ++q ) + for ( size_t i = 0; i < (*q)->side.size(); ++i ) + if ( ! (*q)->side[i].grid->Edge(0).IsNull() && + //(*q)->nbNodeOut( i ) == 0 && + sidesOnEdge.insert( (*q)->side[i].grid.get() ).second ) { - TSmoothNode & sNode = smooNoMap[ uvVec[j].node ]; - sNode._uv = uvVec[j].UV(); - sNode._xyz = SMESH_TNodeXYZ( uvVec[j].node ); + const vector& uvVec = (*q)->side[i].grid->GetUVPtStruct(); + for ( unsigned j = 0; j < uvVec.size(); ++j ) + { + TSmoothNode & sNode = smooNoMap[ uvVec[j].node ]; + sNode._uv = uvVec[j].UV(); + sNode._xyz = SMESH_TNodeXYZ( uvVec[j].node ); + } } - } - // define reference orientation in 2D - TNo2SmooNoMap::iterator n2sn = smooNoMap.begin(); - for ( ; n2sn != smooNoMap.end(); ++n2sn ) - if ( !n2sn->second._triangles.empty() ) - break; - if ( n2sn == smooNoMap.end() ) return; - const TSmoothNode & sampleNode = n2sn->second; - const bool refForward = ( sampleNode._triangles[0].IsForward( sampleNode._uv )); + // define reference orientation in 2D + TNo2SmooNoMap::iterator n2sn = smooNoMap.begin(); + for ( ; n2sn != smooNoMap.end(); ++n2sn ) + if ( !n2sn->second._triangles.empty() ) + break; + if ( n2sn == smooNoMap.end() ) return; + const TSmoothNode & sampleNode = n2sn->second; + const bool refForward = ( sampleNode._triangles[0].IsForward( sampleNode._uv )); - // Smoothing + // Smoothing - for ( int iLoop = 0; iLoop < 5; ++iLoop ) - { - for ( n2sn = smooNoMap.begin(); n2sn != smooNoMap.end(); ++n2sn ) + for ( int iLoop = 0; iLoop < 5; ++iLoop ) { - TSmoothNode& sNode = n2sn->second; - if ( sNode._triangles.empty() ) - continue; // not movable node + for ( n2sn = smooNoMap.begin(); n2sn != smooNoMap.end(); ++n2sn ) + { + TSmoothNode& sNode = n2sn->second; + if ( sNode._triangles.empty() ) + continue; // not movable node - gp_XY newUV; - bool isValid = false; - bool use3D = ( iLoop > 2 ); // 3 loops in 2D and 2, in 3D + gp_XY newUV; + bool isValid = false; + bool use3D = ( iLoop > 2 ); // 3 loops in 2D and 2, in 3D - if ( use3D ) - { - // compute a new XYZ - gp_XYZ newXYZ (0,0,0); - for ( size_t i = 0; i < sNode._triangles.size(); ++i ) - newXYZ += sNode._triangles[i]._n1->_xyz; - newXYZ /= sNode._triangles.size(); - - // compute a new UV by projection - newUV = surface->NextValueOfUV( sNode._uv, newXYZ, 10*tol ).XY(); - - // check validity of the newUV - for ( size_t i = 0; i < sNode._triangles.size() && isValid; ++i ) - isValid = ( sNode._triangles[i].IsForward( newUV ) == refForward ); - } - if ( !isValid ) - { - // compute a new UV by averaging - newUV.SetCoord(0.,0.); - for ( unsigned i = 0; i < sNode._triangles.size(); ++i ) - newUV += sNode._triangles[i]._n1->_uv; - newUV /= sNode._triangles.size(); - - // check validity of the newUV - isValid = true; - for ( unsigned i = 0; i < sNode._triangles.size() && isValid; ++i ) - isValid = ( sNode._triangles[i].IsForward( newUV ) == refForward ); - } - if ( isValid ) - { - sNode._uv = newUV; - sNode._xyz = surface->Value( newUV ).XYZ(); + if ( use3D ) + { + // compute a new XYZ + gp_XYZ newXYZ (0,0,0); + for ( size_t i = 0; i < sNode._triangles.size(); ++i ) + newXYZ += sNode._triangles[i]._n1->_xyz; + newXYZ /= sNode._triangles.size(); + + // compute a new UV by projection + newUV = surface->NextValueOfUV( sNode._uv, newXYZ, 10*tol ).XY(); + + // check validity of the newUV + for ( size_t i = 0; i < sNode._triangles.size() && isValid; ++i ) + isValid = ( sNode._triangles[i].IsForward( newUV ) == refForward ); + } + if ( !isValid ) + { + // compute a new UV by averaging + newUV.SetCoord(0.,0.); + for ( unsigned i = 0; i < sNode._triangles.size(); ++i ) + newUV += sNode._triangles[i]._n1->_uv; + newUV /= sNode._triangles.size(); + + // check validity of the newUV + isValid = true; + for ( unsigned i = 0; i < sNode._triangles.size() && isValid; ++i ) + isValid = ( sNode._triangles[i].IsForward( newUV ) == refForward ); + } + if ( isValid ) + { + sNode._uv = newUV; + sNode._xyz = surface->Value( newUV ).XYZ(); + } } } - } - // Set new XYZ to the smoothed nodes + // Set new XYZ to the smoothed nodes - for ( n2sn = smooNoMap.begin(); n2sn != smooNoMap.end(); ++n2sn ) - { - TSmoothNode& sNode = n2sn->second; - if ( sNode._triangles.empty() ) - continue; // not movable node + for ( n2sn = smooNoMap.begin(); n2sn != smooNoMap.end(); ++n2sn ) + { + TSmoothNode& sNode = n2sn->second; + if ( sNode._triangles.empty() ) + continue; // not movable node - SMDS_MeshNode* node = const_cast< SMDS_MeshNode*>( n2sn->first ); - gp_Pnt xyz = surface->Value( sNode._uv ); - meshDS->MoveNode( node, xyz.X(), xyz.Y(), xyz.Z() ); + SMDS_MeshNode* node = const_cast< SMDS_MeshNode*>( n2sn->first ); + gp_Pnt xyz = surface->Value( sNode._uv ); + meshDS->MoveNode( node, xyz.X(), xyz.Y(), xyz.Z() ); - // store the new UV - node->SetPosition( SMDS_PositionPtr( new SMDS_FacePosition( sNode._uv.X(), sNode._uv.Y() ))); + // store the new UV + node->SetPosition( SMDS_PositionPtr( new SMDS_FacePosition( sNode._uv.X(), sNode._uv.Y() ))); + } } // Move medium nodes in quadratic mesh @@ -4085,6 +4089,7 @@ void StdMeshers_Quadrangle_2D::smooth (FaceQuadStruct::Ptr quad) meshDS->MoveNode( node, xyz.X(), xyz.Y(), xyz.Z() ); } } + return; } //================================================================================ @@ -4180,12 +4185,18 @@ bool StdMeshers_Quadrangle_2D::check() if ( myHelper->HasSeam() ) for ( int i = 0; i < nbN && !nInFace; ++i ) if ( !myHelper->IsSeamShape( nn[i]->getshapeId() )) + { nInFace = nn[i]; + gp_XY uv = myHelper->GetNodeUV( geomFace, nInFace ); + if ( myHelper->IsOnSeam( uv )) + nInFace = NULL; + } toCheckUV = true; for ( int i = 0; i < nbN; ++i ) uv[ i ] = myHelper->GetNodeUV( geomFace, nn[i], nInFace, &toCheckUV ); + bool isBad = false; switch ( nbN ) { case 4: { @@ -4198,19 +4209,34 @@ bool StdMeshers_Quadrangle_2D::check() if ( sign1 * sign2 < 0 ) continue; // this should not happen } - if ( sign1 * okSign < 0 ) - badFaces.push_back ( f ); + isBad = ( sign1 * okSign < 0 ); break; } case 3: { double sign = getArea( uv[0], uv[1], uv[2] ); - if ( sign * okSign < 0 ) - badFaces.push_back ( f ); + isBad = ( sign * okSign < 0 ); break; } default:; } + + // if ( isBad && myHelper->HasRealSeam() ) + // { + // // detect a case where a face intersects the seam + // for ( int iPar = 1; iPar < 3; ++iPar ) + // if ( iPar & myHelper->GetPeriodicIndex() ) + // { + // double min = uv[0].Coord( iPar ), max = uv[0].Coord( iPar ); + // for ( int i = 1; i < nbN; ++i ) + // { + // min = Min( min, uv[i].Coord( iPar )); + // max = Max( max, uv[i].Coord( iPar )); + // } + // } + // } + if ( isBad ) + badFaces.push_back ( f ); } if ( !badFaces.empty() ) @@ -4264,7 +4290,7 @@ int StdMeshers_Quadrangle_2D::getCorners(const TopoDS_Face& theFace, if ( SMESH_Algo::isDegenerated( prevE )) { list::reverse_iterator edge = ++theWire.rbegin(); - while ( SMESH_Algo::isDegenerated( *edge )) + while ( SMESH_Algo::isDegenerated( *edge ) /*|| helper.IsRealSeam( *edge )*/) ++edge; if ( edge == theWire.rend() ) return false; @@ -4273,7 +4299,7 @@ int StdMeshers_Quadrangle_2D::getCorners(const TopoDS_Face& theFace, list::iterator edge = theWire.begin(); for ( int iE = 0; edge != theWire.end(); ++edge, ++iE ) { - if ( SMESH_Algo::isDegenerated( *edge )) + if ( SMESH_Algo::isDegenerated( *edge ) /*|| helper.IsRealSeam( *edge )*/) { ++theNbDegenEdges; continue;