From: eap Date: Wed, 23 Apr 2014 11:21:09 +0000 (+0400) Subject: 22568: [CEA 1151] ConvertToQuadratic does not work if a face was not assigned with... X-Git-Tag: V7_4_0rc1~36^2 X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=1071ba77da7f945f7793c8c69a5887d82deb0342;p=modules%2Fsmesh.git 22568: [CEA 1151] ConvertToQuadratic does not work if a face was not assigned with elements Case: both nodes of a segment are on non-connected VERTEXes --- diff --git a/src/SMESH/SMESH_MesherHelper.cxx b/src/SMESH/SMESH_MesherHelper.cxx index f26e758a2..784853234 100644 --- a/src/SMESH/SMESH_MesherHelper.cxx +++ b/src/SMESH/SMESH_MesherHelper.cxx @@ -1436,6 +1436,7 @@ const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1, catch ( Standard_Failure& f ) { // issue 22502 / a node is on VERTEX not belonging to E + // issue 22568 / both nodes are on non-connected VERTEXes return getMediumNodeOnComposedWire(n1,n2,force3d); } } @@ -1535,67 +1536,108 @@ const SMDS_MeshNode* SMESH_MesherHelper::getMediumNodeOnComposedWire(const SMDS_ const SMDS_MeshNode* n2, bool force3d) { - gp_Pnt middle = 0.5 * XYZ(n1) + 0.5 * XYZ(n2); + SMESH_TNodeXYZ p1( n1 ), p2( n2 ); + gp_Pnt middle = 0.5 * p1 + 0.5 * p2; SMDS_MeshNode* n12 = AddNode( middle.X(), middle.Y(), middle.Z() ); // To find position on edge and 3D position for n12, // project to 2 edges and select projection most close to - double u = 0, distMiddleProj = Precision::Infinite(), distXYZ[4]; - int iOkEdge = 0; - TopoDS_Edge edges[2]; + TopoDS_Edge bestEdge; + double u = 0, distMiddleProj = Precision::Infinite(), distXYZ[4], f,l; + + // get shapes under the nodes + TopoDS_Shape shape[2]; + int nbShapes = 0; for ( int is2nd = 0; is2nd < 2; ++is2nd ) { - // get an edge const SMDS_MeshNode* n = is2nd ? n2 : n1; - TopoDS_Shape shape = GetSubShapeByNode( n, GetMeshDS() ); - if ( shape.IsNull() || shape.ShapeType() != TopAbs_EDGE ) - continue; + TopoDS_Shape S = GetSubShapeByNode( n, GetMeshDS() ); + if ( !S.IsNull() ) + shape[ nbShapes++ ] = S; + } + // get EDGEs + vector< TopoDS_Shape > edges; + for ( int iS = 0; iS < nbShapes; ++iS ) + { + switch ( shape[iS].ShapeType() ) { + case TopAbs_EDGE: + { + edges.push_back( shape[iS] ); + break; + } + case TopAbs_VERTEX: + { + TopoDS_Shape edge; + if ( nbShapes == 2 && iS==0 && shape[1-iS].ShapeType() == TopAbs_VERTEX ) + edge = GetCommonAncestor( shape[iS], shape[1-iS], *myMesh, TopAbs_EDGE ); - // project to get U of projection and distance from middle to projection - TopoDS_Edge edge = edges[ is2nd ] = TopoDS::Edge( shape ); - double node2MiddleDist = middle.Distance( XYZ(n) ); - double foundU = GetNodeU( edge, n ); - CheckNodeU( edge, n12, foundU, 2*BRep_Tool::Tolerance(edge), /*force=*/true, distXYZ ); - if ( distXYZ[0] < node2MiddleDist ) + if ( edge.IsNull() ) + { + PShapeIteratorPtr eIt = GetAncestors( shape[iS], *myMesh, TopAbs_EDGE ); + while( const TopoDS_Shape* e = eIt->next() ) + edges.push_back( *e ); + } + break; + } + case TopAbs_FACE: { - distMiddleProj = distXYZ[0]; - u = foundU; - iOkEdge = is2nd; + if ( nbShapes == 1 || shape[1-iS].ShapeType() < TopAbs_EDGE ) + for ( TopExp_Explorer e( shape[iS], TopAbs_EDGE ); e.More(); e.Next() ) + edges.push_back( e.Current() ); + break; + } + default: + continue; } } - if ( Precision::IsInfinite( distMiddleProj )) + // project to get U of projection and distance from middle to projection + for ( size_t iE = 0; iE < edges.size(); ++iE ) { - // both projections failed; set n12 on the edge of n1 with U of a common vertex - TopoDS_Vertex vCommon; - if ( TopExp::CommonVertex( edges[0], edges[1], vCommon )) - u = BRep_Tool::Parameter( vCommon, edges[0] ); - else + const TopoDS_Edge& edge = TopoDS::Edge( edges[ iE ]); + distXYZ[0] = distMiddleProj; + double testU = 0; + CheckNodeU( edge, n12, testU, 2 * BRep_Tool::Tolerance(edge), /*force=*/true, distXYZ ); + if ( distXYZ[0] < distMiddleProj ) { - double f,l, u0 = GetNodeU( edges[0], n1 ); - BRep_Tool::Range( edges[0],f,l ); - u = ( fabs(u0-f) < fabs(u0-l) ) ? f : l; + distMiddleProj = distXYZ[0]; + u = testU; + bestEdge = edge; } - iOkEdge = 0; - distMiddleProj = 0; } - - // move n12 to position of a successfull projection - double tol = BRep_Tool::Tolerance(edges[ iOkEdge ]); - if ( !force3d && distMiddleProj > 2*tol ) + // { + // // both projections failed; set n12 on the edge of n1 with U of a common vertex + // TopoDS_Vertex vCommon; + // if ( TopExp::CommonVertex( edges[0], edges[1], vCommon )) + // u = BRep_Tool::Parameter( vCommon, edges[0] ); + // else + // { + // double f,l, u0 = GetNodeU( edges[0], n1 ); + // BRep_Tool::Range( edges[0],f,l ); + // u = ( fabs(u0-f) < fabs(u0-l) ) ? f : l; + // } + // iOkEdge = 0; + // distMiddleProj = 0; + // } + + if ( !bestEdge.IsNull() ) { - TopLoc_Location loc; double f,l; - Handle(Geom_Curve) curve = BRep_Tool::Curve( edges[iOkEdge],loc,f,l ); - gp_Pnt p = curve->Value( u ); - GetMeshDS()->MoveNode( n12, p.X(), p.Y(), p.Z() ); - } - - //if ( mySetElemOnShape ) node is not elem! - { - int edgeID = GetMeshDS()->ShapeToIndex( edges[iOkEdge] ); - if ( edgeID != n12->getshapeId() ) - GetMeshDS()->UnSetNodeOnShape( n12 ); - GetMeshDS()->SetNodeOnEdge(n12, edgeID, u); + // move n12 to position of a successfull projection + //double tol = BRep_Tool::Tolerance(edges[ iOkEdge ]); + if ( !force3d /*&& distMiddleProj > 2*tol*/ ) + { + TopLoc_Location loc; + Handle(Geom_Curve) curve = BRep_Tool::Curve( bestEdge,loc,f,l ); + gp_Pnt p = curve->Value( u ).Transformed( loc ); + GetMeshDS()->MoveNode( n12, p.X(), p.Y(), p.Z() ); + } + //if ( mySetElemOnShape ) node is not elem! + { + int edgeID = GetMeshDS()->ShapeToIndex( bestEdge ); + if ( edgeID != n12->getshapeId() ) + GetMeshDS()->UnSetNodeOnShape( n12 ); + GetMeshDS()->SetNodeOnEdge(n12, edgeID, u); + } } myTLinkNodeMap.insert( make_pair( SMESH_TLink(n1,n2), n12 ));