for ( TopExp_Explorer eF( aSh, TopAbs_FACE ); eF.More(); eF.Next() )
{
const TopoDS_Face& face = TopoDS::Face( eF.Current() );
+ BRepAdaptor_Surface surf( face, false );
+ if ( surf.IsUPeriodic() || surf.IsUClosed() ) {
+ myParIndex |= U_periodic;
+ myPar1[0] = surf.FirstUParameter();
+ myPar2[0] = surf.LastUParameter();
+ }
+ if ( surf.IsVPeriodic() || surf.IsVClosed() ) {
+ myParIndex |= V_periodic;
+ myPar1[1] = surf.FirstVParameter();
+ myPar2[1] = surf.LastVParameter();
+ }
- // if ( surface->IsUPeriodic() || surface->IsVPeriodic() ||
- // surface->IsUClosed() || surface->IsVClosed() )
+ gp_Pnt2d uv1, uv2;
+ for (TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next())
{
- //while ( surface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface )))
- //surface = Handle(Geom_RectangularTrimmedSurface)::DownCast( surface )->BasisSurface();
-
- for (TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next())
+ // look for a "seam" edge, a real seam or an edge on period boundary
+ TopoDS_Edge edge = TopoDS::Edge( exp.Current() );
+ if ( myParIndex )
{
- // look for a seam edge
- TopoDS_Edge edge = TopoDS::Edge( exp.Current() );
- if ( BRep_Tool::IsClosed( edge, face )) {
- // initialize myPar1, myPar2 and myParIndex
- 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) ))
+ BRep_Tool::UVPoints( edge, face, uv1, uv2 );
+ const double du = Abs( uv1.Coord(1) - uv2.Coord(1) );
+ const double dv = Abs( uv1.Coord(2) - uv2.Coord(2) );
+
+ bool isSeam = BRep_Tool::IsClosed( edge, face );
+ if ( isSeam ) // real seam - having two pcurves on face
+ {
+ // pcurve can lie not on pediod boundary (22582, mesh_Quadratic_01/C9)
+ if ( du < dv )
{
double u1 = uv1.Coord(1);
edge.Reverse();
BRep_Tool::UVPoints( edge, face, uv1, uv2 );
double u2 = uv1.Coord(1);
- myParIndex |= U_periodic;
myPar1[0] = Min( u1, u2 );
myPar2[0] = Max( u1, u2 );
}
- else {
+ else
+ {
double v1 = uv1.Coord(2);
edge.Reverse();
BRep_Tool::UVPoints( edge, face, uv1, uv2 );
double v2 = uv1.Coord(2);
- myParIndex |= V_periodic;
myPar1[1] = Min( v1, v2 );
myPar2[1] = Max( v1, v2 );
}
+ }
+ else //if ( !isSeam )
+ {
+ // one pcurve but on period boundary (22772, mesh_Quadratic_01/D1)
+ if (( myParIndex & U_periodic ) && du < Precision::PConfusion() )
+ {
+ isSeam = ( Abs( uv1.Coord(1) - myPar1[0] ) < Precision::PConfusion() ||
+ Abs( uv1.Coord(1) - myPar2[0] ) < Precision::PConfusion() );
+ }
+ else if (( myParIndex & V_periodic ) && dv < Precision::PConfusion() )
+ {
+ isSeam = ( Abs( uv1.Coord(2) - myPar1[1] ) < Precision::PConfusion() ||
+ Abs( uv1.Coord(2) - myPar2[1] ) < Precision::PConfusion() );
+ }
+ }
+ if ( isSeam )
+ {
// store seam shape indices, negative if shape encounters twice
int edgeID = meshDS->ShapeToIndex( edge );
mySeamShapeIds.insert( IsSeamShape( edgeID ) ? -edgeID : edgeID );
mySeamShapeIds.insert( IsSeamShape( vertexID ) ? -vertexID : vertexID );
}
}
-
- // look for a degenerated edge
- if ( SMESH_Algo::isDegenerated( edge )) {
- myDegenShapeIds.insert( meshDS->ShapeToIndex( edge ));
- for ( TopExp_Explorer v( edge, TopAbs_VERTEX ); v.More(); v.Next() )
- myDegenShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
- }
}
- if ( !myDegenShapeIds.empty() && !myParIndex )
- {
- BRepAdaptor_Surface surf( face, false );
- if ( surf.IsUPeriodic() || surf.IsUClosed() ) {
- myParIndex |= U_periodic;
- myPar1[0] = surf.FirstUParameter();
- myPar2[0] = surf.LastUParameter();
- }
- else if ( surf.IsVPeriodic() || surf.IsVClosed() ) {
- myParIndex |= V_periodic;
- myPar1[1] = surf.FirstVParameter();
- myPar2[1] = surf.LastVParameter();
- }
+ // look for a degenerated edge
+ if ( SMESH_Algo::isDegenerated( edge )) {
+ myDegenShapeIds.insert( meshDS->ShapeToIndex( edge ));
+ for ( TopExp_Explorer v( edge, TopAbs_VERTEX ); v.More(); v.Next() )
+ myDegenShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
}
}
}
Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc);
Standard_Boolean isUPeriodic = S->IsUPeriodic();
Standard_Boolean isVPeriodic = S->IsVPeriodic();
+ gp_Pnt2d newUV = uv;
if ( isUPeriodic || isVPeriodic ) {
Standard_Real UF,UL,VF,VL;
S->Bounds(UF,UL,VF,VL);
- if(isUPeriodic)
- uv.SetX( uv.X() + ShapeAnalysis::AdjustToPeriod(uv.X(),UF,UL));
- if(isVPeriodic)
- uv.SetY( uv.Y() + ShapeAnalysis::AdjustToPeriod(uv.Y(),VF,VL));
+ if ( isUPeriodic )
+ newUV.SetX( uv.X() + ShapeAnalysis::AdjustToPeriod(uv.X(),UF,UL));
+ if ( isVPeriodic )
+ newUV.SetY( uv.Y() + ShapeAnalysis::AdjustToPeriod(uv.Y(),VF,VL));
+ }
+ if ( n2 )
+ {
+ gp_Pnt2d uv2 = GetNodeUV( F, n2, 0, check );
+ if ( isUPeriodic && Abs( uv.X()-uv2.X() ) < Abs( newUV.X()-uv2.X() ))
+ newUV.SetX( uv.X() );
+ if ( isVPeriodic && Abs( uv.Y()-uv2.Y() ) < Abs( newUV.Y()-uv2.Y() ))
+ newUV.SetY( uv.Y() );
}
+ uv = newUV;
}
}
else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX)
int shapeID = n->getshapeId();
bool infinit = Precision::IsInfinite( u );
bool zero = ( u == 0. );
- if ( force || toCheckPosOnShape( shapeID ) || infinit || zero )
+ if ( force || infinit || zero || toCheckPosOnShape( shapeID ))
{
TopLoc_Location loc; double f,l;
Handle(Geom_Curve) curve = BRep_Tool::Curve( E,loc,f,l );
gp_Pnt nodePnt = SMESH_TNodeXYZ( n );
if ( !loc.IsIdentity() ) nodePnt.Transform( loc.Transformation().Inverted() );
gp_Pnt curvPnt;
- double dist = u;
+ double dist = 2*tol;
if ( !infinit )
{
curvPnt = curve->Value( u );
//=======================================================================
//function : IsStructured
-//purpose : Return true if 2D mesh on FACE is structured
+//purpose : Return true if 2D mesh on FACE is a structured rectangle
//=======================================================================
bool SMESH_MesherHelper::IsStructured( SMESH_subMesh* faceSM )
return true;
}
+//=======================================================================
+//function : IsDistorted2D
+//purpose : Return true if 2D mesh on FACE is ditorted
+//=======================================================================
+
+bool SMESH_MesherHelper::IsDistorted2D( SMESH_subMesh* faceSM,
+ bool checkUV)
+{
+ if ( !faceSM || faceSM->GetSubShape().ShapeType() != TopAbs_FACE )
+ return false;
+
+ bool haveBadFaces = false;
+
+ SMESH_MesherHelper helper( *faceSM->GetFather() );
+ helper.SetSubShape( faceSM->GetSubShape() );
+
+ const TopoDS_Face& F = TopoDS::Face( faceSM->GetSubShape() );
+ SMESHDS_SubMesh* smDS = helper.GetMeshDS()->MeshElements( F );
+ if ( !smDS || smDS->NbElements() == 0 ) return false;
+
+ SMDS_ElemIteratorPtr faceIt = smDS->GetElements();
+ double prevArea2D = 0;
+ vector< const SMDS_MeshNode* > nodes;
+ vector< gp_XY > uv;
+ bool* toCheckUV = checkUV ? & checkUV : 0;
+ while ( faceIt->more() && !haveBadFaces )
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+
+ // get nodes
+ nodes.resize( face->NbCornerNodes() );
+ SMDS_MeshElement::iterator n = face->begin_nodes();
+ for ( size_t i = 0; i < nodes.size(); ++n, ++i )
+ nodes[ i ] = *n;
+
+ // avoid elems on degenarate shapes as UV on them can be wrong
+ if ( helper.HasDegeneratedEdges() )
+ {
+ bool isOnDegen = false;
+ for ( size_t i = 0; ( i < nodes.size() && !isOnDegen ); ++i )
+ isOnDegen = helper.IsDegenShape( nodes[ i ]->getshapeId() );
+ if ( isOnDegen )
+ continue;
+ }
+ // prepare to getting UVs
+ const SMDS_MeshNode* inFaceNode = 0;
+ if ( helper.HasSeam() ) {
+ for ( size_t i = 0; ( i < nodes.size() && !inFaceNode ); ++i )
+ if ( !helper.IsSeamShape( nodes[ i ]->getshapeId() ))
+ inFaceNode = nodes[ i ];
+ if ( !inFaceNode )
+ continue;
+ }
+ // get UVs
+ uv.resize( nodes.size() );
+ for ( size_t i = 0; i < nodes.size(); ++i )
+ uv[ i ] = helper.GetNodeUV( F, nodes[ i ], inFaceNode, toCheckUV );
+
+ // compare orientation of triangles
+ for ( int iT = 0, nbT = nodes.size()-2; iT < nbT; ++iT )
+ {
+ gp_XY v1 = uv[ iT+1 ] - uv[ 0 ];
+ gp_XY v2 = uv[ iT+2 ] - uv[ 0 ];
+ double area2D = v2 ^ v1;
+ if (( haveBadFaces = ( area2D * prevArea2D < 0 )))
+ break;
+ prevArea2D = area2D;
+ }
+ }
+
+ return haveBadFaces;
+}
+
//================================================================================
/*!
* \brief Find out elements orientation on a geometrical face
(shape.ShapeType() == TopAbs_COMPOUND && aMesh->GetMeshDS()->IsGroupOfSubShapes( shape ));
}
+//=======================================================================
+//function : IsBlock
+//purpose :
+//=======================================================================
+
+bool SMESH_MesherHelper::IsBlock( const TopoDS_Shape& shape )
+{
+ if ( shape.IsNull() )
+ return false;
+
+ TopoDS_Shell shell;
+ TopExp_Explorer exp( shape, TopAbs_SHELL );
+ if ( !exp.More() ) return false;
+ shell = TopoDS::Shell( exp.Current() );
+ if ( exp.Next(), exp.More() ) return false;
+
+ TopoDS_Vertex v;
+ TopTools_IndexedMapOfOrientedShape map;
+ return SMESH_Block::FindBlockShapes( shell, v, v, map );
+}
+
+
//================================================================================
/*!
* \brief Return maximal tolerance of shape
