+
+ if ( OK && nbEInW1.front() > 4 ) // care of a case where faces are closed (23032)
+ {
+ // check if the first edges are seam ones
+ list< TopoDS_Edge >::iterator revSeam1, revSeam2;
+ revSeam1 = std::find( ++edges1.begin(), edges1.end(), edges1.front().Reversed());
+ revSeam2 = edges2.end();
+ if ( revSeam1 != edges1.end() )
+ revSeam2 = std::find( ++edges2.begin(), edges2.end(), edges2.front().Reversed());
+ if ( revSeam2 != edges2.end() ) // two seams detected
+ {
+ bool reverse =
+ std::distance( edges1.begin(), revSeam1 ) != std::distance( edges2.begin(), revSeam2 );
+ if ( !reverse && isClosenessAssoc )
+ {
+ // compare orientations of a non-seam edges using 3D closeness;
+ // look for a non-seam edges
+ list< TopoDS_Edge >::iterator edge1 = ++edges1.begin();
+ list< TopoDS_Edge >::iterator edge2 = ++edges2.begin();
+ for ( ; edge1 != edges1.end(); ++edge1, ++edge2 )
+ {
+ if (( edge1 == revSeam1 ) ||
+ ( SMESH_Algo::isDegenerated( *edge1 )) ||
+ ( std::find( ++edges1.begin(), edges1.end(), edge1->Reversed()) != edges1.end() ))
+ continue;
+ gp_Pnt p1 = BRep_Tool::Pnt( VV1[0] );
+ gp_Pnt p2 = BRep_Tool::Pnt( VV2[0] );
+ gp_Vec vec2to1( p2, p1 );
+
+ gp_Pnt pp1[2], pp2[2];
+ const double r = 0.2345;
+ double f,l;
+ Handle(Geom_Curve) C = BRep_Tool::Curve( *edge1, f,l );
+ pp1[0] = C->Value( f * r + l * ( 1. - r ));
+ pp1[1] = C->Value( l * r + f * ( 1. - r ));
+ if ( edge1->Orientation() == TopAbs_REVERSED )
+ std::swap( pp1[0], pp1[1] );
+ C = BRep_Tool::Curve( *edge2, f,l );
+ if ( C.IsNull() ) return 0;
+ pp2[0] = C->Value( f * r + l * ( 1. - r )).Translated( vec2to1 );
+ pp2[1] = C->Value( l * r + f * ( 1. - r )).Translated( vec2to1 );
+ if ( edge2->Orientation() == TopAbs_REVERSED )
+ std::swap( pp2[0], pp2[1] );
+
+ double dist00 = pp1[0].SquareDistance( pp2[0] );
+ double dist01 = pp1[0].SquareDistance( pp2[1] );
+ reverse = ( dist00 > dist01 );
+ break;
+ }
+ }
+ if ( reverse ) // make a seam counterpart be the first
+ {
+ list< TopoDS_Edge >::iterator outWireEnd = edges2.begin();
+ std::advance( outWireEnd, nbEInW2.front() );
+ edges2.splice( outWireEnd, edges2, edges2.begin(), ++revSeam2 );
+ reverseEdges( edges2 , nbEInW2.front());
+ }
+ }
+ }
