+ OK = true;
+
+ } // loop algos getting an outer wire
+
+ // Try to orient all (if !OK) or only internal wires (issue 0020996) by UV similarity
+
+ if (( !OK || nbEInW1.size() > 1 ) && i_ok_wire_algo > -1 )
+ {
+ // Check that Vec(VV1[0],VV1[1]) in 2D on face1 is the same
+ // as Vec(VV2[0],VV2[1]) on face2
+ double vTol = BRep_Tool::Tolerance( VV1[0] );
+ BRepAdaptor_Surface surface1( face1, false );
+ double vTolUV =
+ surface1.UResolution( vTol ) + surface1.VResolution( vTol ); // let's be tolerant
+ gp_Pnt2d v0f1UV = BRep_Tool::Parameters( VV1[0], face1 );
+ gp_Pnt2d v0f2UV = BRep_Tool::Parameters( VV2[0], face2 );
+ gp_Pnt2d v1f1UV = BRep_Tool::Parameters( VV1[1], face1 );
+ gp_Pnt2d v1f2UV = BRep_Tool::Parameters( VV2[1], face2 );
+ gp_Vec2d v01f1Vec( v0f1UV, v1f1UV );
+ gp_Vec2d v01f2Vec( v0f2UV, v1f2UV );
+ if ( Abs( v01f1Vec.X()-v01f2Vec.X()) < vTolUV &&
+ Abs( v01f1Vec.Y()-v01f2Vec.Y()) < vTolUV )
+ {
+ if ( !OK /*i_ok_wire_algo != 1*/ )
+ {
+ edges1.clear();
+ edges2.clear();
+ SMESH_Block::GetOrderedEdges( face1, edges1, nbEInW1, VV1[0], i_ok_wire_algo);
+ SMESH_Block::GetOrderedEdges( face2, edges2, nbEInW2, VV2[0], i_ok_wire_algo);
+ }
+ gp_XY dUV = v0f2UV.XY() - v0f1UV.XY(); // UV shift between 2 faces
+ //
+ // skip edges of the outer wire (if the outer wire is OK)
+ list< int >::iterator nbE2, nbE1 = nbEInW1.begin();
+ list< TopoDS_Edge >::iterator edge2Beg, edge1Beg = edges1.begin();
+ if ( OK ) std::advance( edge1Beg, *nbE1++ );
+ // reach an end of edges of a current wire1
+ list< TopoDS_Edge >::iterator edge2End, edge1End;
+ //
+ // find corresponding wires of face2
+ for ( int iW1 = OK; nbE1 != nbEInW1.end(); ++nbE1, ++iW1 ) // loop on wires of face1
+ {
+ // reach an end of edges of a current wire1
+ edge1End = edge1Beg;
+ std::advance( edge1End, *nbE1 );
+ // UV on face1 to find on face2
+ v0f1UV = BRep_Tool::Parameters( TopExp::FirstVertex(*edge1Beg,true), face1 );
+ v1f1UV = BRep_Tool::Parameters( TopExp::LastVertex (*edge1Beg,true), face1 );
+ v0f1UV.ChangeCoord() += dUV;
+ v1f1UV.ChangeCoord() += dUV;
+ //
+ // look through wires of face2
+ edge2Beg = edges2.begin();
+ nbE2 = nbEInW2.begin();
+ if ( OK ) std::advance( edge2Beg, *nbE2++ );
+ for ( int iW2 = OK; nbE2 != nbEInW2.end(); ++nbE2, ++iW2 ) // loop on wires of face2
+ {
+ // reach an end of edges of a current wire2
+ edge2End = edge2Beg;
+ std::advance( edge2End, *nbE2 );
+ if ( *nbE1 == *nbE2 && iW2 >= iW1 )
+ {
+ // rotate edge2 untill coincidence with edge1 in 2D
+ int i = *nbE2;
+ while ( i-- > 0 && !sameVertexUV( *edge2Beg, face2, 0, v0f1UV, vTolUV ))
+ // move edge2Beg to place before edge2End
+ edges2.splice( edge2End, edges2, edge2Beg++ );
+
+ if ( sameVertexUV( *edge2Beg, face2, 0, v0f1UV, vTolUV ))
+ {
+ if ( iW1 == 0 ) OK = true; // OK is for the first wire
+ // reverse edges2 if needed
+ if ( !sameVertexUV( *edge2Beg, face2, 1, v1f1UV, vTolUV ))
+ Reverse( edges2 , *nbE2, std::distance( edges2.begin(),edge2Beg ));
+ // put wire2 at a right place within edges2
+ if ( iW1 != iW2 ) {
+ list< TopoDS_Edge >::iterator place2 = edges2.begin();
+ std::advance( place2, std::distance( edges1.begin(), edge1Beg ));
+ edges2.splice( place2, edges2, edge2Beg, edge2End );
+ // move nbE2 as well
+ list< int >::iterator placeNbE2 = nbEInW2.begin();
+ std::advance( placeNbE2, iW1 );
+ nbEInW2.splice( placeNbE2, nbEInW2, nbE2 );
+ }
+ break;
+ }
+ }
+ // prepare to the next wire loop
+ edge2Beg = edge2End;
+ }
+ edge1Beg = edge1End;
+ }
+ }