+ // Propagation Of Distribution
+ //
+ if ( !_mainEdge.IsNull() && _isPropagOfDistribution )
+ {
+ TopoDS_Edge mainEdge = TopoDS::Edge( _mainEdge ); // should not be a reference!
+ _gen->Compute( theMesh, mainEdge, /*aShapeOnly=*/true, /*anUpward=*/true);
+
+ SMESHDS_SubMesh* smDS = theMesh.GetMeshDS()->MeshElements( mainEdge );
+ if ( !smDS )
+ return error("No mesh on the source edge of Propagation Of Distribution");
+ if ( smDS->NbNodes() < 1 )
+ return true; // 1 segment
+
+ vector< double > mainEdgeParams;
+ if ( ! SMESH_Algo::GetNodeParamOnEdge( theMesh.GetMeshDS(), mainEdge, mainEdgeParams ))
+ return error("Bad node parameters on the source edge of Propagation Of Distribution");
+
+ vector< double > segLen( mainEdgeParams.size() - 1 );
+ double totalLen = 0;
+ BRepAdaptor_Curve mainEdgeCurve( mainEdge );
+ for ( size_t i = 1; i < mainEdgeParams.size(); ++i )
+ {
+ segLen[ i-1 ] = GCPnts_AbscissaPoint::Length( mainEdgeCurve,
+ mainEdgeParams[i-1],
+ mainEdgeParams[i]);
+ totalLen += segLen[ i-1 ];
+ }
+ for ( size_t i = 0; i < segLen.size(); ++i )
+ segLen[ i ] *= theLength / totalLen;
+
+ size_t iSeg = theReverse ? segLen.size()-1 : 0;
+ size_t dSeg = theReverse ? -1 : +1;
+ double param = theFirstU;
+ int nbParams = 0;
+ for ( int i = 0, nb = segLen.size()-1; i < nb; ++i, iSeg += dSeg )
+ {
+ GCPnts_AbscissaPoint Discret( theC3d, segLen[ iSeg ], param );
+ if ( !Discret.IsDone() ) break;
+ param = Discret.Parameter();
+ theParams.push_back( param );
+ ++nbParams;
+ }
+ if ( nbParams != segLen.size()-1 )
+ return error( SMESH_Comment("Can't divide into ") << segLen.size() << " segements");
+
+ compensateError( segLen[ theReverse ? segLen.size()-1 : 0 ],
+ segLen[ theReverse ? 0 : segLen.size()-1 ],
+ f, l, theLength, theC3d, theParams, true );
+ return true;
+ }
+
+
