std::vector<const SMDS_MeshNode*> initNodes( nodes, nodes+nbNodes );
for ( size_t i = 0; i < interlace.size(); ++i )
nodes[i] = initNodes[ interlace[i] ];
std::vector<const SMDS_MeshNode*> initNodes( nodes, nodes+nbNodes );
for ( size_t i = 0; i < interlace.size(); ++i )
nodes[i] = initNodes[ interlace[i] ];