- // create mesh
- SMESH::SMESH_Mesh_var newMesh = CreateEmptyMesh();
- SMESH_Mesh_i* newImpl = SMESH::DownCast<SMESH_Mesh_i*>( newMesh );
+ // create mesh if theMeshToAppendTo not provided
+ SMESH::SMESH_Mesh_var newMesh;
+ if ( CORBA::is_nil( theMeshToAppendTo ))
+ newMesh = CreateEmptyMesh();
+ else
+ newMesh = SMESH::SMESH_Mesh::_duplicate( theMeshToAppendTo );
+ SMESH_Mesh_i* newImpl = SMESH::DownCast<SMESH_Mesh_i*>( newMesh );