+//--------------------------------------------------------------------------------
+/*!
+ * \brief Retrieve nodes of a cell
+ */
+struct _GetVtkNodes
+{
+ _GetVtkNodes( vtkIdList* nodeIds, SMDS_Mesh* mesh, int vtkCellId, SMDSAbs_EntityType type);
+};
+struct _GetVtkNodesToUNV
+{
+ _GetVtkNodesToUNV( vtkIdList* nodeIds, SMDS_Mesh* mesh, int vtkCellId, SMDSAbs_EntityType type);
+};
+struct _GetVtkNodesPolyh
+{
+ _GetVtkNodesPolyh( vtkIdList* nodeIds, SMDS_Mesh* mesh, int vtkCellId, SMDSAbs_EntityType type);
+};
+
+//--------------------------------------------------------------------------------
+/*!
+ * \brief Iterator on nodes of a cell
+ */
+template< class SMDS_ITERATOR = SMDS_ElemIterator, class GET_VTK_NODES = _GetVtkNodes >
+class SMDS_VtkCellIterator: public SMDS_ITERATOR