Header für Hierarchical Iterator

[[Imported from SVN: r538]]

grid/uggrid/uggridhieriterator.hh

+// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+// vi: set et ts=4 sw=2 sts=2:
+#ifndef __DUNE_UGHIERITERATOR_HH__
+#define __DUNE_UGHIERITERATOR_HH__
+
+//**********************************************************************
+//
+// --UGGridHierarchicIterator
+// --HierarchicIterator
+/*!
+   Mesh entities of codimension 0 ("elements") allow to visit all entities of
+   codimension 0 obtained through nested, hierarchic refinement of the entity.
+   Iteration over this set of entities is provided by the HIerarchicIterator,
+   starting from a given entity.
+   This is redundant but important for memory efficient implementations of unstru
+   hierarchically refined meshes.
+ */
+
+template<int dim, int dimworld>
+class UGGridHierarchicIterator :
+  public HierarchicIteratorDefault <dim,dimworld, UGCtype,
+      UGGridHierarchicIterator,UGGridEntity>
+{
+public:
+
+#if 1
+
+#if 0
+  //! the normal Constructor
+  UGGridHierarchicIterator(UGGrid<dim,dimworld> &grid,
+                           ALBERT TRAVERSE_STACK *travStack, int actLevel, int maxLevel);
+#endif
+
+  //! the default Constructor
+  UGGridHierarchicIterator(UGGrid<dim,dimworld> &grid,
+                           int actLevel,int maxLevel);
+#else
+  //! the normal Constructor
+  UGGridHierarchicIterator(UGGrid<dim,dimworld> &grid,
+                           ALBERT TRAVERSE_STACK *travStack, int travLevel);
+
+  //! the default Constructor
+  UGGridHierarchicIterator(UGGrid<dim,dimworld> &grid);
+#endif
+
+  //! prefix increment
+  UGGridHierarchicIterator& operator ++();
+
+  //! postfix increment
+  UGGridHierarchicIterator& operator ++(int i);
+
+  //! equality
+  bool operator== (const UGGridHierarchicIterator& i) const;
+
+  //! inequality
+  bool operator!= (const UGGridHierarchicIterator& i) const;
+
+  //! dereferencing
+  UGGridEntity<0,dim,dimworld>& operator*();
+
+  //! arrow
+  UGGridEntity<0,dim,dimworld>* operator->();
+
+private:
+  //! implement with virtual element
+  UGGridEntity<0,dim,dimworld> virtualEntity_;
+
+  //! know the grid were im comming from
+  UGGrid<dim,dimworld> &grid_;
+
+  //! the actual Level of this Hierarichic Iterator
+  int level_;
+
+  //! max level to go down
+  //int maxlevel_;
+
+#if 0
+  //! we need this for Albert traversal, and we need ManageTravStack, which
+  //! does count References when copied
+  ALBERT ManageTravStack manageStack_;
+
+  //! The nessesary things for Albert
+  ALBERT EL_INFO * recursiveTraverse(ALBERT TRAVERSE_STACK * stack);
+#endif
+
+  //! make empty HierarchicIterator
+  void makeIterator();
+};
+
+
+#endif