GIGridView

Classes
class	Dune::GridView< ViewTraits >
	Grid view abstract base class. More...

Detailed Description

Though a DUNE grid is hierarchic, one often only needs access to a certain subset of the entities in the grid, e.g., the all entities on a given level or the leaf entities in the hierarchy. These views are provided by an implementation of GridView. Each grid exports a LevelGridView and a LeafGridView, corresponding to the two different subsets (views) described above.

A grid view provides the following functionality:

• The index set for the required subset can be accessed by the indexSet() method.
• A pair of begin() / end() methods provide iterators for each codimension.
• A pair of ibegin() / iend() methods return suitable intersection iterators for a given entity of codimension 0 in the subset.
• For parallel computations, a suitable communicate() method is provided.
• The underlying grid can be accessed through the grid() method.

The default GridViews can be obtained from the grid by calling one of the levelGridView() or leafGridView() methods.