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Reference documentation for deal.II version 9.1.1
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#include <deal.II/grid/tria_iterator_selector.h>
This class implements some types which differ between the dimensions. These are the declarations for the 2D case only. See the Iterators on mesh-like containers module for more information.
A line_iterator
is aliased to an iterator operating on the lines
member variable of a Triangulation<2>
object. An active_line_iterator
only operates on the active lines. raw_line_iterator
objects operate on all lines, used or not. Using active_line_iterators
may not be particularly in 2D useful since it only operates on unrefined lines. However, also refined lines may bound unrefined cells if the neighboring cell is refined once more than the present one.
Similarly to line iterators, quad_iterator
, raw_quad_iterator
and active_quad_iterator
are declared.
To enable the declaration of begin_hex
and the like in Triangulation<[12]>
, the hex_iterators
are declared as iterators over InvalidAccessor. Thus these types exist, but are useless and will certainly make any involuntary use visible.
Since we are in two dimension, the following identities are declared:
Definition at line 139 of file tria_iterator_selector.h.