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Vertex-On-Cell (-Facet, ...) Iterator Concept

Description
A Vertex-On-Cell Iterator refines the concept of Grid Incidence Iterator : It allows to access all vertices incident to a given cell. Thus, it can also be seen as a Grid Sequence Iterator over the Vertex Grid Range of that cell.

Similar iterators can be defined for other anchor elements, most notably facets. For these, just replace cell with facet.

Refinement of
Incidence Iterator
Notation
V is a model of Vertex-On-Cell Iterator
v is an object of type V
c is an object of type V::Cell
Associated types
The types V::element_type and V::anchor_type can now be named more specifically. The names from the incidence iterator concept remain valid.
Name Expression Description
Vertex type V::Vertex synomym to V::element_type
Cell type V::Cell the cell type V operates upon,

model of Grid Cell

Anchor type V::anchor_type synonym to V::Cell,

model of Vertex Grid Range

Valid Expressions
Name Expression Type requirements return type
anchor cell v.TheCell();   V::Cell const&
Expression semantics
Name Expression Precondition Semantics Postcondition
anchor cell Cell C = v.TheCell(); v is not singular get the anchor of v c is a valid cell;

c == v.TheCell()

Refinements
Models
Complex2D::VertexOnCellIterator, defined in vertex-on-cell2d-it.h.
Notes
See also
Grid   Grid Range  
Grid Element   Grid Vertex   Grid Cell  
Grid Sequence Iterator   Grid Incidence Iterator  

Guntram Berti

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