## CGAL::Triangulation_hierarchy_vertex_base_2<Vb>

### Definition

The class Triangulation_hierarchy_vertex_base_2<Vb> is designed to be used as a vertex base class of a triangulation plugged into a Triangulation_hierarchy_2<Tr>.

It is a model of the concept TriangulationHierarchyVertexBase_2 which refines the concept TriangulationVertexBase_2.

This class is templated by a parameter Vb which is to be instantiated by a model of the concept TriangulationVertexBase_2. The class Triangulation_hierarchy_vertex_base_2<Vb> inherits from the class Vb. This design allows to use either the default vertex base class or a user customized vertex base with additionnal functionalities.

#include <CGAL/Triangulation_hierarchy_2.h>

### Is Model for the Concept

TriangulationHierarchyVertexBase_2

### Inherits From

Vb

### See Also

TriangulationVertexBase_2
TriangulationHierarchyVertexBase_2
CGAL::Triangulation_vertex_base_2<Traits>