CGAL 4.9 - 2D Alpha Shapes
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AlphaShapeVertex_2 Concept Reference
Concepts

Definition

Refines:
TriangulationVertexBase_2
Has Models:
CGAL::Alpha_shape_vertex_base_2

Types

typedef unspecified_type FT
 A coordinate type. More...
 

Creation

 AlphaShapeVertex_2 ()
 default constructor.
 
 AlphaShapeVertex_2 (Point p)
 constructor setting the point.
 
 AlphaShapeVertex_2 (Point p, const Face_handle &ff)
 constructor setting the point associated to and an incident face.
 

Access Functions

std::pair< FT, FT > get_range ()
 returns two alpha values α1≤α2, such as for α between α1 and α2, the vertex is attached but singular, and for α upper α2, the vertex is regular.
 

Modifiers

void set_range (std::pair< FT, FT > I)
 sets the alpha values α1≤α2, such as for α between α1 and α2, the vertex is attached but singular, and for α upper α2, the vertex is regular.
 

Member Typedef Documentation

typedef unspecified_type AlphaShapeVertex_2::FT

A coordinate type.

The type must provide a copy constructor, assignment, comparison operators, negation, multiplication, division and allow the declaration and initialization with a small integer constant (cf. requirements for number types). An obvious choice would be coordinate type of the point class.