Types

Alpha_shape_vertex_base::Coord_type

A type to hold a coordinate type class. 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. Precondition: Let's us precise that Coord_type has to be the same as the one used by the Gt, already used by underlying triangulation Dt.

Creation

Alpha_shape_vertex_base v;
	default constructor.
Alpha_shape_vertex_base v ( Point p);
	constructor setting the point associated to.
Alpha_shape_vertex_base v ( Point p, void* f);
	constructor setting the point associated to and an incident face.

Access Functions

std::pair< Coord_type, Coord_type >
	v.get_range ()	returns two alpha values $$1 2, such as for $$ under $$2, the vertex is attached but singular, and for $$ under $$1, the vertex is regular.

Modifiers

void	v.set_range ( std::pair< Coord_type, Coord_type > I)
		sets the alpha values $$1 2, such as for $$ under $$2, the vertex is attached but singular, and for $$ under $$1, the vertex is regular.