Definition

The concept AlphaShapeCell_3 describes the requirements for the base cell of an alpha shape.

Refines: DelaunayTriangulationCellBase_3 if the underlying triangulation of the alpha shape is a Delaunay triangulation
: RegularTriangulationCellBase_3 if the underlying triangulation of the alpha shape is a regular triangulation
: Periodic_3TriangulationDSCellBase_3 if the underlying triangulation of the alpha shape is a periodic triangulation

Has models
: CGAL::Alpha_shape_cell_base_3 (templated with the appropriate triangulation cell base class)

Types
typedef unspecified_type	NT
	A number type.

typedef unspecified_type	Alpha_status_iterator
	An iterator with value type `CGAL::Alpha_status<NT>`.

Creation
	AlphaShapeCell_3 ()
	default constructor.

	AlphaShapeCell_3 (const Vertex_handle &v0, const Vertex_handle &v1, const Vertex_handle &v2, const Vertex_handle &v3)
	constructor setting the incident vertices.

	AlphaShapeCell_3 (const Vertex_handle &v0, const Vertex_handle &v1, const Vertex_handle &v2, const Vertex_handle &v3, const Cell_handle &n0, const Cell_handle &n1, const Cell_handle &n2, const Cell_handle &n3)
	constructor setting the incident vertices and the neighboring cells.

Access Functions
NT	get_alpha ()
	Returns the alpha value of the cell.

Alpha_status_iterator	get_facet_status (int i)
	Returns an iterator on the `CGAL::Alpha_status<NT>` of the facet `i` of the cell.

Modifiers
void	set_alpha (const NT &alpha)
	Sets the critical value of the cell.

void	set_facet_status (int i, Alpha_status_iterator as)
	Sets the iterator pointing to the `CGAL::Alpha_status<NT>` of the facet `i` of the cell.

Member Typedef Documentation

A number type.

Must be the same as the number type used in the traits class of the triangulation underlying the alpha shape.