AlphaShapeFace_2

Definition

Refines

Types

AlphaShapeFace_2::Interval_3
	A container type to get (and put) the three special values ($$1, 2, 3) associated with an alpha shape edge.
AlphaShapeFace_2::FT
	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

Creation

advanced

AlphaShapeFace_2 f;
	default constructor.
AlphaShapeFace_2 f ( Vertex_handle v0, Vertex_handle v1, Vertex_handle v2);
	constructor setting the incident vertices.
AlphaShapeFace_2 f ( Vertex_handle v0, Vertex_handle v1, Vertex_handle v2, Face_handle n0, Face_handle n1, Face_handle n2);
	constructor setting the incident vertices and the neighboring faces.

advanced

Access Functions

Interval_3	f.get_ranges ( int i)	returns the interval associated with the edge indexed with $$i, which contains three alpha values $$1 2 3, such as for $$ between $$1 and $$2, the edge indexed with $$i is attached but singular, for $$ between $$2 and $$3, the edge is regular, and for $$ greater than $$3, the edge is interior.
FT	f.get_alpha ()	return the alpha value, under which the alpha shape contains the face.

Modifiers

advanced

void	f.set_ranges ( int i, Interval_3 V)
		sets the interval associated with the edge indexed with $$i, which contains three alpha values $$1 2 3, such as for $$ between $$1 and $$2, the edge indexed with $$i is attached but singular, for $$ between $$2 and $$3, the edge is regular, and for $$ greater than $$3, the edge is interior.
void	f.set_alpha ( FT A)	sets the alpha value, under which the alpha shape contains the face.

advanced