CGAL::Arr_linear_traits_2< Kernel >::Curve_2 Class Reference

#include <CGAL/Arr_linear_traits_2.h>

Definition

The Curve_2 (and the X_monotone_curve_2) class nested within the linear-traits can represent all types of linear objects.

The class supports the copy and default constructor and the assignment operator. In addition, the operator<< and operator>> for linear objects are defined for standard output and input streams.

Types
typedef Kernel::Point_2	Point_2
typedef Kernel::Segment_2	Segment_2
typedef Kernel::Ray_2	Ray_2
typedef Kernel::Line_2	Line_2

Creation
	Curve_2 (const Point_2 &p)
	constructs an degenerate curve equivalent to the point p.
	Curve_2 (const Segment_2 &seg)
	constructs an line segment.
	Curve_2 (const Ray_2 &ray)
	constructs a ray.
	Curve_2 (const Line_2 &ln)
	constructs a line.

Access Functions
bool	is_point () const
	returns whether c is a point (a degenerate curve).
Point_2	point () const
	returns a point object equivalent to c. More...
bool	is_segment () const
	returns whether c is a segment (has two bounded endpoints).
Segment_2	segment () const
	returns a segment object equivalent to c. More...
bool	is_ray () const
	returns whether c is a ray (has a bounded source point and its other end is unbounded).
Ray_2	ray () const
	returns a ray object equivalent to c. More...
bool	is_line () const
	returns whether c is a line (has only unbounded ends).
Line_2	line () const
	returns a line object equivalent to c. More...
Line_2	supporting_line () const
	returns the supporting line of c. More...
Point_2	source () const
	returns c's source point. More...
Point_2	target () const
	returns c's target point. More...

Member Function Documentation

template<typename Kernel >

Line_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::line

(

)

const

returns a line object equivalent to c.

Precondition

c is a line.

template<typename Kernel >

Point_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::point

(

)

const

returns a point object equivalent to c.

Precondition

c is a point.

template<typename Kernel >

Ray_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::ray

(

)

const

returns a ray object equivalent to c.

Precondition

c is a ray.

template<typename Kernel >

Segment_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::segment

(

)

const

returns a segment object equivalent to c.

Precondition

c is a segment.

template<typename Kernel >

Point_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::source

(

)

const

returns c's source point.

Precondition

c is a point, a segment or a ray.

template<typename Kernel >

Line_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::supporting_line

(

)

const

returns the supporting line of c.

Precondition

c is not a point (a degenerate curve).

template<typename Kernel >

Point_2 CGAL::Arr_linear_traits_2< Kernel >::Curve_2::target

(

)

const

returns c's target point.

Precondition

c is a point or a segment.