Enumerations and Related Functions

Typedefs
typedef Sign	CGAL::Orientation

Enumerations
enum	CGAL::Angle { CGAL::OBTUSE, CGAL::RIGHT, CGAL::ACUTE }
enum	CGAL::Bounded_side { CGAL::ON_UNBOUNDED_SIDE, CGAL::ON_BOUNDARY, CGAL::ON_BOUNDED_SIDE }
enum	CGAL::Comparison_result { CGAL::SMALLER, CGAL::EQUAL, CGAL::LARGER }
enum	CGAL::Sign { CGAL::NEGATIVE, CGAL::ZERO, CGAL::POSITIVE }
enum	CGAL::Oriented_side { CGAL::ON_NEGATIVE_SIDE, CGAL::ON_ORIENTED_BOUNDARY, CGAL::ON_POSITIVE_SIDE }

Functions
template<typename T , typename U >
T	CGAL::enum_cast (const U &u)
	converts between the various enums provided by the CGAL kernel. More...
Oriented_side	CGAL::opposite (const Oriented_side &o)
	returns the opposite side (for example CGAL::ON_POSITIVE_SIDE if o==CGAL::ON_NEGATIVE_SIDE), or CGAL::ON_ORIENTED_BOUNDARY if o==CGAL::ON_ORIENTED_BOUNDARY. More...
Bounded_side	CGAL::opposite (const Bounded_side &o)
	returns the opposite side (for example CGAL::ON_BOUNDED_SIDE if o==CGAL::ON_UNBOUNDED_SIDE), or returns CGAL::ON_BOUNDARY if o==CGAL::ON_BOUNDARY. More...

Variables
const CGAL::Orientation	CGAL::CLOCKWISE = NEGATIVE
const CGAL::Orientation	CGAL::COUNTERCLOCKWISE = POSITIVE
const CGAL::Orientation	CGAL::COLLINEAR = ZERO
const CGAL::Orientation	CGAL::LEFT_TURN = POSITIVE
const CGAL::Orientation	CGAL::RIGHT_TURN = NEGATIVE
const CGAL::Orientation	CGAL::COPLANAR = ZERO
const CGAL::Orientation	CGAL::DEGENERATE = ZERO
const CGAL::Null_vector	CGAL::NULL_VECTOR
	A symbolic constant used to construct zero length vectors. More...
const CGAL::Origin	CGAL::ORIGIN
	A symbolic constant which denotes the point at the origin. More...

Typedef Documentation

typedef Sign CGAL::Orientation

See Also

CGAL::LEFT_TURN

CGAL::RIGHT_TURN

CGAL::COLLINEAR

CGAL::CLOCKWISE

CGAL::COUNTERCLOCKWISE

CGAL::COPLANAR

Examples:

Filtered_kernel/Filtered_predicate.cpp.

Enumeration Type Documentation

enum CGAL::Angle

See Also

CGAL::angle()

Enumerator
OBTUSE
RIGHT
ACUTE

enum CGAL::Bounded_side

See Also

CGAL::opposite(const Bounded_side& o)

Enumerator
ON_UNBOUNDED_SIDE
ON_BOUNDARY
ON_BOUNDED_SIDE

enum CGAL::Comparison_result

Enumerator
SMALLER
EQUAL
LARGER

enum CGAL::Oriented_side

Enumerator
ON_NEGATIVE_SIDE
ON_ORIENTED_BOUNDARY
ON_POSITIVE_SIDE

enum CGAL::Sign

See Also

CGAL::Orientation

Enumerator
NEGATIVE
ZERO
POSITIVE

Function Documentation

template<typename T , typename U >

T CGAL::enum_cast

(

const U &

u

)

converts between the various enums provided by the CGAL kernel.

The conversion preserves the order of the values.

See Also

CGAL::Sign

CGAL::Comparison_result

CGAL::Orientation

CGAL::Oriented_side

CGAL::Bounded_side

CGAL::Angle

CGAL::Uncertain<T>

Oriented_side CGAL::opposite

(

const Oriented_side &

o

)

returns the opposite side (for example CGAL::ON_POSITIVE_SIDE if o==CGAL::ON_NEGATIVE_SIDE), or CGAL::ON_ORIENTED_BOUNDARY if o==CGAL::ON_ORIENTED_BOUNDARY.

Bounded_side CGAL::opposite

(

const Bounded_side &

o

)

returns the opposite side (for example CGAL::ON_BOUNDED_SIDE if o==CGAL::ON_UNBOUNDED_SIDE), or returns CGAL::ON_BOUNDARY if o==CGAL::ON_BOUNDARY.

Variable Documentation

const CGAL::Orientation CGAL::CLOCKWISE = NEGATIVE

See Also

CGAL::COUNTERCLOCKWISE

const CGAL::Orientation CGAL::COLLINEAR = ZERO

See Also

CGAL::LEFT_TURN

CGAL::RIGHT_TURN

const CGAL::Orientation CGAL::COPLANAR = ZERO

const CGAL::Orientation CGAL::COUNTERCLOCKWISE = POSITIVE

See Also

CGAL::CLOCKWISE

const CGAL::Orientation CGAL::DEGENERATE = ZERO

const CGAL::Orientation CGAL::LEFT_TURN = POSITIVE

See Also

CGAL::COLLINEAR

CGAL::RIGHT_TURN

const CGAL::Null_vector CGAL::NULL_VECTOR

A symbolic constant used to construct zero length vectors.

See Also

CGAL::Vector_2<Kernel>

CGAL::Vector_3<Kernel>

const Origin CGAL::ORIGIN

A symbolic constant which denotes the point at the origin.

This constant is used in the conversion between points and vectors.

Example

Point_2< Cartesian<Exact_NT> >  p(1.0, 1.0), q;
Vector2< Cartesian<Exact_NT> >  v;
v = p - ORIGIN;
q = ORIGIN + v;  
assert( p == q );

See Also

CGAL::Point_2<Kernel>

CGAL::Point_3<Kernel>

const CGAL::Orientation CGAL::RIGHT_TURN = NEGATIVE

See Also

CGAL::COLLINEAR

CGAL::LEFT_TURN