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CGAL 4.4 - 2D and 3D Linear Geometry Kernel
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Kernel::Orientation_2 Concept Reference
Kernel Function Object Concepts

Definition

Refines:
AdaptableFunctor (with three arguments)
See Also
CGAL::orientation()

Operations

A model of this concept must provide:

Orientation operator() (const Kernel::Point_2 &p, const Kernel::Point_2 &q, const Kernel::Point_2 &r)
 returns CGAL::LEFT_TURN, if r lies to the left of the oriented line l defined by p and q, returns CGAL::RIGHT_TURN if r lies to the right of l, and returns CGAL::COLLINEAR if r lies on l. More...
 
Orientation operator() (const Kernel::Vector_2 &u, const Kernel::Vector_2 &v)
 returns CGAL::LEFT_TURN if u and v form a left turn, returns CGAL::RIGHT_TURN if u and v form a right turn, and returns CGAL::COLLINEAR if u and v are collinear. More...
 

Member Function Documentation

Orientation Kernel::Orientation_2::operator() ( const Kernel::Point_2 &  p,
const Kernel::Point_2 &  q,
const Kernel::Point_2 &  r 
)

returns CGAL::LEFT_TURN, if r lies to the left of the oriented line l defined by p and q, returns CGAL::RIGHT_TURN if r lies to the right of l, and returns CGAL::COLLINEAR if r lies on l.

Orientation Kernel::Orientation_2::operator() ( const Kernel::Vector_2 &  u,
const Kernel::Vector_2 &  v 
)

returns CGAL::LEFT_TURN if u and v form a left turn, returns CGAL::RIGHT_TURN if u and v form a right turn, and returns CGAL::COLLINEAR if u and v are collinear.