Kernel::Angle_2 Concept Reference

Definition

See also

CGAL::angle()

Operations
A model of this concept must provide:
Angle	operator() (const Kernel::Vector_2 &u, const Kernel::Vector_2 &v)
	returns CGAL::OBTUSE, CGAL::RIGHT or CGAL::ACUTE depending on the angle formed by the two vectors u and v.
Angle	operator() (const Kernel::Point_2 &p, const Kernel::Point_2 &q, const Kernel::Point_2 &r)
	returns CGAL::OBTUSE, CGAL::RIGHT or CGAL::ACUTE depending on the angle formed by the three points p, q, r (q being the vertex of the angle).
Angle	operator() (const Kernel::Point_2 &p, const Kernel::Point_2 &q, const Kernel::Point_2 &r, const Kernel::Point_2 &s)
	returns CGAL::OBTUSE, CGAL::RIGHT or CGAL::ACUTE depending on the angle formed by the two vectors pq, rs.

Member Function Documentation

operator()() [1/2]

Angle Kernel::Angle_2::operator()	(	const Kernel::Point_2 &	p,
		const Kernel::Point_2 &	q,
		const Kernel::Point_2 &	r )

returns CGAL::OBTUSE, CGAL::RIGHT or CGAL::ACUTE depending on the angle formed by the three points p, q, r (q being the vertex of the angle).

The returned value is the same as operator()(p - q, r - q).

operator()() [2/2]

Angle Kernel::Angle_2::operator()	(	const Kernel::Point_2 &	p,
		const Kernel::Point_2 &	q,
		const Kernel::Point_2 &	r,
		const Kernel::Point_2 &	s )

returns CGAL::OBTUSE, CGAL::RIGHT or CGAL::ACUTE depending on the angle formed by the two vectors pq, rs.

The returned value is the same as operator()(q - p, s - r).