Kernel::CompareY_2 Concept Reference

Definition

Refines

AdaptableBinaryFunction

See also

CGAL::compare_y()

Operations
A model of this concept must provide:
Comparison_result	operator() (const Kernel::Point_2 &p, const Kernel::Point_2 &q)
	Compares the Cartesian \( y\)-coordinates of points p and q
Comparison_result	operator() (const Kernel::Point_2 &p, const Kernel::Line_2 &l1, const Kernel::Line_2 &l2)
	compares the \( y\)-coordinates of p and the intersection of lines l1 and l2.
Comparison_result	operator() (const Kernel::Line_2 &l, const Kernel::Line_2 &h1, const Kernel::Line_2 &h2)
	compares the \( y\)-coordinates of the intersection of line l with line h1 and with line h2.
Comparison_result	operator() (const Kernel::Line_2 &l1, const Kernel::Line_2 &l2, const Kernel::Line_2 &h1, const Kernel::Line_2 &h2)
	compares the \( y\)-coordinates of the intersection of lines l1 and l2 and the intersection of lines h1 and h2.

Member Function Documentation

operator()() [1/3]

Comparison_result Kernel::CompareY_2::operator()	(	const Kernel::Line_2 &	l,
		const Kernel::Line_2 &	h1,
		const Kernel::Line_2 &	h2
	)

compares the \( y\)-coordinates of the intersection of line l with line h1 and with line h2.

See Figure fig-compare14 (b).

operator()() [2/3]

Comparison_result Kernel::CompareY_2::operator()	(	const Kernel::Line_2 &	l1,
		const Kernel::Line_2 &	l2,
		const Kernel::Line_2 &	h1,
		const Kernel::Line_2 &	h2
	)

compares the \( y\)-coordinates of the intersection of lines l1 and l2 and the intersection of lines h1 and h2.

See Figure fig-compare14 (c).

operator()() [3/3]

Comparison_result Kernel::CompareY_2::operator()	(	const Kernel::Point_2 &	p,
		const Kernel::Line_2 &	l1,
		const Kernel::Line_2 &	l2
	)

compares the \( y\)-coordinates of p and the intersection of lines l1 and l2.

See Figure fig-compare14 (a).