CGAL::Is_y_monotone_2< Traits > Class Template Reference

#include <CGAL/polygon_function_objects.h>

Definition

template<typename Traits>
class CGAL::Is_y_monotone_2< Traits >

Function object class that tests whether a sequence of points represents a \( y\)-monotone polygon or not.

Is model of

PolygonIsValid

See also

CGAL::convex_partition_is_valid_2()

CGAL::Partition_is_valid_traits_2<Traits, PolygonIsValid>

Implementation

This test requires \(O(n)\) time for a polygon with \( n\) vertices.

Creation
	Is_y_monotone_2 (const Traits &t)
	Traits is a model of the concept IsYMonotoneTraits_2

Operations
template<class InputIterator >
bool	operator() (InputIterator first, InputIterator beyond)
	returns true iff the points of type Traits::Point_2 in the range [first,beyond) define a \( y\)-monotone polygon.

Constructor & Destructor Documentation

Is_y_monotone_2()

template<typename Traits >

CGAL::Is_y_monotone_2< Traits >::Is_y_monotone_2

(

const Traits &

t

)

Traits is a model of the concept IsYMonotoneTraits_2

Member Function Documentation

operator()()

template<typename Traits >

template<class InputIterator >

bool CGAL::Is_y_monotone_2< Traits >::operator()	(	InputIterator	first,
		InputIterator	beyond
	)

returns true iff the points of type Traits::Point_2 in the range [first,beyond) define a \( y\)-monotone polygon.