CGAL::Is_y_monotone_2< Traits > Class Template Reference

#include <CGAL/polygon_function_objects.h>

Definition

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.