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Function

CGAL::ch_ns_point

Definition

The function ch_ns_point finds the points of a given set of input points with minimal and maximal x coordinates.

#include <CGAL/ch_selected_extreme_points_2.h>

template <class ForwardIterator>
void
ch_ns_point ( ForwardIterator first,
ForwardIterator beyond,
ForwardIterator& n,
ForwardIterator& s,
Traits ch_traits = Default_traits)
traverses the range [first,beyond). After execution, the value of n is an iterator in the range such that *n ≥ yx *it for all iterators it in the range. Similarly, for s the inequality *s ≤ yx *it holds for all iterators in the range.

The default traits class Default_traits is the kernel in which the type ForwardIterator::value_type is defined.

Requirements

Traits defines the type Traits::Less_yx_2 as specified in the concept ConvexHullTraits_2 and the corresponding member function that returns an instance of this type.

See Also

CGAL::ch_e_point
CGAL::ch_nswe_point
CGAL::ch_n_point
CGAL::ch_s_point
CGAL::ch_w_point
CGAL::ch_we_point

Next: ch_n_point
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CGAL Open Source Project. Release 4.0.1. 2 July 2012.