The function orientation_2 computes if a polygon is clockwise or counterclockwise oriented.
#include <CGAL/Polygon_2_algorithms.h>
template <class ForwardIterator, class Traits> | ||
Orientation | orientation_2 ( ForwardIterator first, ForwardIterator last, Traits traits) |
Precondition
is_simple_2(first, last, traits);
PolygonTraits_2
CGAL::is_simple_2
CGAL::Polygon_2<PolygonTraits_2, Container>
CGAL::Orientation