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CGAL 5.6.1 - 2D Convex Hulls and Extreme Points
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#include <CGAL/convex_hull_constructive_traits_2.h>
The class Convex_hull_constructive_traits_2 serves as a traits class for all the two-dimensional convex hull and extreme point calculation function.
Unlike the class CGAL::Convex_hull_traits_2<R>, this class makes use of previously computed results to avoid redundancy. For example, in the sidedness tests, lines (of type R::Line_2) are constructed, which is equivalent to the precomputation of subdeterminants of the orientation-determinant for three points.
Types | |
| typedef R::Point_2 | Point_2 |
| typedef R::Less_xy_2 | Less_xy_2 |
| typedef R::Less_yx_2 | Less_yx_2 |
| typedef unspecified_type | Compare_signed_distance_to_line_2 |
This internal functor builds and cache the line on the first call to its operator(). | |
| typedef R::Less_rotate_ccw | Less_rotate_ccw_2 |
| typedef R::Left_turn_2 | Left_turn_2 |
| typedef R::Equal_2 | Equal_2 |
Creation | |
| Convex_hull_constructive_traits_2 () | |
| default constructor. | |