#include <Concepts/SpatialSortingTraits_2.h>

Definition

All 2D spatial sorting algorithms provided in CGAL are parameterized by a traits class Traits, which defines the primitives (objects and predicates) that the sorting algorithms use. SpatialSortingTraits_2 defines the complete set of primitives required in these functions and functors.

Has Models:

Any CGAL kernel.

CGAL::Spatial_sort_traits_adapter_2<Base_traits,PointPropertyMap>

Types
typedef unspecified_type	Point_2
	The point type on which the sorting algorithms operate. More...

typedef unspecified_type	Compute_x_2
	Functor object type returning the $x$ coordinate of a `Point_2`. More...

typedef unspecified_type	Compute_y_2
	Functor object type returning the $y$ coordinate of a `Point_2`. More...

typedef unspecified_type	Less_x_2
	Binary predicate object type comparing `Point_2`s along the $x$ coordinate. More...

typedef unspecified_type	Less_y_2
	Binary predicate object type comparing `Point_2`s along the $y$ coordinate. More...

Creation
Only a copy constructor is required.
	SpatialSortingTraits_2 (const SpatialSortingTraits_2 &t)

Operations
The following member functions to create instances of the above predicate object types must exist.
Compute_x_2	compute_x_2_object ()

Compute_y_2	compute_y_2_object ()

Less_x_2	less_x_2_object ()

Less_y_2	less_y_2_object ()

Member Typedef Documentation

◆ Compute_x_2

typedef unspecified_type SpatialSortingTraits_2::Compute_x_2

Functor object type returning the $x$ coordinate of a Point_2.

Must provide FT operator()(Point_2 p) where FT can be used as argument of CGAL::to_double.

◆ Compute_y_2

typedef unspecified_type SpatialSortingTraits_2::Compute_y_2

Functor object type returning the $y$ coordinate of a Point_2.

Must provide FT operator()(Point_2 p) where FT can be used as argument of CGAL::to_double.

◆ Less_x_2

typedef unspecified_type SpatialSortingTraits_2::Less_x_2

Binary predicate object type comparing Point_2s along the $x$ coordinate.

Must provide bool operator()(Point_2 p, Point_2 q) where true is returned iff $p_x < q_x$ , where $p_x$ and $q_x$ denote $x$ coordinate of point $p$ and $q$ , respectively.

◆ Less_y_2

typedef unspecified_type SpatialSortingTraits_2::Less_y_2

Binary predicate object type comparing Point_2s along the $y$ coordinate.

Must provide bool operator()(Point_2 p, Point_2 q) where true is returned iff $p_y < q_y$ , where $p_y$ and $q_y$ denote $y$ coordinate of point $p$ and $q$ , respectively.

◆ Point_2

typedef unspecified_type SpatialSortingTraits_2::Point_2

The point type on which the sorting algorithms operate.

Constructor & Destructor Documentation

◆ SpatialSortingTraits_2()

SpatialSortingTraits_2::SpatialSortingTraits_2 ( const SpatialSortingTraits_2 & t )

Member Function Documentation

◆ compute_x_2_object()

Compute_x_2 SpatialSortingTraits_2::compute_x_2_object ( )

◆ compute_y_2_object()

Compute_y_2 SpatialSortingTraits_2::compute_y_2_object ( )

◆ less_x_2_object()

Less_x_2 SpatialSortingTraits_2::less_x_2_object ( )

◆ less_y_2_object()

Less_y_2 SpatialSortingTraits_2::less_y_2_object ( )