 CGAL 4.7 - 2D and Surface Function Interpolation
CGAL::Voronoi_intersection_2_traits_3< K > Class Template Reference

#include <CGAL/Voronoi_intersection_2_traits_3.h>

## Definition

Voronoi_intersection_2_traits_3 is a model for the concept RegularTriangulationTraits_2 and InterpolationTraits.

It can be used to instantiate the geometric traits class of a two-dimensional regular triangulation. A three-dimensional plane is defined by a point and a vector that are members of the traits class. The triangulation is defined on 3D points. It is the regular triangulation of the input points projected onto the plane and each weighted with the negative squared distance of the input point to the plane. It can be shown that it is dual to the power diagram obtained by intersecting the three-dimensional Voronoi diagram of the input points with the plane. All predicates and constructions used in the computation of the regular triangulation are formulated on the three dimensional points without explicitly constructing the projected points and the weights. This reduces the arithmetic demands. The traits class is templated by a kernel class K.

Is Model Of:
RegularTriangulationTraits_2
RegularTriangulationTraits_2
CGAL::Regular_triangulation_2<Gt, Tds>
CGAL::regular_neighbor_coordinates_2()
3D Surface Neighbor Coordinates Functions

## Types

typedef K::RT Weight

typedef K::FT FT

typedef K::Point_3 Point_2

typedef K::Segment_3 Segment_2

typedef K::Triangle_3 Triangle_2

typedef K::Line_3 Line_2

typedef K::Ray_3 Ray_2

typedef K::Vector_3 Vector_2

typedef K::Construct_triangle_3 Construct_triangle_2

typedef K::Construct_ray_3 Construct_ray_2

typedef K::Compare_distance_3 Compare_distance_2

typedef
Orientation_with_normal_plane_2_3
< Rep >
Orientation_2

typedef
Side_of_plane_centered_sphere_2_3
< Point_2
Power_test_2

typedef
Construct_plane_centered_circumcenter_3
< Point_2
Construct_weighted_circumcenter_2

typedef
Compare_first_projection_3
< Point_2
Compare_x_2

typedef
Compare_second_projection_3
< Point_2
Compare_y_2

Compute_area_3< Rep > Compute_area_2
An instance of this function object class computes the square root of the result of K::Compute_squared_area_3. More...

## Creation

Voronoi_intersection_2_traits_3 (const typename K::Point_3 &point=typename K::Point_3(), const typename K::Vector_3 &normal=NULL_VECTOR)
The plane associated to the traits class contains point and has as normal vector normal.

## Member Data Documentation

template<typename K >
 Compute_area_3 CGAL::Voronoi_intersection_2_traits_3< K >::Compute_area_2

An instance of this function object class computes the square root of the result of K::Compute_squared_area_3.

If the number type FT does not support the square root operation, the result is cast to double before computing the square root.