CGAL::Filtered_kernel_adaptor< CK > Struct Template Reference

#include <CGAL/Filtered_kernel.h>

Definition

template<typename CK>
struct CGAL::Filtered_kernel_adaptor< CK >

Filtered_kernel_adaptor is a kernel that uses a filtering technique to obtain a kernel with exact and efficient predicate functors.

The geometric constructions are exactly those of the kernel CK, which means that they are not necessarily exact. More details about the filtering technique can be found in [1].

In contrast to Filtered_kernel, the global functions are those of CK.

Is model of

Kernel

Example

The following example shows how to produce a kernel whose geometric objects and constructions are those of Simple_cartesian<double> The predicate functors of the kernel are exact, the global functions are not.

#include <CGAL/Simple_cartesian.h>
#include <CGAL/Filtered_kernel.h>
 
typedef CGAL::Simple_cartesian<double> CK;
typedef CGAL::Filtered_kernel_adaptor<CK> K;
 
typedef K::Point_2 p(0,0), q(1,1), r(1,5);
 
CGAL::orientation(p,q,r); // not exact
 
typedef K::Orientation_2 orientation;
orientation(p,q,r); // exact

Examples

Kernel_23/MyKernel.cpp.