
namespace CGAL {

/*!
\ingroup PkgBoundingVolumesRef

The class `Min_sphere_annulus_d_traits_2` is a traits class for the \f$ d\f$-dimensional 
optimisation algorithms using the two-dimensional \cgal kernel. 

\tparam K  must bea model for `Kernel`. 
\tparam ET NT are models for `RingNumberType`. Their default type is `K::RT`. 

\cgalModels `MinSphereAnnulusDTraits`

\sa `CGAL::Min_sphere_d<Traits>` 
\sa `CGAL::Min_annulus_d<Traits>` 
\sa `CGAL::Min_sphere_annulus_d_traits_3<K,ET,NT>` 
\sa `CGAL::Min_sphere_annulus_d_traits_d<K,ET,NT>` 
\sa `MinSphereAnnulusDTraits` 

*/
template< typename K, typename ET, typename NT >
class Min_sphere_annulus_d_traits_2 {
public:

/// \name Types 
/// @{

/*!
typedef to `K::Point_2`. 
*/ 
typedef unspecified_type Point_d; 

/*!
typedef to `K::Rep_tag`. 
*/ 
typedef unspecified_type Rep_tag; 

/*!
typedef to `K::RT`. 
*/ 
typedef unspecified_type RT; 

/*!
typedef to `K::FT`. 
*/ 
typedef unspecified_type FT; 

/*!
typedef to `K::Access_dimension_2`. 
*/ 
typedef unspecified_type Access_dimension_d; 

/*!
typedef to `K::Access_coordinates_begin_2`. 
*/ 
typedef unspecified_type Access_coordinates_begin_d; 

/*!
typedef to `K::Construct_point_2`. 
*/ 
typedef unspecified_type Construct_point_d; 

/*!
second template parameter (default is `K::RT`). 
*/ 
typedef unspecified_type ET; 

/*!
third template parameter (default is `K::RT`). 
*/ 
typedef unspecified_type NT; 

/// @} 

/// \name Creation 
/// @{

/*!
default constructor. 
*/ 
Min_sphere_annulus_d_traits_2( ); 

/*!
copy constructor. 
*/ 
Min_sphere_annulus_d_traits_2( 
const Min_sphere_annulus_d_traits_2<K,ET,NT>&); 

/// @} 

/// \name Operations 
/// The following functions just return the corresponding function
/// class object.
/// @{

/*!

*/ 
Access_dimension_d 
access_dimension_d_object() const; 

/*!

*/ 
Access_coordinates_begin_d 
access_coordinates_begin_d_object() const; 

/*!

*/ 
Construct_point_d 
construct_point_d_object() const; 

/// @}

}; /* end Min_sphere_annulus_d_traits_2 */
} /* end namespace CGAL */
