// Copyright (c) 2005-2006  INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you may redistribute it under
// the terms of the Q Public License version 1.0.
// See the file LICENSE.QPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Partially supported by the IST Programme of the EU as a Shared-cost
// RTD (FET Open) Project under Contract No  IST-2000-26473 
// (ECG - Effective Computational Geometry for Curves and Surfaces) 
// and a STREP (FET Open) Project under Contract No  IST-006413 
// (ACS -- Algorithms for Complex Shapes)
//
// $URL: svn+ssh://sloriot@scm.gforge.inria.fr/svn/cgal/trunk/Circular_kernel_3/include/CGAL/Circular_kernel_3/Circular_arc_3.h $
// $Id: Circular_arc_3.h 40627 2007-10-16 15:00:59Z sloriot $
//
// Author(s) : Loriot Sebastien <Sebastien.Loriot@sophia.inria.fr>
//                   Monique Teillaud <Monique.Teillaud@sophia.inria.fr>
//                   Sylvain Pion     <Sylvain.Pion@sophia.inria.fr>
//                   Pedro Machado    <tashimir@gmail.com>
//                   Julien Hazebrouck
//                   Damien Leroy

#ifndef CGAL_SPHERE_WITH_RADIUS_3_H
#define CGAL_SPHERE_WITH_RADIUS_3_H

namespace CGAL {
  template <class SK> 
    class Sphere_with_radius_3
    : public SK::Kernel_base::Sphere_with_radius_3
  {
    typedef typename SK::FT                    FT;
    typedef typename SK::Point_3               Point_3;
    typedef typename SK::Plane_3               Plane_3;
    typedef typename SK::Kernel_base::Sphere_with_radius_3 RSphere_with_radius_3; 
   
  
  public:
    typedef  RSphere_with_radius_3 Repd;
    typedef  SK   R; 
    
    const Repd& rep() const{
      return *this;
    }
    
    Repd& rep(){
      return *this;
    }
    
    Sphere_with_radius_3(const RSphere_with_radius_3& c)
    :RSphere_with_radius_3(c){}
    
    Sphere_with_radius_3()
      : RSphere_with_radius_3(typename R::Construct_sphere_with_radius_3()())
      {}

    Sphere_with_radius_3(const FT& _r,const Point_3& _c)
      : RSphere_with_radius_3(typename R::Construct_sphere_with_radius_3()(_r,_c))
      {}
        
    Sphere_with_radius_3(const CGAL::Sphere_3<SK>& S)
      : RSphere_with_radius_3(typename R::Construct_sphere_with_radius_3()(S))
      {}        

    typename Qualified_result_of
    <typename R::Compute_radius_sphere_with_radius_3, Sphere_with_radius_3>::type
    //const Sphere_3 &
    radius() const
    {
      return typename R::Compute_radius_sphere_with_radius_3()(*this);
    }
  };
}
#endif //CGAL_SPHERE_WITH_RADIUS_3_H