// Copyright (c) 1997-2001  Freie Universitaet Berlin (Germany).
// 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.
//
// $Source: /CVSROOT/CGAL/Packages/Min_ellipse_2/include/CGAL/Min_ellipse_2.C,v $
// $Revision: 1.6 $ $Date: 2004/09/05 12:30:25 $
// $Name:  $
//
// Author(s)     : Sven Schoenherr <sven@inf.ethz.ch>, Bernd Gaertner

#include <iterator>

CGAL_BEGIN_NAMESPACE

// Class implementation (continued)
// ================================
// I/O
// ---
template < class Traits_ >
std::ostream&
operator << ( std::ostream& os,
              const Min_ellipse_2<Traits_>& min_ellipse)
{
    CGAL_USING_NAMESPACE_STD

    typedef typename Min_ellipse_2<Traits_>::Point  Point;
    typedef  ostream_iterator<Point>        Os_it;

    switch ( CGAL::get_mode( os)) {

      case CGAL::IO::PRETTY:
        os << endl;
        os << "CGAL::Min_ellipse_2( |P| = "<<min_ellipse.number_of_points()
           << ", |S| = " << min_ellipse.number_of_support_points() << endl;
        os << "  P = {" << endl;
        os << "    ";
        copy( min_ellipse.points_begin(), min_ellipse.points_end(),
              Os_it( os, ",\n    "));
        os << "}" << endl;
        os << "  S = {" << endl;
        os << "    ";
        copy( min_ellipse.support_points_begin(),
              min_ellipse.support_points_end(),
              Os_it( os, ",\n    "));
        os << "}" << endl;
        os << "  ellipse = " << min_ellipse.ellipse() << endl;
        os << ")" << endl;
        break;

      case CGAL::IO::ASCII:
        copy( min_ellipse.points_begin(), min_ellipse.points_end(),
              Os_it( os, "\n"));
        break;

      case CGAL::IO::BINARY:
        copy( min_ellipse.points_begin(), min_ellipse.points_end(),
              Os_it( os));
        break;

      default:
        CGAL_optimisation_assertion_msg( false,
                                         "CGAL::get_mode( os) invalid!");
        break; }

    return( os);
}

template < class Traits_ >
std::istream&
operator >> ( std::istream& is, CGAL::Min_ellipse_2<Traits_>& min_ellipse)
{
    CGAL_USING_NAMESPACE_STD

    switch ( CGAL::get_mode( is)) {

      case CGAL::IO::PRETTY:
        cerr << endl;
        cerr << "Stream must be in ascii or binary mode" << endl;
        break;

      case CGAL::IO::ASCII:
      case CGAL::IO::BINARY:
        typedef typename Min_ellipse_2<Traits_>::Point  Point;
        typedef  istream_iterator<Point>       Is_it;
        min_ellipse.clear();
        min_ellipse.insert( Is_it( is), Is_it());
        break;

      default:
        CGAL_optimisation_assertion_msg( false, "CGAL::IO::mode invalid!");
        break; }

    return( is);
}

CGAL_END_NAMESPACE

// ===== EOF ==================================================================
