// ============================================================================
//
// Copyright (c) 1997 The CGAL Consortium
//
// This software and related documentation is part of an INTERNAL release
// of the Computational Geometry Algorithms Library (CGAL). It is not
// intended for general use.
//
// ----------------------------------------------------------------------------
//
// release       : $CGAL_Revision: CGAL-0.9-I-06 $
// release_date  : $CGAL_Date: 1998/03/11 $
//
// file          : include/CGAL/IO/polygon_Window_stream.h
// source        :
// revision      : 1.8a
// revision_date : 13 Mar 1998
// author(s)     : Wieger Wesselink <wieger@cs.ruu.nl>
//
// coordinator   : Utrecht University
// ============================================================================

// Window_stream I/O operators
// ===========================

// Polygon_2
// ---------
#ifdef CGAL_POLYGON_2_H
#ifndef CGAL_WINDOW_STREAM_POLYGON_2_H
#define CGAL_WINDOW_STREAM_POLYGON_2_H

CGAL_BEGIN_NAMESPACE

template <class Traits, class Container>
Window_stream&
operator<<(Window_stream& ws,
           const Polygon_2<Traits,Container> &polygon)
{
  typedef Polygon_2<Traits,Container>::Edge_const_circulator EI;
  EI e = polygon.edges_circulator();
  if (e != NULL) {
    EI end = e;
    do {
      ws << *e;
      ws << (*e).source();
      ++e;
      } while (e != end);
    }
  return ws;
}

CGAL_END_NAMESPACE

#endif // CGAL_WINDOW_STREAM_POLYGON_2_H
#endif // CGAL_POLYGON_2_H