qt_widget_polygon_2.h

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// Copyright (c) 2002-2004  INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; version 2.1 of the License.
// See the file LICENSE.LGPL 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.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.3-branch/Qt_widget/include/CGAL/IO/Qt_widget_Polygon_2.h $
// $Id: Qt_widget_Polygon_2.h 32795 2006-07-30 16:38:54Z spion $
// 
//
// Author(s)     : Radu Ursu

#ifndef CGAL_QT_WIDGET_POLYGON_2_H
#define CGAL_QT_WIDGET_POLYGON_2_H

#include <CGAL/IO/Qt_widget.h>
#include <CGAL/Polygon_2.h>

namespace CGAL{

template <class Tr,class Co>
Qt_widget& operator<<(Qt_widget& w, const Polygon_2<Tr,Co>& pol)
{
  typedef typename Polygon_2<Tr,Co>::Vertex_const_iterator VI;
  QPointArray array;

  array.resize(pol.size());

  unsigned int n=0;
  for(VI i=pol.vertices_begin();i!=pol.vertices_end();i++)
    {
      array.setPoint(n++,w.x_pixel(to_double(i->x())),
		     w.y_pixel(to_double(i->y())));
    }
  w.get_painter().drawPolygon(array);
  w.do_paint();
  return w;
}

}//end namespace CGAL

#endif