min_circle_2_window_stream.h

很多二维 三维几何计算算法 C++ 类库

// 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.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.3-branch/Min_circle_2/include/CGAL/IO/Min_circle_2_Window_stream.h $
// $Id: Min_circle_2_Window_stream.h 28567 2006-02-16 14:30:13Z lsaboret $
// 
//
// Author(s)     : Sven Schoenherr <[e-mail]>, Bernd Gaertner

// Each of the following operators is individually
// protected against multiple inclusion.

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

// Optimisation_circle_2
// ---------------------
#ifdef CGAL_OPTIMISATION_CIRCLE_2_H
#ifndef CGAL_IO_WINDOW_STREAM_OPTIMISATION_CIRCLE_2
#define CGAL_IO_WINDOW_STREAM_OPTIMISATION_CIRCLE_2

template< class K_ >
CGAL::Window_stream&
operator << ( CGAL::Window_stream &ws,
              const CGAL::Optimisation_circle_2<K_>& oc)
{
    double  cx( CGAL::to_double( oc.center().x()));
    double  cy( CGAL::to_double( oc.center().y()));
    double  sr( CGAL::to_double( oc.squared_radius()));

    if ( ! CGAL_NTS is_negative( sr))
        ws.draw_circle( cx, cy, CGAL::sqrt( sr));
    return( ws);
}

#endif // CGAL_IO_WINDOW_STREAM_OPTIMISATION_CIRCLE_2
#endif // CGAL_OPTIMISATION_CIRCLE_2_H

// Min_circle_2
// ------------
#ifdef CGAL_MIN_CIRCLE_2_H
#ifndef CGAL_IO_WINDOW_STREAM_MIN_CIRCLE_2
#define CGAL_IO_WINDOW_STREAM_MIN_CIRCLE_2

template< class Traits_ >
CGAL::Window_stream&
operator << ( CGAL::Window_stream &ws,
              const CGAL::Min_circle_2<Traits_>& min_circle)
{
    typedef typename CGAL::Min_circle_2<Traits_>::Point_iterator
	                                          Point_iterator;

    Point_iterator  first( min_circle.points_begin());
    Point_iterator  last ( min_circle.points_end());
    for ( ; first != last; ++first)
        ws << *first;
    return( ws << min_circle.circle());
}

#endif // CGAL_IO_WINDOW_STREAM_MIN_CIRCLE_2
#endif // CGAL_MIN_CIRCLE_2_H

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