nef_polyhedron_2_window_stream.h

很多二维 三维几何计算算法 C++ 类库

// Copyright (c) 1997-2000  Max-Planck-Institute Saarbruecken (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/Nef_2/include/CGAL/IO/Nef_polyhedron_2_Window_stream.h $
// $Id: Nef_polyhedron_2_Window_stream.h 28567 2006-02-16 14:30:13Z lsaboret $
// 
//
// Author(s)     : Michael Seel <[e-mail]>

#ifndef NEF_POLYHEDRON_2_WINDOW_STREAM_H
#define NEF_POLYHEDRON_2_WINDOW_STREAM_H

#include <CGAL/Nef_polyhedron_2.h>
#include <CGAL/Nef_2/PM_visualizor.h>

CGAL_BEGIN_NAMESPACE

static long frame_default = 100;
static bool show_triangulation = false;

template <typename T>
CGAL::Window_stream& operator<<(CGAL::Window_stream& ws, 
const Nef_polyhedron_2<T>& P)
{
  typedef Nef_polyhedron_2<T> Polyhedron;
  typedef typename T::RT RT;
  typedef typename T::Standard_RT Standard_RT;
  typedef typename Polyhedron::Topological_explorer TExplorer;
  typedef typename Polyhedron::Point            Point;
  typedef typename Polyhedron::Line             Line;
  typedef CGAL::PM_BooleColor<TExplorer> BooleColor;
  typedef CGAL::PM_visualizor<TExplorer,T,BooleColor> Visualizor;

  TExplorer D = P.explorer();
  const T& E = Nef_polyhedron_2<T>::EK;

  Standard_RT frame_radius = frame_default;
  E.determine_frame_radius(D.points_begin(),D.points_end(),frame_radius);
  RT::set_R(frame_radius);
  Visualizor PMV(ws,D); PMV.draw_map();
  if (show_triangulation) {
    P.init_locator();
    Visualizor V(ws,P.locator().triangulation());
    V.draw_skeleton(CGAL::BLUE);
  }  

  return ws;
}


CGAL_END_NAMESPACE

#endif // NEF_POLYHEDRON_2_WINDOW_STREAM_H