leda_window.h

来自「CGAL is a collaborative effort of severa」· C头文件 代码 · 共 820 行 · 第 1/2 页

// Copyright (c) 1999  Utrecht University (The Netherlands),
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
// and Tel-Aviv University (Israel).  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.
//
// $Source: /CVSROOT/CGAL/Packages/window/include/CGAL/IO/leda_window.h,v $
// $Revision: 1.15 $ $Date: 2004/02/20 13:05:14 $
// $Name:  $
//
// Author(s)     : Andreas Fabri
//                 Stefan Schirra
 

#ifndef CGAL_LEDA_WINDOW_H
#define CGAL_LEDA_WINDOW_H

#include <CGAL/basic.h>
#include <CGAL/IO/Color.h>
#include <LEDA/window.h>
#include <CGAL/IO/cgal_logo.h>

CGAL_BEGIN_NAMESPACE


// #if ( __LEDA__ < 360 )
// #define leda_window window
// #define leda_color  color
// #endif

#if ( __LEDA__ < 361 )
#define leda_black black
#define leda_dotted dotted
#define leda_xor_mode xor_mode
#define leda_blue blue
#define leda_red red
#endif

#if (( __LEDA__ < 362 ) || defined(NOTEBOOK))
#define  leda_drawing_mode  drawing_mode
#endif


#define Str(x)     #x
#define Xstr(x)    Str(x)
#define OP         CGAL CGAL_VERSION


typedef leda_window        Window_stream;

inline
leda_window&
operator<<(leda_window& w, const Color& c)
{
  w.set_fg_color(leda_color(c.red(), c.green(), c.blue()));
  return w;
}


inline
void
cgalize(leda_window& w)
{
  w.set_frame_label(Xstr(OP));
  w.set_icon_label("CGAL");
  w.set_line_width( 2);
  w.set_icon_pixrect( w.create_pixrect(cgal_logo));
}

inline
leda_window*
create_demo_window( float w = 512.0, float h = 512.0,
                         const char* str = "CGAL",
                         double x_extension = 1.0)
{
#if __LEDA__ >= 420
  leda_window* Wptr = new leda_window((int) w, (int) h);
#else
  leda_window* Wptr = new leda_window( w, h);
#endif
  cgalize( *Wptr);
  double y_extension = x_extension * h / w;
  Wptr->init(-x_extension, x_extension, -y_extension);
  Wptr->set_frame_label( str);
  return Wptr;
}


inline
leda_window*
create_and_display_demo_window(float w = 512.0, float h = 512.0,
                                    const char* str = "CGAL",
                                    double x_extension = 1.0)
{
#if __LEDA__ >= 420
  leda_window* Wptr = new leda_window( (int) w, (int) h);
#else
  leda_window* Wptr = new leda_window( w, h);
#endif
  cgalize( *Wptr);
  double y_extension = x_extension * h / w;
  Wptr->init(-x_extension, x_extension, -y_extension);
  Wptr->set_frame_label( str);
  Wptr->display();
  return Wptr;
}

CGAL_END_NAMESPACE


#endif // CGAL_LEDA_WINDOW_H

CGAL_BEGIN_NAMESPACE

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

#ifdef CGAL_POINT_2_H
#ifndef CGAL_LEDA_WINDOW_POINT_2
#define CGAL_LEDA_WINDOW_POINT_2
template< class R >
leda_window&
operator<<(leda_window& w, const Point_2<R>& p)
{
  double x = CGAL::to_double(p.x());
  double y = CGAL::to_double(p.y());
  w.draw_point(x,y);
  
  return w;
}

template< class R >
leda_window&
operator>>(leda_window& w, Point_2<R>& p)
{
  typedef typename R::RT RT;
  leda_point l_p;
  leda_drawing_mode save = w.set_mode(leda_xor_mode);
  if (w >> l_p)
  {
      double x = l_p.xcoord();
      double y = l_p.ycoord();
      w << l_p;
      w.set_mode( save);
 
      w.draw_point(x,y);
      
      p = Point_2<R>( RT(x), RT(y));
  }
  else
  {
      w.set_mode( save);
  }
  return w;
}

template< class R >
leda_window&
read(leda_window& w, Point_2<R>& p)
{
  typedef typename R::RT RT;
  leda_point l_p;
  if (w >> l_p)
  {
      double x = l_p.xcoord();
      double y = l_p.ycoord();
      p = Point_2<R>( RT(x), RT(y));
  }
  return w;
}

template <class R>
void
read_mouse_plus(leda_window& w, Point_2<R>& p, int& button)
{
  typedef typename R::RT RT;
  double x, y;
  button = w.read_mouse(x,y);
  w.draw_point(x,y);
  
  p = Point_2<R>(RT(x), RT(y));
}

#endif // CGAL_LEDA_WINDOW_POINT_2
#endif // CGAL_POINT_2_H


#ifdef CGAL_SEGMENT_2_H
#ifndef CGAL_LEDA_WINDOW_SEGMENT_2
#define CGAL_LEDA_WINDOW_SEGMENT_2
template< class R >
leda_window&
operator<<(leda_window& w, const Segment_2<R>& s)
{
  w.draw_segment(CGAL::to_double(s.source().x()),
                 CGAL::to_double(s.source().y()),
                 CGAL::to_double(s.target().x()),
                 CGAL::to_double(s.target().y()));
  return w;
}

template< class R >
leda_window&
operator>>(leda_window& w, Segment_2<R>& s)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  leda_drawing_mode save = w.set_mode(leda_xor_mode);
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      w.set_mode( save);
      w.draw_segment(x1,y1, x2, y2);
      s = Segment_2<R>(Point_2<R>( RT(x1), RT(y1)),
                            Point_2<R>( RT(x2), RT(y2)));
  }
  else
  {
      w.set_mode( save);
  }
  return w;
}

template< class R >
leda_window&
read(leda_window& w, Segment_2<R>& s)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      s = Segment_2<R>(Point_2<R>( RT(x1), RT(y1)),
                            Point_2<R>( RT(x2), RT(y2)));
  }
  return w;
}
#endif // CGAL_LEDA_WINDOW_SEGMENT_2
#endif // CGAL_SEGMENT_2_H


#ifdef CGAL_LINE_2_H
#ifndef CGAL_LEDA_WINDOW_LINE_2
#define CGAL_LEDA_WINDOW_LINE_2

template< class R >
leda_window&
operator<<(leda_window& w, const Line_2<R>& l)
{
  Point_2<R> p1 = l.point(),
                  p2 = p1 + l.direction().vector();
  w.draw_line(CGAL::to_double(p1.x()), CGAL::to_double(p1.y()),
              CGAL::to_double(p2.x()), CGAL::to_double(p2.y()));
  return w;
}

template< class R >
leda_window&
operator>>(leda_window& w, Line_2<R>& l)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  leda_drawing_mode save = w.set_mode(leda_xor_mode);
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      w.set_mode( save);
      w.draw_line(x1,y1, x2, y2);
      l = Line_2<R>(Point_2<R>( RT(x1), RT(y1)),
                         Point_2<R>( RT(x2), RT(y2)));
  }
  else
  {
      w.set_mode( save);
  }
  return w;
}

template< class R >
leda_window&
read(leda_window& w, Line_2<R>& l)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      l = Line_2<R>(Point_2<R>( RT(x1), RT(y1)),
                         Point_2<R>( RT(x2), RT(y2)));
  }
  return w;
}
#endif // CGAL_LEDA_WINDOW_LINE_2
#endif //CGAL_LINE_2_H

#ifdef CGAL_RAY_2_H
#ifndef CGAL_LEDA_WINDOW_RAY_2
#define CGAL_LEDA_WINDOW_RAY_2
template< class R >
leda_window&
operator<<(leda_window& w, const Ray_2<R>& r)
{
  Point_2<R> p = r.point(0);
  Point_2<R> q = r.point(1);
  w.draw_ray(CGAL::to_double(p.x()),
             CGAL::to_double(p.y()),
             CGAL::to_double(q.x()),
             CGAL::to_double(q.y()));
  return w;
}

template< class R >
leda_window&
operator>>(leda_window& w, Ray_2<R>& r)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  leda_drawing_mode save = w.set_mode(leda_xor_mode);
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      w.set_mode( save);
      r = Ray_2<R>(Point_2<R>( RT(x1), RT(y1)),
                        Point_2<R>( RT(x2), RT(y2)));
      w << r;
  }
  else
  {
      w.set_mode( save);
  }
  return w;
}

template< class R >
leda_window&
read(leda_window& w, Ray_2<R>& r)
{
  typedef  typename R::RT  RT;
  leda_segment l_s;
  if ( w.read( l_s))
  {
      double x1 = l_s.xcoord1();
      double y1 = l_s.ycoord1();
      double x2 = l_s.xcoord2();
      double y2 = l_s.ycoord2();
      r = Ray_2<R>(Point_2<R>( RT(x1), RT(y1)),
                        Point_2<R>( RT(x2), RT(y2)));
  }
  return w;
}
#endif // CGAL_LEDA_WINDOW_RAY_2
#endif //CGAL_RAY_2_H

#ifdef CGAL_TRIANGLE_2_H
#ifndef CGAL_LEDA_WINDOW_TRIANGLE_2
#define CGAL_LEDA_WINDOW_TRIANGLE_2
template< class R >
leda_window&
operator<<(leda_window& w, const Triangle_2<R>& t)
{
  double x0 = CGAL::to_double(t.vertex(0).x()),
         y0 = CGAL::to_double(t.vertex(0).y()),
         x1 = CGAL::to_double(t.vertex(1).x()),
         y1 = CGAL::to_double(t.vertex(1).y()),
         x2 = CGAL::to_double(t.vertex(2).x()),
         y2 = CGAL::to_double(t.vertex(2).y());

  leda_color cl = w.get_fill_color();
  
  if (cl != leda_invisible) { // draw filled triangle ...
    w.draw_filled_triangle(leda_point(x0,y0), 
                           leda_point(x1,y1), 
                           leda_point(x2,y2), cl); 
  }	 
	 
	 
  w.draw_segment(x0, y0, x1, y1);
  w.draw_segment(x1, y1, x2, y2);
  w.draw_segment(x2, y2, x0, y0);
  return w;
}

template< class R >
leda_window&