postscript_file_stream.h

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// 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/Postscript_file_stream.h,v $
// $Revision: 1.9 $ $Date: 2003/10/21 12:25:45 $
// $Name:  $
//
// Author(s)     : Stefan Schirra
 

#ifndef CGAL_POSTSCRIPT_FILE_STREAM_H
#define CGAL_POSTSCRIPT_FILE_STREAM_H

#include <CGAL/LEDA_basic.h>
#include <CGAL/IO/Color.h>
#ifdef LEDA_PS_FILE_H
# error Internal CGAL error: <LEDA/ps_file.h> should not have been included yet
#else
# include <LEDA/basic.h>
# include <LEDA/list.h>
# include <LEDA/string.h>
# include <LEDA/stream.h>
# include <LEDA/point.h>
# include <LEDA/segment.h>
# include <LEDA/line.h>
# include <LEDA/circle.h>
# include <LEDA/polygon.h>
# if (__LEDA__ >= 400)
#  include <LEDA/rectangle.h>
# endif // 400
# include <LEDA/color.h>
# include <LEDA/window.h>
# if (__LEDA__ >= 400)
#  include <LEDA/rat_window.h>
#  include <LEDA/geo_graph.h>
# endif // 400
# define private protected
# include <LEDA/ps_file.h>
# undef private
#endif // LEDA_PS_FILE_H
#include <CGAL/IO/cgal_logo.h>

CGAL_BEGIN_NAMESPACE


typedef CGAL_LEDA_SCOPE::ps_file   leda_ps_file;

class Postscript_file_stream : public leda_ps_file
{
 public:
   Postscript_file_stream(double w,double h, leda_string name="CGAL_unnamed.ps")
   : leda_ps_file(w/40.0, h/40.0, name)
   {}

   Postscript_file_stream(leda_string name="CGAL_unnamed.ps")
    : leda_ps_file( name )
   { set_draw_bb(false); }

   void display() {}
   void display(int, int) {}
   int read_mouse(double& , double& ) {return 1;}
   leda_color set_fg_color(leda_color c) { return set_color(c); }
   void set_font(const leda_string& ls) { set_text_font(ls); }
   void change_rgb(const Color&);
   bool is_in_colormode();
};


inline
void
Postscript_file_stream::change_rgb(const Color& c)
{
  file << double(c.r())/255.0 << " "
       << double(c.g())/255.0 << " "
       << double(c.b())/255.0 << " srgb\n";
}


inline
bool
Postscript_file_stream::is_in_colormode()
{ return (outputmode== CGAL_LEDA_SCOPE::colored_mode); }


inline
Postscript_file_stream&
operator<<(Postscript_file_stream& w, const Color& c)
{
  assert( w.is_in_colormode() );
  w.change_rgb(c);
  return w;
}


inline
void
cgalize(Postscript_file_stream& w)
{
  w.set_line_width( 1);
}


inline
Postscript_file_stream*
create_demo_postscript_file_stream( float w = 512.0, float h = 512.0,
                                    const char* str = "CGAL_unnamed.ps",
                                    double x_extension = 1.0)
{
  Postscript_file_stream* Wptr = new Postscript_file_stream( w, h, str);
  cgalize( *Wptr);
  double y_extension = x_extension * h / w;
  Wptr->init(-x_extension, x_extension, -y_extension);
  return Wptr;
}


inline
Postscript_file_stream*
create_and_display_demo_postscript_file_stream(float w = 512.0, 
                    float h = 512.0, const char* str = "CGAL_unnamed.ps",
                    double x_extension = 1.0)
{
  Postscript_file_stream* Wptr = new Postscript_file_stream( w, h, str);
  cgalize( *Wptr);
  double y_extension = x_extension * h / w;
  Wptr->init(-x_extension, x_extension, -y_extension);
  return Wptr;
}


#endif // CGAL_POSTSCRIPT_FILE_STREAM_H

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

#ifdef CGAL_POINT_2_H
#ifndef CGAL_POSTSCRIPT_FILE_STREAM_POINT_2
#define CGAL_POSTSCRIPT_FILE_STREAM_POINT_2
template< class R >
Postscript_file_stream&
operator<<(Postscript_file_stream& 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 >
Postscript_file_stream&
operator>>(Postscript_file_stream& 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 >
Postscript_file_stream&
read(Postscript_file_stream& 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(Postscript_file_stream& 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_POSTSCRIPT_FILE_STREAM_POINT_2
#endif // CGAL_POINT_2_H


#ifdef CGAL_SEGMENT_2_H
#ifndef CGAL_POSTSCRIPT_FILE_STREAM_SEGMENT_2
#define CGAL_POSTSCRIPT_FILE_STREAM_SEGMENT_2
template< class R >
Postscript_file_stream&
operator<<(Postscript_file_stream& 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 >
Postscript_file_stream&
operator>>(Postscript_file_stream& 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 >
Postscript_file_stream&
read(Postscript_file_stream& 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_POSTSCRIPT_FILE_STREAM_SEGMENT_2
#endif // CGAL_SEGMENT_2_H


#ifdef CGAL_LINE_2_H
#ifndef CGAL_POSTSCRIPT_FILE_STREAM_LINE_2
#define CGAL_POSTSCRIPT_FILE_STREAM_LINE_2

template< class R >
Postscript_file_stream&
operator<<(Postscript_file_stream& 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 >
Postscript_file_stream&
operator>>(Postscript_file_stream& 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 >
Postscript_file_stream&
read(Postscript_file_stream& 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_POSTSCRIPT_FILE_STREAM_LINE_2
#endif //CGAL_LINE_2_H

#ifdef CGAL_RAY_2_H
#ifndef CGAL_POSTSCRIPT_FILE_STREAM_RAY_2
#define CGAL_POSTSCRIPT_FILE_STREAM_RAY_2
template< class R >
Postscript_file_stream&
operator<<(Postscript_file_stream& 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 >
Postscript_file_stream&
operator>>(Postscript_file_stream& 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 >
Postscript_file_stream&
read(Postscript_file_stream& 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();