demo/eps_demo.cc
changeset 1971 9a59a6cacfd9
child 2008 0820d8168cbb
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-1:000000000000 0:d1fac3a55b86
       
     1 /* -*- C++ -*-
       
     2  *
       
     3  * This file is a part of LEMON, a generic C++ optimization library
       
     4  *
       
     5  * Copyright (C) 2003-2006
       
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
       
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
       
     8  *
       
     9  * Permission to use, modify and distribute this software is granted
       
    10  * provided that this copyright notice appears in all copies. For
       
    11  * precise terms see the accompanying LICENSE file.
       
    12  *
       
    13  * This software is provided "AS IS" with no warranty of any kind,
       
    14  * express or implied, and with no claim as to its suitability for any
       
    15  * purpose.
       
    16  *
       
    17  */
       
    18 
       
    19 /// \ingroup demos
       
    20 /// \file
       
    21 /// \brief Demo of the EPS grawing class \ref EpsDrawer()
       
    22 ///
       
    23 /// This demo program shows examples how to use the class \ref
       
    24 /// EpsDrawer(). It takes no input but simply creates a file
       
    25 /// <tt>eps_demo.eps</tt> demonstrating the capability of \ref
       
    26 /// EpsDrawer().
       
    27 ///
       
    28 /// \include eps_demo.cc
       
    29 
       
    30 #include <cmath>
       
    31 #include <lemon/eps.h>
       
    32 
       
    33 using namespace lemon;
       
    34 
       
    35 void kosar(EpsDrawer &ed)
       
    36 {
       
    37   double d,r;
       
    38   
       
    39   r = sqrt(2);
       
    40   
       
    41   ed.save();
       
    42   
       
    43   ed.translate(256,256).scale(256,256);
       
    44   ed.lineWidth(1/256);
       
    45   
       
    46   ed.collect();
       
    47   
       
    48   ed.moveTo(0,1);
       
    49   
       
    50   for(d=0;d<M_PI*2*5;d+=.1)
       
    51     {
       
    52       ed.lineTo(sin(d*3),cos(d*5));
       
    53     }
       
    54   
       
    55   ed.stroke();
       
    56   ed.restore();
       
    57   
       
    58 }
       
    59 
       
    60 void fonts(EpsDrawer &ed)
       
    61 {
       
    62   ed.save().centerMode(true);
       
    63   
       
    64   ed.font("Helvetica").fontSize(90);
       
    65   ed.moveTo(256,512/3*2+50) << "Helvetica";
       
    66   ed.font("Courier");
       
    67   ed.moveTo(256,512/3+50) << "Courier" ;
       
    68   ed.font("Times-Roman");
       
    69   ed.moveTo(256,50) << "Times-Roman";
       
    70   
       
    71   ed.centerMode(false).restore();
       
    72 }
       
    73 
       
    74 int main()
       
    75 {
       
    76 
       
    77   EpsDrawer ed("eps_demo.eps",512,512);
       
    78   ed.scale(1,1);
       
    79   
       
    80   ed.color(0,0,0).collect();
       
    81   ed.moveTo(0,0).lineTo(0,512).lineTo(512,512).lineTo(512,0).closePath().fill();
       
    82   
       
    83   ed.lineWidth(4);
       
    84   
       
    85   for(double r=0;r<=256;r+=2)
       
    86     {
       
    87       ed.color(r/256.0,0,1-r/256.0).circle(256,256,r);
       
    88     }
       
    89   
       
    90   
       
    91   ed.save();
       
    92   ed.color(0,0,0);
       
    93   ed.translate(256,256);
       
    94   
       
    95   for(int i=0;i<18;i++)
       
    96     {
       
    97       ed.rotate(20);
       
    98       
       
    99       for(double r=0;r<=256;r+=20)
       
   100 	ed.fontSize(r/10+1).rotate(2).moveTo(0,r) << r;
       
   101       ed.rotate(-26);
       
   102       
       
   103     }
       
   104   
       
   105   ed.restore();
       
   106   
       
   107   fonts(ed.color(.7,.7,.7));
       
   108   ed.color(0,1,0);
       
   109   kosar(ed);
       
   110 }