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