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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 #ifndef LEMON_COLOR_H |
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20 #define LEMON_COLOR_H |
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21 |
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22 #include <sys/time.h> |
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23 |
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24 #include<iostream> |
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25 #include<fstream> |
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26 #include<sstream> |
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27 #include<algorithm> |
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28 #include<vector> |
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29 |
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30 #include <ctime> |
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31 #include <cmath> |
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32 |
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33 #include<lemon/bits/invalid.h> |
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34 #include<lemon/xy.h> |
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35 #include<lemon/maps.h> |
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36 #include<lemon/bezier.h> |
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37 |
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38 |
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39 ///\ingroup misc |
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40 ///\file |
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41 ///\brief Tools to manage RGB colors. |
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42 /// |
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43 ///\author Alpar Juttner |
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44 |
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45 namespace lemon { |
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46 |
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47 /// \addtogroup misc |
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48 /// @{ |
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49 |
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50 ///Data structure representing RGB colors. |
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51 |
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52 ///Data structure representing RGB colors. |
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53 ///\ingroup misc |
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54 class Color |
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55 { |
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56 double _r,_g,_b; |
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57 public: |
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58 ///Default constructor |
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59 Color() {} |
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60 ///Constructor |
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61 Color(double r,double g,double b) :_r(r),_g(g),_b(b) {}; |
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62 ///Set the red component |
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63 double & red() {return _r;} |
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64 ///Return the red component |
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65 const double & red() const {return _r;} |
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66 ///Set the green component |
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67 double & green() {return _g;} |
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68 ///Return the green component |
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69 const double & green() const {return _g;} |
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70 ///Set the blue component |
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71 double & blue() {return _b;} |
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72 ///Return the blue component |
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73 const double & blue() const {return _b;} |
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74 ///Set the color components |
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75 void set(double r,double g,double b) { _r=r;_g=g;_b=b; }; |
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76 }; |
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77 |
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78 /// White color constant |
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79 extern const Color WHITE; |
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80 /// Black color constant |
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81 extern const Color BLACK; |
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82 /// Red color constant |
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83 extern const Color RED; |
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84 /// Green color constant |
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85 extern const Color GREEN; |
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86 /// Blue color constant |
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87 extern const Color BLUE; |
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88 /// Yellow color constant |
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89 extern const Color YELLOW; |
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90 /// Magenta color constant |
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91 extern const Color MAGENTA; |
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92 /// Cyan color constant |
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93 extern const Color CYAN; |
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94 /// Grey color constant |
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95 extern const Color GREY; |
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96 /// Dark red color constant |
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97 extern const Color DARK_RED; |
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98 /// Dark green color constant |
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99 extern const Color DARK_GREEN; |
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100 /// Drak blue color constant |
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101 extern const Color DARK_BLUE; |
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102 /// Dark yellow color constant |
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103 extern const Color DARK_YELLOW; |
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104 /// Dark magenta color constant |
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105 extern const Color DARK_MAGENTA; |
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106 /// Dark cyan color constant |
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107 extern const Color DARK_CYAN; |
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108 |
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109 ///Maps <tt>int</tt>s to different \ref Color "Color"s |
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110 |
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111 ///This map assigns one of the predefined \ref Color "Color"s |
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112 ///to each <tt>int</tt>. It is possible to change the colors as well as their |
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113 ///number. The integer range is cyclically mapped to the provided set of colors. |
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114 /// |
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115 ///This is a true \ref concept::ReferenceMap "reference map", so you can also |
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116 ///change the actual colors. |
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117 |
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118 class Palette : public MapBase<int,Color> |
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119 { |
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120 std::vector<Color> colors; |
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121 public: |
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122 ///Constructor |
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123 |
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124 ///Constructor |
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125 ///\param have_white indicates whether white is |
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126 ///amongst the provided color (\c true) or not (\c false). If it is true, |
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127 ///white will be assigned to \c 0. |
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128 ///\param num the number of the allocated colors. If it is \c 0, |
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129 ///the default color configuration is set up (26 color plus the white). |
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130 ///If \c num is less then 26/27 then the default color list is cut. Otherwise |
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131 ///the color list is filled repeatedly with the default color list. |
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132 ///(The colors can be changed later on.) |
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133 Palette(bool have_white=false,int num=0) |
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134 { |
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135 do { |
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136 if(have_white) colors.push_back(Color(1,1,1)); |
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137 |
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138 colors.push_back(Color(0,0,0)); |
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139 colors.push_back(Color(1,0,0)); |
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140 colors.push_back(Color(0,1,0)); |
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141 colors.push_back(Color(0,0,1)); |
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142 colors.push_back(Color(1,1,0)); |
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143 colors.push_back(Color(1,0,1)); |
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144 colors.push_back(Color(0,1,1)); |
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145 |
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146 colors.push_back(Color(.5,0,0)); |
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147 colors.push_back(Color(0,.5,0)); |
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148 colors.push_back(Color(0,0,.5)); |
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149 colors.push_back(Color(.5,.5,0)); |
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150 colors.push_back(Color(.5,0,.5)); |
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151 colors.push_back(Color(0,.5,.5)); |
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152 |
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153 colors.push_back(Color(.5,.5,.5)); |
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154 colors.push_back(Color(1,.5,.5)); |
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155 colors.push_back(Color(.5,1,.5)); |
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156 colors.push_back(Color(.5,.5,1)); |
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157 colors.push_back(Color(1,1,.5)); |
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158 colors.push_back(Color(1,.5,1)); |
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159 colors.push_back(Color(.5,1,1)); |
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160 |
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161 colors.push_back(Color(1,.5,0)); |
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162 colors.push_back(Color(.5,1,0)); |
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163 colors.push_back(Color(1,0,.5)); |
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164 colors.push_back(Color(0,1,.5)); |
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165 colors.push_back(Color(0,.5,1)); |
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166 colors.push_back(Color(.5,0,1)); |
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167 } while(int(colors.size())<num); |
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168 // colors.push_back(Color(1,1,1)); |
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169 if(num>0) colors.resize(num); |
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170 } |
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171 ///\e |
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172 Color &operator[](int i) |
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173 { |
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174 return colors[i%colors.size()]; |
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175 } |
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176 ///\e |
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177 const Color &operator[](int i) const |
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178 { |
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179 return colors[i%colors.size()]; |
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180 } |
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181 ///\e |
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182 void set(int i,const Color &c) |
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183 { |
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184 colors[i%colors.size()]=c; |
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185 } |
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186 ///Sets the number of the exiting colors. |
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187 void resize(int s) { colors.resize(s);} |
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188 ///Returns the number of the existing colors. |
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189 std::size_t size() const { return colors.size();} |
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190 }; |
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191 |
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192 ///Returns a visible distinct \ref Color |
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193 |
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194 ///Returns a \ref Color which is as different from the given parameter |
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195 ///as it is possible. |
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196 inline Color distantColor(const Color &c) |
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197 { |
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198 return Color(c.red()<.5?1:0,c.green()<.5?1:0,c.blue()<.5?1:0); |
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199 } |
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200 ///Returns black for light colors and white for the dark ones. |
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201 |
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202 ///Returns black for light colors and white for the dark ones. |
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203 inline Color distantBW(const Color &c){ |
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204 return (.2125*c.red()+.7154*c.green()+.0721*c.blue())<.5 ? WHITE : BLACK; |
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205 } |
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206 |
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207 /// @} |
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208 |
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209 } //END OF NAMESPACE LEMON |
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210 |
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211 #endif // LEMON_COLOR_H |