1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/lemon/color.h Thu Apr 03 11:10:49 2008 +0100
1.3 @@ -0,0 +1,207 @@
1.4 +/* -*- C++ -*-
1.5 + *
1.6 + * This file is a part of LEMON, a generic C++ optimization library
1.7 + *
1.8 + * Copyright (C) 2003-2008
1.9 + * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
1.10 + * (Egervary Research Group on Combinatorial Optimization, EGRES).
1.11 + *
1.12 + * Permission to use, modify and distribute this software is granted
1.13 + * provided that this copyright notice appears in all copies. For
1.14 + * precise terms see the accompanying LICENSE file.
1.15 + *
1.16 + * This software is provided "AS IS" with no warranty of any kind,
1.17 + * express or implied, and with no claim as to its suitability for any
1.18 + * purpose.
1.19 + *
1.20 + */
1.21 +
1.22 +#ifndef LEMON_COLOR_H
1.23 +#define LEMON_COLOR_H
1.24 +
1.25 +#include<vector>
1.26 +#include<lemon/math.h>
1.27 +#include<lemon/maps.h>
1.28 +
1.29 +
1.30 +///\ingroup misc
1.31 +///\file
1.32 +///\brief Tools to manage RGB colors.
1.33 +///
1.34 +///\author Alpar Juttner
1.35 +
1.36 +namespace lemon {
1.37 +
1.38 +
1.39 + /// \addtogroup misc
1.40 + /// @{
1.41 +
1.42 + ///Data structure representing RGB colors.
1.43 +
1.44 + ///Data structure representing RGB colors.
1.45 + class Color
1.46 + {
1.47 + double _r,_g,_b;
1.48 + public:
1.49 + ///Default constructor
1.50 + Color() {}
1.51 + ///Constructor
1.52 + Color(double r,double g,double b) :_r(r),_g(g),_b(b) {};
1.53 + ///Set the red component
1.54 + double & red() {return _r;}
1.55 + ///Return the red component
1.56 + const double & red() const {return _r;}
1.57 + ///Set the green component
1.58 + double & green() {return _g;}
1.59 + ///Return the green component
1.60 + const double & green() const {return _g;}
1.61 + ///Set the blue component
1.62 + double & blue() {return _b;}
1.63 + ///Return the blue component
1.64 + const double & blue() const {return _b;}
1.65 + ///Set the color components
1.66 + void set(double r,double g,double b) { _r=r;_g=g;_b=b; };
1.67 + };
1.68 +
1.69 + /// White color constant
1.70 + extern const Color WHITE;
1.71 + /// Black color constant
1.72 + extern const Color BLACK;
1.73 + /// Red color constant
1.74 + extern const Color RED;
1.75 + /// Green color constant
1.76 + extern const Color GREEN;
1.77 + /// Blue color constant
1.78 + extern const Color BLUE;
1.79 + /// Yellow color constant
1.80 + extern const Color YELLOW;
1.81 + /// Magenta color constant
1.82 + extern const Color MAGENTA;
1.83 + /// Cyan color constant
1.84 + extern const Color CYAN;
1.85 + /// Grey color constant
1.86 + extern const Color GREY;
1.87 + /// Dark red color constant
1.88 + extern const Color DARK_RED;
1.89 + /// Dark green color constant
1.90 + extern const Color DARK_GREEN;
1.91 + /// Drak blue color constant
1.92 + extern const Color DARK_BLUE;
1.93 + /// Dark yellow color constant
1.94 + extern const Color DARK_YELLOW;
1.95 + /// Dark magenta color constant
1.96 + extern const Color DARK_MAGENTA;
1.97 + /// Dark cyan color constant
1.98 + extern const Color DARK_CYAN;
1.99 +
1.100 + ///Map <tt>int</tt>s to different \ref Color "Color"s
1.101 +
1.102 + ///This map assigns one of the predefined \ref Color "Color"s to
1.103 + ///each <tt>int</tt>. It is possible to change the colors as well as
1.104 + ///their number. The integer range is cyclically mapped to the
1.105 + ///provided set of colors.
1.106 + ///
1.107 + ///This is a true \ref concepts::ReferenceMap "reference map", so
1.108 + ///you can also change the actual colors.
1.109 +
1.110 + class Palette : public MapBase<int,Color>
1.111 + {
1.112 + std::vector<Color> colors;
1.113 + public:
1.114 + ///Constructor
1.115 +
1.116 + ///Constructor
1.117 + ///\param num the number of the allocated colors. If it is \c -1,
1.118 + ///the default color configuration is set up (26 color plus the
1.119 + ///white). If \c num is less then 26/27 then the default color
1.120 + ///list is cut. Otherwise the color list is filled repeatedly with
1.121 + ///the default color list. (The colors can be changed later on.)
1.122 + ///\param have_white indicates whether white is amongst the
1.123 + ///provided color (\c true) or not (\c false). If it is true,
1.124 + ///white will be assigned to \c 0.
1.125 + Palette(int num=-1,bool have_white=false)
1.126 + {
1.127 + if (num==0) return;
1.128 + do {
1.129 + if(have_white) colors.push_back(Color(1,1,1));
1.130 +
1.131 + colors.push_back(Color(0,0,0));
1.132 + colors.push_back(Color(1,0,0));
1.133 + colors.push_back(Color(0,1,0));
1.134 + colors.push_back(Color(0,0,1));
1.135 + colors.push_back(Color(1,1,0));
1.136 + colors.push_back(Color(1,0,1));
1.137 + colors.push_back(Color(0,1,1));
1.138 +
1.139 + colors.push_back(Color(.5,0,0));
1.140 + colors.push_back(Color(0,.5,0));
1.141 + colors.push_back(Color(0,0,.5));
1.142 + colors.push_back(Color(.5,.5,0));
1.143 + colors.push_back(Color(.5,0,.5));
1.144 + colors.push_back(Color(0,.5,.5));
1.145 +
1.146 + colors.push_back(Color(.5,.5,.5));
1.147 + colors.push_back(Color(1,.5,.5));
1.148 + colors.push_back(Color(.5,1,.5));
1.149 + colors.push_back(Color(.5,.5,1));
1.150 + colors.push_back(Color(1,1,.5));
1.151 + colors.push_back(Color(1,.5,1));
1.152 + colors.push_back(Color(.5,1,1));
1.153 +
1.154 + colors.push_back(Color(1,.5,0));
1.155 + colors.push_back(Color(.5,1,0));
1.156 + colors.push_back(Color(1,0,.5));
1.157 + colors.push_back(Color(0,1,.5));
1.158 + colors.push_back(Color(0,.5,1));
1.159 + colors.push_back(Color(.5,0,1));
1.160 + } while(int(colors.size())<num);
1.161 + // colors.push_back(Color(1,1,1));
1.162 + if(num>=0) colors.resize(num);
1.163 + }
1.164 + ///\e
1.165 + Color &operator[](int i)
1.166 + {
1.167 + return colors[i%colors.size()];
1.168 + }
1.169 + ///\e
1.170 + const Color &operator[](int i) const
1.171 + {
1.172 + return colors[i%colors.size()];
1.173 + }
1.174 + ///\e
1.175 + void set(int i,const Color &c)
1.176 + {
1.177 + colors[i%colors.size()]=c;
1.178 + }
1.179 + ///\e
1.180 + void add(const Color &c)
1.181 + {
1.182 + colors.push_back(c);
1.183 + }
1.184 +
1.185 + ///Sets the number of the exiting colors.
1.186 + void resize(int s) { colors.resize(s);}
1.187 + ///Returns the number of the existing colors.
1.188 + int size() const { return int(colors.size());}
1.189 + };
1.190 +
1.191 + ///Returns a visible distinct \ref Color
1.192 +
1.193 + ///Returns a \ref Color which is as different from the given parameter
1.194 + ///as it is possible.
1.195 + inline Color distantColor(const Color &c)
1.196 + {
1.197 + return Color(c.red()<.5?1:0,c.green()<.5?1:0,c.blue()<.5?1:0);
1.198 + }
1.199 + ///Returns black for light colors and white for the dark ones.
1.200 +
1.201 + ///Returns black for light colors and white for the dark ones.
1.202 + inline Color distantBW(const Color &c){
1.203 + return (.2125*c.red()+.7154*c.green()+.0721*c.blue())<.5 ? WHITE : BLACK;
1.204 + }
1.205 +
1.206 + /// @}
1.207 +
1.208 +} //END OF NAMESPACE LEMON
1.209 +
1.210 +#endif // LEMON_COLOR_H