[1971] | 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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[2391] | 5 | * Copyright (C) 2003-2007 |
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[1971] | 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<vector> |
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[2179] | 23 | #include<cmath> |
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[1971] | 24 | #include<lemon/maps.h> |
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| 25 | |
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| 26 | |
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| 27 | ///\ingroup misc |
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| 28 | ///\file |
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| 29 | ///\brief Tools to manage RGB colors. |
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| 30 | /// |
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| 31 | ///\author Alpar Juttner |
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| 32 | |
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| 33 | namespace lemon { |
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| 34 | |
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[2230] | 35 | |
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[2398] | 36 | /// \addtogroup misc |
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| 37 | /// @{ |
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[2174] | 38 | |
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[2398] | 39 | ///Data structure representing RGB colors. |
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[1971] | 40 | |
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[2398] | 41 | ///Data structure representing RGB colors. |
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| 42 | class Color |
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| 43 | { |
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| 44 | double _r,_g,_b; |
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| 45 | public: |
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| 46 | ///Default constructor |
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| 47 | Color() {} |
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| 48 | ///Constructor |
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| 49 | Color(double r,double g,double b) :_r(r),_g(g),_b(b) {}; |
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| 50 | ///Set the red component |
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| 51 | double & red() {return _r;} |
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| 52 | ///Return the red component |
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| 53 | const double & red() const {return _r;} |
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| 54 | ///Set the green component |
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| 55 | double & green() {return _g;} |
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| 56 | ///Return the green component |
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| 57 | const double & green() const {return _g;} |
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| 58 | ///Set the blue component |
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| 59 | double & blue() {return _b;} |
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| 60 | ///Return the blue component |
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| 61 | const double & blue() const {return _b;} |
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| 62 | ///Set the color components |
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| 63 | void set(double r,double g,double b) { _r=r;_g=g;_b=b; }; |
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| 64 | }; |
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[1971] | 65 | |
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[2174] | 66 | /// White color constant |
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| 67 | extern const Color WHITE; |
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| 68 | /// Black color constant |
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| 69 | extern const Color BLACK; |
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| 70 | /// Red color constant |
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| 71 | extern const Color RED; |
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| 72 | /// Green color constant |
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| 73 | extern const Color GREEN; |
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| 74 | /// Blue color constant |
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| 75 | extern const Color BLUE; |
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| 76 | /// Yellow color constant |
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| 77 | extern const Color YELLOW; |
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| 78 | /// Magenta color constant |
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| 79 | extern const Color MAGENTA; |
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| 80 | /// Cyan color constant |
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| 81 | extern const Color CYAN; |
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| 82 | /// Grey color constant |
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| 83 | extern const Color GREY; |
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| 84 | /// Dark red color constant |
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| 85 | extern const Color DARK_RED; |
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| 86 | /// Dark green color constant |
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| 87 | extern const Color DARK_GREEN; |
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| 88 | /// Drak blue color constant |
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| 89 | extern const Color DARK_BLUE; |
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| 90 | /// Dark yellow color constant |
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| 91 | extern const Color DARK_YELLOW; |
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| 92 | /// Dark magenta color constant |
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| 93 | extern const Color DARK_MAGENTA; |
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| 94 | /// Dark cyan color constant |
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| 95 | extern const Color DARK_CYAN; |
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| 96 | |
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[2398] | 97 | ///Map <tt>int</tt>s to different \ref Color "Color"s |
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[1971] | 98 | |
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[2398] | 99 | ///This map assigns one of the predefined \ref Color "Color"s to |
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| 100 | ///each <tt>int</tt>. It is possible to change the colors as well as |
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| 101 | ///their number. The integer range is cyclically mapped to the |
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| 102 | ///provided set of colors. |
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| 103 | /// |
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| 104 | ///This is a true \ref concepts::ReferenceMap "reference map", so |
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| 105 | ///you can also change the actual colors. |
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[1971] | 106 | |
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[2398] | 107 | class Palette : public MapBase<int,Color> |
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| 108 | { |
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| 109 | std::vector<Color> colors; |
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| 110 | public: |
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| 111 | ///Constructor |
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[1971] | 112 | |
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[2398] | 113 | ///Constructor |
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| 114 | ///\param num the number of the allocated colors. If it is \c -1, |
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| 115 | ///the default color configuration is set up (26 color plus the |
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| 116 | ///white). If \c num is less then 26/27 then the default color |
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| 117 | ///list is cut. Otherwise the color list is filled repeatedly with |
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| 118 | ///the default color list. (The colors can be changed later on.) |
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| 119 | ///\param have_white indicates whether white is amongst the |
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| 120 | ///provided color (\c true) or not (\c false). If it is true, |
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| 121 | ///white will be assigned to \c 0. |
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| 122 | Palette(int num=-1,bool have_white=false) |
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| 123 | { |
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| 124 | if (num==0) return; |
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| 125 | do { |
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| 126 | if(have_white) colors.push_back(Color(1,1,1)); |
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| 127 | |
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| 128 | colors.push_back(Color(0,0,0)); |
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| 129 | colors.push_back(Color(1,0,0)); |
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| 130 | colors.push_back(Color(0,1,0)); |
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| 131 | colors.push_back(Color(0,0,1)); |
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| 132 | colors.push_back(Color(1,1,0)); |
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| 133 | colors.push_back(Color(1,0,1)); |
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| 134 | colors.push_back(Color(0,1,1)); |
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| 135 | |
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| 136 | colors.push_back(Color(.5,0,0)); |
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| 137 | colors.push_back(Color(0,.5,0)); |
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| 138 | colors.push_back(Color(0,0,.5)); |
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| 139 | colors.push_back(Color(.5,.5,0)); |
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| 140 | colors.push_back(Color(.5,0,.5)); |
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| 141 | colors.push_back(Color(0,.5,.5)); |
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| 142 | |
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| 143 | colors.push_back(Color(.5,.5,.5)); |
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| 144 | colors.push_back(Color(1,.5,.5)); |
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| 145 | colors.push_back(Color(.5,1,.5)); |
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| 146 | colors.push_back(Color(.5,.5,1)); |
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| 147 | colors.push_back(Color(1,1,.5)); |
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| 148 | colors.push_back(Color(1,.5,1)); |
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| 149 | colors.push_back(Color(.5,1,1)); |
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| 150 | |
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| 151 | colors.push_back(Color(1,.5,0)); |
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| 152 | colors.push_back(Color(.5,1,0)); |
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| 153 | colors.push_back(Color(1,0,.5)); |
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| 154 | colors.push_back(Color(0,1,.5)); |
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| 155 | colors.push_back(Color(0,.5,1)); |
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| 156 | colors.push_back(Color(.5,0,1)); |
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| 157 | } while(int(colors.size())<num); |
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| 158 | // colors.push_back(Color(1,1,1)); |
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| 159 | if(num>=0) colors.resize(num); |
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| 160 | } |
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| 161 | ///\e |
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| 162 | Color &operator[](int i) |
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| 163 | { |
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| 164 | return colors[i%colors.size()]; |
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| 165 | } |
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| 166 | ///\e |
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| 167 | const Color &operator[](int i) const |
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| 168 | { |
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| 169 | return colors[i%colors.size()]; |
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| 170 | } |
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| 171 | ///\e |
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| 172 | void set(int i,const Color &c) |
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| 173 | { |
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| 174 | colors[i%colors.size()]=c; |
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| 175 | } |
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| 176 | ///\e |
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| 177 | void add(const Color &c) |
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| 178 | { |
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| 179 | colors.push_back(c); |
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| 180 | } |
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| 181 | |
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| 182 | ///Sets the number of the exiting colors. |
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| 183 | void resize(int s) { colors.resize(s);} |
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| 184 | ///Returns the number of the existing colors. |
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| 185 | int size() const { return int(colors.size());} |
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| 186 | }; |
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| 187 | |
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| 188 | ///Returns a visible distinct \ref Color |
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| 189 | |
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| 190 | ///Returns a \ref Color which is as different from the given parameter |
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| 191 | ///as it is possible. |
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| 192 | inline Color distantColor(const Color &c) |
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[1971] | 193 | { |
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[2398] | 194 | return Color(c.red()<.5?1:0,c.green()<.5?1:0,c.blue()<.5?1:0); |
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| 195 | } |
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| 196 | ///Returns black for light colors and white for the dark ones. |
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[1971] | 197 | |
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[2398] | 198 | ///Returns black for light colors and white for the dark ones. |
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| 199 | inline Color distantBW(const Color &c){ |
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| 200 | return (.2125*c.red()+.7154*c.green()+.0721*c.blue())<.5 ? WHITE : BLACK; |
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[1971] | 201 | } |
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| 202 | |
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[2398] | 203 | /// @} |
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[2174] | 204 | |
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[1971] | 205 | } //END OF NAMESPACE LEMON |
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| 206 | |
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| 207 | #endif // LEMON_COLOR_H |
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