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