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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1528 | jag | 1 | /* |
| 2 | * color.h |
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| 2097 | jag | 3 | * DIN Is Noise is copyright (c) 2006-2024 Jagannathan Sampath |
| 1713 | jag | 4 | * DIN Is Noise is released under GNU Public License 2.0 |
| 1528 | jag | 5 | * For more information, please visit https://dinisnoise.org/ |
| 6 | */ |
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| 7 | |||
| 8 | |||
| 9 | #ifndef __color__ |
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| 10 | #define __color__ |
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| 11 | |||
| 12 | #include "dingl.h" |
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| 13 | #include "random.h" |
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| 14 | #include "utils.h" |
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| 1897 | jag | 15 | #include <fstream> |
| 1528 | jag | 16 | |
| 17 | inline void hex2rgb (unsigned char hr, unsigned char hg, unsigned char hb, float& r, float& g, float& b) { |
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| 18 | const unsigned char ff = 0xff; |
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| 19 | const float ff1 = 1.0f / ff; |
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| 20 | r = hr * ff1; |
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| 21 | g = hg * ff1; |
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| 22 | b = hb * ff1; |
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| 23 | } |
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| 24 | |||
| 25 | struct color { |
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| 26 | float r, g, b; |
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| 27 | color (float rr = 0, float gg = 0, float bb = 0) { |
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| 28 | r = rr; |
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| 29 | g = gg; |
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| 30 | b = bb; |
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| 31 | } |
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| 32 | color (const color& t, const color& s) { |
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| 33 | r = t.r - s.r; |
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| 34 | g = t.g - s.g; |
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| 35 | b = t.b - s.b; |
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| 36 | } |
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| 37 | color& operator*= (float v) { |
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| 38 | r *= v; |
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| 39 | g *= v; |
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| 40 | b *= v; |
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| 41 | return *this; |
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| 42 | } |
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| 43 | }; |
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| 44 | |||
| 45 | inline void set_rnd_color (float& r, float& g, float& b, float m0 = 0, float m1 = 1) { |
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| 46 | rnd<float> rd (m0, m1); |
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| 47 | r = rd(); g = rd (); b = rd (); |
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| 48 | } |
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| 49 | |||
| 50 | inline void set_color (unsigned char hr, unsigned char hg, unsigned char hb, float a = 1) { |
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| 51 | float r, g, b; |
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| 52 | hex2rgb (hr, hg, hb, r, g, b); |
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| 53 | glColor4f (r, g, b, a); |
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| 54 | } |
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| 55 | |||
| 56 | inline void blend_color (const color& source, const color& target, color& result, float amount) { |
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| 57 | color delta (target, source); |
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| 58 | delta *= amount; |
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| 59 | result.r = source.r + delta.r; |
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| 60 | result.g = source.g + delta.g; |
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| 61 | result.b = source.b + delta.b; |
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| 62 | } |
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| 63 | |||
| 64 | struct color_data_t { |
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| 65 | color clr[2]; |
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| 66 | color out; |
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| 67 | int i; |
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| 68 | float p; |
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| 69 | }; |
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| 70 | |||
| 71 | struct get_color { |
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| 72 | static color_data_t data; |
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| 73 | static void update_data (); |
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| 74 | virtual color& operator()() = 0; |
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| 75 | }; |
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| 76 | |||
| 77 | struct get_fixed_color : get_color { |
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| 78 | int ii; |
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| 79 | get_fixed_color (int _i) { ii = _i;} |
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| 80 | color& operator() () {return data.clr [ii];} |
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| 81 | }; |
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| 82 | |||
| 83 | struct get_random_color : get_color { |
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| 84 | color& operator() () { |
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| 85 | color& c0 = data.clr[0]; |
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| 86 | color& c1 = data.clr[1]; |
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| 87 | rnd<float> r(c0.r, c1.r), g(c0.g, c1.g), b(c0.b, c1.b); |
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| 88 | data.out.r = r(); data.out.g = g(); data.out.b = b(); |
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| 89 | return data.out; |
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| 90 | } |
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| 91 | }; |
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| 92 | |||
| 93 | struct get_blend_color : get_color { |
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| 94 | color& operator() () { |
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| 95 | color& c0 = data.clr[0]; |
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| 96 | color& c1 = data.clr[1]; |
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| 97 | blend_color (c0, c1, data.out, data.p); |
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| 98 | return data.out; |
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| 99 | } |
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| 100 | }; |
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| 101 | |||
| 102 | |||
| 103 | struct colorer_t { |
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| 104 | enum {TOP, BOTTOM, BLEND, RANDOM}; |
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| 105 | static const char* s_schemes []; |
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| 1924 | jag | 106 | #define maxs_ 4 |
| 107 | #define maxs__1 (maxs_ - 1) |
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| 1528 | jag | 108 | int i; |
| 1924 | jag | 109 | get_color* schemes[maxs_]; |
| 1528 | jag | 110 | color& operator() () { |
| 111 | get_color& gci = *schemes[i]; |
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| 112 | return gci (); |
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| 113 | } |
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| 114 | colorer_t& operator+= (int ds) { |
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| 115 | i += ds; |
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| 1924 | jag | 116 | wrap (0, i, maxs__1); |
| 1528 | jag | 117 | return *this; |
| 118 | } |
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| 119 | const char* get_scheme_name () { |
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| 120 | return s_schemes[i]; |
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| 121 | } |
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| 122 | }; |
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| 123 | |||
| 1897 | jag | 124 | std::ostream& operator<< (std::ostream&, colorer_t&); |
| 125 | std::istream& operator>> (std::istream&, colorer_t&); |
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| 126 | |||
| 127 | |||
| 1528 | jag | 128 | #endif |