mirror of
https://gitlab.com/drummyfish/anarch.git
synced 2024-11-10 19:25:08 -05:00
67 lines
3.0 KiB
C
67 lines
3.0 KiB
C
|
/*
|
||
|
|
General purpose HSV-based 256 color palette.
|
||
|
|
|
||
|
|
Define PALETTE_FORMAT_565 to use the RGB565 palette, otherwise RGB8 is used.
|
||
|
|
|
||
|
|
by Drummyfish, released under CC0 1.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PALETTE_256_H
|
||
|
|
#define PALETTE_256_H
|
||
|
|
|
||
|
|
const uint16_t paletteRGB565[256] = {
|
||
|
|
0, 8484, 19017, 27501, 38034, 46518, 57051, 65535, 8354, 16709, 25096, 33450,
|
||
|
|
41805, 50192, 58546, 64853, 8386, 16805, 25224, 33642, 42061, 50480, 58898,
|
||
|
|
65269, 6402, 14853, 23304, 29706, 38157, 46608, 55058, 61429, 4354, 10757,
|
||
|
|
17160, 23562, 29965, 36368, 42770, 49141, 4355, 10758, 17161, 21516, 27920,
|
||
|
|
34323, 38678, 45049, 4323, 10759, 17163, 21519, 27923, 34327, 38683, 45055,
|
||
|
|
4292, 10632, 17004, 21296, 27668, 34008, 38300, 44671, 4260, 10568, 16908,
|
||
|
|
23216, 29524, 35864, 42172, 48479, 6308, 14664, 23052, 29360, 37716, 46104,
|
||
|
|
54460, 60767, 8355, 16710, 25098, 33453, 41809, 50196, 58552, 64859, 8257,
|
||
|
|
16546, 24836, 33093, 41382, 49672, 57929, 64170, 8353, 16738, 25124, 33509,
|
||
|
|
41894, 50248, 58633, 64970, 6401, 12802, 21252, 27653, 36102, 42504, 50953,
|
||
|
|
57322, 2305, 6658, 11012, 15365, 19718, 24072, 28425, 32746, 2306, 4612, 8967,
|
||
|
|
11273, 13580, 17934, 20240, 22515, 2307, 4615, 8971, 11279, 13587, 17943, 20251,
|
||
|
|
22527, 2180, 4392, 8652, 10864, 13076, 17304, 19516, 21727, 2116, 6312, 10508,
|
||
|
|
14672, 18868, 23064, 25180, 29375, 6212, 12456, 20748, 26960, 35252, 41496,
|
||
|
|
49756, 55999, 8258, 16549, 24840, 33099, 41390, 49681, 57940, 64183, 8192,
|
||
|
|
16384, 24576, 32768, 40960, 49152, 57344, 63488, 8320, 16640, 24960, 33312,
|
||
|
|
41632, 49952, 58304, 64576, 6400, 14848, 23296, 29696, 38144, 46592, 52992,
|
||
|
|
61408, 2304, 6656, 8960, 13312, 15616, 19968, 22272, 26592, 256, 513, 769, 1026,
|
||
|
|
1283, 1539, 1796, 2021, 258, 517, 776, 1035, 1294, 1552, 1811, 2038, 164, 360,
|
||
|
|
556, 752, 948, 1144, 1308, 1503, 36, 104, 140, 208, 244, 312, 348, 415, 2052,
|
||
|
|
4104, 8204, 10256, 14356, 16408, 18460, 22559, 6148, 14344, 20492, 28688, 34836,
|
||
|
|
43032, 51228, 57375, 8194, 16388, 24582, 32777, 40971, 49165, 57359, 63505
|
||
|
|
};
|
||
|
|
|
||
|
|
/** Adds value (brightness), possibly negative, to given color (represented by
|
||
|
|
its palette index). If you know you'll only be either adding or substracting,
|
||
|
|
use plusValue() or minusValue() functions, which should be faster. */
|
||
|
|
static inline uint8_t palette_addValue(uint8_t color, int8_t add)
|
||
|
|
{
|
||
|
|
uint8_t newValue = color + add;
|
||
|
|
|
||
|
|
if ((newValue >> 3) == (color >> 3))
|
||
|
|
return newValue;
|
||
|
|
else
|
||
|
|
return add > 0 ? (color | 0x07) : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Adds a positive value (brightness) to given color (represented by its
|
||
|
|
palette index). This should be a little bit faster than addValue(). */
|
||
|
|
static inline uint8_t palette_plusValue(uint8_t color, uint8_t plus)
|
||
|
|
{
|
||
|
|
uint8_t newValue = color + plus;
|
||
|
|
return ((newValue >> 3) == (color >> 3)) ? newValue : (color | 0x07);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Substracts a positive value (brightness) from given color (represented by
|
||
|
|
its palette index). This should be a little bit faster than addValue(). */
|
||
|
|
static inline uint8_t palette_minusValue(uint8_t color, uint8_t minus)
|
||
|
|
{
|
||
|
|
uint8_t newValue = color - minus;
|
||
|
|
return ((newValue >> 3) == (color >> 3)) ? newValue : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif //guard
|