diff options
Diffstat (limited to 'helper.c')
| -rw-r--r-- | helper.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/helper.c b/helper.c deleted file mode 100644 index 3e02182..0000000 --- a/helper.c +++ /dev/null @@ -1,48 +0,0 @@ -#include <math.h> -#include "header.h" - -#define MAX(x, y) ((x) > (y) ? (x) : (y)) -#define MIN(x, y) ((x) < (y) ? (x) : (y)) -#define MIN3(x, y, z) (MIN(x, MIN(y, z))) - -double map_range(double x, double src_lo, double src_hi, double dest_lo, double dest_hi) -{ - double src_len = src_hi - src_lo; - double dest_len = dest_hi - dest_lo; - return (x - src_lo) / src_len * dest_len + dest_lo; -} - -Color helper_HSL_to_RGB(int hue, double saturation, double lightness) -{ - /* double chroma = (1 - fabs(2 * lightness - 1)) * saturation; */ - /* int hue_p = hue / 60; */ - /* double x = chroma * (1 - abs(hue_p % 2 - 1)); */ - Color color; - - /* if (hue == 0) */ - /* { */ - /* color.hexcode = 0x000000; */ - /* return color; */ - /* } */ - /* */ - /* if (hue_p */ - - double a = saturation * MIN(lightness, 1 - lightness); - int kn0 = (0 + hue / 30) % 12; - int kn8 = (8 + hue / 30) % 12; - int kn4 = (4 + hue / 30) % 12; - Byte f0 = lightness - a * MAX(MIN3(kn0 - 3, 9 - kn0, 1), -1); - Byte f8 = lightness - a * MAX(MIN3(kn8 - 3, 9 - kn8, 1), -1); - Byte f4 = lightness - a * MAX(MIN3(kn4 - 3, 9 - kn4, 1), -1); - - color.rgb.r = f0; - color.rgb.g = f8; - color.rgb.b = f4; - - return color; -} - -double double_rand(void) -{ - return (double)rand() / RAND_MAX; -} |
