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#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;
}
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