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colors.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* colors.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ysingh <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/11/30 21:36:11 by ysingh #+# #+# */
/* Updated: 2022/12/09 18:54:11 by ysingh ### ########.fr */
/* */
/* ************************************************************************** */
#include "fractol.h"
int ft_fractal_color(double n, t_data *data)
{
double hue;
double sat;
double value;
hue = 255 * n / data->max_iter;
sat = 255;
if (n == (double)data->max_iter)
value = 0;
else
value = 255;
hue = (int)((hue / 255.) * 360. + data->hue_off) % 360;
sat /= 255.;
value /= 255.;
return (hsv2rgb((t_hsv){hue, sat, value}));
}
static t_rgb hsv2rgb2(t_hsv hsv, t_pqt pqt)
{
t_rgb rgb;
if (0. <= hsv.h && hsv.h < 1.)
rgb = (t_rgb){.r = hsv.v, .g = pqt.t, .b = pqt.p};
else if (1. <= hsv.h && hsv.h < 2.)
rgb = (t_rgb){.r = pqt.q, .g = hsv.v, .b = pqt.p};
else if (2. <= hsv.h && hsv.h < 3.)
rgb = (t_rgb){.r = pqt.p, .g = hsv.v, .b = pqt.t};
else if (3. <= hsv.h && hsv.h < 4.)
rgb = (t_rgb){.r = pqt.p, .g = pqt.q, .b = hsv.v};
else if (4. <= hsv.h && hsv.h < 5.)
rgb = (t_rgb){.r = pqt.t, .g = pqt.p, .b = hsv.v};
else if (5. <= hsv.h && hsv.h < 6.)
rgb = (t_rgb){.r = hsv.v, .g = pqt.p, .b = pqt.q};
else
rgb = (t_rgb){.r = 0., .g = 0., .b = 0.};
return (rgb);
}
uint32_t hsv2rgb(t_hsv hsv)
{
t_rgb rgb;
t_pqt pqt;
double fract;
if (hsv.h == 360.)
hsv.h = 0.;
else
hsv.h /= 60.;
fract = hsv.h - floor(hsv.h);
pqt = (t_pqt){hsv.v * (1. - hsv.s), hsv.v * (1. - hsv.s * fract), hsv.v
* (1. - hsv.s * (1. - fract))};
rgb = hsv2rgb2(hsv, pqt);
return ((int)(rgb.r * 255) << 24 | (int)(rgb.g * 255) << 16 | (int)(rgb.b
* 255) << 8 | 255);
}
void ft_color_shift(void *param)
{
t_data *data;
data = (t_data *)param;
if (data->rainbow)
{
data->hue_off += 10.;
ft_draw_fractal(data);
}
}