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save.c
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save.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* save.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jbondri <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/01/21 21:31:09 by jbondri #+# #+# */
/* Updated: 2021/02/10 13:54:13 by jbondri ### ########.fr */
/* */
/* ************************************************************************** */
#include "minirt.h"
#include <sys/stat.h>
#include <fcntl.h>
void put_unbr_bmp(int i, int fd, int nbr)
{
union u_convert conv;
conv.size = i;
write(fd, conv.s, nbr);
}
void put_nbr_bmp(int i, int fd, int nbr)
{
union u_convert conv;
conv.data = i;
write(fd, conv.c, nbr);
}
void print_data(int fd, int zero)
{
t_vec ray;
t_pixel data;
int i;
int j;
t_vec g;
i = g_rt.r[1] + 1;
while (--i > 0)
{
j = -1;
while (++j < g_rt.r[0])
{
ray = setup(j, i);
colision(ray, &data);
g = gen_p(g_rt.cam->coo, ray, data.res);
if (data.res == -1)
data.color = 10;
else
data.color = get_color_light(g, data.obj);
put_unbr_bmp(data.color, fd, 3);
}
j = -1;
while (++j < zero)
write(fd, "\0", 1);
}
}
void save(void)
{
int fd;
int zero;
g_rt.cam = get_next_cam(g_rt.cam);
fd = open("miniRT.bmp", O_RDWR | O_CREAT, S_IRWXU);
if (fd == -1)
ft_exit("Error 2 : save doesn't work", 2);
write(fd, "BM", 2);
zero = 0;
if ((g_rt.r[0] * 3) % 4 != 0)
zero = 4 - ((g_rt.r[0] * 3) % 4);
put_unbr_bmp(54 + g_rt.r[1] * (g_rt.r[0] * 3 + zero), fd, 4);
put_unbr_bmp(0, fd, 2);
put_unbr_bmp(0, fd, 2);
put_unbr_bmp(54, fd, 4);
put_unbr_bmp(40, fd, 4);
put_nbr_bmp(g_rt.r[0], fd, 4);
put_nbr_bmp(g_rt.r[1], fd, 4);
write(fd, "\x1\0\x18\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24);
write(fd, "\0\0\0\0", 4);
print_data(fd, zero);
close(fd);
ft_lstclear(g_mem_lst, free);
free(g_mem_lst);
exit(0);
}