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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_sort_s_t.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/24 20:22:45 by rbousset #+# #+# */
/* Updated: 2020/03/09 18:56:01 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <cub3d.h>
#include <stdlib.h>
#include <stdint.h>
float
**ft_alloc_dist_tab(void)
{
uint16_t i;
float **dist_tab;
if (!(dist_tab = (float **)malloc((FT_TOTAL_SPRT + 1) * sizeof(float*))))
return (NULL);
i = 0;
while (i < FT_TOTAL_SPRT + 1)
{
if (!(dist_tab[i] = (float *)malloc(4096 * sizeof(float))))
return (NULL);
i++;
}
return (dist_tab);
}
static void
ft_init_st(int32_t *st_o)
{
int8_t i;
i = 0;
while (i < FT_TOTAL_SPRT)
{
st_o[i] = i;
i++;
}
}
static void
ft_swap_them(int16_t i, float **dist_tab)
{
float tmp_i[4096];
ft_memcpy(tmp_i, dist_tab[i], 4096);
ft_memcpy(dist_tab[i], dist_tab[i + 1], 4096);
ft_memcpy(dist_tab[i + 1], tmp_i, 4096);
}
void
ft_sort_s_t(t_cub *cl, float **dist_tab)
{
int16_t i;
int32_t tmp;
i = -1;
ft_init_st(cl->mlist.st_o);
while (++i < FT_TOTAL_SPRT)
{
if (i < FT_TOTAL_SPRT && dist_tab[i][0]
&& dist_tab[i][0] < dist_tab[i + 1][0])
{
tmp = cl->mlist.st_o[i];
cl->mlist.st_o[i] = cl->mlist.st_o[i + 1];
cl->mlist.st_o[i + 1] = tmp;
ft_swap_them(i, dist_tab);
i = -1;
}
}
i = -1;
while (++i < FT_TOTAL_SPRT + 1)
ft_memdel((void*)&dist_tab[i]);
ft_memdel((void*)&dist_tab);
}
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