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init.c
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init.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* init.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mcaseaux <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/05/21 17:43:35 by mcaseaux #+# #+# */
/* Updated: 2018/05/21 17:43:36 by mcaseaux ### ########.fr */
/* */
/* ************************************************************************** */
#include "fdf.h"
int vabs(int nbr)
{
return (nbr > 0 ? nbr : -nbr);
}
static double get_coef(int **z_tab, t_filespec *fspc)
{
int altmax;
int i;
int j;
double coef;
i = 0;
altmax = vabs(z_tab[0][0]);
while (i < fspc->nbln)
{
j = 0;
while (j < fspc->nbcarmax)
{
if (vabs(z_tab[i][j]) > altmax)
altmax = vabs(z_tab[i][j]);
j++;
}
i++;
}
if (altmax == 0)
return (100);
coef = 100.0 / (double)altmax;
return (coef);
}
t_dot **ft_fusion(t_dot **grid, int **z_tab, t_filespec *fspc)
{
int i;
int j;
double coef;
i = 0;
coef = get_coef(z_tab, fspc);
while (i < fspc->nbln)
{
j = 0;
while (j < fspc->nbcarmax)
{
grid[i][j].y -= (coef / 2) * z_tab[i][j];
grid[i][j].x -= (z_tab[i][j] = coef * z_tab[i][j]);
j++;
}
i++;
}
return (grid);
}
static t_dot **ft_assign_point(t_dot **grid, int i, int j, t_filespec *fspc)
{
if (fspc->nbcarmax > 1)
grid[i][j].x = (j * (1024 - 150)) / (fspc->nbcarmax / 2) + 150;
else
grid[i][j].x = (j * (1024 - 150)) / (fspc->nbcarmax) + 150;
if (fspc->nbln > 1)
grid[i][j].y = (i * (576 - 75)) / (fspc->nbln / 2) + 75;
else
grid[i][j].y = (i * (576 - 75)) / (fspc->nbln) + 75;
return (grid);
}
t_dot **ft_create_grid(t_filespec *fspc)
{
t_dot **grid;
int i;
int j;
if (!(grid = (t_dot **)malloc(sizeof(t_dot *) * fspc->nbln)))
return (0);
i = 0;
while (i < fspc->nbln)
{
if (!(grid[i] = (t_dot *)malloc(sizeof(t_dot) * fspc->nbcarmax)))
return (0);
i++;
}
i = 0;
while (i < fspc->nbln)
{
j = 0;
while (j < fspc->nbcarmax)
{
ft_assign_point(grid, i, j, fspc);
j++;
}
i++;
}
return (grid);
}