t_matrix ft_muli_matrix(t_matrix a, t_matrix b)
{
int i;
int j;
int p;
t_matrix m;
i = 0;
j = 0;
p = 0;
m = ft_init_matrix();
while (j < 4)
{
while (i < 4)
{
while (p < 4)
{
m.n[j][i] += a.n[j][p] * b.n[p][i];
p++;
}
p = 0;
i++;
}
i = 0;
j++;
}
return (m);
}
int raytracer(t_obj *obj, t_cam cam)
{
int i;
int j;
t_r r;
double **c2w;
t_save save;
if (!(c2w = ft_init_matrix(&cam.b.vx, &cam.b.vy, &cam.b.vz)))
return (-1);
ft_init_ray(&r);
r.o_w = cam.ro;
j = -1;
while (++j < HEIGHT)
{
i = -1;
while (++i < WIDTH)
{
obj->depth = 0;
ft_find_pixel_pos_on_screen(&cam.rp, i, j);
ft_mult_vect_by_matrix(&r.d_w, c2w, cam.rp);
ft_vect_difference(&r.d_w, r.d_w, r.o_w);
ft_normalize_vect(&r.d_w);
obj->pixel[j][i] = ft_trace(*obj, &r, &save);
}
}
return (0);
}
void ft_apply_all_matrix(t_scene *scn)
{
t_matrix a;
t_matrix b;
t_matrix m;
m = ft_init_matrix();
a = ft_scale_matrix(scn->scale);
if (scn->projection == 1)
scn->rot = ft_get_vector(-1.1, 0.0, 0.80, 1.0);
b = ft_rotation_matrix_z(scn->rot);
m = ft_muli_matrix(b, a);
b = ft_rotation_matrix_y(scn->rot);
m = ft_muli_matrix(b, m);
b = ft_rotation_matrix_x(scn->rot);
m = ft_muli_matrix(b, m);
b = ft_translation_matrix(scn->trans);
m = ft_muli_matrix(b, m);
ft_apply_all_vector(m, scn);
}
