inline void ft_resalpha(t_color *c, t_color bg)
{
t_big delta;
if (INVI(*c))
{
*c = bg;
return ;
}
delta = BIG(c->b.a) / 255;
c->b.a = 255;
c->b.r = ft_mix(c->b.r, bg.b.r, delta);
c->b.g = ft_mix(c->b.g, bg.b.g, delta);
c->b.b = ft_mix(c->b.b, bg.b.b, delta);
}
void calculate_m(t_env *e, double x0, double y0)
{
double x;
double y;
double x2;
double y2;
double i;
x = 0.0;
y = 0.0;
x2 = e->xs;
y2 = e->ys;
i = -1.0;
while (++i < e->iter && (x2 + y2) < e->iter)
{
y = 2.0 * x * y + y0;
x = x2 - y2 + x0;
x2 = x * x;
y2 = y * y;
}
if (e->theme < 3)
i = ft_mix(i, i - log2(log2(x2 + y2)), 1.0);
e->color = palette(i, (e->theme > 2 ? e->theme - 3 : e->theme));
pixel_put(e);
}
