blob: 07baf38e03b5bbeaf5fda9053f5cff9362ded432 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* burningship.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/24 16:15:49 by cacharle #+# #+# */
/* Updated: 2020/02/27 12:25:24 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "fractol.h"
#define BURNING_SHIP_ESCAPE_RADIUS_SQUARED 4.0
int burningship(t_state *state, t_complex c)
{
int n;
t_complex z;
t_complex z_square;
double tmp;
(void)state;
z = c;
n = -1;
while (++n < state->iterations)
{
z_square.i = z.i * z.i;
z_square.r = z.r * z.r;
if (z_square.r + z_square.i > BURNING_SHIP_ESCAPE_RADIUS_SQUARED)
break;
tmp = z_square.r - z_square.i + z.r;
z.i = fabs(2.0 * z.r * z.i + c.i);
z.r = fabs(tmp);
}
return (n);
}
|
