char *ft_itoa(int i)
{
char *s;
int j;
int temp;
int len;
if (i == -2147483648)
return ("-2147483648");
j = 0;
len = ft_intlen(i);
s = (char*)malloc(sizeof(char) * len);
if (i < 0)
{
s[j++] = '-';
i = i * -1;
len--;
}
while (len - 1)
{
temp = i / ft_pow(10, len - 2);
s[j++] = temp + 48;
i = i - temp * ft_pow(10, len - 2);
len--;
}
s[j] = '\0';
return (s);
}
static int ft_baseconvert(char *str)
{
int i;
int j;
int color;
i = 0;
j = 5;
color = 0;
while (str[i++])
str[i - 1] = ft_tolower(str[i - 1]);
i = 0;
if (str[0] == '0' && str[1] == 'x')
i = 2;
while (j >= 0)
{
if (str[i] && str[i] >= 'a' && str[i] <= 'f')
color += (int)((str[i] - 87) * ft_pow(16, j));
else if (str[i] && str[i] >= 'A' && str[i] <= 'F')
color += (int)((str[i] - 55) * ft_pow(16, j));
else if (str[i] && str[i] >= '0' && str[i] <= '9')
color += (int)((str[i] - 48) * ft_pow(16, j));
if (str[i])
i++;
j--;
}
return (color);
}
static float get_result(int size_int, int size_float, char *equ)
{
int i;
int j;
float result;
float result_float;
float tmp;
result = 0;
result_float = 0;
i = -1;
j = 1;
while (++i < size_int)
result = ((equ[i] - '0') * ft_pow(10, size_int - 1 - i)) + result;
if (size_float > 0)
{
while (++i <= size_int + size_float)
{
tmp = ((1 / (float)ft_pow(10, j)) * (equ[i] - '0'));
result_float = tmp + result_float;
j++;
}
}
result = result + result_float;
return (result);
}
void ft_deltamin2(double d, double r, double **nums)
{
r = (-nums[1][0]) / (2 * nums[2][0]);
if (r == 0)
r = 0;
printf("delta < 0\n");
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("root(%g - 4 *", ft_pow(nums[1][0], 2));
printf(" (%g * %g))) / (2 * %g)\n", nums[0][0], nums[2][0], nums[2][0]);
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("root(%g -", ft_pow(nums[1][0], 2));
printf(" %g)) / %g\n", 4 * nums[0][0] * nums[2][0], 2 * nums[2][0]);
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("%gi)", ft_root(-d));
printf(" / %g\n", 2 * nums[2][0]);
printf("Result 1 : %g - %gi\n", r, (ft_root(-d)) / (2 * nums[2][0]));
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("root(%g - 4 *", ft_pow(nums[1][0], 2));
printf(" (%g * %g))) / (2 * %g)\n", nums[0][0], nums[2][0], nums[2][0]);
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("root(%g -", ft_pow(nums[1][0], 2));
printf(" %g)) / %g\n", 4 * nums[0][0] * nums[2][0], 2 * nums[2][0]);
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("%gi)", ft_root(-d));
printf(" / %g\n", 2 * nums[2][0]);
printf("Result 2 : %g + %gi\n", r, (ft_root(-d)) / (2 * nums[2][0]));
}
t_real collision_test_sphere_c(t_ray *ray, t_sphere *sphere)
{
return (ft_pow(ray->origin.x - sphere->position.x, 2)
+ ft_pow(ray->origin.y - sphere->position.y, 2)
+ ft_pow(ray->origin.z - sphere->position.z, 2)
- ft_pow(sphere->radius, 2));
}
void ft_putnbr(int n)
{
int save;
size_t len;
save = n;
len = 0;
if (!n)
ft_putchar('0');
if (n < 0)
{
ft_putchar('-');
n = -n;
}
while (save)
{
save /= 10;
len++;
}
while (len)
{
ft_putchar(n / ft_pow(10, (int)len - 1) + '0');
n -= n / ft_pow(10, (int)len - 1) * ft_pow(10, (int)len - 1);
len--;
}
}
static void ft_print_fd(int taille, int c, int fd)
{
while (taille >= 0)
{
ft_putchar_fd((char)(c / (ft_pow(10, taille)) + (int)'0'), fd);
c %= ft_pow(10, taille);
taille--;
}
}
int ft_strisint(char *str)
{
int i;
int sign;
int len;
int nb;
sign = 1;
if (*str == '+' || *str == '-')
str += (*str == '+') ? sign : -(sign *= -1);
len = ft_strlen(str);
i = len;
while (--i >= 0)
{
if (!ft_isdigit(str[i]))
return (0);
}
if (len != 10)
return (len < 10);
while (++i < len)
{
nb = (i == len - 1 && sign == -1)
? 8 : (2147483647 / ft_pow(10, len - i - 1)) % 10;
if (str[i] != nb + '0')
return (str[i] < nb + '0');
}
return (1);
}
int collision_test_sphere(t_ray_result *r,
t_sphere *sphere)
{
t_real a;
t_real b;
t_real c;
t_real det;
a = collision_test_sphere_a(&r->ray.direction);
b = collision_test_sphere_b(&r->ray, &sphere->position);
c = collision_test_sphere_c(&r->ray, sphere);
det = ft_pow(b, 2) - (4 * a * c);
if (!det)
r->distance = -(b / 2 * a);
else if (det > 0)
r->distance = FT_MIN((-b - sqrt(det)) / (2 * a),
(-b + sqrt(det)) / (2 * a));
else
return (0);
r->hit = OT_SPHERE;
r->contact.point = vec3_add(r->ray.origin,
vec3_scale(r->ray.direction, r->distance));
return (1);
}
double ft_disc(double a, double b, double c)
{
double delta;
delta = ft_pow(b, 2) - (4 * a * c);
return (delta);
}
char *ft_itoa_base(int value, int base)
{
char *res;
int i;
i = 1;
if (base <= 1 || base > 16)
return (NULL);
if (base == 10 || value == 0)
return (ft_itoa(value));
value = value < 0 ? -value : value;
while (ft_pow(base, i) - 1 < (long int)value)
i++;
if (!(res = malloc(sizeof(res) * (i + 1))))
return (NULL);
res[i] = '\0';
i--;
while (value)
{
if (value % base >= 10)
res[i] = 'A' + (value % base - 10);
else
res[i] = '0' + value % base;
value /= base;
i--;
}
return (res);
}
int ft_atoi(const char *str)
{
long long result;
int neg;
size_t size;
char *s;
neg = 1;
result = 0;
s = skip_white_space(str);
if (!s)
return (0);
if (*s == '+')
s++;
else if (*s == '-')
{
s++;
neg = -1;
}
s = skip_nul(s);
size = get_size(s);
while (ft_isdigit((int)*s))
{
result += (*s - '0') * ft_pow(10, size-- - 1);
s++;
}
return (result * neg);
}
static int ft_pow(int nb, int pow)
{
if (pow == 0)
return (1);
else
return (nb * ft_pow(nb, pow - 1));
}
char *printf_ho(unsigned short int nb, t_args args)
{
char *res;
int i;
const char hexa[] = "0123456789abcdef";
i = 1;
if (!nb && args.precision == 0 && !(ft_strchr(args.option, '#')))
return (ft_strdup("\0"));
while (ft_pow(8, i) - 1 < nb)
i++;
i = (args.precision > i) ? args.precision : i;
if (ft_strchr(args.option, '#') && nb)
i++;
if (!(res = ft_strnew(i--)))
return (NULL);
res[i] = (!nb) ? '0' : res[i];
while (nb)
{
res[i--] = hexa[nb % 8];
nb /= 8;
}
if (ft_strchr(args.option, '#') && i >= 0)
res[i--] = '0';
while (i >= 0)
res[i--] = '0';
return (res);
}
long int ft_strtol(char *line)
{
long int rslt;
long int *hexa;
int cmp;
int power;
cmp = 0;
power = 0;
rslt = 0;
hexa = (long int*)malloc(sizeof(long int) * ft_strlen(line));
while (line[cmp])
{
if (line[cmp] >= 'A' && line[cmp] <= 'F')
hexa[cmp] = line[cmp] + 10 - 'A';
else if (line[cmp] >= '0' && line[cmp] <= '9')
hexa[cmp] = line[cmp] - '0';
cmp++;
}
while (--cmp >= 0)
{
rslt += hexa[cmp] * ft_pow(16, power);
power++;
}
free(hexa);
return (rslt);
}
char *ft_itoa(int n)
{
char *str;
long nb;
int i;
int j;
int k;
nb = (long)n;
j = 0;
i = ft_splitting(nb, 0);
str = (char *)malloc(sizeof(char) * i + 1);
if (nb < 0)
{
str[j++] = '-';
nb = -nb;
}
while (i >= 0)
{
k = ft_pow(i, 1);
str[j] = nb / k + '0';
j++;
nb = nb % k;
i--;
}
str[j] = '\0';
return (str);
}
void get_flag(char *str, t_data *data)
{
int i;
char *flag;
flag = "#0-+ ";
i = -1;
data->len_for = ft_strlen(str) + 1;
while (ft_strpos(flag, str[++i]) > -1 && str[i])
data->flag = data->flag | ft_pow(2, ft_strpos(flag, str[i]));
if (ft_isdigit(str[i]))
data->field = ft_atoi(str + i);
while (ft_isdigit(str[i]))
i++;
if (str[i] == '.')
{
i++;
data->prec = ft_atoi(str + i);
}
while (ft_isdigit(str[i]))
i++;
data->len_mod = get_len_mod(str + i);
if ((data->flag & 2) > 0 && (data->flag & 4) > 0)
data->flag = data->flag - 2;
if ((data->flag & 8) > 0 && (data->flag & 16) > 0)
data->flag = data->flag - 16;
}
void ft_puthex(long long int nb, int width)
{
char val[width + 1];
int i;
long long int tmp;
i = width;
while (--i >= 0)
{
tmp = nb / ft_pow(16, i);
nb -= tmp * ft_pow(16, i);
tmp = (tmp < 10 ? tmp + '0' : tmp - 10 + 'a');
val[width - (i + 1)] = tmp;
}
val[width] = '\0';
ft_putstr(val);
}
unsigned long ft_pow
(unsigned long a, unsigned long n)
{
if (n == 0)
return (1);
else
return (a * ft_pow(a, n - 1));
}
int ft_pow(int nb, int pow)
{
if (pow > 1)
return (nb * ft_pow(nb, pow - 1));
if (pow <= 0)
return (1);
return (nb);
}
t_counter ft_counterpow(t_counter cnt, int val, char c)
{
cnt.value = ft_pow(cnt.value, val);
cnt.ope = c;
cnt.nbo = cnt.nbo + 1;
cnt.num = cnt.num;
return (cnt);
}
int ft_pow(int nb, int power)
{
if (power == 0)
return (1);
if (power == 1)
return (nb);
return (nb * ft_pow(nb, power - 1));
}
int ft_pow(int nb, int ex)
{
if (ex == 0)
return (1);
else if (ex < 0)
return (0);
return (nb * ft_pow(nb, ex - 1));
}
static unsigned int ft_pow(unsigned int nb)
{
if (nb == 0)
return (1);
else if (nb == 1)
return (10);
else
return (ft_pow(nb - 1) * 10);
}
static int ft_pow(int i, int nb)
{
while (i > 0)
{
nb = nb * 10;
i--;
ft_pow(i, nb);
}
return (nb);
}
static int ft_addnumber(const char *nptr, int i, unsigned int len)
{
int j;
unsigned int cpt;
j = 0;
cpt = 0;
while (cpt < len)
{
j = j + (nptr[i + len - cpt - 1] - 48) * ft_pow(cpt);
cpt++;
}
return (j);
}
void ft_deltasup2(double d, double **nums)
{
printf("delta > 0\n");
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("root(%g - 4 *", ft_pow(nums[1][0], 2));
printf(" (%g * %g))) / (2 * %g)\n", nums[0][0], nums[2][0], nums[2][0]);
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("root(%g -", ft_pow(nums[1][0], 2));
printf(" %g)) / %g\n", 4 * nums[0][0] * nums[2][0], 2 * nums[2][0]);
printf("(-b - root(b^2 - 4ac)) / 2a = (%g - ", -nums[1][0]);
printf("%g)", ft_root(d));
printf(" / %g\n", 2 * nums[2][0]);
printf("Result 1 : %g\n", (-nums[1][0] - ft_root(d)) / (2 * nums[2][0]));
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("root(%g - 4 *", ft_pow(nums[1][0], 2));
printf(" (%g * %g))) / (2 * %g)\n", nums[0][0], nums[2][0], nums[2][0]);
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("root(%g -", ft_pow(nums[1][0], 2));
printf(" %g)) / %g\n", 4 * nums[0][0] * nums[2][0], 2 * nums[2][0]);
printf("(-b + root(b^2 - 4ac)) / 2a = (%g + ", -nums[1][0]);
printf("%g)", ft_root(d));
printf(" / %g\n", 2 * nums[2][0]);
printf("Result 2 : %g\n", (-nums[1][0] + ft_root(d)) / (2 * nums[2][0]));
}
void ft_solve2(double **nums)
{
double d;
double r;
r = 0;
d = ft_pow(nums[1][0], 2) - (4 * nums[0][0] * nums[2][0]);
if (d < 0)
ft_deltamin2(d, r, nums);
else if (d == 0)
ft_deltaequal2(nums);
else
ft_deltasup2(d, nums);
return ;
}
static void ft_dtoa_dot(char *buffer, double nb,
unsigned int precision, const char *map)
{
long x;
if (!precision)
return ;
*(buffer++) = '.';
nb -= (double)((__int128)nb);
x = (long)(nb * ft_pow(10, (int)precision));
while (precision--)
{
buffer[precision] = map[x % 10];
x /= 10;
}
}
static char *ft_init_itoa(unsigned int nb, unsigned int base,
unsigned int *pow, int signe)
{
char *ret;
*pow = 1;
while (nb >= base)
{
nb /= base;
(*pow)++;
}
if (!(ret = ft_strnew(*pow + (signe == -1))))
return (NULL);
*pow = ft_pow(base, *pow - 1);
return (ret);
}