utils.c File Reference

#include "fractol.h"
#include <unistd.h>

Include dependency graph for utils.c:

Go to the source code of this file.

Functions
double	ft_atod (const char *str)
	Converts a string to a floating-point number.
int	ft_strcmp (const char *s1, const char *s2)
	Compares two strings.
void	handle_key (mlx_key_data_t keydata, void *param)
	Handles key inputs.
void	handle_scroll (double xdelta, double ydelta, void *param)
	Handles mouse scroll input for zooming.
int	fr_putstr_fd (char *s, int fd)
	Writes a string to a file descriptor and returns.

Function Documentation

fr_putstr_fd()

int fr_putstr_fd	(	char *	s,
		int	fd
	)

Writes a string to a file descriptor and returns.

Writes a string to a file descriptor.

Definition at line 109 of file utils.c.

{
    int i;
    int count;
 
    if (!s)
        return (0);
    i = 0;
    count = 0;
    while (s[i])
        count += write(fd, &s[i++], 1);
    return (count);
}

Here is the caller graph for this function:

ft_atod()

double ft_atod

(

const char *

str

)

Converts a string to a floating-point number.

Converts a string to a double.

Definition at line 19 of file utils.c.

{
    t_atod_data d;
 
    d.result = 0.0;
    d.fraction = 0.0;
    d.divisor = 10.0;
    d.sign = 1;
    d.i = 0;
    while (str[d.i] == 32 || (str[d.i] >= 9 && str[d.i] <= 13))
        d.i++;
    if (str[d.i] == '-' || str[d.i] == '+')
        if (str[d.i++] == '-')
            d.sign = -1;
    while (str[d.i] >= '0' && str[d.i] <= '9')
        d.result = d.result * 10.0 + (str[d.i++] - '0');
    if (str[d.i] == '.')
    {
        d.i++;
        while (str[d.i] >= '0' && str[d.i] <= '9')
        {
            d.fraction += (str[d.i] - '0') / d.divisor;
            d.divisor *= 10.0;
            d.i++;
        }
    }
    return (d.sign * (d.result + d.fraction));
}

Here is the caller graph for this function:

ft_strcmp()

int ft_strcmp	(	const char *	s1,
		const char *	s2
	)

Compares two strings.

Definition at line 51 of file utils.c.

{
    int i;
 
    i = 0;
    while (s1[i] == s2[i] && s1[i])
        i++;
    return (s1[i] - s2[i]);
}

Here is the caller graph for this function:

handle_key()

void handle_key	(	mlx_key_data_t	keydata,
		void *	param
	)

Handles key inputs.

Definition at line 64 of file utils.c.

{
    t_data  *data;
 
    data = (t_data *)param;
    if (keydata.key == MLX_KEY_ESCAPE)
        mlx_close_window(data->mlx);
    else if (keydata.key == MLX_KEY_W)
        data->offset[OFFSET_Y] -= 0.1 / data->zoom;
    else if (keydata.key == MLX_KEY_S)
        data->offset[OFFSET_Y] += 0.1 / data->zoom;
    else if (keydata.key == MLX_KEY_A)
        data->offset[OFFSET_X] -= 0.1 / data->zoom;
    else if (keydata.key == MLX_KEY_D)
        data->offset[OFFSET_X] += 0.1 / data->zoom;
    else if (keydata.key == MLX_KEY_UP)
        data->zoom *= ZOOM_IN;
    else if (keydata.key == MLX_KEY_DOWN)
        data->zoom *= ZOOM_OUT;
    if (data->zoom < 1e-5)
        data->zoom = 1e-5;
    render_fractal(data);
}

Here is the call graph for this function:

Here is the caller graph for this function:

handle_scroll()

void handle_scroll	(	double	xdelta,
		double	ydelta,
		void *	param
	)

Handles mouse scroll input for zooming.

Handles scroll inputs.

Definition at line 91 of file utils.c.

{
    t_data  *data;
 
    (void)xdelta;
    data = (t_data *)param;
    if (ydelta > 0)
        data->zoom *= ZOOM_IN;
    else
        data->zoom *= ZOOM_OUT;
    if (data->zoom < 1e-5)
        data->zoom = 1e-5;
    render_fractal(data);
}

Here is the call graph for this function:

Here is the caller graph for this function: