read the point rotate

fdf.c

@@ -14,68 +14,177 @@
 
 
 //# include "MLX42.h"
+#define WRONG_LINE_LENGTH "Error: wrong line length. Expected %d, got %d\n"
+#define MALLOC_ERROR "Error: malloc failed\n"
+#define FILE_ERROR "Error: could not open file %s\n"
+#define USAGE_ERROR "Usage: %s <filename>\n"
+
+void	rotate_x(t_point **points, double angle, int size)
+{
+	int	i;
+	int	previous_y;
+
+	i = 0;
+	while (i < size)
+	{
+		previous_y = (*points)[i].y;
+		(*points)[i].y = previous_y * cos(angle) + (*points)[i].z * sin(angle);
+		(*points)[i].z = -previous_y * sin(angle) + (*points)[i].z * cos(angle);
+		i++;
+	}
+}
+void	rotate_y(t_point **points, double angle, int size)
+{
+	int	i;
+	int	previous_x;
+
+	i = 0;
+	while (i < size)
+	{
+		previous_x = (*points)[i].x;
+		(*points)[i].x = previous_x * cos(angle) + (*points)[i].z * sin(angle);
+		(*points)[i].z = -previous_x * sin(angle) + (*points)[i].z * cos(angle);
+		i++;
+	}
+}
+void	rotate_z(t_point **points, double angle, int size)
+{
+	int	i;
+	int	previous_x;
+	int	previous_y;
+
+	i = 0;
+	while (i < size)
+	{
+		previous_x = (*points)[i].x;
+		previous_y = (*points)[i].y;
+		(*points)[i].x = previous_x * cos(angle) - previous_y * sin(angle);
+		(*points)[i].y = previous_x * sin(angle) + previous_y * cos(angle);
+		i++;
+	}
+}
+
 
 
 int	get_map_sizes(char *filename, t_map *map)
 {
-	int		fd;
+	const int	fd = open(filename, O_RDONLY);
 	char		*line;
 	int			width;
-	int		height;
 
-	fd = open(filename, O_RDONLY);
 	if (fd < 0)
-	{
-		ft_printf("Error: could not open file %s\n", filename);
-		return (0);
-	}
+		return (ft_printf(FILE_ERROR, filename), 0);
 	width = 0;
-	height = 0;
 	while (true)
 	{
 		line = get_next_line(fd);
 		if (!line)
 			break ;
 		width = ft_count_words(line, ' ');
-		height++;
 		free(line);
-	}
-	close(fd);
+		if (map->width != 0 && map->width != width)
+			return (ft_printf(WRONG_LINE_LENGTH, map->width, width), 0);
+		else if (map->width == 0)
 			map->width = width;
-	map->height = height;
-	return (1);
+		map->height++;
+	}
+	return (close(fd), 1);
+}
+
+void	free_line_and_split(char **line, char ***split)
+{
+	char	**split_start;
+
+	split_start = *split;
+	free(*line);
+	*line = NULL;
+	while (**split)
+	{
+		free(**split);
+		**split = NULL;
+		(*split)++;
+	}
+	free(split_start);
+	*split = NULL;
 }
 
 int	read_map(char *filename, t_map *map)
 {
 	int		fd;
 	char	*line;
+	int		y;
+	int		x;
+	char	**split;
+
 
-	get_map_sizes(filename, map);
 	fd = open(filename, O_RDONLY);
 	if (fd < 0)
-	{
-		ft_printf("Error: could not open file %s\n", filename);
-		return (0);
-	}
+		return (ft_printf(FILE_ERROR, filename), 0);
+	y = map->height - 1;
 	while (true)
 	{
-		ft_printf("%s\n", line);
-		free(line);
+		x = 0;
 		line = get_next_line(fd);
+		if (!line)
+			break ;
+		split = ft_split(line, ' ');
+		while (split[x])
+		{
+			map->points[y * map->width + x].x = x - map->width / 2;
+			map->points[y * map->width + x].y = map->height / 2 - y;
+			map->points[y * map->width + x].z = ft_atoi(split[x]);
+			x++;
+		}
+		free_line_and_split(&line, &split);
+		y--;
 	}
 	close(fd);
 	return (1);
 }
 
+void print_map(t_map *map)
+{
+	int x;
+	int y;
+
+	y = 0;
+	while (y < map->height)
+	{
+		x = 0;
+		while (x < map->width)
+		{
+			printf("(%.2f, %.2f, %.2f)\n",
+				map->points[y * map->width + x].x,
+				map->points[y * map->width + x].y,
+				map->points[y * map->width + x].z);
+			x++;
+		}
+		ft_printf("\n");
+		y++;
+	}
+}
+
 int	main(int argc, char *argv[])
 {
+	t_map	*map;
+
 	if (argc != 2)
 	{
-		ft_printf("Usage: %s <filename>\n", argv[0]);
+		ft_printf(USAGE_ERROR, argv[0]);
 		return (EXIT_FAILURE);
 	}
-	if(!read_map(argv[1]))
+	map = malloc(sizeof(t_map));
+	if (!map)
+		return (ft_printf(MALLOC_ERROR), EXIT_FAILURE);
+	get_map_sizes(argv[1], map);
+	map->points = malloc(map->width * map->height * sizeof(t_point));
+	if (!map->points)
+		return (ft_printf(MALLOC_ERROR), EXIT_FAILURE);
+	if (!read_map(argv[1], map))
 		return (EXIT_FAILURE);
+	print_map(map);
+	rotate_x(&map->points, M_PI / 4, map->width * map->height);
+	rotate_z(&map->points, M_PI / 4, map->width * map->height);
+	print_map(map);
 	return (EXIT_SUCCESS);
 }

inc/fdf.h

@@ -12,17 +12,20 @@
 
 #ifndef FDF_H
 # define FDF_H
+
 # include "libft.h"
 # include <stdlib.h>
 # include <unistd.h>
 # include <fcntl.h>
 # include <stdbool.h>
+# include <math.h>
+# include <stdio.h>
 
 typedef struct	s_point
 {
-	int			x;
-	int			y;
-	int			z;
+	float			x;
+	float			y;
+	float			z;
 }				t_point;
 
 typedef struct	s_map
@@ -30,6 +33,7 @@ typedef struct	s_map
 	t_point		*points;
 	int			width;
 	int			height;
+	int			z_max;
 }				t_map;