#define LINEAR	0
#define	ALBER	1

GList *map_strings;
char *curmap;
GdkPixmap *pixmap;

void set_map_from_file(char *map_file);
void expose_event();
void scan_maps_file();
void get_map_boundaries(char *map_name);
void compute_lat_lon_parameters();
float get_lat (int x,int y);
float get_lon (int x,int y);
int lat_lon_to_x (float lat,float lon);
int lat_lon_to_y (float lat,float lon);
int lat_lon_to_x_y (float lat,float lon,int which);
char *point_to_lat_lon (int x,int y);
char *format_lat_lon (float lat,float lon);