#ifndef ARRAY_H
#define ARRAY_H

#include <limits.h>


#define	UNDEF	INT_MAX


struct array {
	int min_x, max_x;
	int min_y, max_y;
	int min_z, max_z;
	int *data;	/* NULL if there are no points */
};


struct array *new_array(void);
void free_array(struct array *a);

void set(struct array *a, int x, int y, int z);


static inline int get(const struct array *a, int x, int y)
{
	return a->data[(x)-a->min_x+(a->max_x-a->min_x+1)*((y)-a->min_y)];
}

#endif /* ARRAY_H */