utils.c

/*
 * utils.c
 *
 * metapixel
 *
 * Copyright (C) 1997-2004 Mark Probst
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <stdlib.h>

#include "api.h"

int
utils_manhattan_distance (int x1, int y1, int x2, int y2)
{
    return abs(x1 - x2) + abs(y1 - y2);
}

int
utils_flip_multiplier (unsigned int flips)
{
    int multiplier = 1;

    if (flips & FLIP_HOR)
	multiplier *= 2;
    if (flips & FLIP_VER)
	multiplier *= 2;

    return multiplier;
}