root/tools/routingservice/trunk/src/jp/co/orkney/restlet/util/LimitsHelper.java

package jp.co.orkney.restlet.util;

/**
 * Copyright (c) 2008 Orkney, Inc. <http://www.orkney.co.jp/>
 * 
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

public class LimitsHelper
{
    public static boolean isDistanceAllowed(Point startPoint, Point endPoint,
            double distance)
    {
        double a = startPoint.getX().doubleValue()
                - endPoint.getX().doubleValue();
        double b = startPoint.getY().doubleValue()
                - endPoint.getY().doubleValue();

        return Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2)) < distance;
    }

    public static boolean isAreaAllowed(Point startPoint, Point endPoint,
            Point llCorner, Point urCorner)
    {
        double llX = llCorner.getX().doubleValue();
        double llY = llCorner.getY().doubleValue();
        double urX = urCorner.getX().doubleValue();
        double urY = urCorner.getY().doubleValue();

        double startX = startPoint.getX().doubleValue();
        double startY = startPoint.getY().doubleValue();
        double endX = endPoint.getX().doubleValue();
        double endY = endPoint.getY().doubleValue();

        return (Math.min(startX, endX) >= llX)
                && (Math.min(startY, endY) >= llY)
                && (Math.max(startX, endX) <= urX)
                && (Math.max(startY, endY) >= urY);
    }
}