Java Distance Calculate calculateDistance(Double prevLat, Double prevLon, Double currentLat, Double currentLon)

Description

Calculated the distance between 2 points and returns the distance in meters

License

Open Source License

Parameter

Parameter	Description
prevLat	a parameter
prevLon	a parameter
currentLat	a parameter
currentLon	a parameter

Return

distance

Declaration

public static Double calculateDistance(Double prevLat, Double prevLon, Double currentLat, Double currentLon) 

Method Source Code

//package com.java2s;
/*/* w  w w  . j a  v a 2 s.  c  o  m*/
?Developed with the contribution of the European Commission - Directorate General for Maritime Affairs and Fisheries
? European Union, 2015-2016.
    
This file is part of the Integrated Fisheries Data Management (IFDM) Suite. The IFDM Suite 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 any later version. The IFDM Suite 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 the IFDM Suite. If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    private static int EARTH_RADIUS_METER = 6371000;

    /**
     *
     * Calculated the distance between 2 points and returns the distance in
     * meters
     *
     * @param prevLat
     * @param prevLon
     * @param currentLat
     * @param currentLon
     * @return distance
     */
    public static Double calculateDistance(Double prevLat, Double prevLon, Double currentLat, Double currentLon) {
        return distanceMeter(prevLat, prevLon, currentLat, currentLon);
    }

    /**
     * Calculate the distance between two points (Latitude, Longitude)
     */
    private static double distanceMeter(double prevLat, double prevLon, double currentLat, double currentLon) {
        double lat1Rad = Math.toRadians(prevLat);
        double lat2Rad = Math.toRadians(currentLat);
        double deltaLonRad = Math.toRadians(currentLon - prevLon);

        return Math.acos(Math.sin(lat1Rad) * Math.sin(lat2Rad)
                + Math.cos(lat1Rad) * Math.cos(lat2Rad) * Math.cos(deltaLonRad)) * EARTH_RADIUS_METER;
    }
}

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