adressevedligehold/afstandandenrute/GeoPointHelper.java

package dk.daoas.adressevedligehold.afstandandenrute;

import dk.daoas.adressevedligehold.beans.Address;


public class GeoPointHelper {


        /* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
        /* :: This function converts decimal degrees to radians : */
        /* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
        private static double deg2rad(double deg) {
                return deg * Math.PI / 180.0;
        }

        /* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
        /* :: This function converts radians to decimal degrees : */
        /* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
        private static double rad2deg(double rad) {
                return rad * 180 / Math.PI;
        }

        // http://www.geodatasource.com/developers/java
        private static double distanceHaversine(double lat1, double lon1,
                        double lat2, double lon2) {
                double theta = lon1 - lon2;
                double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2))
                                + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2))
                                * Math.cos(deg2rad(theta));
                dist = Math.acos(dist);
                dist = rad2deg(dist);
                dist = dist * 60 * 1.1515;

                // indtil nu er dist i miles - så vi omregner lige til km
                dist = dist * 1.609344;
                return dist;
        }

        public static double beregnAfstand(Address p1, Address p2) {
                if (p1.latitude == p2.latitude && p1.longitude == p2.longitude) {
                        return 0.00; //Haversine går i baglås hvis p1 og p2 er samme position
                }
                
                
                return distanceHaversine(p1.latitude, p1.longitude, p2.latitude, p2.longitude);
        }
        
}
1	torben	2878	package dk.daoas.adressevedligehold.afstandandenrute;
2
3			import dk.daoas.adressevedligehold.beans.Address;
4
5
6
7			public class GeoPointHelper {
8
9
10			/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
11			/* :: This function converts decimal degrees to radians : */
12			/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
13			private static double deg2rad(double deg) {
14	torben	2937	return deg * Math.PI / 180.0;
15	torben	2878	}
16
17			/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
18			/* :: This function converts radians to decimal degrees : */
19			/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
20			private static double rad2deg(double rad) {
21	torben	2937	return rad * 180 / Math.PI;
22	torben	2878	}
23
24			// http://www.geodatasource.com/developers/java
25			private static double distanceHaversine(double lat1, double lon1,
26			double lat2, double lon2) {
27			double theta = lon1 - lon2;
28			double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2))
29			+ Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2))
30			* Math.cos(deg2rad(theta));
31			dist = Math.acos(dist);
32			dist = rad2deg(dist);
33			dist = dist * 60 * 1.1515;
34
35			// indtil nu er dist i miles - så vi omregner lige til km
36			dist = dist * 1.609344;
37	torben	2941	return dist;
38	torben	2878	}
39
40			public static double beregnAfstand(Address p1, Address p2) {
41			if (p1.latitude == p2.latitude && p1.longitude == p2.longitude) {
42			return 0.00; //Haversine går i baglås hvis p1 og p2 er samme position
43			}
44
45
46			return distanceHaversine(p1.latitude, p1.longitude, p2.latitude, p2.longitude);
47			}
48
49			}