2211482
/
PR2-travelbuddyapp
0
1
Fork 0
Code Issues 8 Pull Requests Packages Projects Releases Wiki Activity

Changed destination formula to Haversine and multiplied return distance by 1.25 for distance using the streets

distance_method
Selim Eser 2024-06-09 17:54:58 +02:00
parent 39cfdc4d43
commit 523ff6a4a6
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/main/java/de/hs_mannheim/domain/System.java
View File

@ -233,7 +233,14 @@ public class System {
}
} catch (Exception e) {}
return "" + (Math.acos(Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos(lon2 - lon1)) * 111.324) + " km";
double dLat = lat2-lat1;
double dLon = lon2-lon1;
double a = Math.pow(Math.sin(Math.toRadians(dLat/2.0)), 2) + Math.pow(Math.sin(Math.toRadians(dLon/2.0)), 2) * Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2));
double distance = 6378.388 * 2.0 * Math.atan2(Math.sqrt(a), Math.sqrt(1.0-a));
return "" + (distance * 1.25) + " km";
}