Unused utils

src/main/java/eu/simstadt/geo/RegionChooserUtils.java

@@ -3,8 +3,6 @@
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.text.DecimalFormat;
-import java.text.DecimalFormatSymbols;
 import java.util.Optional;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -28,27 +26,6 @@ private RegionChooserUtils() {
 		// only static use
 	}
 
-	/**
-	 * Writes down the input coordinates in a string, without "." or "-". E.g. "N48_77__E9_18" for (48.77, 9.18) and
-	 * "S12_345__W6_789" for (-12.345, -6.789).
-	 * 
-	 * Useful for caching geolocated information. The process should be reversible.
-	 * 
-	 * WARNING: LATITUDE FIRST!
-	 * 
-	 * @param latitude
-	 * @param longitude
-	 * @return Filename friendly string for given coordinates
-	 */
-	public static String coordinatesForFilename(double latitude, double longitude) {
-		DecimalFormatSymbols symbols = DecimalFormatSymbols.getInstance();
-		symbols.setDecimalSeparator('.');
-		DecimalFormat df = new DecimalFormat("+#.######;-#.######", symbols);
-		String lat = df.format(latitude).replace('-', 'S').replace('+', 'N');
-		String lon = df.format(longitude).replace('-', 'W').replace('+', 'E');
-		return (lat + "__" + lon).replace('.', '_');
-	}
-
 	/**
 	 * The srsName (The name by which this reference system is identified) inside the CityGML file can have multiple
 	 * formats. This method tries to parse the string and detect the corresponding reference system. If it is found, it
@@ -149,27 +126,6 @@ public static CoordinateReferenceSystem crsFromCityGMLHeader(Path citygmlPath) t
 		}
 	}
 
-	/**
-	 * The haversine formula determines the great-circle distance between two points on a sphere given their longitudes
-	 * and latitudes. https://en.wikipedia.org/wiki/Haversine_formula
-	 * 
-	 * @param latitude1
-	 * @param longitude1
-	 * @param latitude2
-	 * @param longitude2
-	 * @return distance in kilometer
-	 */
-	public static Double greatCircleDistance(Double latitude1, Double longitude1, Double latitude2, Double longitude2) {
-		final int earthRadius = 6371; // [km]. Radius of the earth
-
-		double latDistance = Math.toRadians(latitude2 - latitude1);
-		double lonDistance = Math.toRadians(longitude2 - longitude1);
-		double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2) + Math.cos(Math.toRadians(latitude1))
-				* Math.cos(Math.toRadians(latitude2)) * Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);
-		double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
-		return earthRadius * c;
-	}
-
 	/**
 	 * Finds every CityGML in every .proj folder in a repository.
 	 *