Sector { public double centroidLatitude() { return 0.5 * (this.minLatitude + this.maxLatitude); } Sector();  Sector(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude);  Sector(Sector sector); static Sector fromDegrees(double latitudeDegrees, double longitudeDegrees,
                                     double deltaLatitudeDegrees, double deltaLongitudeDegrees); static Sector fromRadians(double latitudeRadians, double longitudeRadians,
                                     double deltaLatitudeRadians, double deltaLongitudeRadians); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); boolean isEmpty(); boolean isFullSphere(); double minLatitude(); double maxLatitude(); double minLongitude(); double maxLongitude(); double deltaLatitude(); double deltaLongitude(); double centroidLatitude(); double centroidLongitude(); Location centroid(Location result); Sector set(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude); Sector set(Sector sector); Sector setEmpty(); Sector setFullSphere(); boolean intersects(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude); boolean intersects(Sector sector); boolean intersectsOrNextTo(Sector sector); boolean intersect(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude); boolean intersect(Sector sector); boolean contains(double latitude, double longitude); boolean contains(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude); boolean contains(Sector sector); Sector union(double latitude, double longitude); Sector union(float[] array, int count, int stride); Sector union(double minLatitude, double minLongitude, double deltaLatitude, double deltaLongitude); Sector union(Sector sector); Sector translate(double deltaLatitude, double deltaLongitude);  }
@Test public void testCentroidLatitude() throws Exception { double lat = 34.2; double lon = -119.2; double dLat = 2.0; double dLon = 2.0; Sector sector = Sector.fromDegrees(lat, lon, dLat, dLon); double latitude = sector.centroidLatitude(); assertEquals("centroid latitude", lat + dLat * 0.5, latitude, TOLERANCE); }