* @return a list of QuadTreeData that are within the given radius from the
* point
*/
public List<QuadTreeData> queryByPointRadius(final DirectPosition2D point,
final double radiusKM) {
LatLonPointRadius pr = new LatLonPointRadius(point, radiusKM);
return queryByPointRadius(point, radiusKM, this.root,
new Rectangle2D.Double(EARTH_MIN_X, EARTH_MIN_Y, EARTH_MAX_X,
EARTH_MAX_Y), pr.getRectangularRegionApproximation(360));
}