/**
* Add node to samples.
*
* @param node node to add to samples
* @param resultSet set of resulting nodes
* @return set of n nodes
*/
protected SortedVector addNode(Node node, SortedVector resultSet) {
resultSet.add(new NodeDistance(node, point.distance(node)));
while (resultSet.size() > n) resultSet.remove(resultSet.size() - 1);
return resultSet;
}
