package com.vividsolutions.jts.index.strtree; /** * A function method which computes the distance * between two {@link ItemBoundable}s in an {@link STRtree}. * Used for Nearest Neighbour searches. * * @author Martin Davis * */ public interface ItemDistance { /** * Computes the distance between two items. * * @param item1 * @param item2 * @return the distance between the items * * @throws IllegalArgumentException if the metric is not applicable to the arguments */ double distance(ItemBoundable item1, ItemBoundable item2); }