/* * The JTS Topology Suite is a collection of Java classes that * implement the fundamental operations required to validate a given * geo-spatial data set to a known topological specification. * * Copyright (C) 2001 Vivid Solutions * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * For more information, contact: * * Vivid Solutions * Suite #1A * 2328 Government Street * Victoria BC V8T 5G5 * Canada * * (250)385-6040 * www.vividsolutions.com */ package com.vividsolutions.jts.index.strtree; import com.vividsolutions.jts.geom.Geometry; /** * An ItemDistance function for * items which are {@link Geometry}s, * using the {@link Geometry#distance(Geometry)} method. * * @author Martin Davis * */ public class GeometryItemDistance implements ItemDistance { /** * Computes the distance between two {@link Geometry} items, * using the {@link Geometry#distance(Geometry)} method. * * @param item1 an item which is a Geometry * @param item2 an item which is a Geometry * @return the distance between the geometries * @throws ClassCastException if either item is not a Geometry */ public double distance(ItemBoundable item1, ItemBoundable item2) { Geometry g1 = (Geometry) item1.getItem(); Geometry g2 = (Geometry) item2.getItem(); return g1.distance(g2); } }