// **********************************************************************// // <copyright>// //  BBN Technologies//  10 Moulton Street//  Cambridge, MA 02138//  (617) 873-8000// //  Copyright (C) BBNT Solutions LLC. All rights reserved.// // </copyright>// **********************************************************************// // $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/layer/vpf/TileDirectory.java,v $// $RCSfile: TileDirectory.java,v $// $Revision: 1.2.2.1 $// $Date: 2004/10/14 18:27:22 $// $Author: dietrick $// // **********************************************************************package com.bbn.openmap.layer.vpf;/** * This class maps latitudes and longitudes to a particular tile * directory. */public class TileDirectory {    /** the name of the subdirectory */    final private String tilename;    /** the boundaries */    final private float westlon, southlat, eastlon, northlat;    /** the tile ID of this object */    final private int tileID;    /**     * Construct a TileDirectory with a path and boundaries.     *      * @param path the directory path     * @param n the northern boundary     * @param s the southern boundary     * @param e the eastern boundary     * @param w the western boundary     * @param tileID our tile identifier     */    public TileDirectory(String path, int tileID, float n, float s, float e,            float w) {        StringBuffer strbuf = new StringBuffer(path.toLowerCase());        //      strbuf.append(File.separator);        strbuf.append("/"); // in Java land with the BinaryFile.        tilename = strbuf.toString().intern();        this.tileID = tileID;        if (e < w) {            e += 360.0;        }        westlon = w;        eastlon = e;        northlat = n;        southlat = s;    }    /**     * Contruct an untiled TileDirectory. Since this object does not     * have valid boundaries, it is an error to call inRegion on it     *      * @see #inRegion(float, float, float, float)     */    public TileDirectory() {        tilename = "";        this.tileID = -1;        westlon = eastlon = northlat = southlat = Float.NaN;    }    /**     * Return the path for this tile     *      * @return a string path     */    public String getPath() {        return tilename;    }    /**     * Return the tile identifier for this tile     *      * @return the tile id (-1 for untiled coverage)     */    public int getTileID() {        return tileID;    }    /**     * Return a string describing ourselves     *      * @return a string usable as a directory path component     */    public String toString() {        return (tilename);    }    /**     * Figure out if our region overlaps the passed in region     *      * @return <code>true</code> if the regions overlap     * @param n the northern boundary     * @param s the southern boundary     * @param e the eastern boundary     * @param w the western boundary     */    public boolean inRegion(float n, float s, float e, float w) {        // take care of the easy case first...        if ((s > northlat) || (n < southlat)) {            return false;        }        if (e < w) {            e += 360.0f;        }        if ((w > eastlon) || (e < westlon)) {            return false;        }        return true;    }}