// **********************************************************************// // <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/tools/roads/Intersection.java,v// $// $RCSfile: Intersection.java,v $// $Revision: 1.1.2.2 $// $Date: 2004/10/14 18:27:43 $// $Author: dietrick $// // **********************************************************************package com.bbn.openmap.tools.roads;import com.bbn.openmap.LatLonPoint;import com.bbn.openmap.omGraphics.OMGraphicList;import java.awt.Color;import java.util.Enumeration;import java.util.Vector;public class Intersection extends Waypoint implements RoadObject {    /**     * The list of roads at this intersection.     */    Vector roads = new Vector(4);    /**     * The "name" of this intersection. Intersections are named after     * their coordinates. Coordinates (in degrees) are multiplied by     * 10000000 and truncated to integers.     */    private String name;    private boolean displayAsTerminal = false;    public static int GRID = 100000;//was 100000    /**     * Create an Intersection at a given location.     *      * @param loc the location of the intersection.     */    public Intersection(LatLonPoint loc, RoadLayer layer) {        this(loc, getLatLonPointName(loc), layer);    }    public Intersection(LatLonPoint loc, String name, RoadLayer layer) {        super(loc, layer);        this.name = name;    }    public static Class getGraphicClass() {        return Graphic.class;    }    public static String getLatLonPointName(LatLonPoint loc) {        StringBuffer buf = new StringBuffer(24);        buf.append((int) (loc.getLatitude() * GRID));        buf.append(",");        buf.append((int) (loc.getLongitude() * GRID));        return new String(buf.toString());    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    /**     * Add a road to this intersection.     *      * @param road The road to be added.     */    public void addRoad(Road road) {        roads.addElement(road);    }    public void removeRoad(Road road) {        roads.removeElement(road);    }    public int getRoadCount() {        return roads.size();    }    /**     * Merge another intersection with this one. All the roads of the     * other intersection are removed and added onto this.     */    public void merge(Intersection other) {        for (Enumeration e = other.getRoads(); e.hasMoreElements();) {            Road road = (Road) e.nextElement();            road.changeIntersection(other, this);            addRoad(road);        }        other.clear();        setModified(true);    }    public void clear() {        roads.setSize(0);    }    /**     * Get an enumeration of the roads at this intersection.     */    public Enumeration getRoads() {        return roads.elements();    }    public Road getRoad(int ix) {        return (Road) roads.elementAt(ix);    }    public void setTerminalStatus(boolean yes) {        displayAsTerminal = yes;        update();    }    public boolean getTerminalStatus() {        return displayAsTerminal;    }    /**     * Render the graphics for this intersection.     */    public void render(OMGraphicList gl, boolean forceNew) {        RoadGraphic visual = getVisual();        if (visual == null || forceNew) {            visual = new Graphic(displayAsTerminal);            setVisual(visual);        }        gl.addOMGraphic((Graphic) visual);    }    /**     * Render the graphics for the roads leaving this intersection.     */    public void renderRoads(OMGraphicList gl, boolean forceNew) {        for (Enumeration e = roads.elements(); e.hasMoreElements();) {            Road road = (Road) e.nextElement();            if (road.getFirstIntersection() == this)                road.render(gl, forceNew);        }    }    /**     * Override equals so that two Intersections at the same location     * are the same Intersection.     */    public boolean equals(Object other) {        if (other instanceof Intersection) {            return ((Intersection) other).getLocation().equals(getLocation());        }        return false;    }    /**     * Override hashCode so that two Intersections at the same     * location have the same hashcode.     */    public int hashCode() {        LatLonPoint llp = getLocation();        int hc1 = Float.floatToIntBits(llp.getLatitude());        int hc2 = Float.floatToIntBits(llp.getLongitude());        return hc1 ^ (hc2 << 5) ^ (hc2 >>> 27);    }    public Intersection startMove(boolean shifted) {        if (shifted) {            RoadLayer layer = getRoadLayer();            Road road = layer.createRoad(this);            return road.getOtherIntersection(this);        } else {            return this;        }    }    public void update() {        super.update();        for (Enumeration e = roads.elements(); e.hasMoreElements();) {            ((Road) e.nextElement()).updateLines();        }    }    public String toString() {        return super.toString() + "[" + getName() + ","                + getLocation().toString() + "] " + getRoadCount() + " roads";    }    /**     * Inner class for the visual representation of an Intersection.     * The visual representation of the the Waypoint base class is     * extended so that the move method can also update the roads     * connected to the intersection.     */    public class Graphic extends Waypoint.Graphic implements RoadGraphic {        Graphic(boolean displayAsTerminal) {            super(displayAsTerminal ? 5 : 3);            if (displayAsTerminal)                setLinePaint(Color.red);        }        public RoadObject getRoadObject() {            return Intersection.this;        }        public Intersection getIntersection() {            return Intersection.this;        }        public String toString() {            return super.toString() + "[" + Intersection.this.toString() + "]";        }    }}