source: proiecte/ptvs/src/vnsim/map/object/Cross.java @ 31

/************************************************************************************
 * Copyright (C) 2008 by Politehnica University of Bucharest and Rutgers University
 * All rights reserved.
 * Refer to LICENSE for terms and conditions of use.
 ***********************************************************************************/
package vnsim.map.object;

import vnsim.vehicular.simulator.intersections.*;

/**
 * @author Victor-Radu
 */
public class Cross implements Comparable<Cross>, java.io.Serializable {
        
        /** <code>serialVersionUID</code> */
        private static final long serialVersionUID = -5883719321862303634L;
        
        protected int roadIndex;                // index of the current road
        protected int pointIndex;               // index of the intersection point on the current road 
        protected int crossRoadIndex;   // index of the crossing road
        protected int crossPointIndex;  // index of the intersection point on the crossing street

        public int intersectionIndex = -1; //index of the "Intersection" object in
                        //the global vector "allIntersections"
        
        public Intersection intersection;

        public Cross(int roadIndex, int pointIndex, int crossRoadIndex, int crossPointIndex) {
                this.roadIndex = roadIndex;
                this.pointIndex = pointIndex;
                this.crossRoadIndex = crossRoadIndex;
                this.crossPointIndex = crossPointIndex;
        }
        
        
        public int getCrossPointIndex() {
                return crossPointIndex;
        }
        public void setCrossPointIndex(int crossPointIndex) {
                this.crossPointIndex = crossPointIndex;
        }
        public int getRoadIndex() {
                return roadIndex;
        }
        public void setRoadIndex(int roadIndex) {
                this.roadIndex = roadIndex;
        }
        public int getCrossRoadIndex() {
                return crossRoadIndex;
        }
        public void setCrossRoadIndex(int crossRoadIndex) {
                this.crossRoadIndex = crossRoadIndex;
        }
        public int getPointIndex() {
                return pointIndex; 
        }
        public void setPointIndex(int pointIndex) {
                this.pointIndex = pointIndex;
        }
        
        /**
         * @override
         * @param arg0
         * @return
         */
        public int compareTo(Cross arg0) {
                Cross c = arg0;
                int r = pointIndex - c.getPointIndex();
                if (r == 0)
                         /* this happens when there is more than one crossroads at the 
                     * same point (common)
                     */
                    r = crossRoadIndex - c.getCrossRoadIndex();
                /* cross road index could also be same at the same point when
             * the point intersects with a circle. For example, TLID 60255246
             * (Hardley Dr.) intersects with two different points on cross 
             * road TLID 60290145 (also Hardley Dr.). Another example is
             * TLID 60260224 (Academy St.) and TLID 60260225 (Brandywine Cir.).
             * There are many such examples.
             */
            
                return r;
        }
}