source: tmcsimulator/trunk/src/atmsdriver/model/PostmileCoords.java @ 274

package atmsdriver.model;



import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Scanner;



/**

 * PostmileCoords is a collection of Postmiles (id and LatLong Coordinates).

 * @author jdalbey

 */

public class PostmileCoords implements Iterable

{

    private List<Postmile> postmileList;

    public PostmileCoords()

    {

        postmileList = new ArrayList<Postmile>();

    }

    /** Accessor to value at given index */

    public Postmile get(int idx)

    {

        return postmileList.get(idx);

    }

    /** Return the size */

    public int size()

    {

        return postmileList.size();

    }

    /** Find the postmile with the given name */

    public Postmile find(String target)

    {

        int idx = 0;

        while (idx < postmileList.size() && !postmileList.get(idx).nameEquals(target))

        {

            idx++;

        }

        if (idx < postmileList.size())

        {

            return postmileList.get(idx);

        }

        else

        {

            return null;

        }

    }

    /** Load the postmile list from external file */

    public void load(Scanner scan)

    {

        try

        {

        String out = scan.next();

        //  split into an array 

        String[] results = out.split("\\n");

        for (String item : results)

        {

            String[] fields = item.split(",");

            String[] nameparts = fields[0].split(" ");

            String statepm = nameparts[2];

            // some postmiles come with a prefix, which we ignore

            if (Character.isLetter(statepm.charAt(0)))

            {

                statepm = statepm.substring(1);

            }  

            String revisedpm = nameparts[0] + " " + nameparts[1] + " " + statepm;

            Postmile pm;

            // If the file has 6 fields per line, include the perpx,y values

            if (fields.length == 6)

            {

                pm = new Postmile(revisedpm,fields[1],fields[2],fields[3],fields[4],fields[5]);

            }

            else // otherwise assume the file has just 4 fields

            {

                pm = new Postmile(revisedpm,fields[1],fields[2],fields[3]);

            }

            postmileList.add(pm);

        }

        }

        catch (Exception ex)  // probably badly formatted file

        {

            ex.printStackTrace();

        }

    }



    @Override

    public Iterator iterator()

    {

        return postmileList.iterator();

    }

    /**

     *  Postmile is a postmile id and its LatLong Coordinates.

     */

    final static class Postmile  

    {

        String name;  // the postmile name (Route,Direction,State postmile, e.g., 5 N 6.2)

        String latitude; // the latitude coordinate for this postmile

        String longitude; // the longitude coordinate for this postmile

        String street; // cross street name

        /* These fields are used by the map to adjust position of dot when zoomed */

        String perpx="0";  // perpendicular vector, x-component (default value)

        String perpy="0";  // perpendicular vector, y-component (default value)

        public Postmile(String name, String lat, String longitude, String street)

        {

            this.name = name.trim();

            this.latitude = lat.trim();

            this.longitude = longitude.trim();

            this.street = street.trim();

        }

        // This constructor is used if the file contains data for perpendicular vectors

        public Postmile(String name, String lat, String longitude, String street, String perpx, String perpy)

        {

            this.name = name.trim();

            this.latitude = lat.trim();

            this.longitude = longitude.trim();

            this.street = street.trim();

            this.perpx = perpx.trim();

            this.perpy = perpy.trim();

        }

        public boolean nameEquals(String target)

        {

            // remove .0 for comparing strings

            if (target.endsWith(".0"))

            {

                String truncTarget = target.substring(0,target.length()-2);

                return this.name.equals(truncTarget);

            }

            return this.name.equals(target);

        }

        @Override public boolean equals(Object aThat) 

        {

            if (this == aThat) return true;

            if (!(aThat instanceof Postmile)) return false;

            Postmile that = (Postmile) aThat;

            boolean r1 = this.name.equals(that.name);

            boolean r2 = this.latitude.equals(that.latitude);

            boolean r3 = this.longitude.equals(that.longitude);

            boolean r4 = this.street.equals(that.street);

            return r1 && r2 && r3 && r4;

        }

        @Override public String toString()

        {

            return name + ": " + latitude +","+ longitude +","+ street+","+ perpx +","+ perpy;

        }

        public String toJson()

        {

            String pattern =  "\n{\n   \"type\": \"Feature\",\n" +

                    "   \"id\": \"%s\",\n" +

                    "   \"geometry\":\n       {\n        \"type\": \"Point\",\n" +

                    "        \"coordinates\": [%s,%s]\n" +

                    "       },\n" +

                    "   \"properties\": \n" +         

                    "       {\"street\": \"%s\", " +

                    "\"color\": \"desiredcolor\", " +

                    "\"perpx\": \"%s\", " +

                    "\"perpy\": \"%s\"" +

                    "}\n},";



            return String.format(pattern, name, longitude, latitude, street, perpx, perpy);

        }

    }

}