using System;

using System.Collections.Generic;

using System.Linq;

using CoordinateSharp;

​

public class Program

{

    public static void Main()

    {

        //Create a four point GeoFence around Colorado

        List<GeoFence.Point> points = new List<GeoFence.Point>();

        points.Add(new GeoFence.Point(41.003444, -109.045223));

        points.Add(new GeoFence.Point(41.003444, -102.041524));

        points.Add(new GeoFence.Point(36.993076, -102.041524));

        points.Add(new GeoFence.Point(36.993076, -109.045223));

        points.Add(new GeoFence.Point(41.003444, -109.045223));

        GeoFence gf = new GeoFence(points);

        //Create a densified geofence

        GeoFence densegf = Densify(gf, new Distance(10, DistanceType.Kilometers));

        foreach(var p in densegf.Points)

        {

            Console.WriteLine(p.Latitude + "," + p.Longitude);

        }

        //Out of bounds test

        Coordinate c = new Coordinate(41.02, -109.02, new EagerLoad(false));

        Console.WriteLine(densegf.IsPointInPolygon(c));

        //In bounds test

         c = new Coordinate(41.002, -109.02, new EagerLoad(false));

        Console.WriteLine(densegf.IsPointInPolygon(c));

    }

​

    public static GeoFence Densify(GeoFence gf, Distance distance)

    {

        if (gf.Points.Count < 2)

        {

            throw new InvalidOperationException("You cannot perform densification a Geofence that has less than 2 points.");

        }

​

        //Store the original points for reference as _points will be modified

        List<GeoFence.Point> ogpoints = new List<GeoFence.Point>(gf.Points);

        //Create a collection of point collections to insert into the polygon

        List<List<GeoFence.Point>> inserts = new List<List<GeoFence.Point>>();

        //Iterate the polygon to create densification points

        for (int x = 0; x < ogpoints.Count - 1; x++)

        {

            var p1 = ogpoints[x];

            var p2 = ogpoints[x + 1];

            List<GeoFence.Point> ipoints = new List<GeoFence.Point>();

            //Coordinate to move

            Coordinate mc = new Coordinate(p1.Latitude, p1.Longitude, new EagerLoad(false));

            //Destination

            Coordinate dc = new Coordinate(p2.Latitude, p2.Longitude, new EagerLoad(false));

            while (new Distance(mc, dc).Meters > distance.Meters)

            {

                mc.Move(dc, distance, Shape.Ellipsoid);

                ipoints.Add(new GeoFence.Point(mc.Latitude.ToDouble(), mc.Longitude.ToDouble()));

            }

​

            inserts.Add(ipoints);

        }

​

        List<GeoFence.Point> densePoints = new List<GeoFence.Point>();

        //Create new points collection.

        for (int x = 0; x < ogpoints.Count - 1; x++)

        {

            var p = ogpoints[x];

            densePoints.Add(p);

            foreach (var dp in inserts[x])

            {

                densePoints.Add(dp);

            }

        }

​

        //Add last point to close shape.

        densePoints.Add(ogpoints.Last());

        return new GeoFence(densePoints);

    }

}