private static Polygon GetInfluencePolygon(double?possibleLatitude, double?possibleLongtitude, double radius)
{
if (!possibleLatitude.HasValue || !possibleLongtitude.HasValue)
{
return(null);
}
var latitude = possibleLatitude.Value;
var longtitude = possibleLongtitude.Value;
Gps centre = new Gps(latitude, longtitude);
// In metres
double worldRadius = 6371000;
// In metres
Gps[] points = new Gps[20];
CirclePoints(points, centre, worldRadius, radius);
var polygon = new Polygon();
polygon.Extrude = true;
polygon.AltitudeMode = AltitudeMode.RelativeToGround;
polygon.OuterBoundary = new OuterBoundary();
polygon.OuterBoundary.LinearRing = new LinearRing();
polygon.OuterBoundary.LinearRing.Coordinates = new CoordinateCollection();
points.ToList <Gps>().ForEach(g =>
{
polygon.OuterBoundary.LinearRing.Coordinates.Add(new SharpKml.Base.Vector(g.Latitude, g.Longtitude, 30));
});
// close the circle
polygon.OuterBoundary.LinearRing.Coordinates.Add(new SharpKml.Base.Vector(points.First().Latitude, points.First().Longtitude, 30));
return(polygon);
}
