public bool Contains(LatLng latlng)
{
bool containsLat = ContainsLatitude(latlng);
bool containsLng = ContainsLongitude(latlng);
return containsLat && containsLng;
}
public void Extend(LatLng latlng)
{
if (this.IsNull())
{
SW = latlng.Clone();
NE = latlng.Clone();
}
ExtendLatitude(latlng);
ExtendLongitude(latlng);
}
/// <summary>
/// Get the distance between this point and point b (in meters)
/// </summary>
/// <param name="b"></param>
/// <returns></returns>
public double DistanceFrom(LatLng b)
{
return Distance(this, b);
}
public static string Serialize(LatLng latLng)
{
return string.Format("{0},{1}", latLng.lat.ToString(MapHelper.UsCulture), latLng.lng.ToString(MapHelper.UsCulture));
}
/// <summary>
/// Get the distance between two points (in meters)
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static double Distance(LatLng a, LatLng b)
{
double distance = 0.0;
double lat1 = a.lng * Math.PI / 180.0;
double lon1 = a.lat * Math.PI / 180.0;
double lat2 = b.lng * Math.PI / 180.0;
double lon2 = b.lat * Math.PI / 180.0;
distance += 1000 * 6378.7 * Math.Acos
(Math.Sin(lat1) * Math.Sin(lat2) +
Math.Cos(lat1) * Math.Cos(lat2) * Math.Cos(lon2 - lon1));
return Math.Round(distance);
}
private bool ContainsLatitude(LatLng latlng)
{
return (latlng.Lat <= NE.Lat) && (latlng.Lat >= SW.Lat);
}
public LatLngBounds(LatLng sw, LatLng ne)
{
this.SW = new LatLng(sw.Lat, sw.Lng);
this.NE = new LatLng(ne.Lat, ne.Lng);
}
private void ExtendLongitude(LatLng latlng)
{
if (this.IsEmpty() || !ContainsLongitude(latlng))
{
double swDistance = Math.Abs(latlng.Lng - SW.Lng);
double neDistance = Math.Abs(latlng.Lng - NE.Lng);
if (swDistance > neDistance)
{
NE.Lng = latlng.Lng;
}
else
{
SW.Lng = latlng.Lng;
}
}
}
private void ExtendLatitude(LatLng latlng)
{
if (this.IsEmpty() || !ContainsLatitude(latlng))
{
if (latlng.Lat > NE.Lat)
{
NE.Lat = latlng.Lat;
}
else
{
SW.Lat = latlng.Lat;
}
}
}
private bool ContainsLongitude(LatLng latlng)
{
return (latlng.Lng <= NE.Lng) && (latlng.Lng >= SW.Lng);
}
