//function to decode,encoded SharedGoogleDataModels.Location points
public static List <SharedPartnerDataModels.Location> locDecodePoly(string encoded)
{
List <SharedPartnerDataModels.Location> poly = new List <SharedPartnerDataModels.Location>();
int index = 0, len = encoded.Length;
int lat = 0, lng = 0;
while (index < len)
{
int b, shift = 0, result = 0;
do
{
b = encoded[index++] - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do
{
b = encoded[index++] - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
SharedPartnerDataModels.Location p = new SharedPartnerDataModels.Location((((double)lat / 1E5)),
(((double)lng / 1E5)));
poly.Add(p);
}
return(poly);
}
//var geo = new Geocoder(ctx);//var sourceAddresss = await geo.GetFromLocationNameAsync(sourceLocationName, 1);
//sourceAddress.ToList().ForEach((addr) => { latLngSource = new LatLng(addr.Latitude, addr.Longitude); });
//var destAddress = await geo.GetFromLocationNameAsync(destinationLocationName, 1);
//destAddress.ToList().ForEach((addr) => { latLngDestination = new LatLng(addr.Latitude, addr.Longitude); });
//using google geocode api to convert location to latlng
//string strGeoCode = string.Format ("address={0}",strLocation);
//string strGeoCodeFullURL = string.Format (Constants.strGeoCodingUrl,strGeoCode);
//
//string strResult= FnHttpRequestOnMainThread(strGeoCodeFullURL);
//if ( strResult != Constants.strException )
//{
// var objGeoCodeJSONClass= JsonConvert.DeserializeObject<GeoCodeJSONClass> (strResult);
// Position= new LatLng ( objGeoCodeJSONClass.results [0].geometry.location.lat , objGeoCodeJSONClass.results [0].geometry.location.lng );
//}
//function to decode,encoded points
public static List <SharedPartnerDataModels.Location> FnDecodePolylinePoints(string encodedPoints)
{
if (string.IsNullOrEmpty(encodedPoints))
{
return(null);
}
var poly = new List <SharedPartnerDataModels.Location>();
char[] polylinechars = encodedPoints.ToCharArray();
int index = 0;
int currentLat = 0;
int currentLng = 0;
int next5bits;
int sum;
int shifter;
while (index < polylinechars.Length)
{
// calculate next latitude
sum = 0;
shifter = 0;
do
{
next5bits = (int)polylinechars[index++] - 63;
sum |= (next5bits & 31) << shifter;
shifter += 5;
} while (next5bits >= 32 && index < polylinechars.Length);
if (index >= polylinechars.Length)
{
break;
}
currentLat += (sum & 1) == 1 ? ~(sum >> 1) : (sum >> 1);
//calculate next longitude
sum = 0;
shifter = 0;
do
{
next5bits = (int)polylinechars[index++] - 63;
sum |= (next5bits & 31) << shifter;
shifter += 5;
} while (next5bits >= 32 && index < polylinechars.Length);
if (index >= polylinechars.Length && next5bits >= 32)
{
break;
}
currentLng += (sum & 1) == 1 ? ~(sum >> 1) : (sum >> 1);
SharedPartnerDataModels.Location p = new SharedPartnerDataModels.Location();
p.lat = Convert.ToDouble(currentLat) / 100000.0;
p.lng = Convert.ToDouble(currentLng) / 100000.0;
poly.Add(p);
}
return(poly);
}
//Reverse geocode : convert Locaton to name
public async Task <Address> ReverseGeoCode(MainActivity mainActivity, Context ctx, SharedPartnerDataModels.Location loc)
{
Geocoder geocoder = new Geocoder(ctx);
IList <Address> addressList = await geocoder.GetFromLocationAsync(loc.lat, loc.lng, 5);
Address address = addressList.FirstOrDefault();
return(address);
}
