private List<GoogleMapsLocation> DecodePolylinePoints(string encodedPoints)
{
if (encodedPoints == null || encodedPoints == "") return null;
List<GoogleMapsLocation> poly = new List<GoogleMapsLocation>();
char[] polylinechars = encodedPoints.ToCharArray();
int index = 0;
int currentLat = 0;
int currentLng = 0;
int next5bits;
int sum;
int shifter;
try
{
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);
var p = new GoogleMapsLocation();
p.Latitude = Convert.ToDouble(currentLat)/100000.0;
p.Longitude = Convert.ToDouble(currentLng)/100000.0;
poly.Add(p);
}
}
catch (Exception ex)
{
// logo it
}
return poly;
}
private List <GoogleMapsLocation> DecodePolylinePoints(string encodedPoints)
{
if (encodedPoints == null || encodedPoints == "")
{
return(null);
}
List <GoogleMapsLocation> poly = new List <GoogleMapsLocation>();
char[] polylinechars = encodedPoints.ToCharArray();
int index = 0;
int currentLat = 0;
int currentLng = 0;
int next5bits;
int sum;
int shifter;
try
{
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);
var p = new GoogleMapsLocation();
p.Latitude = Convert.ToDouble(currentLat) / 100000.0;
p.Longitude = Convert.ToDouble(currentLng) / 100000.0;
poly.Add(p);
}
}
catch (Exception ex)
{
// logo it
}
return(poly);
}
