marchdev-tk/google_polyline_algorithm

Dart implementation of Googles Polyline Encoding lossy compression Algorithm.

google_polyline_algorithm's Issues

Possible issue with ~ operator in Chrome-web

In the decodePolyline method the ~ operator is used. I don't believe that this operator works as expected on Chrome. If you run the example in the library the negative longitudes are incorrect as a result. Things are fine on Android.

Windows 10/64 bit

A possible fix/workaround:

  final coordinateChange =
  //(result & 1) != 0 ? ~(result >> 1) : (result >> 1);
  (result & 1) != 0 ? (~BigInt.from(value)).toInt() : value;

How do I convert the return from decodePolyline to List<LatLng>?

How do I convert the return from decodePolyline to List?

print(result.length);

List resultado = decodePolyline(road.polylineEncoded.toString());

print(resultado);
print(resultado.length);

full code https://github.com/AlysonTrizotto/LocalizaCliente/blob/main/lib/componentes/rota.dart

Invalid value: Not in inclusive range

Hello,

Is there anything we can do for this annoying problem when the encoder encodes string with backslashes etc and then dart can't read it correctly and I am still getting Invalid value: Not in inclusive range when decoding it

'List<List<String>>' is not a subtype of type 'List<List<num>>' in type cast

Error:type 'List<List>' is not a subtype of type 'List<List>' in type cast

When I'm trying to pass a list of coordinates to encode getting the above issue.

Example:List of coordinates
[[26.7784002, 75.8425027], [26.7786778, 75.8425991], [26.7787995, 75.8428689], [26.7787386, 75.8431947], [26.7786963, 75.8435242], [26.7788872, 75.8437456], [26.7790054, 75.843449], [26.77906, 75.8431203], [26.7791082, 75.8428205], [26.7791817, 75.8425138], [26.7790115, 75.8422522], [26.7790001, 75.8419491], [26.7792244, 75.8417791], [26.7794847, 75.8418831], [26.7794877, 75.8421887], [26.7792773, 75.8424163], [26.7790088, 75.8422836], [26.7787782, 75.8421037], [26.7784653, 75.8420592], [26.7781823, 75.8420604], [26.7781429, 75.8423668]]

Some code of snapshot below
List temp=[];
for (int j = 0; j < getRoutesData!.data![i].routeCoordinates!.length; j++)
{
temp.add([getRoutesData!.data![i].routeCoordinates![j].lat,
getRoutesData!.data![i].routeCoordinates![j].lng].toString());
}
getRoutesData!.data![i].dataList.add(temp);
getRoutesData!.data![i].dataString=getRoutesData!.data![i].dataList.join(','+' ');
getRoutesData!.data![i].encodedString=encodePolyline(getRoutesData!.data![i].dataList as List<List>);