distance method

  1. @override
double distance(
  1. LatLng p1,
  2. LatLng p2
)
override

Calculates distance with Haversine algorithm.

Accuracy can be out by 0.3% More on Wikipedia

Implementation

@override
double distance(final LatLng p1, final LatLng p2) {
  final sinDLat = sin((p2.latitudeInRad - p1.latitudeInRad) / 2);
  final sinDLng = sin((p2.longitudeInRad - p1.longitudeInRad) / 2);

  // Sides
  final a = sinDLat * sinDLat +
      sinDLng * sinDLng * cos(p1.latitudeInRad) * cos(p2.latitudeInRad);
  final c = 2 * atan2(sqrt(a), sqrt(1 - a));

  return equatorRadius * c;
}