geopointer
A lightweight flutter library for common latitude and longitude calculation..
Getting Started
GeoPointer provides a lightweight library for common latitude and longitude calculation.
This library supports both, the "Haversine" and the "Vincenty" algorithm.
"Haversine" is a bit faster but "Vincenty" is far more accurate!
Basic usage
GDistance
final GDistance distance = new GDistance();
//in km = 423
final int km = distance.as(LengthUnit.Kilometer,
new GeoLatLng(52.518611,13.408056),new GeoLatLng(51.519475,7.46694444));
//in meter = 422591.551
final int meter = distance(
new GeoLatLng(52.518611,13.408056),
new GeoLatLng(51.519475,7.46694444)
);
Offset
final GDistance distance = const GDistance();
final num distanceInMeter = (EARTH_RADIUS * math.PI / 4).round();
final p1 = new GeoLatLng(0.0, 0.0);
final p2 = distance.offset(p1, distanceInMeter, 180);
// GeoLatLng(latitude:-45.219848, longitude:0.0)
print(p2.round());
// 45° 13' 11.45" S, 0° 0' 0.00" O
print(p2.toSexagesimal());
GeoPath smoothing
// coordinates is a list of coordinates
final GeoPath path = new GeoPath.from(coordinates);
// Result is below
final GeoPath steps = path.equalize(8,smoothPath: true);