computeLength static method
Returns the length of the given path, in meters, on Earth.
Implementation
static num computeLength(List<LatLng> path) {
if (path.length < 2) {
return 0;
}
final prev = path.first;
var prevLat = MathUtil.toRadians(prev.latitude);
var prevLng = MathUtil.toRadians(prev.longitude);
final length = path.fold<num>(0.0, (value, point) {
final lat = MathUtil.toRadians(point.latitude);
final lng = MathUtil.toRadians(point.longitude);
value += distanceRadians(prevLat, prevLng, lat, lng);
prevLat = lat;
prevLng = lng;
return value;
});
return length * earthRadius;
}