calculateDistanceBetweenTwoPoints method
To get the distance between the 2 points for latitudes and longitudes
Implementation
double calculateDistanceBetweenTwoPoints({required double latitude1, required double longitude1, required double latitude2, required double longitude2}) {
var p = 0.017453292519943295;
var c = cos;
var a = 0.5 - c((latitude1 - latitude1) * p) / 2 + c(latitude1 * p) * c(latitude1 * p) * (1 - c((longitude2 - longitude1) * p)) / 2;
return 12742 * asin(sqrt(a));
}