public Double getDistance(String firstAddress, String secondAddress)
{
GeoCodingResult firstCoordinate = googleGeocoding.geocode(firstAddress);
GeoCodingResult secondCoordinate = googleGeocoding.geocode(secondAddress);
return(distanceEngine.evaluate(firstCoordinate, secondCoordinate));
}
public double evaluate(GeoCodingResult c1, GeoCodingResult c2)
{
double dlong = (c2.lng - c1.lng) * DEGREE_TO_RADIAN;
double dlat = (c2.lat - c1.lat) * DEGREE_TO_RADIAN;
double a = Math.Pow(Math.Sin(dlat / 2D), 2D) +
Math.Cos(c1.lat * DEGREE_TO_RADIAN) * Math.Cos(c2.lat * DEGREE_TO_RADIAN) * Math.Pow(Math.Sin(dlong / 2D), 2D);
double c = 2D * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1D - a));
return(EARTH_RADIUS_IN_METERS * c);
}
public Boolean equals(GeoCodingResult that)
{
if (that == null)
{
return(false);
}
if (this == that)
{
return(true);
}
return(lat == that.lat && lng == that.lng);
}
