public Coordinate travel(double bearingDegrees, double distance)
{
double er = Kilometers.create().convertTo(6366.707);
double distRatio = distance / er;
double distRatioSine = Math.Sin(distRatio);
double distRatioCosine = Math.Cos(distRatio);
//get lat and long in radians
double startLatRad = latitude * Math.PI / 180;
double startLonRad = longitude * Math.PI / 180;
double startLatCos = Math.Cos(startLatRad);
double startLatSin = Math.Sin(startLatRad);
double bearingRadians = bearingDegrees * Math.PI / 180;
double endLatRads = Math.Asin((startLatSin * distRatioCosine)
+ (startLatCos * distRatioSine * Math.Cos(bearingRadians)));
double endLonRads = startLonRad + Math.Atan2(Math.Sin(bearingRadians)
* distRatioSine * startLatCos,
distRatioCosine - startLatSin * Math.Sin(endLatRads));
return(create(endLatRads / Math.PI * 180, endLonRads / Math.PI * 180));
}
public static Kilometers create()
{
if (unit == null)
{
unit = new Kilometers();
}
return(unit);
}
public double distance(Coordinate coord)
{
double er = Kilometers.create().convertTo(6366.707);
double latFrom = toRadians(getLat());
double latTo = toRadians(coord.getLat());
double lngFrom = toRadians(getLng());
double lngTo = toRadians(coord.getLng());
double d = Math.Acos(Math.Sin(latFrom) * Math.Sin(latTo)
+ Math.Cos(latFrom) * Math.Cos(latTo) * Math.Cos(lngTo - lngFrom))
* er;
return(d);
}
