public Distance(string distance)
{
if (distance == null ||
(distance != "-" && !distance.EndsWith("km") && !distance.EndsWith("AU") && !distance.EndsWith("AE") && !distance.EndsWith("m")))
{
throw new ArgumentException();
}
_hasDistance = distance != "-";
if (!_hasDistance)
{
return;
}
string distanceValue;
if (distance.TryStripFromEnd(" km", out distanceValue))
{
_distanceInKm = int.Parse(NormalizeNumber(distanceValue), CultureInfo.InvariantCulture);
return;
}
if (distance.TryStripFromEnd(" m", out distanceValue))
{
_distanceInKm = int.Parse(NormalizeNumber(distanceValue), CultureInfo.InvariantCulture) / 1000;
return;
}
if (distance.TryStripFromEnd(" AU", out distanceValue) || distance.TryStripFromEnd(" AE", out distanceValue))
{
var distanceInAU = distanceValue.ToDoubleNormalized();
_distanceInKm = (long)UnitConverter.AUToKm(distanceInAU);
return;
}
throw new ArgumentException();
}
public static long GetLowerBoundInKm(Distance distance)
{
if (distance.AUValue < 0.1)
{
return(Math.Max(distance.KmValue - 6000, 1000));
}
if (distance.KmValue < UnitConverter.AUToKm(0.15))
{
//the cut to 0.1 AU instead of km seems to be 10,000,000 km -> thank you Blue Katelo for finding out
return(10000000);
}
return(distance.KmValue - POINT_FIVE_AU_IN_KM);
}