public static string FormatDayLength(SolarTimes st, SolarPosition sp)
{
DateTime? begin = null, end = null;
if (st.Sunrise != null) {
begin = st.Sunrise.Value.ExtractLocal();
}
if (st.Sunset != null) {
end = st.Sunset.Value.ExtractLocal();
}
double diff = 0;
if ((begin != null) && (end != null)) {
diff = (end.Value - begin.Value).TotalSeconds;
}
double fullday = 24*3600;
int h = (int) (diff / 3600.0);
int m = (int) ((diff - h * 3600.0) / 60.0);
// can be all day or all night
if ((diff >= fullday) && (sp.Elevation < 0)) {
h = 0;
} else if ((diff == 0) && (sp.Elevation >= 0)) {
h = 24;
}
return string.Format("{0}h {1}m", h, m);
}
public static void Print(SolarPosition sp, SolarTimes sns)
{
string template = "{0,-12} : {1}\n";
string s = String.Empty;
s += sp.Print(template, true);
s += "\n";
s += sns.Print(template, false);
Console.WriteLine(s);
}
public CaptionInfo(string loc, Position pos, UTCDate udt)
{
this.loc = loc;
this.pos = pos;
this.dst = udt.GetDST();
this.udt = udt;
this.sp = Orbit.CalcSolarPosition(pos, udt);
this.st = Orbit.CalcSolarTimes(pos, udt);
SolarTimes st_ss = PointFinder.FindDawnDusk(pos, udt);
this.dawn = st_ss.Sunrise;
this.dusk = st_ss.Sunset;
}