public GPGregorianTime TimeByAddingHours(double dHours)
{
GPGregorianTime vc = new GPGregorianTime(this);
vc.addDayHours(dHours / 24.0);
return(vc);
}
// return values
// 0 - DST is off, yesterday was off
// 1 - DST is on, yesterday was off
// 2 - DST is on, yesterday was on
// 3 - DST is off, yesterday was on
public int GetDaylightChangeType(GPGregorianTime vc2)
{
long uToday = vc2.getTimestamp();
long uYesterday = uToday - 86400;
Transition tzToday = FindActiveTransition(uToday);
Transition tzYesterday = FindActiveTransition(uYesterday);
bool t1 = tzToday != null ? tzToday.Dst : false;
bool t2 = tzYesterday != null ? tzYesterday.Dst : false;
if (t1)
{
if (t2)
{
return(2);
}
else
{
return(1);
}
}
else if (t2)
{
return(3);
}
else
{
return(0);
}
}
public void Copy(GPGregorianTime vc)
{
p_year = vc.getYear();
p_month = vc.getMonth();
p_day = vc.getDay();
setDayHours(vc.getDayHours());
setLocationProvider(vc.getLocationProvider());
recalculateJulianGreenwichTime();
}
public double BiasHoursForDate(GPGregorianTime vc)
{
Transition trans = FindActiveTransition(vc.getTimestamp());
if (trans != null)
{
return(Convert.ToDouble(trans.OffsetInSeconds - OffsetSeconds) / 3600.0);
}
return(0.0);
}
// vracia -1, ak zadany den je den nasledujuci po THIS
// vracia 1 ak THIS je nasledujuci den po zadanom dni
public int CompareYMD(GPGregorianTime v)
{
if (v.getYear() < getYear())
{
return((getYear() - v.getYear()) * 365);
}
else if (v.getYear() > getYear())
{
return((getYear() - v.getYear()) * 365);
}
if (v.getMonth() < getMonth())
{
return((getMonth() - v.getMonth()) * 31);
}
else if (v.getMonth() > getMonth())
{
return((getMonth() - v.getMonth()) * 31);
}
return(getDay() - v.getDay());
}
public bool IsBeforeThis(GPGregorianTime date)
{
int y1, y2, m1, m2, d1, d2;
d1 = this.getDay();
d2 = date.getDay();
m1 = this.getMonth();
m2 = date.getMonth();
y1 = this.getYear();
y2 = date.getYear();
if (y1 > y2)
{
return(false);
}
else if (y1 < y2)
{
return(true);
}
else if (m1 > m2)
{
return(false);
}
else if (m1 < m2)
{
return(true);
}
else if (d1 < d2)
{
return(true);
}
else
{
return(false);
}
}
public GPGregorianTime(GPGregorianTime vc)
{
Copy(vc);
}
public bool IsLeapYear()
{
return(GPGregorianTime.IsLeapYear(getYear()));
}
