//============================================================================================
// Create a new DataTime forward elapsed from given data
//============================================================================================
DateTime TimeComparer::DetermineBackwardsElapsed(const DateTime& dt, const PeriodData& pd)
{
PartialDateTime isoDt(dt, CalType::CalType_ISO);
//add time
Time tm;
FixedDateTime fwdDate = isoDt.GetFixed() - tm.ConvertToFixed(HMS(pd.elapsedHours, pd.elapsedMinutes, pd.elapsedSeconds, pd.elapsedMilliseconds));
return DateTime(fwdDate);
}
//========================================================================================
// Create a new DataTime forward elapsed from given data
//=========================================================================================
DateTime YearWeekDayTimeComparer::DetermineForwardElapsed(const DateTime& dt, const PeriodData& pd)
{
PartialDateTime isoDt(dt, CalType::CalType_ISO);
int year = isoDt.GetYear() + pd.elapsedYears;
PartialDateTime pDt(year, 1, 1, CalType::CalType_ISO);
FixedDateTime fwdDate = calmath::ExtractDate(pDt.GetFixed()) + (pd.elapsedWeeks * 7) + pd.elapsedDays - 1;
//add time
Time tm;
fwdDate += (tm.ExtractTime(dt.GetFixed()) + tm.ConvertToFixed(HMS(pd.elapsedHours, pd.elapsedMinutes, pd.elapsedSeconds, pd.elapsedMilliseconds)));
return DateTime(fwdDate);
}