public static bool IsSameHalfyear(YearMonth yearStartMonth, DateTime left, DateTime right)
{
int leftYear = TimeTool.GetYearOf(yearStartMonth, left);
int rightYear = TimeTool.GetYearOf(yearStartMonth, right);
if (leftYear != rightYear)
{
return(false);
}
return(TimeTool.GetHalfyearOfMonth(yearStartMonth, (YearMonth)left.Month) == TimeTool.GetHalfyearOfMonth(yearStartMonth, (YearMonth)right.Month));
}
public static DateTime Halfyear(YearMonth yearStartMonth)
{
DateTime now = ClockProxy.Clock.Now;
int year = now.Year;
if (now.Month - (int)yearStartMonth < 0)
{
year--;
}
YearHalfyear halfyear = TimeTool.GetHalfyearOfMonth(yearStartMonth, (YearMonth)now.Month);
int months = ((int)halfyear - 1) * TimeSpec.MonthsPerHalfyear;
return(new DateTime(year, (int)yearStartMonth, 1).AddMonths(months));
}
public Halfyear(DateTime moment, ITimeCalendar calendar)
: this(TimeTool.GetYearOf(calendar.YearBaseMonth, calendar.GetYear(moment), calendar.GetMonth(moment)),
TimeTool.GetHalfyearOfMonth(calendar.YearBaseMonth, (YearMonth)calendar.GetMonth(moment)), calendar)
{
}