/// <summary>
/// Tests whether this date is equal or after the date, when given weekday in given week occurs.
/// </summary>
/// <param name="weekNumber">Number of week. values 1, 2, 3, 4 are order of week, value 5 means last week of the month</param>
/// <param name="dayNumber">Number of weekday, value 0 is Sunday, 1 is Monday, .... 6 is Saturday</param>
/// <returns>Returns true, if this date is equal or is after the date given by weeknumber and daynumber</returns>
public bool IsEqualOrAfterWeekdayInWeek(int weekNumber, int dayNumber)
{
GregorianDateTime vc = this;
int[] xx = { 1, 7, 6, 5, 4, 3, 2 };
int dowFirstDay, firstGivenWeekday, requiredGivenWeekday, lastDayInMonth;
// prvy den mesiaca
dowFirstDay = xx[(7 + vc.day - vc.dayOfWeek) % 7];
// 1. x-day v mesiaci ma datum
firstGivenWeekday = xx[(dowFirstDay - dayNumber + 7) % 7];
// n-ty x-day ma datum
if ((weekNumber < 0) || (weekNumber >= 5))
{
requiredGivenWeekday = firstGivenWeekday + 28;
lastDayInMonth = GregorianDateTime.GetMonthMaxDays(vc.year, vc.month);
while (requiredGivenWeekday > lastDayInMonth)
{
requiredGivenWeekday -= 7;
}
}
else
{
requiredGivenWeekday = Convert.ToInt32(firstGivenWeekday + (weekNumber - 1) * 7);
}
return(vc.day >= requiredGivenWeekday);
}
public void NormalizeValues(ref int y1, ref int m1, ref int d1, ref double h1)
{
if (h1 < 0.0)
{
d1--;
h1 += 1.0;
}
else if (h1 >= 1.0)
{
h1 -= 1.0;
d1++;
}
if (d1 < 1)
{
m1--;
if (m1 < 1)
{
m1 = 12;
y1--;
}
d1 = GregorianDateTime.GetMonthMaxDays(y1, m1);
}
else if (d1 > GregorianDateTime.GetMonthMaxDays(y1, m1))
{
m1++;
if (m1 > 12)
{
m1 = 1;
y1++;
}
d1 = 1;
}
}
public void NextDay()
{
day++;
if (day > GregorianDateTime.GetMonthMaxDays(year, month))
{
month++;
if (month > 12)
{
month = 1;
year++;
}
day = 1;
}
dayOfWeek = (dayOfWeek + 1) % 7;
}
public void PreviousDay()
{
day--;
if (day < 1)
{
month--;
if (month < 1)
{
month = 12;
year--;
}
day = GregorianDateTime.GetMonthMaxDays(year, month);
}
dayOfWeek = (dayOfWeek + 6) % 7;
}
public int GetDaylightTimeStartDate(int nYear, ref GregorianDateTime vcStart)
{
vcStart.day = 1;
vcStart.month = Convert.ToInt32(StartDst.Month);
vcStart.year = nYear;
if (StartDst.Type == 1)
{
vcStart.day = StartDst.Day;
}
else
{
if (StartDst.Month == 5)
{
vcStart.day = GregorianDateTime.GetMonthMaxDays(nYear, StartDst.Month);
vcStart.InitWeekDay();
while (vcStart.dayOfWeek != StartDst.Day)
{
vcStart.PreviousDay();
vcStart.dayOfWeek = (vcStart.dayOfWeek + 6) % 7;
}
}
else
{
vcStart.day = 1;
vcStart.InitWeekDay();
while (vcStart.dayOfWeek != StartDst.Day)
{
vcStart.NextDay();
vcStart.dayOfWeek = (vcStart.dayOfWeek + 1) % 7;
}
vcStart.day += StartDst.Week * 7;
}
}
vcStart.shour = 1 / 24.0;
return(0);
}
public TResultCalendar(GCLocation loc, int nYear, int nMonth) : this()
{
CalculateCalendar(loc, new GregorianDateTime(nYear, nMonth, 1), GregorianDateTime.GetMonthMaxDays(nYear, nMonth));
}
