//*********************************************************************
// TEMPORAL "RECURRENCE" FUNCTIONS
//*********************************************************************
/// <summary>
/// Loops (cycles) through numbers over time (e.g. 1 2 3 4 1 2 3 4 ...)
/// </summary>
public static Tnum Recurrence(Tdate startDate, Tdate endDate, IntervalType interval, int min, int max)
{
// Handle unknowns
Hstate top = PrecedingState(startDate.FirstValue, endDate.FirstValue);
if (top != Hstate.Known)
{
return(new Tnum(new Hval(null, top)));
}
DateTime start = startDate.ToDateTime;
DateTime end = endDate.ToDateTime;
Tnum result = new Tnum();
if (start != Time.DawnOf)
{
result.AddState(Time.DawnOf, 0);
}
DateTime indexDate = start;
int indexNumber = min;
while (indexDate < end)
{
result.AddState(indexDate, Convert.ToString(indexNumber));
indexDate = indexDate.AddInterval(interval, 1);
// Reset sequence
indexNumber++;
if (indexNumber > max)
{
indexNumber = min;
}
}
result.AddState(end, 0);
return(result);
}
public static Tnum IntervalsSince(Tdate startDate, Tdate endDate, IntervalType interval, int?startAt)
{
// Handle unknowns
Hstate top = PrecedingState(startDate.FirstValue, endDate.FirstValue);
if (top != Hstate.Known)
{
return(new Tnum(new Hval(null, top)));
}
DateTime start = startDate.ToDateTime;
DateTime end = endDate.ToDateTime;
Tnum result = new Tnum();
if (start != Time.DawnOf)
{
result.AddState(Time.DawnOf, 0);
}
DateTime indexDate = start;
int? indexNumber = startAt;
while (indexDate < end)
{
result.AddState(indexDate, Convert.ToDecimal(indexNumber));
indexNumber++;
indexDate = indexDate.AddInterval(interval, 1);
}
if (end < Time.EndOf)
{
result.AddState(end, 0);
}
return(result);
}