public static long[] GetDataTimeExtent(DateTime min, DateTime max, double m, out DateTimeStep dateTimeStep)
{
double span = max.Ticks - min.Ticks;
double target = span / m;
int count = 0;
int i = _dateTimeSteps.Count - 1;
double lastStepValue = 0;
foreach (var step in _dateTimeSteps)
{
if (target > lastStepValue && target < step.DateTimeStepMaxValue)
{
i = count;
i = Math.Max(0, i - 1);
break;
}
lastStepValue = step.DateTimeStepMaxValue;
count++;
}
long[] ret = new long[2];
ret[0] = RoundDateTimeTo(min, _dateTimeSteps[i]).Ticks;
ret[1] = AddToDateTime(RoundDateTimeTo(AddToDateTime(max, _dateTimeSteps[i]), _dateTimeSteps[i]), _dateTimeSteps[i]).Ticks;
dateTimeStep = new DateTimeStep()
{
DateTimeStepGranularity = _dateTimeSteps[i].DateTimeStepGranularity,
DateTimeStepMaxValue = _dateTimeSteps[i].DateTimeStepMaxValue,
DateTimeStepValue = _dateTimeSteps[i].DateTimeStepValue
};
return(ret);
}
public static DateTime AddToDateTime(DateTime dt, DateTimeStep dateTimeStep)
{
if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Second)
{
return(new DateTime(dt.Ticks + TimeSpan.FromSeconds(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Minute)
{
return(new DateTime(dt.Ticks + TimeSpan.FromMinutes(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Hour)
{
return(new DateTime(dt.Ticks + TimeSpan.FromHours(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Day)
{
return(new DateTime(dt.Ticks + TimeSpan.FromDays(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Month)
{
return(dt.AddMonths((int)dateTimeStep.DateTimeStepValue));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Year)
{
return(dt.AddYears((int)dateTimeStep.DateTimeStepValue));
}
else
{
return(DateTime.Now);
}
}
public static string GetLabel(DateTime dt, DateTimeStep dateTimeStep)
{
//MM/dd/yyyy HH:mm:ss
if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Second ||
dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Minute)
{
return(dt.ToString("mm:ss"));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Hour)
{
return(dt.ToString("HH:mm"));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Day)
{
return(dt.ToString("MM/dd/yyyy"));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Month)
{
return(dt.ToString("MM/yyyy"));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Year)
{
return(dt.ToString("yyyy"));
}
return("");
}
public static DateTime RemoveFromDateTime(DateTime dt, DateTimeStep dateTimeStep)
{
return(AddToDateTime(dt, new DateTimeStep()
{
DateTimeStepGranularity = dateTimeStep.DateTimeStepGranularity,
DateTimeStepValue = -dateTimeStep.DateTimeStepValue
}));
}
public static DateTime IncludeDateTime(DateTime from, DateTime to, DateTimeStep dateTimeStep, bool inclusive, out int stepsTaken)
{
stepsTaken = 0;
DateTime min = from < to ? from : to;
DateTime max = from > to ? from : to;
DateTime current = new DateTime(min.Ticks);
if (inclusive)
{
while (current <= max)
{
if (from <= to)
{
current = AddToDateTime(current, dateTimeStep);
}
else
{
current = RemoveFromDateTime(current, dateTimeStep);
}
stepsTaken++;
}
}
else
{
while (current < max)
{
if (from < to)
{
current = AddToDateTime(current, dateTimeStep);
}
else
{
current = RemoveFromDateTime(current, dateTimeStep);
}
stepsTaken++;
}
}
return(current);
}
public static DateTime RoundDateTimeTo(DateTime dt, DateTimeStep dateTimeStep)
{
if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Second)
{
return(new DateTime((long)Math.Floor((double)(dt.Ticks / TimeSpan.FromSeconds(dateTimeStep.DateTimeStepValue).Ticks)) * TimeSpan.FromSeconds(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Minute)
{
return(new DateTime((long)Math.Floor((double)(dt.Ticks / TimeSpan.FromMinutes(dateTimeStep.DateTimeStepValue).Ticks)) * TimeSpan.FromMinutes(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Hour)
{
return(new DateTime((long)Math.Floor((double)(dt.Ticks / TimeSpan.FromHours(dateTimeStep.DateTimeStepValue).Ticks)) * TimeSpan.FromHours(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Day)
{
return(new DateTime((long)Math.Floor((double)(dt.Ticks / TimeSpan.FromDays(dateTimeStep.DateTimeStepValue).Ticks)) * TimeSpan.FromDays(dateTimeStep.DateTimeStepValue).Ticks));
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Month)
{
if (dateTimeStep.DateTimeStepValue == 1)
{
return(new DateTime(dt.Year, dt.Month, 1));
}
else
{
var ttt = (int)(Math.Floor((dt.Month - 1) / dateTimeStep.DateTimeStepValue) * dateTimeStep.DateTimeStepValue) + 1;
return(new DateTime(dt.Year, (int)(Math.Floor((dt.Month - 1) / dateTimeStep.DateTimeStepValue) * dateTimeStep.DateTimeStepValue) + 1, 1));
}
}
else if (dateTimeStep.DateTimeStepGranularity == DateTimeStepGranularity.Year)
{
return(new DateTime(dt.Year, 1, 1));
}
else
{
return(DateTime.Now);
}
}
public static DateTime RoundDateTimeTo(long ticks, DateTimeStep dateTimeStep)
{
return(RoundDateTimeTo(new DateTime(ticks), dateTimeStep));
}
public static long[] GetDataTimeExtent(double min, double max, double m, out DateTimeStep dateTimeStep)
{
return(GetDataTimeExtent(new DateTime((long)min), new DateTime((long)max), m, out dateTimeStep));
}
public static string GetLabel(double ticks, DateTimeStep dateTimeStep)
{
return(GetLabel(new DateTime((long)ticks), dateTimeStep));
}
public static DateTime AddToDateTime(double ticks, DateTimeStep dateTimeStep)
{
return(AddToDateTime(new DateTime((long)ticks), dateTimeStep));
}
public static DateTime RemoveFromDateTime(double ticks, DateTimeStep dateTimeStep)
{
return(RemoveFromDateTime(new DateTime((long)ticks), dateTimeStep));
}
public static DateTime IncludeDateTime(double from, double to, DateTimeStep dateTimeStep, bool inclusive, out int stepsTaken)
{
return(IncludeDateTime(new DateTime((long)from), new DateTime((long)to), dateTimeStep, inclusive, out stepsTaken));
}