public static void piLoadTrend(TrendSeries trend, string tagName,
LoadFlags flags, DateTime aBeg, DateTime aEnd,
out float zero, out float span, int interval = 10, bool autoRange = false)
{
DateTime dtNow = DateTime.Now;
Season daylightOffset = PIBUtils.GetDaylightOffset(dtNow);
aBeg.AddHours(-PIBUtils.GetOffset(daylightOffset, PIBUtils.GetDaylightOffset(aBeg)));
aEnd.AddHours(-PIBUtils.GetOffset(daylightOffset, PIBUtils.GetDaylightOffset(aEnd)));
int tagNum;
int res = PIAPI32.pipt_findpointex(tagName, out tagNum);
if (autoRange)
{
TimeSpan ts = (aEnd - aBeg);
double d = ts.TotalHours;
if (d >= 24 * 7)
{
interval *= 9;
}
else if (d >= 24)
{
interval *= 3;
}
else if (d >= 12)
{
interval *= 2;
}
}
if (res == 0)
{
_PIvaluetype elem;
PIAPI32.pipt_pointtypex(tagNum, out elem);
PIAPI32.pipt_scale(tagNum, out zero, out span);
DateTime tm = aBeg;
int cnt = 0;
while (tm <= aEnd && (tm <= dtNow))
{
cnt++;
tm = tm.AddSeconds(interval);
}
try {
float[] rvals = new float[cnt * 4];
int[] times = new int[cnt * 4];
int[] istats = new int[cnt * 4];
try {
tm = aBeg;
cnt = 0;
while (tm <= aEnd && tm <= dtNow)
{
int timedate = PIBUtils.TimeToPITime(tm);
times[cnt] = timedate;
cnt++;
tm = tm.AddSeconds(interval);
}
if (cnt != 0)
{
switch (PIBUtils.ArchiveRetrievalMode)
{
case PIArchiveRetrievalMode.armTimeInterpolated:
res = PIAPI32.piar_timedvaluesex(tagNum, ref cnt, ref times, out rvals, out istats, 0);
break;
case PIArchiveRetrievalMode.armInterpolated:
res = PIAPI32.piar_interpvaluesex(tagNum, ref cnt, ref times, out rvals, out istats);
break;
case PIArchiveRetrievalMode.armCompressed:
res = PIAPI32.piar_compvaluesex(tagNum, ref cnt, ref times, out rvals, out istats, 0);
break;
}
if (res == 0)
{
for (int i = 0; i < cnt; i++)
{
double rval = (double)rvals[i];
DateTime dtx = PIBUtils.PITimeToTime(times[i]);
dtx.AddHours(+PIBUtils.GetOffset(daylightOffset, PIBUtils.GetDaylightOffset(dtx)));
int num14 = istats[i];
if (Array.IndexOf(PIBUtils.PIFloatTypes, elem) >= 0)
{
bool valid = true;
if (num14 != 0)
{
if ((flags & LoadFlags.lfValidity) == (LoadFlags)0)
{
continue;
}
valid = false;
}
if ((flags & LoadFlags.lfNegativeCut) != (LoadFlags)0 && rval < 0.0)
{
rval = 0.0;
}
trend.AddValue(dtx.ToOADate(), rval, valid);
}
else if (Array.IndexOf(PIBUtils.PIIntTypes, elem) >= 0)
{
rval = (double)num14;
trend.AddValue(dtx.ToOADate(), rval, true);
}
}
}
}
} finally {
}
} catch (Exception ex) {
PIBUtils.ShowError("Error type #44: " + ex.Message);
}
}
else
{
zero = 0;
span = 0;
}
}