private bool CheckAlarm(Channel channel, TrendingDataPoint trendingPoint, AlarmRangeLimit alarmRangeLimit)
{
double highLimit = 0.0D;
double lowLimit = 0.0D;
bool highValid = true;
bool lowValid = true;
double perUnitValue = channel.PerUnitValue ?? 1.0D;
double factor = alarmRangeLimit.PerUnit ? perUnitValue : 1.0D;
if ((object)alarmRangeLimit.High != null)
{
highLimit = factor * alarmRangeLimit.High.GetValueOrDefault();
highValid = Convert.ToBoolean(alarmRangeLimit.RangeInclusive) ^ (trendingPoint.Value <= highLimit);
}
if ((object)alarmRangeLimit.Low != null)
{
lowLimit = factor * alarmRangeLimit.Low.GetValueOrDefault();
lowValid = Convert.ToBoolean(alarmRangeLimit.RangeInclusive) ^ (trendingPoint.Value >= lowLimit);
}
return(!lowValid || !highValid);
}
private Tuple <int, SeriesID, DateTime> GetKey(TrendingDataPoint trendingDataPoint)
{
return(Tuple.Create(trendingDataPoint.ChannelID, trendingDataPoint.SeriesID, trendingDataPoint.Timestamp));
}