Opc.Ua.Server.AggregateCalculator.GetValuesWithSimpleBounds C# (CSharp) Method

        protected List<DataValue> GetValuesWithSimpleBounds(TimeSlice slice)
        {
            // check if slice is beyond end of available data.
            if (CompareTimestamps(slice.StartTime, m_values.Last) > 0 || CompareTimestamps(slice.EndTime, m_values.First) < 0)
            {
                return null;
            }

            List<DataValue> values = new List<DataValue>();

            // add the start point.
            DataValue startBound = GetSimpleBound(slice.StartTime, slice);

            if (startBound != null)
            {
                values.Add(startBound);
            }

            // initialize slice from value list.
            for (LinkedListNode<DataValue> ii = slice.Begin; ii != null; ii = ii.Next)
            {
                if (CompareTimestamps(slice.EndTime, ii) <= 0)
                {
                    break;
                }

                if (CompareTimestamps(slice.StartTime, ii) < 0)
                {
                    values.Add(ii.Value);
                }
            }

            // add the end point.
            DataValue endBound = GetSimpleBound(slice.EndTime, slice);

            if (endBound != null)
            {
                values.Add(endBound);
            }

            return values;
        }