private static BMRecordCurrent GetAverageValue(List <BMRecordCurrent> records, int start, int bucketSize)
{
if (start >= records.Count || bucketSize <= 0)
{
return(new BMRecordCurrent());
}
BMRecordCurrent rec = new BMRecordCurrent(records[start]);
if (bucketSize == 1)
{
return(rec);
}
int count = 1;
for (int i = start + 1; i < records.Count && i < (start + bucketSize); i++, count++)
{
rec += records[i];
}
rec /= count;
TimeSpan interval = records[start + count - 1].Date - records[start].Date;
TimeSpan halfInterval = TimeSpan.FromMilliseconds(interval.TotalMilliseconds / 2);
rec.Date = records[start].Date + halfInterval;
if (interval.TotalSeconds < 1.0)
{
Log.d("Interval is too small: idx: {0} count: {1} time: {2}", start, bucketSize, interval);
}
return(rec);
}
public static BMRecordCurrent operator /(BMRecordCurrent r1, double factor)
{
BMRecordCurrent rec = new BMRecordCurrent(r1);
rec.Temperature /= factor;
rec.AirHumidity /= factor;
rec.AirPressure /= factor;
return(rec);
}
public static BMRecordCurrent operator +(BMRecordCurrent r1, BMRecordCurrent r2)
{
BMRecordCurrent rec = new BMRecordCurrent(r2); //later one for time, battery level etc.
rec.Temperature += r1.Temperature;
rec.AirHumidity += r1.AirHumidity;
rec.AirPressure += r1.AirPressure;
return(rec);
}
//empty record for average, min, max
public BMRecordCurrent(BMRecordCurrent r = null) : base(r)
{
if (r == null)
{
return;
}
BatteryLevel = r.BatteryLevel;
LoggingInterval = r.LoggingInterval;
numBreach = r.numBreach;
_mode = r._mode;
}
public BMRecordCurrent AddRecord(BluetoothDevice device, short rssi, DateTime recordDate, byte[] data)
{
BMRecordCurrent record = new BMRecordCurrent(device, rssi, recordDate, data);
lock (Records)
{
BMRecordCurrent last = Records.LastOrDefault();
if (last != null && last == record) //not changed - update
{
Records[Records.Count - 1] = record;
}
else //new record
{
if (last == null)
{
last = record;
}
Records.Add(record);
}
}
return(record);
}
//assuming all DB are sorted by date
public static List <BMRecordCurrent> MergeLinear(List <BMRecordCurrent> r1, List <BMRecordCurrent> r2)
{
if ((r1 == null || r1.Count == 0) && (r2 == null || r2.Count == 0))
{
return(new List <BMRecordCurrent>());
}
if (r1 == null || r1.Count == 0)
{
return(new List <BMRecordCurrent>(r2));
}
if (r2 == null || r2.Count == 0)
{
return(new List <BMRecordCurrent>(r1));
}
List <BMRecordCurrent> records = new List <BMRecordCurrent>(r1.Count);
BMRecordCurrent current = null, last = null;
int i1 = 0, i2 = 0;
while (i1 < r1.Count || i2 < r2.Count)
{
if (i1 < r1.Count && i2 < r2.Count)
{
if (r1[i1].Date == r2[i2].Date)
{
current = r1[i1];
i1++;
i2++;
}
else if (r1[i1].Date < r2[i2].Date)
{
current = r1[i1];
i1++;
}
else
{
current = r2[i2];
i2++;
}
}
else if (i1 < r1.Count)
{
current = r1[i1];
i1++;
}
else if (i2 < r2.Count)
{
current = r2[i2];
i2++;
}
if (last == null || current.Date != last.Date)
{
records.Add(current);
last = current;
}
}
return(records);
}