/**
* Checks to see if the first data point has a datetime before, after or equal to the second data point.
*
* @param TwlDataPoint $dataPoint1 The first point to compare.
* @param TwlDataPoint $dataPoint2 The second point to compare.
*
* @return int -1 if DP1<DP2, 0 if DP1=DP2, 1 if DP1>DP2.
*/
public static final function compareDataPointTime(TwlDataPoint $dataPoint1, TwlDataPoint $dataPoint2)
{
if ($dataPoint1->getTimestamp() < $dataPoint2->getTimestamp()) {
return -1;
} elseif ($dataPoint1->getTimestamp() > $dataPoint2->getTimestamp()) {
return 1;
} else {
return 0;
}
}
