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package tim.prune.function.comparesegments;
import tim.prune.data.DataPoint;
import tim.prune.data.Timestamp;
/**
* Hold a running summary of the current segment and its validity for the comparison function
*/
public class SegmentSummary
{
private boolean _valid = true;
private int _pointCount = 0;
private final int _startIndex;
private final Timestamp _startTimestamp;
private DataPoint _latestPoint = null;
private double _totalRadians = 0.0;
SegmentSummary(int inStartIndex, DataPoint inPoint)
{
_startIndex = inStartIndex;
_startTimestamp = inPoint == null ? null : inPoint.getTimestamp();
addPoint(inPoint);
}
/** Add a point to the segment */
public void addPoint(DataPoint inPoint)
{
if (inPoint == null || !inPoint.isValid() || !inPoint.hasTimestamp())
{
_valid = false;
return;
}
if (_latestPoint != null)
{
_totalRadians += DataPoint.calculateRadiansBetween(_latestPoint, inPoint);
_valid = _valid && !inPoint.getTimestamp().isBefore(_latestPoint.getTimestamp());
}
_latestPoint = inPoint;
_pointCount++;
}
public boolean isValid() {
return _valid && _pointCount > 1;
}
public int getPointCount() {
return _pointCount;
}
public int getStartIndex() {
return _startIndex;
}
public Timestamp getStartTimestamp() {
return _startTimestamp;
}
public long getDurationInSeconds()
{
if (_latestPoint != null && _latestPoint.hasTimestamp()) {
return _latestPoint.getTimestamp().getSecondsSince(_startTimestamp);
}
return 0L;
}
public double getDistanceInRadians() {
return _totalRadians;
}
}
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