private void assignSpeedEvaluation(SpeedEvaluation val)
{
speedInKmPerHour = val.speed;
minSpeedInKmPerHour = val.minSpeed;
maxSpeedInKmPerHour = val.maxSpeed;
confidence = val.confidence;
distance = val.distance;
timeframe = val.timeframe;
distanceAccuracy = val.distanceAccuracy;
skipped = val.skipped;
return;
}
void UpdateSpeed()
{
heuristic = Heuristic.TWO_POINT;
rawDistance = DistInKm(forelast, last);
rawSpeed = SpeedInKmpH(rawDistance, TimeFrameInSeconds(forelast, last));
SpeedEvaluation sel = new SpeedEvaluation();
sel.minSpeed = 1f;
sel.maxSpeed = -1f;
for (int i = record.Count - 2; i >= 0; i--)
{
SpeedEvaluation val = new SpeedEvaluation(record[i], last, (record.Count - 2) - i);
if (val.confidence > sel.confidence)
{
sel = val;
}
if (sel.confidence >= minConfidence)
{
break;
}
}
assignSpeedEvaluation(sel);
// Typically 0 confidence on speed readings
// Signals overlapping samples as produced when the device
// is not in motion.
if (sel.confidence <= 0f)
{
speedInKmPerHour = 0f;
heuristic = Heuristic.NO_CONFIDENCE;
}
}
