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Ref T275, new function to estimate ground elevation and some provider functions

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* added "averageElevationOfNonMovingAircraft". Idea: aircraft in the vicinity not moving or on ground likely have the same airport elevation
* added "isWithinRange"
* added "latestRemoteAircraftSituations" / "remoteAircraftSituation" in provider
This commit is contained in:
Klaus Basan
2018-06-18 03:21:15 +02:00
parent d864789890
commit 2625c3fb6b
11 changed files with 183 additions and 42 deletions
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25
src/blackmisc/aviation/aircraftsituationlist.cpp
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@@ -117,6 +117,7 @@ namespace BlackMisc
bool CAircraftSituationList::extrapolateElevation(const CAircraftSituationChange &change)
{
if (this->size() < 3) { return false; }
Q_ASSERT_X(m_tsAdjustedSortHint == CAircraftSituationList::AdjustedTimestampLatestFirst, Q_FUNC_INFO, "Need latest first");
const CAircraftSituation old = (*this)[1];
const CAircraftSituation older = (*this)[2];
return this->front().extrapolateElevation(old, older, change);
@@ -520,7 +521,7 @@ namespace BlackMisc
return CAltitudePair(CAltitude(deltaFt.first, CAltitude::MeanSeaLevel, CAltitude::defaultUnit()), CAltitude(deltaFt.second, CAltitude::MeanSeaLevel, CAltitude::defaultUnit()));
}
int CAircraftSituationList::transferElevationForward(const CLength radius)
int CAircraftSituationList::transferElevationForward(const CLength &radius)
{
if (this->size() < 2) { return 0; }
Q_ASSERT_X(m_tsAdjustedSortHint == CAircraftSituationList::AdjustedTimestampLatestFirst, Q_FUNC_INFO, "need latest first");
@@ -533,5 +534,27 @@ namespace BlackMisc
}
return c;
}
CElevationPlane CAircraftSituationList::averageElevationOfNonMovingAircraft(const CAircraftSituation &reference, const CLength &range, int minValues) const
{
if (this->size() < minValues) { return CElevationPlane::null(); } // no change to succeed
QList<double> valuesInFt;
for (const CAircraftSituation &situation : *this)
{
if (situation.getGroundElevationInfo() != CAircraftSituation::FromProvider) { continue; }
const bool canUse = !situation.isMoving() || (situation.isOnGroundFromNetwork() || situation.isOnGroundFromParts());
if (!canUse) { continue; }
if (!situation.isWithinRange(reference, range)) { continue; }
const double elvFt = situation.getGroundElevationPlane().getAltitude().value(CLengthUnit::ft());
valuesInFt.push_back(elvFt);
}
if (valuesInFt.size() < minValues) { return CElevationPlane::null(); }
static const double MaxDevFt = CAircraftSituationChange::allowedAltitudeDeviation().value(CLengthUnit::ft());
const QPair<double, double> elvStdDevMean = CMathUtils::standardDeviationAndMean(valuesInFt);
if (elvStdDevMean.first > MaxDevFt) { return CElevationPlane::null(); }
return CElevationPlane(reference, elvStdDevMean.second, CElevationPlane::singlePointRadius());
}
} // namespace
} // namespace