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Use new dataref to compensate for XP12 temperature effect on altitude

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This commit is contained in:
Mat Sutcliffe
2022-10-30 14:01:28 +00:00
parent ec54be653d
commit b3e312e1d3
7 changed files with 54 additions and 3 deletions
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24
src/plugins/simulator/xplane/simulatorxplane.cpp
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@@ -322,14 +322,26 @@ namespace BlackSimPlugin::XPlane
m_serviceProxy->getOwnAircraftXpdrAsync(&m_xplaneData);
m_serviceProxy->getAllWheelsOnGroundAsync(&m_xplaneData.onGroundAll);
m_serviceProxy->getHeightAglMAsync(&m_xplaneData.heightAglM);
m_serviceProxy->getPressureAltitudeFtAsync(&m_xplaneData.pressureAltitudeFt);
CAircraftSituation situation;
situation.setPosition({ m_xplaneData.latitudeDeg, m_xplaneData.longitudeDeg, 0 });
const CAltitude altitude { m_xplaneData.altitudeM, CAltitude::MeanSeaLevel, CLengthUnit::m() };
situation.setAltitude(altitude);
const CPressure seaLevelPressure({ m_xplaneData.seaLevelPressureInHg, CPressureUnit::inHg() });
const CAltitude pressureAltitude(altitude.toPressureAltitude(seaLevelPressure));
situation.setPressureAltitude(pressureAltitude);
if (std::isnan(m_xplaneData.pressureAltitudeFt))
{
situation.setAltitude(altitude);
situation.setPressureAltitude(pressureAltitude);
}
else
{
const CAltitude pressureAltitudeXP12(m_xplaneData.pressureAltitudeFt, CAltitude::MeanSeaLevel, CAltitude::PressureAltitude, CLengthUnit::ft());
m_altitudeDelta = pressureAltitude - pressureAltitudeXP12;
situation.setAltitude({ altitude - m_altitudeDelta, CAltitude::MeanSeaLevel });
situation.setPressureAltitude(pressureAltitudeXP12);
}
situation.setHeading({ m_xplaneData.trueHeadingDeg, CHeading::True, CAngleUnit::deg() });
situation.setPitch({ m_xplaneData.pitchDeg, CAngleUnit::deg() });
situation.setBank({ m_xplaneData.rollDeg, CAngleUnit::deg() });
@@ -1076,7 +1088,13 @@ namespace BlackSimPlugin::XPlane
const CInterpolationResult result = xplaneAircraft.getInterpolation(currentTimestamp, setup, aircraftNumber++);
if (result.getInterpolationStatus().hasValidSituation())
{
const CAircraftSituation interpolatedSituation(result);
CAircraftSituation interpolatedSituation(result);
// adjust altitude to compensate for XP12 temperature effect
const CLength relativeAltitude = interpolatedSituation.geodeticHeight() - getOwnAircraftPosition().geodeticHeight();
const double altitudeDeltaWeight = 2 - qBound(3000.0, relativeAltitude.abs().value(CLengthUnit::ft()), 6000.0) / 3000;
const CLength alt = interpolatedSituation.getAltitude() + m_altitudeDelta * altitudeDeltaWeight;
interpolatedSituation.setAltitude({ alt, interpolatedSituation.getAltitude().getReferenceDatum() });
// update situation
if (updateAllAircraft || !this->isEqualLastSent(interpolatedSituation))

2
src/plugins/simulator/xplane/simulatorxplane.h
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@@ -75,6 +75,7 @@ namespace BlackSimPlugin::XPlane
double latitudeDeg = 0; //!< Longitude [deg]
double longitudeDeg = 0; //!< Latitude [deg]
double altitudeM = 0; //!< Altitude [m]
double pressureAltitudeFt = 0; //!< Pressure altitude [ft, XP12]
double heightAglM = 0; //!< Height AGL [m]
double groundspeedMs = 0; //!< Ground speed [m/s]
double pitchDeg = 0; //!< Pitch [deg]
@@ -283,6 +284,7 @@ namespace BlackSimPlugin::XPlane
BlackMisc::Simulation::CSimulatedAircraftList m_aircraftAddedFailed; //!< aircraft for which adding failed
BlackMisc::PhysicalQuantities::CLength m_minSuspicousTerrainProbe { nullptr }; //!< min. distance of "failed" (suspicious) terrain probe requests
XPlaneData m_xplaneData; //!< XPlane data
BlackMisc::PhysicalQuantities::CLength m_altitudeDelta; //!< XP12 altitude difference cause by temperature effect
// statistics
qint64 m_statsAddMaxTimeMs = -1;

9
src/plugins/simulator/xplane/xswiftbusserviceproxy.cpp
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@@ -409,6 +409,15 @@ namespace BlackSimPlugin::XPlane
m_dbusInterface->callDBusAsync(QLatin1String("getAltitudeMslM"), setterCallback(o_altitude));
}
double CXSwiftBusServiceProxy::getPressureAltitudeFt() const
{
return m_dbusInterface->callDBusRet<double>(QLatin1String("getPressureAltitudeFt"));
}
void CXSwiftBusServiceProxy::getPressureAltitudeFtAsync(double* o_altitude)
{
m_dbusInterface->callDBusAsync(QLatin1String("getPressureAltitudeFt"), setterCallback(o_altitude));
}
double CXSwiftBusServiceProxy::getHeightAglM() const
{
return m_dbusInterface->callDBusRet<double>(QLatin1String("getHeightAglM"));

6
src/plugins/simulator/xplane/xswiftbusserviceproxy.h
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@@ -239,6 +239,12 @@ namespace BlackSimPlugin::XPlane
void getAltitudeMslMAsync(double *o_altitude);
//! @}
//! \copydoc XSwiftBus::CService::getPressureAltitudeFt
//! @{
double getPressureAltitudeFt() const;
void getPressureAltitudeFtAsync(double *o_altitude);
//! @}
//! \copydoc XSwiftBus::CService::getHeightAglM
//! @{
double getHeightAglM() const;