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Use onGround flag only when ground speed is low

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OnGround flag is not synchronized with positions and causes jumps
during right before takeoff and after landing. By adding a threshold
currently being 20 kts, we move the jump into an area when the aircraft
is still leveled.
This commit is contained in:
Roland Winklmeier
2016-12-16 20:51:13 +01:00
committed by Mathew Sutcliffe
parent d46318be5e
commit 58c816197e
2 changed files with 8 additions and 2 deletions
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2
src/blackmisc/aviation/aircraftsituation.h
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@@ -99,7 +99,7 @@ namespace BlackMisc
virtual BlackMisc::Geo::CLongitude longitude() const override { return this->m_position.longitude(); }
//! Guess if aircraft is "on ground"
virtual bool isOnGroundGuessed() const;
bool isOnGroundGuessed() const;
//! \copydoc Geo::ICoordinateGeodetic::geodeticHeight
const BlackMisc::Aviation::CAltitude &geodeticHeight() const override { return this->m_position.geodeticHeight(); }

8
src/plugins/simulator/fsx/simulatorfsx.cpp
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@@ -846,7 +846,13 @@ namespace BlackSimPlugin
if (partsStatus.isSupportingParts() && !parts.isEmpty())
{
// we have parts, and use the closest ground
isOnGround = parts.front().isOnGround();
// \fixme onGround flag is not synchronized with positions and causes jumps during takeoff/landing.
// We need to find a better way to synchronize both. Until then, use it for a very small speed range only.
// This covers taxiing aircraft as well as a hovering helicopter.
double groundSpeedKnots = interpolatedSituation.getGroundSpeed().value(CSpeedUnit::kts());
if (groundSpeedKnots < 50) { isOnGround = parts.front().isOnGround(); }
else { isOnGround = interpolatedSituation.isOnGroundGuessed(); }
}
else
{