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refs #852 Fix for problem with landing aircraft with interim position updates.

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This commit is contained in:
Mathew Sutcliffe
2017-01-17 20:17:22 +00:00
parent a3212ab37d
commit e5d45b077d
1 changed files with 9 additions and 3 deletions
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12
src/blackmisc/simulation/interpolator.cpp
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@@ -67,12 +67,18 @@ namespace BlackMisc
const auto latestTakeoff = std::adjacent_find(partsOlder.begin(), partsOlder.end(), [](auto &&, auto && p) { return p.isOnGround(); });
const auto soonestLanding = std::find_if(partsNewer.begin(), partsNewer.end(), [](auto && p) { return p.isOnGround(); });
// our clairvoyance is limited by the time offset
const double significantPast = 5.0;
const double predictableFuture = soonestLanding == partsNewer.end() ? 5.0 : std::min(5.0, static_cast<double>(soonestLanding->getTimeOffsetMs()) / 1000.0);
const double secondsSinceTakeoff = latestTakeoff == partsOlder.end() ? 5.0 : (currentTimeMsSinceEpoch - latestTakeoff->getAdjustedMSecsSinceEpoch()) / 1000.0;
const double secondsUntilLanding = soonestLanding == partsNewer.end() ? 5.0 : (soonestLanding->getAdjustedMSecsSinceEpoch() - currentTimeMsSinceEpoch) / 1000.0;
const double secondsAirborne = std::min(secondsSinceTakeoff, secondsUntilLanding);
Q_ASSERT(secondsAirborne >= 0.0);
Q_ASSERT(secondsSinceTakeoff >= 0.0);
Q_ASSERT(secondsUntilLanding >= 0.0);
const double airborneFactor = std::min(secondsAirborne / 5.0, 1.0);
const double takeoffFactor = secondsSinceTakeoff / significantPast;
const double landingFactor = secondsUntilLanding / predictableFuture;
const double airborneFactor = std::min(std::min(takeoffFactor, landingFactor), 1.0);
currentParts.setOnGroundInterpolated(1.0 - smootherStep(airborneFactor));
return currentParts;
}