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refs #925 Animate landing gear by linear interpolation.

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This commit is contained in:
Mathew Sutcliffe
2017-03-31 23:45:28 +01:00
parent 2f02cd30d9
commit 65ac945281
2 changed files with 14 additions and 1 deletions
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13
src/xbus/traffic.cpp
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@@ -281,7 +281,7 @@ namespace XBus
const auto surfaces = std::make_pair(relativeTime + QDateTime::currentMSecsSinceEpoch(), [ = ](Plane *plane)
{
plane->hasSurfaces = true;
plane->surfaces.gearPosition = gear;
plane->targetGearPosition = gear;
plane->surfaces.flapRatio = flap;
plane->surfaces.spoilerRatio = spoiler;
plane->surfaces.speedBrakeRatio = speedBrake;
@@ -381,9 +381,20 @@ namespace XBus
const auto currentTime = QDateTime::currentMSecsSinceEpoch();
while (! plane->pendingSurfaces.isEmpty() && plane->pendingSurfaces.front().first <= currentTime)
{
//! \todo if gear is currently retracted, look ahead and pull gear position from pendingSurfaces up to 5 seconds in the future
plane->pendingSurfaces.front().second(plane);
plane->pendingSurfaces.pop_front();
}
if (plane->surfaces.gearPosition != plane->targetGearPosition)
{
// interpolate gear position
constexpr float gearMoveTimeMs = 5000;
const auto gearPositionDiffRemaining = plane->targetGearPosition - plane->surfaces.gearPosition;
const auto gearPositionDiffThisFrame = (currentTime - plane->prevSurfacesLerpTime) / gearMoveTimeMs;
plane->surfaces.gearPosition += std::copysign(gearPositionDiffThisFrame, gearPositionDiffRemaining);
plane->surfaces.gearPosition = qBound(0.0f, plane->surfaces.gearPosition, 1.0f);
}
plane->prevSurfacesLerpTime = currentTime;
const auto io_surfaces = static_cast<XPMPPlaneSurfaces_t *>(io_data);
if (memcmpPayload(io_surfaces, &plane->surfaces))

2
src/xbus/traffic.h
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@@ -141,6 +141,8 @@ namespace XBus
BlackMisc::Simulation::CInterpolationHints hints();
XPMPPlaneSurfaces_t surfaces;
QVector<std::pair<qint64, std::function<void(Plane *)>>> pendingSurfaces;
float targetGearPosition = 0;
qint64 prevSurfacesLerpTime = 0;
XPMPPlaneRadar_t xpdr;
Plane(void *id_, QString callsign_, QString aircraftIcao_, QString airlineIcao_, QString livery_);
};