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Compute smoothed coordinates

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This commit is contained in:
Dan Paulat 2024-12-01 00:39:12 -06:00
parent 13a015cd5f
commit 84f0003bef
1 changed files with 73 additions and 9 deletions
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82
scwx-qt/source/scwx/qt/view/level2_product_view.cpp
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@ -106,7 +106,8 @@ public:
};
void ComputeCoordinates(
const std::shared_ptr<wsr88d::rda::ElevationScan>& radarData);
const std::shared_ptr<wsr88d::rda::ElevationScan>& radarData,
bool smoothingEnabled);
void SetProduct(const std::string& productName);
void SetProduct(common::Level2Product product);
@ -528,6 +529,9 @@ void Level2ProductView::ComputeSweep()
return;
}
// TODO: Where does this come from?
bool smoothingEnabled = false;
logger_->debug("Computing Sweep");
std::size_t radials = radarData->crbegin()->first + 1;
@ -546,7 +550,7 @@ void Level2ProductView::ComputeSweep()
vertexRadials =
std::min<std::size_t>(vertexRadials, common::MAX_0_5_DEGREE_RADIALS);
p->ComputeCoordinates(radarData);
p->ComputeCoordinates(radarData, smoothingEnabled);
const std::vector<float>& coordinates = p->coordinates_;
@ -818,7 +822,8 @@ void Level2ProductView::ComputeSweep()
}
void Level2ProductView::Impl::ComputeCoordinates(
const std::shared_ptr<wsr88d::rda::ElevationScan>& radarData)
const std::shared_ptr<wsr88d::rda::ElevationScan>& radarData,
bool smoothingEnabled)
{
logger_->debug("ComputeCoordinates()");
@ -858,6 +863,14 @@ void Level2ProductView::Impl::ComputeCoordinates(
auto radials = boost::irange<std::uint32_t>(0u, numRadials);
auto gates = boost::irange<std::uint32_t>(0u, numRangeBins);
const float gateRangeOffset = (smoothingEnabled) ?
// Center of the first gate is half the gate
// size distance from the radar site
0.5f :
// Far end of the first gate is the gate
// size distance from the radar site
1.0f;
std::for_each(
std::execution::par_unseq,
radials.begin(),
@ -867,7 +880,7 @@ void Level2ProductView::Impl::ComputeCoordinates(
units::degrees<float> angle {};
auto radialData = radarData->find(radial);
if (radialData != radarData->cend())
if (radialData != radarData->cend() && !smoothingEnabled)
{
angle = radialData->second->azimuth_angle();
}
@ -878,8 +891,42 @@ void Level2ProductView::Impl::ComputeCoordinates(
auto prevRadial2 = radarData->find(
(radial >= 2) ? radial - 2 : numRadials - (2 - radial));
if (prevRadial1 != radarData->cend() &&
prevRadial2 != radarData->cend())
if (radialData != radarData->cend() &&
prevRadial1 != radarData->cend() && smoothingEnabled)
{
const units::degrees<float> currentAngle =
radialData->second->azimuth_angle();
const units::degrees<float> prevAngle =
prevRadial1->second->azimuth_angle();
// No wrapping required since angle is only used for geodesic
// calculation
const units::degrees<float> deltaAngle =
currentAngle - prevAngle;
// Delta scale is half the delta angle to reach the center of the
// bin, because smoothing is enabled
constexpr float deltaScale = 0.5f;
angle = currentAngle + deltaAngle * deltaScale;
}
else if (radialData != radarData->cend() && smoothingEnabled)
{
const units::degrees<float> currentAngle =
radialData->second->azimuth_angle();
// Assume a half degree delta if there aren't enough angles
// to determine a delta angle
constexpr units::degrees<float> deltaAngle {0.5f};
// Delta scale is half the delta angle to reach the center of the
// bin, because smoothing is enabled
constexpr float deltaScale = 0.5f;
angle = currentAngle + deltaAngle * deltaScale;
}
else if (prevRadial1 != radarData->cend() &&
prevRadial2 != radarData->cend())
{
const units::degrees<float> prevAngle1 =
prevRadial1->second->azimuth_angle();
@ -890,7 +937,15 @@ void Level2ProductView::Impl::ComputeCoordinates(
// calculation
const units::degrees<float> deltaAngle = prevAngle1 - prevAngle2;
angle = prevAngle1 + deltaAngle;
const float deltaScale =
(smoothingEnabled) ?
// Delta scale is 1.5x the delta angle to reach the center
// of the next bin, because smoothing is enabled
1.5f :
// Delta scale is 1.0x the delta angle
1.0f;
angle = prevAngle1 + deltaAngle * deltaScale;
}
else if (prevRadial1 != radarData->cend())
{
@ -901,7 +956,15 @@ void Level2ProductView::Impl::ComputeCoordinates(
// to determine a delta angle
constexpr units::degrees<float> deltaAngle {0.5f};
angle = prevAngle1 + deltaAngle;
const float deltaScale =
(smoothingEnabled) ?
// Delta scale is 1.5x the delta angle to reach the center
// of the next bin, because smoothing is enabled
1.5f :
// Delta scale is 1.0x the delta angle
1.0f;
angle = prevAngle1 + deltaAngle * deltaScale;
}
else
{
@ -917,7 +980,8 @@ void Level2ProductView::Impl::ComputeCoordinates(
{
const std::uint32_t radialGate =
radial * common::MAX_DATA_MOMENT_GATES + gate;
const float range = (gate + 1) * gateSize;
const float range =
(gate + gateRangeOffset) * gateSize;
const std::size_t offset = radialGate * 2;
double latitude;