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pilotclient/src/blackmisc/simulation/interpolationlogger.cpp
Mat Sutcliffe a592bb2bbe Include style
2021-09-18 15:07:49 +01:00

602 lines
26 KiB
C++

/* Copyright (C) 2015
* swift project Community / Contributors
*
* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
* directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
* or distributed except according to the terms contained in the LICENSE file.
*/
#include "blackmisc/simulation/interpolationlogger.h"
#include "blackmisc/aviation/callsign.h"
#include "blackmisc/aviation/heading.h"
#include "blackmisc/geo/kmlutils.h"
#include "blackmisc/pq/angle.h"
#include "blackmisc/pq/speed.h"
#include "blackmisc/pq/units.h"
#include "blackmisc/pq/length.h"
#include "blackmisc/logmessage.h"
#include "blackmisc/worker.h"
#include "blackmisc/swiftdirectories.h"
#include "blackmisc/directoryutils.h"
#include "blackmisc/stringutils.h"
#include "blackconfig/buildconfig.h"
#include <QDateTime>
#include <QStringBuilder>
using namespace BlackConfig;
using namespace BlackMisc;
using namespace BlackMisc::Aviation;
using namespace BlackMisc::Geo;
using namespace BlackMisc::Math;
using namespace BlackMisc::PhysicalQuantities;
using namespace BlackMisc::Simulation;
namespace BlackMisc::Simulation
{
CInterpolationLogger::CInterpolationLogger(QObject *parent) :
QObject(parent)
{
this->setObjectName("CInterpolationLogger");
}
const QStringList &CInterpolationLogger::getLogCategories()
{
static const QStringList cats { CLogCategories::interpolator() };
return cats;
}
CWorker *CInterpolationLogger::writeLogInBackground(bool clearLog)
{
QList<SituationLog> situations;
QList<PartsLog> parts;
{
QReadLocker l(&m_lockSituations);
situations = m_situationLogs;
}
{
QReadLocker l(&m_lockParts);
parts = m_partsLogs;
}
QPointer<CInterpolationLogger> myself(this);
CWorker *worker = CWorker::fromTask(this, "WriteInterpolationLog", [situations, parts, myself, clearLog]()
{
const CStatusMessageList msg = CInterpolationLogger::writeLogFiles(situations, parts);
CLogMessage::preformatted(msg);
if (clearLog && myself) { myself->clearLog(); }
});
return worker;
}
QStringList CInterpolationLogger::getLatestLogFiles()
{
QStringList files({ "", "" });
const QString logDir = CSwiftDirectories::logDirectory();
QDir logs(logDir);
if (!logs.exists()) { return files; }
logs.setNameFilters(filePatterns());
const QStringList interpolations = logs.entryList(QStringList({filePatternInterpolationLog()}), QDir::NoFilter, QDir::Time);
if (!interpolations.isEmpty())
{
files[0] = CFileUtils::appendFilePaths(logDir, interpolations.first());
}
const QStringList parts = logs.entryList(QStringList({filePatternPartsLog()}), QDir::NoFilter, QDir::Time);
if (!parts.isEmpty())
{
files[1] = CFileUtils::appendFilePaths(logDir, parts.first());
}
return files;
}
QString CInterpolationLogger::getLogDirectory()
{
return CSwiftDirectories::logDirectory();
}
CStatusMessageList CInterpolationLogger::writeLogFiles(const QList<SituationLog> &interpolation, const QList<PartsLog> &parts)
{
if (parts.isEmpty() && interpolation.isEmpty()) { return CStatusMessage(static_cast<CInterpolationLogger *>(nullptr)).warning(u"No data for log"); }
static const QString html = QStringLiteral("Entries: %1\n\n%2");
const QString htmlTemplate = CFileUtils::readFileToString(CSwiftDirectories::htmlTemplateFilePath());
CStatusMessageList msgs;
const QString ts = QDateTime::currentDateTimeUtc().toString("yyyyMMddhhmmss");
const QString htmlInterpolation = CInterpolationLogger::getHtmlInterpolationLog(interpolation);
if (!htmlInterpolation.isEmpty())
{
QString file = filePatternInterpolationLog();
file.remove('*');
const QString fn = CFileUtils::appendFilePaths(CSwiftDirectories::logDirectory(), QStringLiteral("%1 %2").arg(ts, file));
const bool s = CFileUtils::writeStringToFile(htmlTemplate.arg(html.arg(interpolation.size()).arg(htmlInterpolation)), fn);
msgs.push_back(CInterpolationLogger::logStatusFileWriting(s, fn));
}
const QString htmlParts = CInterpolationLogger::getHtmlPartsLog(parts);
if (!htmlParts.isEmpty())
{
QString file = filePatternPartsLog();
file.remove('*');
const QString fn = CFileUtils::appendFilePaths(CSwiftDirectories::logDirectory(), QStringLiteral("%1 %2").arg(ts, file));
const bool s = CFileUtils::writeStringToFile(htmlTemplate.arg(html.arg(parts.size()).arg(htmlParts)), fn);
msgs.push_back(CInterpolationLogger::logStatusFileWriting(s, fn));
}
QString kml = CKmlUtils::wrapAsKmlDocument(CInterpolationLogger::getKmlChangedSituations(interpolation));
if (!kml.isEmpty())
{
const QString fn = CFileUtils::appendFilePaths(CSwiftDirectories::logDirectory(), QStringLiteral("%1_changedSituations.kml").arg(ts));
const bool s = CFileUtils::writeStringToFile(kml, fn);
msgs.push_back(CInterpolationLogger::logStatusFileWriting(s, fn));
}
kml = CKmlUtils::wrapAsKmlDocument(CInterpolationLogger::getKmlInterpolatedSituations(interpolation));
if (!kml.isEmpty())
{
const QString fn = CFileUtils::appendFilePaths(CSwiftDirectories::logDirectory(), QStringLiteral("%1_interpolatedSituations.kml").arg(ts));
const bool s = CFileUtils::writeStringToFile(kml, fn);
msgs.push_back(CInterpolationLogger::logStatusFileWriting(s, fn));
}
kml = CKmlUtils::wrapAsKmlDocument(CInterpolationLogger::getKmlElevations(interpolation));
if (!kml.isEmpty())
{
const QString fn = CFileUtils::appendFilePaths(CSwiftDirectories::logDirectory(), QStringLiteral("%1_elevations.kml").arg(ts));
const bool s = CFileUtils::writeStringToFile(kml, fn);
msgs.push_back(CInterpolationLogger::logStatusFileWriting(s, fn));
}
return msgs;
}
CStatusMessage CInterpolationLogger::logStatusFileWriting(bool success, const QString &fileName)
{
return success ?
CStatusMessage(static_cast<CInterpolationLogger *>(nullptr)).info(u"Written log file '%1'") << fileName :
CStatusMessage(static_cast<CInterpolationLogger *>(nullptr)).error(u"Failed to write log file '%1'") << fileName;
}
void CInterpolationLogger::logInterpolation(const SituationLog &log)
{
QWriteLocker l(&m_lockSituations);
m_situationLogs.push_back(log);
if (m_situationLogs.size() > m_maxSituations)
{
m_situationLogs.removeFirst();
}
}
void CInterpolationLogger::logParts(const PartsLog &log)
{
QWriteLocker l(&m_lockParts);
m_partsLogs.push_back(log);
}
void CInterpolationLogger::setMaxSituations(int max)
{
QReadLocker l(&m_lockSituations);
m_maxSituations = max;
}
QList<SituationLog> CInterpolationLogger::getSituationsLog() const
{
QReadLocker l(&m_lockSituations);
return m_situationLogs;
}
QList<PartsLog> CInterpolationLogger::getPartsLog() const
{
QReadLocker l(&m_lockParts);
return m_partsLogs;
}
QList<SituationLog> CInterpolationLogger::getSituationsLog(const CCallsign &cs) const
{
const QList<SituationLog> copy(this->getSituationsLog());
QList<SituationLog> logs;
for (const SituationLog &log : copy)
{
if (log.callsign != cs) { continue; }
logs.push_back(log);
}
return logs;
}
QList<PartsLog> CInterpolationLogger::getPartsLog(const CCallsign &cs) const
{
const QList<PartsLog> copy(this->getPartsLog());
QList<PartsLog> logs;
for (const PartsLog &log : copy)
{
if (log.callsign != cs) { continue; }
logs.push_back(log);
}
return logs;
}
SituationLog CInterpolationLogger::getLastSituationLog() const
{
QReadLocker l(&m_lockSituations);
if (m_situationLogs.isEmpty()) { return SituationLog(); }
return m_situationLogs.last();
}
SituationLog CInterpolationLogger::getLastSituationLog(const CCallsign &cs) const
{
const QList<SituationLog> copy(this->getSituationsLog(cs));
if (copy.isEmpty()) { return SituationLog(); }
return copy.last();
}
CAircraftSituation CInterpolationLogger::getLastSituation() const
{
QReadLocker l(&m_lockSituations);
if (m_situationLogs.isEmpty()) { return CAircraftSituation(); }
return m_situationLogs.last().situationCurrent;
}
CAircraftSituation CInterpolationLogger::getLastSituation(const CCallsign &cs) const
{
const QList<SituationLog> copy(this->getSituationsLog(cs));
if (copy.isEmpty()) { return CAircraftSituation(); }
return copy.last().situationCurrent;
}
CAircraftParts CInterpolationLogger::getLastParts() const
{
QReadLocker l(&m_lockParts);
if (m_partsLogs.isEmpty()) { return CAircraftParts(); }
return m_partsLogs.last().parts;
}
CAircraftParts CInterpolationLogger::getLastParts(const CCallsign &cs) const
{
const QList<PartsLog> copy(this->getPartsLog(cs));
if (copy.isEmpty()) { return CAircraftParts(); }
return copy.last().parts;
}
PartsLog CInterpolationLogger::getLastPartsLog() const
{
QReadLocker l(&m_lockParts);
if (m_partsLogs.isEmpty()) { return PartsLog(); }
return m_partsLogs.last();
}
PartsLog CInterpolationLogger::getLastPartsLog(const CCallsign &cs) const
{
const QList<PartsLog> copy(this->getPartsLog(cs));
if (copy.isEmpty()) { return PartsLog(); }
return copy.last();
}
const QString &CInterpolationLogger::filePatternInterpolationLog()
{
static const QString p("*interpolation.html");
return p;
}
const QString &CInterpolationLogger::filePatternPartsLog()
{
static const QString p("*parts.html");
return p;
}
const QStringList &CInterpolationLogger::filePatterns()
{
static const QStringList l({ filePatternInterpolationLog(), filePatternPartsLog() });
return l;
}
QString CInterpolationLogger::getHtmlInterpolationLog(const QList<SituationLog> &logs)
{
if (logs.isEmpty()) { return {}; }
static const QString tableHeader =
QStringLiteral(
u"<thead><tr>"
u"<th title=\"changed situation\">cs.</th><th>Int</th>"
u"<th title=\"recalculated interpolant\">recalc</th>"
u"<th>CS</th><th>VTOL</th><th>timestamp</th><th>since</th>"
u"<th>ts old</th><th>ts new</th><th>ts cur</th>"
u"<th>Interpolation ts.</th><th>Sample &Delta;t</th><th>fraction</th>"
u"<th>lat.old</th><th>lat.new</th><th>lat.cur</th>"
u"<th>lng.old</th><th>lng.new</th><th>lng.cur</th>"
u"<th>alt.old</th><th>alt.2nd</th><th>alt.new</th><th>alt.cur</th>"
u"<th>elv.old</th><th>elv.2nd</th><th>elv.new</th><th>elv.cur</th>"
u"<th>gnd.factor</th>"
u"<th>onGnd.old</th><th>onGnd.new</th><th>onGnd.cur</th>"
u"<th>CG</th>"
u"<th>parts</th><th title=\"changed parts\">cp.</th><th>parts details</th>"
u"</tr></thead>\n");
static const CLengthUnit ft = CLengthUnit::ft();
const SituationLog firstLog = logs.first();
qint64 newPosTs = firstLog.newestInterpolationSituation().getMSecsSinceEpoch();
CAircraftParts lastParts; // default, so shown if parts are different from default
QString tableRows("<tbody>\n");
for (const SituationLog &log : logs)
{
const CAircraftSituation situationOld = log.oldestInterpolationSituation();
const CAircraftSituation situationNew = log.newestInterpolationSituation();
const CAircraftSituation situation2nd = log.secondInterpolationSituation();
const bool changedNewPosition = (newPosTs != situationNew.getMSecsSinceEpoch());
const bool changedParts = (lastParts != log.parts);
newPosTs = situationNew.getMSecsSinceEpoch();
lastParts = log.parts;
// fixme KB 2018/12 comment and tableRows can be removed if there are no further issues
// concatenating in multiple steps, otherwise C4503 warnings
tableRows +=
u"<tr>" %
(changedNewPosition ? QStringLiteral("<td class=\"changed\">*</td>") : QStringLiteral("<td></td>")) %
u"<td>" % log.interpolator % u"</td>" %
u"<td>" % boolToYesNo(log.interpolantRecalc) % u"</td>"
u"<td>" % log.callsign.asString() % u"</td>" %
u"<td>" % boolToYesNo(log.vtolAircraft) % u"</td>" %
u"<td>" % msSinceEpochToTime(log.tsCurrent) % u"</td>" %
u"<td>" % QString::number(log.tsCurrent - firstLog.tsCurrent) % u"</td>" %
u"<td class=\"old\">" % situationOld.getTimestampAndOffset(true) % u"</td>" %
u"<td class=\"new\">" % situationNew.getTimestampAndOffset(true) % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.getTimestampAndOffset(true) % u"</td>" %
u"<td>" % msSinceEpochToTime(log.tsInterpolated) % u"</td>" %
u"<td>" % QString::number(log.deltaSampleTimesMs) % u"ms</td>" %
u"<td>" % QString::number(log.simTimeFraction) % u"</td>" %
// tableRows +=
u"<td class=\"old\">" % situationOld.latitudeAsString() % u"</td>" %
u"<td class=\"new\">" % situationNew.latitudeAsString() % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.latitudeAsString() % u"</td>" %
u"<td class=\"old\">" % situationOld.longitudeAsString() % u"</td>" %
u"<td class=\"new\">" % situationNew.longitudeAsString() % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.longitudeAsString() % u"</td>" %
// tableRows +=
u"<td class=\"old\">" % situationOld.getAltitude().valueRoundedWithUnit(ft, 1) % u"</td>" %
u"<td class=\"old\">" % situation2nd.getAltitude().valueRoundedWithUnit(ft, 1) % u"</td>" %
u"<td class=\"new\">" % situationNew.getAltitude().valueRoundedWithUnit(ft, 1) % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.getAltitude().valueRoundedWithUnit(ft, 1) % u"</td>" %
u"<td class=\"old\">" % situationOld.getGroundElevation().valueRoundedWithUnit(ft, 1) % u" " % situationOld.getGroundElevationInfoAsString() % u"</td>" %
u"<td class=\"old\">" % situation2nd.getGroundElevation().valueRoundedWithUnit(ft, 1) % u" " % situation2nd.getGroundElevationInfoAsString() % u"</td>" %
u"<td class=\"new\">" % situationNew.getGroundElevation().valueRoundedWithUnit(ft, 1) % u" " % situationNew.getGroundElevationInfoAsString() % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.getGroundElevation().valueRoundedWithUnit(ft, 1) % u" " % log.situationCurrent.getGroundElevationInfoAsString() % u"</td>" %
u"<td>" % QString::number(log.groundFactor) % u"</td>" %
u"<td class=\"old\">" % situationOld.getOnGroundInfo() % u"</td>" %
u"<td class=\"new\">" % situationNew.getOnGroundInfo() % u"</td>" %
u"<td class=\"cur\">" % log.situationCurrent.getOnGroundInfo() % u"</td>" %
// tableRows +=
u"<td>" % log.cgAboveGround.valueRoundedWithUnit(ft, 0) % u"</td>" %
u"<td>" % boolToYesNo(log.useParts) % u"</td>" %
(changedParts ? u"<td class=\"changed\">*</td>" : u"<td></td>") %
u"<td>" % (!log.useParts || log.parts.isNull() ? QString() : log.parts.toQString(true).toHtmlEscaped()) % u"</td>" %
u"</tr>\n";
}
tableRows += QStringLiteral("</tbody>\n");
return u"<table class=\"small\">\n" % tableHeader % tableRows % u"</table>\n";
}
QString CInterpolationLogger::getKmlChangedSituations(const QList<SituationLog> &logs)
{
if (logs.isEmpty()) { return {}; }
QString kml;
qint64 newPosTs = -1;
int n = 1;
const CKmlUtils::KMLSettings s(true, true);
for (const SituationLog &log : logs)
{
const CAircraftSituation situationNew = log.newestInterpolationSituation();
const bool changedNewPosition = (newPosTs != situationNew.getMSecsSinceEpoch());
const bool recalc = log.interpolantRecalc;
if (!changedNewPosition && !recalc) { continue; }
newPosTs = situationNew.getMSecsSinceEpoch();
kml += CKmlUtils::asPlacemark(
QStringLiteral("%1: %2 new pos: %3 recalc: %4").arg(n++).arg(situationNew.getFormattedUtcTimestampHmsz(), boolToYesNo(changedNewPosition), boolToYesNo(recalc)),
situationNew.toQString(true),
situationNew, s) % u"\n";
}
return kml;
}
QString CInterpolationLogger::getKmlElevations(const QList<SituationLog> &logs)
{
if (logs.isEmpty()) { return {}; }
QString kml;
qint64 newPosTs = -1;
int n = 1;
const CKmlUtils::KMLSettings s(true, true);
for (const SituationLog &log : logs)
{
const CAircraftSituation situationNew = log.newestInterpolationSituation();
const bool changedNewPosition = (newPosTs != situationNew.getMSecsSinceEpoch());
const bool recalc = log.interpolantRecalc;
if (!changedNewPosition && !recalc) { continue; }
if (!situationNew.hasGroundElevation()) { continue; }
newPosTs = situationNew.getMSecsSinceEpoch();
kml += CKmlUtils::asPlacemark(
QStringLiteral("%1: %2 %3 info: %4 alt.cor: %5").arg(n++).arg(
situationNew.getFormattedUtcTimestampHmsz(),
situationNew.getGroundElevationAndInfo(),
log.elevationInfo, log.altCorrection),
situationNew.getGroundElevationPlane().toQString(true),
situationNew.getGroundElevationPlane(), s) % u"\n";
}
return kml;
}
QString CInterpolationLogger::getKmlInterpolatedSituations(const QList<SituationLog> &logs)
{
if (logs.isEmpty()) { return {}; }
const CKmlUtils::KMLSettings s(true, false);
QString coordinates;
for (const SituationLog &log : logs)
{
const CAircraftSituation situation = log.situationCurrent;
coordinates += CKmlUtils::asRawCoordinates(situation, s.withAltitude) % u"\n";
}
return
u"<Placemark>\n"
u"<name>Interpolation " % QString::number(logs.size()) % u"entries</name>\n" %
CKmlUtils::asLineString(coordinates, s) %
u"</Placemark>\n";
}
QString CInterpolationLogger::getHtmlPartsLog(const QList<PartsLog> &logs)
{
if (logs.isEmpty()) { return {}; }
static const QString tableHeader = QStringLiteral(
u"<thead><tr>"
u"<th>CS</th><th>timestamp</th>"
u"<th>c.</th>"
u"<th>parts</th>"
u"</tr></thead>\n");
CAircraftParts lastParts; // default, so shown if parts are different from default
QString tableRows("<tbody>\n");
for (const PartsLog &log : logs)
{
const bool changedParts = (lastParts != log.parts);
lastParts = log.parts;
tableRows +=
u"<tr><td>" % log.callsign.asString() % u"</td>" %
u"<td>" % msSinceEpochToTime(log.tsCurrent) % u"</td>" %
(changedParts ? u"<td class=\"changed\">*</td>" : u"<td></td>") %
u"<td>" % (log.empty ? QStringLiteral("empty") : log.parts.toQString()) % u"</td></tr>";
}
tableRows += "</tbody>\n";
return QStringLiteral("<table class=\"small\">\n") % tableHeader % tableRows % QStringLiteral("</table>\n");
}
void CInterpolationLogger::clearLog()
{
{ QWriteLocker l(&m_lockSituations); m_situationLogs.clear(); }
{ QWriteLocker l(&m_lockParts); m_partsLogs.clear(); }
}
QString CInterpolationLogger::msSinceEpochToTime(qint64 ms)
{
static const QString dateFormat("hh:mm:ss.zzz");
return QDateTime::fromMSecsSinceEpoch(ms).toString(dateFormat);
}
QString CInterpolationLogger::msSinceEpochToTimeAndTimestamp(qint64 ms)
{
return CInterpolationLogger::msSinceEpochToTime(ms) % u"/" % QString::number(ms);
}
QString CInterpolationLogger::msSinceEpochToTime(qint64 t1, qint64 t2, qint64 t3)
{
if (t3 < 0) { return QStringLiteral("%1 %2").arg(msSinceEpochToTime(t1), msSinceEpochToTime(t2)); }
return QStringLiteral("%1 %2 %3").arg(msSinceEpochToTime(t1), msSinceEpochToTime(t2), msSinceEpochToTime(t3));
}
QString SituationLog::toQString(
bool withSetup,
bool withCurrentSituation,
bool withElevation, bool withOtherPositions, bool withDeltaTimes, const QString &separator) const
{
const CAircraftSituation situationOldInterpolation = this->oldestInterpolationSituation();
const CAircraftSituation situationNewInterpolation = this->newestInterpolationSituation();
return (
withSetup ?
u"setup: " % usedSetup.toQString(true) % separator :
QString()
) %
(
withElevation ?
u"Elev.info: " % elevationInfo %
u" scenery os: " % sceneryOffset.valueRoundedWithUnit(1) % separator :
QString()
) %
u"change: " % change.toQString(true) %
separator %
u"Interpolation CS: " % callsign.asString() % separator %
u"ts: " % CInterpolationLogger::msSinceEpochToTimeAndTimestamp(tsCurrent) %
u" | type: " % this->interpolationType() %
u" | gnd.fa.: " % QString::number(groundFactor) %
u" | CG: " % cgAboveGround.valueRoundedWithUnit(CLengthUnit::m(), 1) %
u" " % cgAboveGround.valueRoundedWithUnit(CLengthUnit::ft(), 1) %
u" | alt.cor.: " % altCorrection %
u" | #nw.sit.: " % QString::number(noNetworkSituations) %
u" | #invalid: " % QString::number(noInvalidSituations) %
(
withDeltaTimes ?
separator %
u"cur.time: " % CInterpolationLogger::msSinceEpochToTimeAndTimestamp(tsCurrent) %
u" | int.time: " % CInterpolationLogger::msSinceEpochToTimeAndTimestamp(tsInterpolated) %
u" | dt.cur.int.: " % QString::number(deltaCurrentToInterpolatedTime()) % u"ms" %
u" | sample dt: " % QString::number(deltaSampleTimesMs) % u"ms" %
u" | fr.[0-1]: " % QString::number(simTimeFraction) %
u" | old int.pos.: " % situationOldInterpolation.getTimestampAndOffset(true) %
u" | new int.pos.: " % situationNewInterpolation.getTimestampAndOffset(true) %
u" | #int.pos.: " % QString::number(interpolationSituations.size()) :
QString()
) %
(
withCurrentSituation ?
separator %
u"cur.sit.(interpolated): " % situationCurrent.toQString(true) :
QString()
) %
(
withOtherPositions ?
separator %
u"old: " % situationOldInterpolation.toQString(true) %
separator %
u"new: " % situationNewInterpolation.toQString(true) :
QString()
);
}
QString PartsLog::toQString(const QString &separator) const
{
return u"CS: " % callsign.asString() % separator %
u"ts: " % CInterpolationLogger::msSinceEpochToTimeAndTimestamp(tsCurrent) %
u" | #nw.parts: " % QString::number(noNetworkParts) %
separator %
u"parts: " % parts.toQString(true);
}
const QString &SituationLog::interpolationType() const
{
static const QString s("spline");
static const QString l("linear");
static const QString u("unknown");
if (interpolator == 's') { return s; }
if (interpolator == 'l') { return l; }
return u;
}
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wstrict-overflow"
#endif
const CAircraftSituation &SituationLog::secondInterpolationSituation() const
{
if (interpolationSituations.size() < 2) { return Aviation::CAircraftSituation::null(); }
const Aviation::CAircraftSituationList::size_type i = interpolationSituations.size() - 2; // 2nd latest, latest at end
return interpolationSituations[i];
}
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
} // namespace