refs #551, formatting and minor changes found during searching for the issue

src/blackcore/airspaceanalyzer.cpp

@@ -189,7 +189,8 @@ namespace BlackCore
             maxRenderedBoundary = this->m_simulatorMaxRenderedBoundary;
         }
 
-        //! \fixme Analyzer: generate only when restricted?
+        // remark for simulation snapshot is used when there are restrictions
+        // nevertheless we calculate all the time as the snapshot could be used in other scenarios
 
         CSimulatedAircraftList aircraftInRange(getAircraftInRange()); // thread safe copy from provider
         CAirspaceAircraftSnapshot snapshot(

src/blackcore/interpolatorlinear.cpp

@@ -33,7 +33,7 @@ namespace BlackCore
 
         // data, split situations by time
         if (currentTimeMsSinceEpoc < 0) { currentTimeMsSinceEpoc = QDateTime::currentMSecsSinceEpoch(); }
-        qint64 splitTimeMsSinceEpoch = currentTimeMsSinceEpoc - TimeOffsetMs;
+        qint64 splitTimeMsSinceEpoch = currentTimeMsSinceEpoc - TimeOffsetMs; // \todo needs to be variable in the future with interim positions
 
         QList<CAircraftSituationList> splitSituations(remoteAircraftSituations(callsign).splitByTime(splitTimeMsSinceEpoch, true));
         CAircraftSituationList &situationsNewer = splitSituations[0]; // newer part
@@ -87,7 +87,8 @@ namespace BlackCore
         // < 0 should not happen due to the split, > 1 can happen if new values are delayed beyond split time
         // 1) values > 1 mean extrapolation
         // 2) values > 2 mean no new situations coming in
-        double simulationTimeFraction = 1 - ((newSituation.getMSecsSinceEpoch() - splitTimeMsSinceEpoch) / deltaTime);
+        double distanceToSplitTime = newSituation.getMSecsSinceEpoch() - splitTimeMsSinceEpoch;
+        double simulationTimeFraction = 1 - (distanceToSplitTime / deltaTime);
         if (simulationTimeFraction > 2.0)
         {
             if (this->m_withDebugMsg)

src/blackcore/simulatorcommon.cpp

@@ -35,7 +35,7 @@ namespace BlackCore
     {
         this->setObjectName("Simulator: " + info.getIdentifier());
 
-        // provider signals
+        // provider signals, hook up with remote aircraft provider
         m_remoteAircraftProviderConnections.append(
             this->m_remoteAircraftProvider->connectRemoteAircraftProviderSignals(
                 this, // receiver must match object in bind
@@ -339,7 +339,7 @@ namespace BlackCore
             changed = r > 0;
         }
 
-        // we handled snapshot
+        // we have handled snapshot
         if (changed)
         {
             emit airspaceSnapshotHandled();

src/blackcore/simulatorcommon.h

@@ -100,7 +100,7 @@ namespace BlackCore
         //! Slow timer used to highlight aircraft, can be used for other things too
         virtual void ps_oneSecondTimer();
 
-        //! Recalculate the rendered aircraft
+        //! Recalculate the rendered aircraft, this happens when restrictions are applied (max. aircraft, range)
         virtual void ps_recalculateRenderedAircraft(const BlackMisc::Simulation::CAirspaceAircraftSnapshot &snapshot);
 
         //! Provider added situation