From 1203c58a232fdda407beb5b2e6ebacdd8a1db8c2 Mon Sep 17 00:00:00 2001
From: Klaus Basan <klaus.basan@klausbasan.de>
Date: Fri, 23 Mar 2018 02:18:47 +0100
Subject: [PATCH] Ref T259, Ref T243 utility functions for aircraft
 situation/elevation plane

---
 src/blackmisc/aviation/aircraftsituation.cpp     |  6 ++++++
 src/blackmisc/aviation/aircraftsituation.h       |  3 +++
 src/blackmisc/aviation/aircraftsituationlist.cpp | 15 +++++++++++++++
 src/blackmisc/aviation/aircraftsituationlist.h   |  6 ++++++
 src/blackmisc/geo/elevationplane.cpp             |  7 +++++++
 src/blackmisc/geo/elevationplane.h               |  8 +++++---
 6 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/src/blackmisc/aviation/aircraftsituation.cpp b/src/blackmisc/aviation/aircraftsituation.cpp
index d63801742..0c4985aa4 100644
--- a/src/blackmisc/aviation/aircraftsituation.cpp
+++ b/src/blackmisc/aviation/aircraftsituation.cpp
@@ -381,6 +381,12 @@ namespace BlackMisc
             return gsKmh >= 1.0;
         }
 
+        bool CAircraftSituation::canLikelySkipNearGroundInterpolation() const
+        {
+            if (this->getGroundSpeed().value(CSpeedUnit::kts()) > 250) { return true; }
+            return false;
+        }
+
         CLength CAircraftSituation::getDistancePerTime(const CTime &time) const
         {
             if (this->getGroundSpeed().isNull()) { return CLength(0, CLengthUnit::nullUnit()); }
diff --git a/src/blackmisc/aviation/aircraftsituation.h b/src/blackmisc/aviation/aircraftsituation.h
index ff29e221b..275efe8e2 100644
--- a/src/blackmisc/aviation/aircraftsituation.h
+++ b/src/blackmisc/aviation/aircraftsituation.h
@@ -274,6 +274,9 @@ namespace BlackMisc
             //! Is moving? Means ground speed > epsilon
             bool isMoving() const;
 
+            //! Situation looks like an aircraft not near ground
+            bool canLikelySkipNearGroundInterpolation() const;
+
             //! Distance per time
             PhysicalQuantities::CLength getDistancePerTime(const PhysicalQuantities::CTime &time) const;
 
diff --git a/src/blackmisc/aviation/aircraftsituationlist.cpp b/src/blackmisc/aviation/aircraftsituationlist.cpp
index 4f2e04509..22242fd99 100644
--- a/src/blackmisc/aviation/aircraftsituationlist.cpp
+++ b/src/blackmisc/aviation/aircraftsituationlist.cpp
@@ -77,5 +77,20 @@ namespace BlackMisc
         {
             return this->findBy(&CAircraftSituation::hasInboundGroundInformation, hasGroundInfo);
         }
+
+        bool CAircraftSituationList::hasSituationWithoutGroundElevation() const
+        {
+            return this->contains(&CAircraftSituation::hasGroundElevation, false);
+        }
+
+        bool CAircraftSituationList::hasGroundElevationOutsideRange(const CLength &range) const
+        {
+            for (const CAircraftSituation &situation : *this)
+            {
+                if (!situation.hasGroundElevation()) { return true; }
+                if (situation.getGroundElevationPlane().getRadius() > range) { return true; }
+            }
+            return false;
+        }
     } // namespace
 } // namespace
diff --git a/src/blackmisc/aviation/aircraftsituationlist.h b/src/blackmisc/aviation/aircraftsituationlist.h
index 4b20d6453..b77fbe18b 100644
--- a/src/blackmisc/aviation/aircraftsituationlist.h
+++ b/src/blackmisc/aviation/aircraftsituationlist.h
@@ -62,6 +62,12 @@ namespace BlackMisc
 
             //! Find if having inbound information
             CAircraftSituationList findByInboundGroundInformation(bool hasGroundInfo) const;
+
+            //! Any situation without ground info
+            bool hasSituationWithoutGroundElevation() const;
+
+            //! Any situation outside range
+            bool hasGroundElevationOutsideRange(const PhysicalQuantities::CLength &range) const;
         };
     } // namespace
 } // namespace
diff --git a/src/blackmisc/geo/elevationplane.cpp b/src/blackmisc/geo/elevationplane.cpp
index 600412c5d..4cfdbceaa 100644
--- a/src/blackmisc/geo/elevationplane.cpp
+++ b/src/blackmisc/geo/elevationplane.cpp
@@ -8,6 +8,7 @@
  */
 
 #include "elevationplane.h"
+#include "coordinategeodetic.h"
 #include "blackmisc/pq/length.h"
 #include "blackmisc/propertyindex.h"
 
@@ -27,6 +28,12 @@ namespace BlackMisc
                          m_radius.valueRoundedWithUnit(2, i18n));
         }
 
+        CElevationPlane::CElevationPlane(const ICoordinateGeodetic &coordinate, const ICoordinateGeodetic &rangeCoordinate) :
+            CCoordinateGeodetic(coordinate)
+        {
+            m_radius = this->calculateGreatCircleDistance(rangeCoordinate);
+        }
+
         const CAltitude &CElevationPlane::getAltitudeIfWithinRadius(const ICoordinateGeodetic &coordinate) const
         {
             return (isWithinRange(coordinate)) ? geodeticHeight() : CAltitude::null();
diff --git a/src/blackmisc/geo/elevationplane.h b/src/blackmisc/geo/elevationplane.h
index d8b06a338..cbbecc71e 100644
--- a/src/blackmisc/geo/elevationplane.h
+++ b/src/blackmisc/geo/elevationplane.h
@@ -21,8 +21,7 @@ namespace BlackMisc
     {
         //! Plane of same elevation, can be a single point or larger area (e.g. airport)
         //! \remark 100km/h 1sec => 28m
-        class BLACKMISC_EXPORT CElevationPlane :
-            public CValueObject<CElevationPlane, CCoordinateGeodetic>
+        class BLACKMISC_EXPORT CElevationPlane : public CCoordinateGeodetic
         {
         public:
             //! Properties by index
@@ -34,8 +33,11 @@ namespace BlackMisc
             //! Default constructor
             CElevationPlane() {}
 
+            //! Plane at given coordinates with range to 2nd coordinate
+            CElevationPlane(const ICoordinateGeodetic &coordinate, const ICoordinateGeodetic &rangeCoordinate);
+
             //! Constructors from CCoordinateGeodetic
-            using CValueObject<CElevationPlane, CCoordinateGeodetic>::CValueObject;
+            using CCoordinateGeodetic::CCoordinateGeodetic;
 
             //! Radius
             const PhysicalQuantities::CLength &getRadius() const { return m_radius; }