From 29407d113e2e4dfbd804d7fe28d9ff5d6fcad317 Mon Sep 17 00:00:00 2001
From: Klaus Basan <klaus.basan@klausbasan.de>
Date: Mon, 30 Apr 2018 00:35:52 +0200
Subject: [PATCH] Ref T261, encapsulated groundInterpolationFactor Rational:
 Less compilation time when need to change

---
 src/blackmisc/simulation/interpolator.cpp | 8 ++++++++
 src/blackmisc/simulation/interpolator.h   | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/src/blackmisc/simulation/interpolator.cpp b/src/blackmisc/simulation/interpolator.cpp
index 1cea73da1..dbfc34ca4 100644
--- a/src/blackmisc/simulation/interpolator.cpp
+++ b/src/blackmisc/simulation/interpolator.cpp
@@ -63,6 +63,14 @@ namespace BlackMisc
             return cg;
         }
 
+        template<typename Derived>
+        double CInterpolator<Derived>::groundInterpolationFactor()
+        {
+            // done here so we can change value without "larfer" recompilations
+            static constexpr double f = 0.95;
+            return f;
+        }
+
         template<typename Derived>
         void CInterpolator<Derived>::deferredInit()
         {
diff --git a/src/blackmisc/simulation/interpolator.h b/src/blackmisc/simulation/interpolator.h
index d99b18f39..6b333e497 100644
--- a/src/blackmisc/simulation/interpolator.h
+++ b/src/blackmisc/simulation/interpolator.h
@@ -105,6 +105,10 @@ namespace BlackMisc
             //! Center of gravity, fetched from provider in case needed
             PhysicalQuantities::CLength getAndFetchModelCG();
 
+            //! Decides threshold when situation is considered on ground
+            //! \sa BlackMisc::Aviation::CAircraftSituation::setOnGroundFromGroundFactorFromInterpolation
+            static double groundInterpolationFactor();
+
             const Aviation::CCallsign  m_callsign; //!< corresponding callsign
             CAircraftModel m_model; //!< corresponding model
             Aviation::CAircraftSituation m_lastInterpolation { Aviation::CAircraftSituation::null() }; //!< latest interpolation