Ref T261, interpolator PBH in own file

src/blackmisc/simulation/interpolatorpbh.h

@@ -0,0 +1,55 @@
+/* Copyright (C) 2018
+ * 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 and at http://www.swift-project.org/license.html. 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.
+ */
+
+//! \file
+
+#ifndef BLACKMISC_SIMULATION_INTERPOLATORPBH_H
+#define BLACKMISC_SIMULATION_INTERPOLATORPBH_H
+
+#include "blackmisc/aviation/aircraftsituation.h"
+#include "blackmisc/aviation/heading.h"
+#include "blackmisc/pq/angle.h"
+#include "blackmisc/pq/speed.h"
+
+namespace BlackMisc
+{
+    namespace Simulation
+    {
+        //! Simple interpolator for pitch, bank, heading, groundspeed
+        class CInterpolatorPbh
+        {
+        public:
+            //! Constructor
+            //! @{
+            CInterpolatorPbh() {}
+            CInterpolatorPbh(const Aviation::CAircraftSituation &older, const Aviation::CAircraftSituation &newer) : m_oldSituation(older), m_newSituation(newer) {}
+            CInterpolatorPbh(double time, const Aviation::CAircraftSituation &older, const Aviation::CAircraftSituation &newer) : m_simulationTimeFraction(time), m_oldSituation(older), m_newSituation(newer) {}
+            //! @}
+
+            //! Getter
+            //! @{
+            Aviation::CHeading getHeading() const;
+            PhysicalQuantities::CAngle getPitch() const;
+            PhysicalQuantities::CAngle getBank() const;
+            PhysicalQuantities::CSpeed getGroundSpeed() const;
+            const Aviation::CAircraftSituation &getOldSituation() const { return m_oldSituation; }
+            const Aviation::CAircraftSituation &getNewSituation() const { return m_newSituation; }
+            //! @}
+
+            //! Change time fraction
+            void setTimeFraction(double tf) { m_simulationTimeFraction = tf; }
+
+        private:
+            double m_simulationTimeFraction = 0.0;
+            Aviation::CAircraftSituation m_oldSituation;
+            Aviation::CAircraftSituation m_newSituation;
+        };
+    } // namespace
+} // namespace
+#endif // guard