Add a class to movingAvg class for calculation of averages for angle data

lib/obp60task/movingAvg.h

@@ -22,6 +22,7 @@ class movingAvg
         int getCount() { return m_nbrReadings; }
         void reset();
         T* getReadings() { return m_readings; }
+        T to2PI(T a);
 
     private:
         int m_interval;     // number of data points for the moving average
@@ -33,6 +34,32 @@ class movingAvg
         T* m_readings;      // pointer to the dynamically allocated interval array
 };
 
+// moving average for angle type of data (wind, course, rotation)
+// makes sense for data types double and float; angle in radians [0..2pi]
+template <typename T>
+class movingAvgAngle
+{
+    public:
+        movingAvgAngle(int interval)
+            : m_interval{interval}, m_nbrReadings{0}, m_sumSin{0}, m_sumCos{0}, m_next{0}, m_buffer{nullptr} {}
+        ~movingAvgAngle() { delete[] m_buffer; }
+        void begin();
+        T reading(T newReading);
+        T getAvg();
+        T getAvg(int nPoints);
+        int getCount() { return m_nbrReadings; }
+        void reset();
+        T* getReadings() { return m_buffer; }
+        T to2PI(T a);
+
+    private:
+        int m_interval;            // number of data points for the moving average
+        int m_nbrReadings;         // number of readings
+        double m_sumSin, m_sumCos; // sum for angle values should always be double for precision reasons, regardless of class type
+        int m_next;                // index to the next reading
+        T* m_buffer;               // pointer to the dynamically allocated interval array
+};
+
 // Include the implementation to satisfy template instantiation requirements
 #include "movingAvg.tpp"