new geo functions

changed the walkers
added moving average
fixed the interpolator
new test-cases

math/MovingAVG.h

@@ -0,0 +1,58 @@
+#ifndef MOVINGAVG_H
+#define MOVINGAVG_H
+
+#include <vector>
+
+template <typename T> class MovingAVG {
+
+private:
+
+	/** up to "size" elements */
+	std::vector<T> values;
+
+	/** track the current sum of the vector's values */
+	T curSum = 0;
+
+	/** the number of elements to average */
+	int size;
+
+public:
+
+	/** ctor */
+	MovingAVG(const int size) : size(size) {;}
+
+	/** add a new value */
+	void add(const T val) {
+
+		// add new value
+		values.push_back(val);
+		curSum += val;
+
+		// too many values?
+		if ((int) values.size() > size) {
+			curSum -= values.front();
+			values.erase(values.begin());
+		}
+
+	}
+
+	/** get the current average */
+	T get() const {
+		return curSum / values.size();
+	}
+
+
+	/** get the number of used entries */
+	int getNumUsed() const {
+		return (int) values.size();
+	}
+
+	/** get number of entries to average */
+	int getSize() const {
+		return size;
+	}
+
+
+};
+
+#endif // MOVINGAVG_H