fahhh

App/util/Average.h

@@ -0,0 +1,61 @@
+#pragma once
+
+// Class that can average 512 prior values using only 9 floats for storage
+
+#include <vector>
+
+namespace RBX {
+
+	template<typename T>
+	class Average {
+	private:
+		size_t samples;
+		size_t tag;
+		std::vector<T> history;
+
+	public:
+		Average(size_t samples, T initValue) : samples(samples), tag(0)
+		{
+			history.resize(samples, initValue);	
+		}
+
+		void sample(T value, bool advanceBuffer = true) 
+		{
+			history[tag] = value;
+			if (advanceBuffer) {
+				tag = (tag + 1) % samples;
+			}
+		}
+
+		T getAverage() const
+		{
+			T answer = T();
+			for (size_t i = 0; i < samples; ++i) {
+				answer += history[i];
+			}
+			return answer / static_cast<float>(samples);
+		}
+
+		size_t size() const {
+			return samples;
+		}
+		
+		const T& getValue(size_t index) const {
+			return history[index];
+		}
+
+		void resetValues(const T& value) {
+			for (size_t i = 0; i < samples; ++i) {
+				history[i] = value;
+			}
+		}
+
+		void resetValues(size_t samplesNew, const T& value) {
+			for (size_t i = 0; i < samples; ++i) {
+				history[i] = value;
+			}
+			history.resize(samplesNew, value);
+			samples = samplesNew;
+		}
+	};
+} // namespace