PndEmcShapingNoiseAdder.h

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//#pragma once
#ifndef PNDEMCSHAPINGNOISEADDER_H_
#define PNDEMCSHAPINGNOISEADDER_H_

#include "PndEmcAbsWaveformModifier.h"

class PndEmcWaveform;
class PndEmcAbsWaveformSimulator;

class PndEmcShapingNoiseAdder : public PndEmcAbsWaveformModifier {
 public:
  PndEmcShapingNoiseAdder();
  PndEmcShapingNoiseAdder(Double_t fShapingTime, Double_t sampleRate, Double_t noiseWidth, Double_t inputScale);

  virtual void Modify(PndEmcWaveform *wf);

 protected:
 private:
  Double_t fShapingTime;
  Double_t fNoiseWidth;
  Double_t fInputScale;

  Double_t fSingleNoiseWidth;

  class MA { // moving Average Buffer
   private:
    std::vector<Double_t> buffer;
    UInt_t bpointer;
    Double_t sum;

   public:
    MA(UInt_t size) : buffer(size, 0.0), bpointer(0), sum(0){};

    Double_t operator()(Double_t xN)
    {
      sum += xN - buffer[bpointer];
      buffer[bpointer] = xN;
      bpointer++;
      bpointer %= buffer.size();

      return sum / buffer.size();
    }
    UInt_t GetSize() { return buffer.size(); };
  } fMA_buffer;

  ClassDef(PndEmcShapingNoiseAdder, 0)
};

#endif