MultiGaussianState1D.h

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#ifndef MultiGaussianState1D_H_
#define MultiGaussianState1D_H_

#include "TrackingTools/GsfTools/interface/SingleGaussianState1D.h"

#include <vector>

class MultiGaussianState1D {
public:
  typedef std::vector<SingleGaussianState1D> SingleState1dContainer;

public:

  MultiGaussianState1D() : theCombinedStateUp2Date(false) {}

  MultiGaussianState1D(const SingleState1dContainer& stateV)
    : theComponents(stateV), theCombinedStateUp2Date(false) {}

  ~MultiGaussianState1D() {}

  double weight() const;
  double mean() const;
  double variance() const;
  const SingleState1dContainer& components() const {return theComponents;}

// protected:
private:
  void checkCombinedState() const;

  // should become a vector of pointers to const SingleState
  const SingleState1dContainer theComponents;
  mutable SingleGaussianState1D theCombinedState;
  mutable bool theCombinedStateUp2Date;
};

#endif