DistanceBetweenComponents.h

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#ifndef DistanceBetweenComponents_H
#define DistanceBetweenComponents_H

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

template <unsigned int N>
class DistanceBetweenComponents {
public:
  typedef SingleGaussianState<N> SingleState;

public:
  virtual double operator()(const SingleState&, const SingleState&) const = 0;

  virtual DistanceBetweenComponents<N>* clone() const = 0;

  virtual ~DistanceBetweenComponents() {}
};

#endif  // DistanceBetweenComponents_H