/data/refman/pasoursint/CMSSW_5_3_10_patch1/src/RecoVertex/VertexPrimitives/interface/BasicSingleVertexState.h

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#ifndef BasicSingleVertexState_H
#define BasicSingleVertexState_H

#include "RecoVertex/VertexPrimitives/interface/BasicVertexState.h"

//#include "CommonReco/CommonVertex/interface/RefCountedVertexSeed.h"


class BasicSingleVertexState : public BasicVertexState {

public:

  BasicSingleVertexState();
  BasicSingleVertexState(const GlobalPoint & pos, const GlobalError & posErr,
                const double & weightInMix = 1.0);
  BasicSingleVertexState(const GlobalPoint & pos, const GlobalWeight & posWeight,
                const double & weightInMix = 1.0);
  BasicSingleVertexState(const AlgebraicVector3 & weightTimesPosition,
                const GlobalWeight & posWeight,
                const double & weightInMix = 1.0);

  virtual BasicSingleVertexState* clone() const
  {
    return new BasicSingleVertexState(*this);
  }

  GlobalPoint position() const;
  GlobalError error() const;
  GlobalWeight weight() const;
  AlgebraicVector3 weightTimesPosition() const;
  double weightInMixture() const;

  bool isValid() const {return valid;}

private:

  void computePosition() const;
  void computeError() const;
  void computeWeight() const;
  void computeWeightTimesPos() const;

  mutable GlobalPoint thePos;
  mutable bool thePosAvailable;
  mutable GlobalError theErr;
  mutable bool theErrAvailable;
  mutable GlobalWeight theWeight;
  mutable bool theWeightAvailable;
  mutable AlgebraicVector3 theWeightTimesPos;
  mutable bool theWeightTimesPosAvailable;

  bool valid;
  double theWeightInMix;
};

#endif