/data/refman/pasoursint/CMSSW_5_3_4/src/RecoVertex/KinematicFit/interface/VertexKinematicConstraintT.h

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#ifndef VertexKinematicConstraintT_H
#define VertexKinematicConstraintT_H

#include "RecoVertex/KinematicFitPrimitives/interface/MultiTrackKinematicConstraintT.h"
#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"

class VertexKinematicConstraintT: public MultiTrackKinematicConstraintT<2,4>
{

private:

  typedef  MultiTrackKinematicConstraintT<2,4> super;

  // to be optimized

  double a_i[2];
  double novera[2], n[2],m[2],k[2], delta[2]; 
  GlobalVector mom[2];
  GlobalVector dpos[2];
  

public:

VertexKinematicConstraintT();
 
virtual ~VertexKinematicConstraintT();

  // initialize the constraint so it can precompute common qualtities to the three next call
  virtual void init(const std::vector<KinematicState>& states,
                    const GlobalPoint& point,  const GlobalVector& mf);


virtual int numberOfEquations() const;
 
virtual VertexKinematicConstraintT * clone()const
{return new VertexKinematicConstraintT(*this);}


private:
 virtual void fillValue() const;

 virtual void fillParametersDerivative() const;

 virtual void fillPositionDerivative() const;


private:

};
#endif