MomentumKinematicConstraint.h

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#ifndef MomentumKinematicConstraint_H
#define MomentumKinematicConstraint_H

#include "RecoVertex/KinematicFitPrimitives/interface/KinematicConstraint.h"


class MomentumKinematicConstraint : public KinematicConstraint
{

public:

MomentumKinematicConstraint(const AlgebraicVector& momentum, 
                            const AlgebraicVector& dev);

std::pair<AlgebraicVector,AlgebraicVector> value(const AlgebraicVector& exPoint) const override;

std::pair<AlgebraicMatrix, AlgebraicVector> derivative(const AlgebraicVector& exPoint) const override;

std::pair<AlgebraicMatrix, AlgebraicVector> derivative(const std::vector<RefCountedKinematicParticle> &par) const override;

std::pair<AlgebraicVector, AlgebraicVector> value(const std::vector<RefCountedKinematicParticle> &par) const override;

AlgebraicVector deviations(int nStates) const override;

int numberOfEquations() const override;

MomentumKinematicConstraint * clone() const override
  {return new MomentumKinematicConstraint(*this);}

private:

AlgebraicVector mm;
AlgebraicVector dd;

};


#endif