KinematicConstraint.h

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#ifndef KinematicConstraint_H
#define KinematicConstraint_H

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

class KinematicConstraint{


public:

KinematicConstraint() {}

virtual ~KinematicConstraint() {}

virtual std::pair<AlgebraicVector, AlgebraicVector> value(const AlgebraicVector& exPoint) const = 0;

virtual std::pair<AlgebraicMatrix, AlgebraicVector> derivative(const AlgebraicVector& exPoint) const = 0;


virtual std::pair<AlgebraicVector, AlgebraicVector> value(const std::vector<RefCountedKinematicParticle> &par) const = 0;

virtual std::pair<AlgebraicMatrix, AlgebraicVector> derivative(const std::vector<RefCountedKinematicParticle> &par) const = 0;

virtual AlgebraicVector deviations(int nStates) const = 0;

virtual int numberOfEquations() const = 0;

virtual KinematicConstraint * clone() const = 0;

};

#endif