/data/refman/pasoursint/CMSSW_6_1_2_SLHC4_patch1/src/RecoVertex/KinematicFitPrimitives/interface/MultiTrackKinematicConstraint.h

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#ifndef MultiTrackKinematicConstraint_H
#define MultiTrackKinematicConstraint_H

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


class MultiTrackKinematicConstraint
{
public:

MultiTrackKinematicConstraint() {}

virtual ~MultiTrackKinematicConstraint() {}

virtual AlgebraicVector  value(const std::vector<KinematicState>,
                               const GlobalPoint& ) const = 0; 

virtual AlgebraicMatrix parametersDerivative(const std::vector<KinematicState>,
                                             const GlobalPoint& ) const = 0;


virtual AlgebraicMatrix positionDerivative(const std::vector<KinematicState>,
                                           const GlobalPoint& ) const = 0;
                                    
virtual int numberOfEquations() const = 0;

virtual MultiTrackKinematicConstraint * clone() const = 0;

};


#endif