/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/RecoVertex/KinematicFit/interface/ColinearityKinematicConstraint.h

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#ifndef ColinearityKinematicConstraint_H
#define ColinearityKinematicConstraint_H

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

class ColinearityKinematicConstraint : public MultiTrackKinematicConstraint{

public:

 enum ConstraintDim {Phi, PhiTheta};

 ColinearityKinematicConstraint(ConstraintDim dim = Phi);


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


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

virtual AlgebraicMatrix positionDerivative(const std::vector<KinematicState> states,
                                    const GlobalPoint& point) const;

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

private:
  ConstraintDim dimension;
  unsigned int size;

};
#endif