SoftBWMassConstraint.h

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#ifdef MARLIN_USE_ROOT

#ifndef __SOFTBWMASSCONSTRAINT_H
#define __SOFTBWMASSCONSTRAINT_H

#include "SoftBWParticleConstraint.h"

#include <limits>

class ParticleFitObject;

//  Class SoftBWMassConstraint:

class SoftBWMassConstraint : public SoftBWParticleConstraint {
  public:
  
    SoftBWMassConstraint (double gamma_,     
                          double mass_ = 0.,  
                          double massmin_ = -std::numeric_limits<double>::infinity(),   
                          double massmax_ =  std::numeric_limits<double>::infinity()    
                   );
    virtual ~SoftBWMassConstraint();
    
    virtual double getValue() const;
    
    virtual void getDerivatives(int idim,      
                                double der[]   
                               ) const;
    
    virtual double getMass (int flag = 1       
                           );
    
    virtual void setMass (double mass_           
                         );
    
  
  protected:
    double mass;      

  
    virtual bool secondDerivatives (int i,                        
                                    int j,                        
                                    double *derivatives           
                                   ) const;
    virtual bool firstDerivatives (int i,                        
                                   double *derivatives           
                                  ) const;
};

#endif // __SOFTBWMASSCONSTRAINT_H

#endif // MARLIN_USE_ROOT