VertexConstraint.h

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#ifndef __VERTEXCONSTRAINT_H
#define __VERTEXCONSTRAINT_H

#include<vector>
#include<cassert>
#include "BaseConstraint.h"
#include "ThreeVector.h"
 
class VertexFitObject;
class TrackFitObject;

//  Class VertexConstraint:

class VertexConstraint: public BaseConstraint {
  public:
    VertexConstraint (const VertexFitObject& vertex_, 
                      const TrackFitObject& track_,
                      int ivertex_,
                      int axis
                     );
    virtual ~VertexConstraint();
    
    virtual double getValue() const;
    
    virtual void getDerivatives(int idim, double der[]) const;
    virtual void add1stDerivativesToMatrix(int idim, double *M) const;
    virtual void add2ndDerivativesToMatrix(int idim, double *M, double lambda) const;
    
    virtual int  getGlobalNum() const {return globalNum;}
    virtual void setGlobalNum(int iglobal) {globalNum = iglobal;}
    
  protected:
      
    int globalNum;
    
    const VertexFitObject *vertex; 
    const TrackFitObject *track; 
    int   ivertex;
    ThreeVector factor;    

};

#endif /* #ifndef  __VERTEXCONSTRAINT_H */

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