/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/RecoVertex/KinematicFit/interface/ConstrainedTreeBuilder.h

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#ifndef ConstrainedTreeBuilder_H
#define ConstrainedTreeBuilder_H

#include "RecoVertex/KinematicFitPrimitives/interface/RefCountedKinematicTree.h"
#include "RecoVertex/KinematicFitPrimitives/interface/VirtualKinematicParticleFactory.h"
#include "RecoVertex/KinematicFitPrimitives/interface/KinematicVertexFactory.h"

class ConstrainedTreeBuilder
{

public:

 ConstrainedTreeBuilder();
 
 ~ConstrainedTreeBuilder();

 RefCountedKinematicTree buildTree(const std::vector<RefCountedKinematicParticle> & initialParticles, 
                         const std::vector<KinematicState> & finalStates,
                         const RefCountedKinematicVertex vtx, const AlgebraicMatrix& fCov) const;

private:

  RefCountedKinematicTree buildTree(const RefCountedKinematicParticle virtualParticle, 
        const RefCountedKinematicVertex vtx, const std::vector<RefCountedKinematicParticle> & particles) const;

 AlgebraicMatrix covarianceMatrix(const std::vector<RefCountedKinematicParticle> &rPart, 
                                       const AlgebraicVector7& newPar,
                                       const AlgebraicMatrix& fitCov)const;
                                       
 VirtualKinematicParticleFactory * pFactory;                                   
 KinematicVertexFactory * vFactory;
};
#endif