TrueStateCreator.h

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#ifndef TRACKMCTOOLS_TRUESTATECREATOR_H
#define TRACKMCTOOLS_TRUESTATECREATOR_H 1

// Include files
// -------------
// from Gaudi
#include "GaudiAlg/GaudiTool.h"

// from Event
#include "Event/MCParticle.h"
#include "Event/MCHit.h"
#include "Event/MCVeloHit.h"

// from Det
#include "VeloDet/DeVelo.h"

// from LHCbKernel
#include "Relations/IAssociator.h" 

// from TrackInterfacces
#include "TrackInterfaces/ITrackExtrapolator.h"
#include "TrackInterfaces/IStateCreator.h"

class State;

class TrueStateCreator: public GaudiTool,
                        virtual public IStateCreator {
public:
  typedef IAssociator<MCParticle, MCHit>     MCHitAsct;
  typedef IAssociator<MCParticle, MCVeloHit> MCVeloHitAsct;

  TrueStateCreator( const std::string& type,
                    const std::string& name,
                    const IInterface* parent );

  virtual ~TrueStateCreator();

  virtual StatusCode initialize();

  virtual StatusCode createState( const MCParticle* mcPart,
                                  double zRec,
                                  State*& pState ) const;

  virtual StatusCode createStateVertex( const MCParticle* mcPart,
                                        State*& pState ) const;
private:
  
  double qOverP( const MCParticle* mcPart ) const;

  DeVelo* m_velo;                 

  MCVeloHitAsct* m_p2VeloHitAsct; 
  MCHitAsct*     m_p2ITHitAsct;   
  MCHitAsct*     m_p2OTHitAsct;   

  ITrackExtrapolator* m_extrapolator; 

  // Job options:
  std::string m_p2VeloHitAsctName; 
  std::string m_p2ITHitAsctName;   
  std::string m_p2OTHitAsctName;   
  std::string m_extrapolatorName;  
  double m_eX2;                    
  double m_eY2;                    
  double m_eTx2;                   
  double m_eTy2;                   
  double m_eP;                     
};


#endif // TRACKMCTOOLS_TRUESTATECREATOR_H

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