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// 
// File: Ext_track.h
//
// Description: Ext_track class.
// 
// Author: L.L.Wang
// 
// Creation: 2005.3.7
// Version: v1
//
// $Id: Ext_track.h,v 1.11 2015/07/29 00:28:14 sunss Exp $
//
// Revision history
// 
// 

#ifndef _EXT_TRACK_FLAG_
#define _EXT_TRACK_FLAG_

//class  Hep3Vector;

#include        <string>

#include        "TrkExtAlg/Ext_xp_err.h"

#include        "G4VUserPhysicsList.hh"
#include        "G4VUserDetectorConstruction.hh"  
#include        "G4VPhysicalVolume.hh"
#include        "G4Track.hh"
#include        "G4TrackingManager.hh"

#include        "TrkExtAlg/ExtSteppingAction.h"

class G4RunManagerKernel;

class Ext_track {

public:

  // Default constructor.
  Ext_track();
  Ext_track(const bool msgFlag, const bool myBFieldOn, const bool GeomOptimization,const int m_detVer,const bool UseMucKal,const int MucWindow);

  // Destructor.
  ~Ext_track();

// Public member functins.

  //Initialization of the object. par -- Options.
  void Initialization( const bool aMsgFlag,const bool Bfield,const bool GeomOptimization,const bool aUseMucKal,const int aMucWindow);

//  bool Set_errskip_list( const char* errskip_list );

//  void Prn_errskip_list() const;

  // Set the starting point of the track extrapolation.
     //   xv3 -- Starting position(x,y,z)
     //   pv3 -- Starting momentum(px,py,pz)
     //   err -- Starting error matrix(x,y,z,px,py,pz)
     //   particleName - Assumed particle's name
     // 
  bool Set( const Hep3Vector &xv3, const Hep3Vector &pv3, const HepSymMatrix &err, 
           const std::string &particleName, const double pathInMDC, const double tofInMdc );

  //Perform the actual extrapolation and write the result of the extrapolation to TDS.
  void TrackExtrapotation();

   
//  void End();

  inline void Dir( const int dir );

  inline ExtSteppingAction *GetStepAction() {return extSteppingAction;};
   
   
private:
  // Geometry Initialization
  bool GeometryInitialization();

  // Physics Initialization   
  bool PhysicsInitialization();

  // CheckRegions
  void CheckRegions();
  
  // Check Vertex is Inside the setup 
  bool CheckVertexInsideWorld(const Hep3Vector& pos);
   
 // Commonly used data in member functions.

  Ext_xp_err    m_xp_err;

  bool          myMsgFlag;
  bool          myGeomOptimization;
  bool          myBFieldOn;
  int           m_detVer;
  bool          myUseMucKal;
  int           myMucWindow;
  float         m_vect[7];
  int           m_dir;

  // Error calculation skip data.

 // Ext_list    m_errskip_list;
 // bool                m_errskip_flag;
 // int         m_errskip_level;
 // int         m_errskip_iname;

  // Bes3DetectorConstruction 
  G4VUserDetectorConstruction* bes3DetectorConstruction;
  G4VPhysicalVolume* bes3WorldVolume;
   
  // ExtPhysicsList
  G4VUserPhysicsList* extPhysicsList;   

  //G4Track
  G4Track* extTrack; 

  // ExtSteppingAction
  ExtSteppingAction* extSteppingAction;

  //Tracking Manager
  G4TrackingManager* extTrackingManager;

  //RunManagerKernel for geant4.9.0
  G4RunManagerKernel *extRunManagerKernel;
};



/*
  Inline function.
*/

// Modifiers.

inline void Ext_track::Dir( const int dir ){ m_dir = dir; }

#endif  /* _EXT_TRACK_FLAG_ */

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