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//             LOW ENERGY MUON SPIN RELAXATION, ROTATION, RADIATION   Geant4 SIMULATION
//  ID    : LEMuSRTrackingAction.hh , v 1.0
//  AUTHOR: Taofiq PARAISO
//  DATE  : 2004-07-07 11:15
//                   
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
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//                           TRACKING ACTION.CC
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#ifndef LEMuSRTrackingAction_h
#define LEMuSRTrackingAction_h 1
#include "G4DynamicParticle.hh"
#include "G4UserTrackingAction.hh"
#include "G4Track.hh"
#include "globals.hh"

// root histogram classes
#include <stdlib.h>

#include "TROOT.h"
#include "TFile.h"
#include "TH1.h"
#include "TRandom.h"
#include "TTree.h"
#include "TBranch.h"
#include "TClonesArray.h"
#include "TStopwatch.h"
#include "LEMuSRCryoHit.hh"
#include "G4SteppingManager.hh"        // Include from 'tracking'
#include "G4TrackingManager.hh"        // Include from 'tracking'


/*!
 * The role of the tracking action is to take special actions 
 * before or after a track. 
 * Two importants methods can be implemented at will by the user, 
 * the PreUserTrackingAction and the PostUserTrackingAction. Those two methods are
 * virtual methods and their names must not be changed.
 * One can use the tracking action for histogramming, but also to act on the tracked
 * particles, to get/print information, or even to delete useless tracks etc.( cf. \ref Useraction).
 */

class LEMuSRTrackingAction : public G4UserTrackingAction {

 public:
  LEMuSRTrackingAction();
 ~ LEMuSRTrackingAction();
  void PreUserTrackingAction(const G4Track*);
  void PostUserTrackingAction(const G4Track*);

  void Collect_datas(const G4Track*);
  static LEMuSRTrackingAction* GetInstance();
  static LEMuSRTrackingAction* pointer;

 //  TROOT eventTree;
  Int_t nevent , comp , split , write , hfill , read ,arg4, arg5  ;
  TFile *myFile;
  TTree *myTree;
  TBranch *b;
  TH1D *hEnergy, *hTime, *hAngle, *hAngle2;

  G4TrackingManager* tMgr;

  G4double GyroMagRatio;
  G4double GyroMagFactor;

private:
 


};
#endif