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// $Id: SteppingAction.cc,v 1.5 2007/01/18 09:07:20 hbu Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
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#include "SteppingAction.hh"
#include "RunAction.hh"
#include "G4SteppingManager.hh"
#include "G4VProcess.hh"
#include "G4ParticleTypes.hh"
#include "G4UnitsTable.hh"
#include "HistoManager.hh"

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SteppingAction::SteppingAction(RunAction* RuAct, HistoManager* histo)
:runAction(RuAct), histoManager(histo)
{ }

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SteppingAction::~SteppingAction()
{ }

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void SteppingAction::UserSteppingAction(const G4Step* aStep)
{
 const G4VProcess* process = aStep->GetPostStepPoint()->GetProcessDefinedStep();
 if (process == 0) return;
 G4String processName = process->GetProcessName();
 static G4int iCalled=0;
 const  G4int nprint=0; // set to 10 to get debug print for first 10 calls

 if (processName == "SynRad")
 {
   iCalled++;
   G4StepPoint* PrePoint = aStep->GetPreStepPoint();
   G4TrackVector* secondary = fpSteppingManager->GetSecondary();

   //(*secondary)[lp-1]  points to the last photon generated
   //   
   size_t lp=(*secondary).size();
   if (lp)
   {
     G4double  Egamma =  (*secondary)[lp-1]->GetTotalEnergy();
     runAction->n_gam_sync++;
     runAction->e_gam_sync += Egamma;
     runAction->e_gam_sync2 += Egamma*Egamma;
     if (Egamma > runAction->e_gam_sync_max) runAction->e_gam_sync_max = Egamma;
     runAction->lam_gam_sync += aStep->GetStepLength();
     if (iCalled<nprint)
     {
       G4double      Eelec  = PrePoint->GetTotalEnergy();
       G4ThreeVector Pelec  = PrePoint->GetMomentum();
       G4ThreeVector PGamma = (*secondary)[lp-1]->GetMomentum();
       G4bool IsGamma = 
            ((*secondary)[lp-1]->GetDefinition() == G4Gamma::GammaDefinition());
	    
       G4cout << "UserSteppingAction processName=" << process->GetProcessName()
         << " Step Length=" << std::setw(6) 
	                    << G4BestUnit(aStep->GetStepLength(),"Length")
         << " Eelec=" << G4BestUnit(Eelec,"Energy")
         << " Pelec=" << G4BestUnit(Pelec,"Energy")
         << " IsGamma=" << IsGamma
         << " Egamma=" << G4BestUnit(Egamma,"Energy")
         << " PGamma=" << G4BestUnit(PGamma,"Energy")
         << " #secondaries lp=" << lp
         << '\n';
	 }
     histoManager->FillHisto(1,Egamma);
     histoManager->FillHisto(2,Egamma,Egamma/keV); // power spectrum : gamma weighted with its energy
     histoManager->FillHisto(3,aStep->GetStepLength());
   }
 }

}

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