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// 
// $Id: PhysicsList.cc,v 1.2 2006/10/02 16:25:55 vnivanch Exp $
// GEANT4 tag $Name:  $
//
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#include "PhysicsList.hh"
#include "PhysicsListMessenger.hh"
 
#include "PhysListEmStandard.hh"
#include "PhysListEmPolarized.hh"

#include "G4LossTableManager.hh"
#include "G4UnitsTable.hh"

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PhysicsList::PhysicsList() 
: G4VModularPhysicsList()
{
  G4LossTableManager::Instance();
  
  currentDefaultCut   = 0.1*mm;
  cutForGamma         = currentDefaultCut;
  cutForElectron      = currentDefaultCut;
  cutForPositron      = currentDefaultCut;

  pMessenger = new PhysicsListMessenger(this);

  SetVerboseLevel(1);

  emName = "polarized";
  emPhysicsList = new PhysListEmPolarized();

}

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PhysicsList::~PhysicsList()
{
  delete pMessenger;
}

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// Bosons
#include "G4Gamma.hh"

// leptons
#include "G4Electron.hh"
#include "G4Positron.hh"


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void PhysicsList::ConstructParticle()
{
  // only QED in this example

// gamma
  G4Gamma::GammaDefinition();
  
// leptons
  G4Electron::ElectronDefinition();
  G4Positron::PositronDefinition();
}

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#include "G4EmProcessOptions.hh"

void PhysicsList::ConstructProcess()
{
  // Transportation
  //
  AddTransportation();

  // Electromagnetic physics list
  //
  emPhysicsList->ConstructProcess();
    
  // step limitation (as a full process)
  //  
  AddStepMax();      
}

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void PhysicsList::AddPhysicsList(const G4String& name)
{
  if (verboseLevel>0) {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">" << G4endl;
  }
  
  if (name == emName) return;

  if (name == "standard") {

    emName = name;
    delete emPhysicsList;
    emPhysicsList = new PhysListEmStandard();
            
  } 
  if (name == "polarized") {

    emName = name;
    delete emPhysicsList;
    emPhysicsList = new PhysListEmPolarized();
            
  } 
  else {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">"
           << " is not defined"
           << G4endl;
  }
}

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#include "G4ProcessManager.hh"
#include "StepMax.hh"

void PhysicsList::AddStepMax()
{
  // Step limitation seen as a process
  StepMax* stepMaxProcess = new StepMax();

  theParticleIterator->reset();
  while ((*theParticleIterator)()){
      G4ParticleDefinition* particle = theParticleIterator->value();
      G4ProcessManager* pmanager = particle->GetProcessManager();

      if (stepMaxProcess->IsApplicable(*particle) && pmanager)
	  pmanager ->AddDiscreteProcess(stepMaxProcess);
  }
}


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#include "G4Gamma.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"

void PhysicsList::SetCuts()
{    
  // set cut values for gamma at first and for e- second and next for e+,
  // because some processes for e+/e- need cut values for gamma
  SetCutValue(cutForGamma, "gamma");
  SetCutValue(cutForElectron, "e-");
  SetCutValue(cutForPositron, "e+");
}

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void PhysicsList::SetCutForGamma(G4double cut)
{
  cutForGamma = cut;
  SetParticleCuts(cutForGamma, G4Gamma::Gamma());
}

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void PhysicsList::SetCutForElectron(G4double cut)
{
  cutForElectron = cut;
  SetParticleCuts(cutForElectron, G4Electron::Electron());
}

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void PhysicsList::SetCutForPositron(G4double cut)
{
  cutForPositron = cut;
  SetParticleCuts(cutForPositron, G4Positron::Positron());
}

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