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// $Id: G4PolarizationManager.cc,v 1.1 2006/09/21 21:35:11 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// GEANT4 Class file
//
//
// File name:     G4PolarizationManager
//
// Author:        Andreas Schaelicke
//
// Creation date: 01.05.2005
//
// Modifications:
//
// Class Description:
//
// Provides polarization information for logical volumes, and some basic 
// transformation routines.
//
#include "G4PolarizationManager.hh"
#include "G4PolarizationMessenger.hh"
#include "G4StokesVector.hh"

#include "G4LogicalVolume.hh"

G4PolarizationManager * G4PolarizationManager::instance = 0;

G4PolarizationManager* G4PolarizationManager::GetInstance()
{
  if (instance == 0) instance = new G4PolarizationManager();
  return instance;
}

void G4PolarizationManager::Dispose()
{
  if (instance != 0)
  {
    delete instance;
    instance = 0;
  }
}

G4PolarizationManager::G4PolarizationManager()
  : messenger(0), verboseLevel(0), activated(true)
{
  messenger = new G4PolarizationMessenger(this);  
}

G4PolarizationManager::~G4PolarizationManager()
{  
}

void G4PolarizationManager::ListVolumes()
{
  if (volumePolarizations.size()==0) return;
  G4cout<<" Polarization for "<<volumePolarizations.size()
	<<" registered volume(s) : "<<G4endl;
  if (!activated) 
    G4cout<<" but polarization deactivated "<<G4endl;
  for (PolarizationMap::const_iterator cit=volumePolarizations.begin();
       cit!=volumePolarizations.end();cit++) {
    G4cout<<cit->first->GetName()<<" : "<<cit->second<<G4endl;
  }
}

void G4PolarizationManager::SetVolumePolarization(G4LogicalVolume* lVol, const G4ThreeVector & pol)
{
  volumePolarizations[lVol]=pol;
  if (verboseLevel>=1) G4cout<<" SetVolumePolarization "
			     <<lVol->GetName()<<" "
			     <<pol<<G4endl;
}

void G4PolarizationManager::SetVolumePolarization(const G4String & lVolName, const G4ThreeVector & pol)
{
  for (PolarizationMap::iterator it=volumePolarizations.begin();
       it!=volumePolarizations.end();it++) {
    if (it->first->GetName()==lVolName) {
      it->second=pol;
      if (verboseLevel>=1) G4cout<<" SetVolumePolarization "
				 <<lVolName<<" "
				 <<pol<<G4endl;
      return;
    }
  }
  G4cout<<" logical volume '"<<lVolName<<"'not registerd yet \n"
	<<" please register before using '/polarization/volume/set' "<<G4endl;
}

