basic/B2/B2a/src/B2MagneticField.cc

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// $Id$
//

#include "B2MagneticField.hh"

#include "G4FieldManager.hh"
#include "G4TransportationManager.hh"

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B2MagneticField::B2MagneticField()
  : G4UniformMagField(G4ThreeVector())
{
  GetGlobalFieldManager()->SetDetectorField(NULL);
}

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B2MagneticField::B2MagneticField(G4ThreeVector fieldVector)
  : G4UniformMagField(fieldVector)
{
  GetGlobalFieldManager()->SetDetectorField(this);    
  GetGlobalFieldManager()->CreateChordFinder(this);
}

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B2MagneticField::~B2MagneticField()
{}

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// Set the value of the Global Field to fieldValue along X

void B2MagneticField::SetMagFieldValue(G4double fieldValue)
{
   SetMagFieldValue(G4ThreeVector(fieldValue,0,0));
}

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// Set the value of the Global Field

void B2MagneticField::SetMagFieldValue(G4ThreeVector fieldVector)
{
  if( fieldVector != G4ThreeVector(0.,0.,0.) )
  {
    SetFieldValue(fieldVector);
    GetGlobalFieldManager()->SetDetectorField(this);
    GetGlobalFieldManager()->CreateChordFinder(this);
  } else
    GetGlobalFieldManager()->SetDetectorField(NULL);
}

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G4FieldManager*  B2MagneticField::GetGlobalFieldManager()
{
  return G4TransportationManager::GetTransportationManager()->GetFieldManager();
}

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