Geant4Field.h

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// $Id$
//==========================================================================
//  AIDA Detector description implementation for LCD
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : M.Frank
//
//==========================================================================

#ifndef DD4HEP_DDG4_GEANT4FIELD_H
#define DD4HEP_DDG4_GEANT4FIELD_H

// Framework include files
#include "DD4hep/LCDD.h"

// Geant 4 include files
#include "G4ElectroMagneticField.hh"
#include "G4MagneticField.hh"

namespace DD4hep {

  namespace Simulation {

    // Forward declarations
    class Geant4Field;


    class Geant4Field : public G4MagneticField {
    protected:
      Geometry::OverlayedField m_field;

    public:
      Geant4Field(Geometry::OverlayedField field)
        : m_field(field) {
      }
      virtual ~Geant4Field() {
      }
      virtual void GetFieldValue(const double pos[4], double *arr) const;
      virtual G4bool DoesFieldChangeEnergy() const;
    };

  }    // End namespace Simulation
}      // End namespace DD4hep
#endif // DD4HEP_DDG4_GEANT4FIELD_H