FieldBuilder.h

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#ifndef SimG4Core_FieldBuilder_H
#define SimG4Core_FieldBuilder_H

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include <memory>

class MagneticField;
class CMSFieldManager;
class G4Mag_UsualEqRhs;
class G4PropagatorInField;
class G4LogicalVolume;

namespace sim {
  class Field;
  class FieldBuilder {

  public:

    FieldBuilder(const MagneticField*, const edm::ParameterSet&);

    ~FieldBuilder();

    void build(CMSFieldManager* fM, G4PropagatorInField* fP);

    void configureForVolume( const std::string& volName, 
                 edm::ParameterSet& volPSet,
                 CMSFieldManager * fM,
                 G4PropagatorInField * fP);

  private:

    Field* theField;
    G4Mag_UsualEqRhs *theFieldEquation;
    G4LogicalVolume  *theTopVolume;  
    edm::ParameterSet thePSet;
    double delta;
  };
};

#endif