G4IBField.h

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//--------------------------------------------------------------
// G4IBField.h
//
//--------------------------------------------------------------
#ifndef G4IBFIELD_H
#define G4IBFIELD_H
#ifndef CASSERT
#include <cassert>
#define CASSERT
#endif
//======================================================================
#ifdef SITE_HAS_GEANT4

#include "G4MagneticField.hh" // GEANT4
class BField; // MINOS BField class

class G4IBField : public G4MagneticField 
{
 public:
  G4IBField(BField* f) : fMINOSBField(f) { assert(f); }
  
  virtual void GetFieldValue(const double Point[], double Bfield[]) const;
  
 private:
  BField* fMINOSBField; // The MINOS BField - not owner
};

//======================================================================
#else // SITE_HAS_GEANT4
class BField; // MINOS BField class
class G4IBField 
{
public:
  G4IBField(BField* f) { }
  virtual void GetFieldValue(const double Point[], double Bfield[]) const {
    assert("G4IBField.h: Program compiled w/o GEANT4 support"=0);
  }
};
#endif // SITE_HAS_GEANT4
#endif // G4IBFIELD_H

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