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//
/// \file errorpropagation/include/ExErrorMagneticField.hh
/// \brief Definition of the ExErrorMagneticField class
//

#ifndef ExErrorMagneticField_H
#define ExErrorMagneticField_H

#include "G4UniformMagField.hh"

class G4FieldManager;

/// Magnetic field class
///
/// A uniform 1 kilogauss field along the Z axis
///
/// History:
/// Created:   May 2007
/// \author   P. Arce 
//------------------------------------------------------------------------

class ExErrorMagneticField: public G4UniformMagField
{
  public:
  
   ExErrorMagneticField(G4ThreeVector);  //  The value of the field
   ExErrorMagneticField();               //  A zero field
      
   //Set the field (0,0,fieldValue)
   void SetFieldValue(G4double fieldValue);
   void SetFieldValue(G4ThreeVector fieldVector);

protected:

  // Find the global Field Manager
  G4FieldManager* GetGlobalFieldManager();   // static 
};

#endif
