AbsBField.h

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/* Copyright 2008-2010, Technische Universitaet Muenchen,
   Authors: Christian Hoeppner & Sebastian Neubert & Johannes Rauch

   This file is part of GENFIT.

   GENFIT is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   GENFIT is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with GENFIT.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef genfit_AbsBField_h
#define genfit_AbsBField_h

#include <TVector3.h>

namespace genfit {

class AbsBField {
 public:
  AbsBField() { ; }
  virtual ~AbsBField() { ; }

  virtual TVector3 get(const TVector3 &position) const = 0;

  virtual void get(const double &posX, const double &posY, const double &posZ, double &Bx, double &By, double &Bz) const
  {
    const TVector3 &B(this->get(TVector3(posX, posY, posZ)));
    Bx = B.X();
    By = B.Y();
    Bz = B.Z();
  }
};

} /* End of namespace genfit */
#endif // genfit_AbsBField_h