GFAbsEnergyLoss.h

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/* Copyright 2008-2009, Technische Universitaet Muenchen,
   Authors: Christian Hoeppner & Sebastian Neubert

   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 GFABSENERGYLOSS_H
#define GFABSENERGYLOSS_H

#include "TMatrixT.h"
#include "TObject.h"

class TVector3;

namespace genf {

  class GFAbsEnergyLoss : public TObject {
  public:

    virtual double energyLoss(const double& step,
                              const double& mom,
                              const int& pdg,
                              const double& matDensity,
                              const double& matZ,
                              const double& matA,
                              const double& radiationLength,
                              const double& meanExcitationEnergy,
                              const bool& doNoise = false,
                              TMatrixT<Double_t>* noise = NULL,
                              const TMatrixT<Double_t>* jacobian = NULL,
                              const TVector3* directionBefore = NULL,
                              const TVector3* directionAfter = NULL) = 0;
    virtual ~GFAbsEnergyLoss();

  protected:
    void getParticleParameters(const int& pdg, double& charge, double& mass);
    double getParticleMass(const int& pdg);

    // public:
    //ClassDef(GFAbsEnergyLoss,1);
  };

} // namespace genf
#endif