/*
 * TrkDedxVsRigHistoAction.h
 *
 *  Created on: 9-giu-2009
 *      Author: Nicola Mori
 */

/*! @file TrkDedxVsRigHistoAction.h The TrkDedxVsRigHistoAction class declaration file. */

#include "../CollectionAction/CollectionAction.h"
#include <TH2F.h>

#ifndef TRKDEDXVSRIGHISTOACTION_H_
#define TRKDEDXVSRIGHISTOACTION_H_

/*! @brief An action that fills a TRK dE/dx Vs rigidity histogram. */
class TrkDedxVsRigHistoAction: public CollectionAction {
public:

  /*! @brief Constructor.
   * *
   * @param actionName The action's name.
   * @param outFileName The output file name.
   * @param mode The mode of ROOT file creation (see documentation of TFile constructor
   *             in ROOT's reference guide).
   * @param minDedx The lower limit for dE/dx axis (in MIP).
   * @param maxDedx The upper limit for dE/dx axis (in MIP).
   * @param nBinsDedx The number of dE/dx bins.
   * @param minR The lower limit for rigidity axis (in GV).
   * @param maxR The upper limit for rigidity axis (in GV).
   * @param nBinsR The number of rigidity bins.
   */
  TrkDedxVsRigHistoAction(const char *actionName, TString outFileName, TString mode = "UPDATE", float minDedx = 0.,
      float maxDedx = 50., unsigned int nBinsDedx = 100, float minR = -100., float maxR = 100., unsigned int nBinsR = 100);

  /*! @brief Destructor. */
  ~TrkDedxVsRigHistoAction() {
  }

  /*! @brief Fills histogram with the selected event.
   *
   * @param event The selected event.
   */
  void OnGood(PamLevel2 *event);

  /*! @brief Writes the histogram to the output ROOT file.*/
  void Finalize();
private:

  TString _outFileName;
  TH2F _histo;
  TString _mode;

};
#endif /* TRKDEDXVSRIGHISTOACTION_H_ */