TrackGenerator.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#ifndef O2_MID_TRACKGENERATOR_H
#define O2_MID_TRACKGENERATOR_H
 
#include <array>
#include <vector>
#include <random>
#include "DataFormatsMID/Track.h"
 
namespace o2
{
namespace mid
{
class TrackGenerator
{
 public:
  std::vector<Track> generate();
  std::vector<Track> generate(int nTracks);
 
  inline void setSeed(unsigned int seed) { mGenerator.seed(seed); }
 
  void setMeanTracksPerEvent(int meanTracksPerEvent) { mMeanTracksPerEvent = meanTracksPerEvent; }
  void setSlopeLimits(float slopeXmin, float slopeXmax, float slopeYmin, float slopeYmax)
  {
    mSlopeLimits = {{slopeXmin, slopeXmax, slopeYmin, slopeYmax}};
  }
  void setPositionLimits(float xMin, float xMax, float yMin, float yMax, float zMin, float zMax)
  {
    mPositionLimits = {{xMin, xMax, yMin, yMax, zMin, zMax}};
  }
 
 private:
  std::array<float, 4> getLimitsForAcceptance(std::array<float, 3> pos);
 
  int mMeanTracksPerEvent = 1;                                         
  std::array<float, 4> mSlopeLimits{{-0.2, 0.2, -0.5, 0.5}};           
  std::array<float, 6> mPositionLimits{{-2., 2, -2., 2., -5., 5.}};    
  std::default_random_engine mGenerator{std::default_random_engine()}; 
};
} // namespace mid
} // namespace o2
 
#endif /* O2_MID_TRACKGENERATOR_H */