HitFinder.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_HITFINDER_H
#define O2_MID_HITFINDER_H
 
#include "MathUtils/Cartesian.h"
#include "DataFormatsMID/Cluster.h"
#include "DataFormatsMID/Track.h"
#include "MIDBase/GeometryTransformer.h"
 
namespace o2
{
namespace mid
{
class HitFinder
{
 public:
  HitFinder(const GeometryTransformer& geoTrans);
 
  ~HitFinder() = default;
 
  const GeometryTransformer& getGeometryTransformer() const { return mGeometryTransformer; }
 
  std::vector<int> getFiredDE(const Track& track, int chamber) const;
 
  std::vector<Cluster> getLocalPositions(const Track& track, int chamber, bool withUncertainties = false) const;
 
 private:
  math_utils::Point3D<double> getIntersectInDefaultPlane(const Track& track, int chamber) const;
 
  Cluster getIntersect(const Track& track, int deId) const;
 
  int guessRPC(double yPos, int chamber) const;
 
  void addUncertainty(Cluster& cl, Track track) const;
 
  GeometryTransformer mGeometryTransformer; 
  const double mTanTheta;                   
  const double mCosTheta;                   
};
} // namespace mid
} // namespace o2
 
#endif /* O2_MID_HITFINDER_H */