df/d00/GPUTPCBaseTrackParam_8h_source.html

// Copyright CERN and copyright holders of ALICE O2. This software is

// distributed under the terms of the GNU General Public License v3 (GPL

// Version 3), copied verbatim in the file "COPYING".

//

// See http://alice-o2.web.cern.ch/license for full licensing information.

//

// 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 GPUTPCBASETRACKPARAM_H

#define GPUTPCBASETRACKPARAM_H


constexpr double GPUCA_MAX_SIN_PHI = 0.99;


class GPUTPCTrackParam;


class GPUTPCBaseTrackParam

{

 public:

  double X() const { return mX; }

  double Y() const { return mP[0]; }

  double Z() const { return mP[1]; }

  double SinPhi() const { return mP[2]; }

  double DzDs() const { return mP[3]; }

  double QPt() const { return mP[4]; }

  double ZOffset() const { return mZOffset; }


  double GetX() const { return mX; }

  double GetY() const { return mP[0]; }

  double GetZ() const { return mP[1]; }

  double GetSinPhi() const { return mP[2]; }

  double GetDzDs() const { return mP[3]; }

  double GetQPt() const { return mP[4]; }

  double GetZOffset() const { return mZOffset; }


  double GetKappa(double Bz) const { return -mP[4] * Bz; }


  const double* Par() const { return mP; }

  const double* GetPar() const { return mP; }

  double GetPar(int i) const { return (mP[i]); }


  void SetPar(int i, double v) { mP[i] = v; }


  void SetX(double v) { mX = v; }

  void SetY(double v) { mP[0] = v; }

  void SetZ(double v) { mP[1] = v; }

  void SetSinPhi(double v) { mP[2] = v; }

  void SetDzDs(double v) { mP[3] = v; }

  void SetQPt(double v) { mP[4] = v; }

  void SetZOffset(double v) { mZOffset = v; }


 private:

  // WARNING, Track Param Data is copied in the GPU Tracklet Constructor element by element instead of using copy constructor!!!

  // This is neccessary for performance reasons!!!

  // Changes to Elements of this class therefore must also be applied to TrackletConstructor!!!

  double mX; // x position

  double mZOffset;

  double mP[5]; // 'active' track parameters: Y, Z, SinPhi, DzDs, q/Pt

};


#endif