GPUTRDInterfaceO2Track.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 GPUTRDINTERFACEO2TRACK_H
#define GPUTRDINTERFACEO2TRACK_H
 
// This is the interface for the GPUTRDTrack based on the O2 track type
#include "GPUCommonDef.h"
namespace o2::gpu
{
template <typename T>
class trackInterface;
template <typename T>
class GPUTRDTrack_t;
class GPUTPCGMMergedTrack;
namespace gputpcgmmergertypes
{
struct GPUTPCOuterParam;
} // namespace gputpcgmmergertypes
} // namespace o2::gpu
namespace o2::tpc
{
class TrackTPC;
}
namespace o2::dataformats
{
class TrackTPCITS;
}
 
#include "ReconstructionDataFormats/Track.h"
#include "ReconstructionDataFormats/TrackLTIntegral.h"
#include "CommonConstants/LHCConstants.h"
 
namespace o2::gpu
{
 
template <>
class trackInterface<o2::track::TrackParCov> : public o2::track::TrackParCov
{
 public:
  GPUdDefault() trackInterface() = default;
  trackInterface(const o2::track::TrackParCov& param) = delete;
  trackInterface(const GPUTRDTrack_t<o2::gpu::trackInterface<o2::track::TrackParCov>>& param) = delete;
  template <class T>
  GPUd() trackInterface(const T& trkSrc) : o2::track::TrackParCov(trkSrc.getParamOut())
  {
  }
 
  GPUd() void set(float x, float alpha, const float* param, const float* cov)
  {
    setX(x);
    setAlpha(alpha);
    for (int32_t i = 0; i < 5; i++) {
      setParam(param[i], i);
    }
    for (int32_t i = 0; i < 15; i++) {
      setCov(cov[i], i);
    }
  }
  GPUd() trackInterface(const GPUTPCGMMergedTrack& trk);
  GPUd() trackInterface(const gputpcgmmergertypes::GPUTPCOuterParam& param);
  GPUd() void updateCovZ2(float addZerror) { updateCov(addZerror, o2::track::CovLabels::kSigZ2); }
  GPUd() o2::track::TrackLTIntegral& getLTIntegralOut() { return mLTOut; }
  GPUd() const o2::track::TrackLTIntegral& getLTIntegralOut() const { return mLTOut; }
  GPUd() o2::track::TrackParCov& getOuterParam() { return mParamOut; }
  GPUd() const o2::track::TrackParCov& getOuterParam() const { return mParamOut; }
 
  GPUdi() const float* getPar() const { return getParams(); }
 
  GPUdi() bool CheckNumericalQuality() const { return true; }
 
  GPUdi() void setPileUpDistance(uint8_t bwd, uint8_t fwd) { setUserField((((uint16_t)bwd) << 8) | fwd); }
  GPUdi() bool hasPileUpInfo() const { return getUserField() != 0; }
  GPUdi() bool hasPileUpInfoBothSides() const { return getPileUpDistanceBwd() > 0 && getPileUpDistanceFwd() > 0; }
  GPUdi() uint8_t getPileUpDistanceBwd() const { return getUserField() >> 8; }
  GPUdi() uint8_t getPileUpDistanceFwd() const { return getUserField() & 255; }
  GPUdi() uint16_t getPileUpSpan() const { return ((uint16_t)getPileUpDistanceBwd()) + getPileUpDistanceFwd(); }
  GPUdi() float getPileUpMean() const { return hasPileUpInfoBothSides() ? 0.5f * (getPileUpDistanceFwd() + getPileUpDistanceBwd()) : getPileUpDistanceFwd() + getPileUpDistanceBwd(); }
  GPUdi() float getPileUpTimeShiftMUS() const { return getPileUpMean() * o2::constants::lhc::LHCBunchSpacingMUS; }
  GPUdi() float getPileUpTimeErrorMUS() const { return getPileUpSpan() * o2::constants::lhc::LHCBunchSpacingMUS / 3.4641016f; }
 
  typedef o2::track::TrackParCov baseClass;
 
 private:
  o2::track::TrackLTIntegral mLTOut;
  o2::track::TrackParCov mParamOut;
 
  ClassDefNV(trackInterface, 1);
};
 
} // namespace o2::gpu
 
#endif