V0Trigger.h

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/* Copyright (C) 2023 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Volker Friese [committer] */
 
#pragma once  // include this header only once per compilation unit
 
#include "CaTrack.h"
#include "CaVector.h"
#include "V0TriggerConfig.h"
 
#include <utility>
#include <vector>
 
#include <xpu/host.h>
 
namespace cbm::algo::evbuild
{
 
 
  struct V0TriggerMoniData {
    size_t errTracksUnsorted{0};
    size_t numTrackPairs{0};
    size_t numTrackPairsAfterTimeCut{0};
    size_t numTrackPairsAfterZCut{0};
    size_t numTrackPairsAfterDistCut{0};
    xpu::timings time;  
  };
 
  class V0Trigger {
 
   public:
    typedef std::pair<std::vector<double>, V0TriggerMoniData> Result;
    typedef cbm::algo::ca::Track Track;
    typedef cbm::algo::ca::Vector<cbm::algo::ca::Track> TrackVector;
    typedef cbm::algo::kf::TrackParamS TrackParam;
 
    V0Trigger() = default;
 
    Result operator()(const TrackVector& tracks, const V0TriggerConfig& config) const;
 
    std::string ToString() const;
 
 
   private:
    std::pair<double, double> CalcPCA(const TrackParam& track1, const TrackParam& track2) const;
 
    bool Select(const Track& track, const V0TriggerConfig& config) const;
 
    bool IsPrimary(const TrackParam& track, const V0TriggerConfig& config) const;
  };
 
}  // namespace cbm::algo::evbuild