Strip.cxx

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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.
 
//
//  Strip.cxx: structure to store the TOF digits in strips - useful
// for clusterization purposes
//  ALICEO2
//
#include <cstring>
#include <tuple>
 
#include <TMath.h>
#include <TObjArray.h>
 
#include "TOFBase/Strip.h"
 
using namespace o2::tof;
 
ClassImp(o2::tof::Strip);
 
int Strip::mDigitMerged = 0;
 
//_______________________________________________________________________
Strip::Strip(Int_t index)
  : mStripIndex(index)
{
}
//_______________________________________________________________________
Int_t Strip::addDigit(Int_t channel, Int_t tdc, Int_t tot, uint64_t bc, Int_t lbl, uint32_t triggerorbit, uint16_t triggerbunch, float geanttime, double t0)
{
 
  // return the MC label. We pass it also as argument, but it can change in
  // case the digit was merged
 
  auto key = Digit::getOrderingKey(channel, bc, tdc); // the digits are ordered first per channel, then inside the channel per BC, then per time
  auto dig = findDigit(key);
  if (dig) {
    lbl = dig->getLabel(); // getting the label from the already existing digit
    if (dig->merge(tdc, tot)) { // merging to the existing digit (if new came first upload also MC truth)
      dig->setTgeant(geanttime);
      dig->setT0true(t0);
    }
    mDigitMerged++;
  } else {
    mDigits.emplace(std::make_pair(key, Digit(channel, tdc, tot, bc, lbl, triggerorbit, triggerbunch, geanttime, t0)));
  }
 
  return lbl;
}
 
//______________________________________________________________________
void Strip::fillOutputContainer(std::vector<Digit>& digits)
{
  // transfer digits that belong to the strip to the output array of digits
  // we assume that the Strip has stored inside only digits from one readout
  // window --> we flush them all
 
  if (mDigits.empty()) {
    return;
  }
  auto itBeg = mDigits.begin();
  auto iter = itBeg;
  for (; iter != mDigits.end(); ++iter) {
    Digit& dig = iter->second;
    digits.emplace_back(dig);
  }
 
  //  if (iter!=mDigits.end()) iter--;
  mDigits.erase(itBeg, iter);
}