Trigger/TrigMonitoring/TrigMinBiasMonitoring/src/Utils.cxx

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/*
Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#include "Utils.h"
 
namespace Utils {
double z0wrtPV(const xAOD::TrackParticle* trk, const xAOD::Vertex* vtx) {
  return (trk->z0() + trk->vz() - vtx->z()) * std::sin(trk->theta());
}
 
const xAOD::Vertex* selectPV(SG::ReadHandle<xAOD::VertexContainer>& container) {
  if (not container.isValid()) {
    return nullptr;
  }
 
  for (const xAOD::Vertex* vtx : *container) {
    if (vtx->vertexType() == xAOD::VxType::PriVtx) {
      return vtx;
    }
  }
 
  return nullptr;
}
 
const xAOD::Jet* findLeadingJet(SG::ReadHandle<xAOD::JetContainer>& container) {
  auto compareJetPt = [](const auto& jet1, const auto& jet2) { return jet1->pt() < jet2->pt(); };
 
  const auto leadingJet = std::max_element(container->begin(), container->end(), compareJetPt);
  if (leadingJet == container->end()) {
    return nullptr;
  }
 
  return *leadingJet;
}
 
}  // namespace Utils