TrigmuCombHypoAlg.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "TrigmuCombHypoAlg.h"
 
#include "TrigCompositeUtils/TrigCompositeUtils.h"
#include "TrigSteeringEvent/TrigRoiDescriptorCollection.h"
#include "AthViews/ViewHelper.h"
 
using namespace TrigCompositeUtils; 
 
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TrigmuCombHypoAlg::TrigmuCombHypoAlg( const std::string& name,
                      ISvcLocator* pSvcLocator ) :
  ::HypoBase( name, pSvcLocator )
{} 
 
 
StatusCode TrigmuCombHypoAlg::initialize()
{
  ATH_CHECK(m_hypoTools.retrieve());
 
  renounce(m_muCombKey);
  ATH_CHECK(m_muCombKey.initialize());
 
  return StatusCode::SUCCESS;
}
 
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StatusCode TrigmuCombHypoAlg::execute(const EventContext& context) const
{
  // common for all Hypos, to move in the base class
  ATH_MSG_DEBUG("StatusCode TrigmuCombHypoAlg::execute start");
  auto previousDecisionsHandle = SG::makeHandle( decisionInput(), context);
  ATH_CHECK( previousDecisionsHandle.isValid() );
  ATH_MSG_DEBUG( "Running with "<< previousDecisionsHandle->size() <<" previous decisions");
 
  // new output decisions
  SG::WriteHandle<DecisionContainer> outputHandle = createAndStore(decisionOutput(), context ); 
  auto decisions = outputHandle.ptr();
  // end of common
 
  std::vector<TrigmuCombHypoTool::CombinedMuonInfo> toolInput;
  // loop over previous decisions
  size_t counter = 0; 
 
  for ( const auto previousDecision: *previousDecisionsHandle )  {
    // get View
    ATH_CHECK( previousDecision->hasObjectLink(viewString()) );
    auto viewEL = previousDecision->objectLink<ViewContainer>(viewString());
    ATH_CHECK( viewEL.isValid() );
 
    // get info
    auto muCombHandle = ViewHelper::makeHandle( *viewEL, m_muCombKey, context );
    ATH_CHECK( muCombHandle.isValid() );
    ATH_MSG_DEBUG( "Muinfo handle size: " << muCombHandle->size() << "...");
 
    // loop over muCombs (more than one muon can be found by L2 inside-out algos)
    for(uint i=0; i<muCombHandle->size(); i++){
      auto muCombEL = ViewHelper::makeLink( *viewEL, muCombHandle, i );
      ATH_CHECK( muCombEL.isValid() );
      const xAOD::L2CombinedMuon* muComb = *muCombEL;
      const xAOD::L2StandAloneMuon* muFast = muComb->muSATrack();
 
      // create new decisions
      auto newd = newDecisionIn( decisions, hypoAlgNodeName() );
 
      toolInput.emplace_back( TrigmuCombHypoTool::CombinedMuonInfo{ newd, muComb, muFast, previousDecision} );
 
      // set objectLink
      newd->setObjectLink( featureString(), muCombEL );
      TrigCompositeUtils::linkToPrevious( newd, previousDecision, context);
 
      //set roi link (to use same roi in EF CB step)
      auto roiLink = TrigCompositeUtils::findLink<TrigRoiDescriptorCollection>(newd, "roi");
      newd->setObjectLink(m_roiLinkName.value(), roiLink.link);
 
      // DEBUG
      ATH_MSG_DEBUG("REGTEST: muCBTrack pt in " << m_muCombKey.key() << " = " << (*muCombEL)->pt()/Gaudi::Units::GeV << " GeV");
      ATH_MSG_DEBUG("REGTEST: muCBTrack eta/phi in " << m_muCombKey.key() << " = " << (*muCombEL)->eta() << "/" << (*muCombEL)->phi());
      ATH_MSG_DEBUG("Added view, features, previous decision to new decision "<<counter <<" for view "<<(*viewEL)->name()  );
 
      counter++;
    }
  }
  for ( auto & tool: m_hypoTools ) {
    ATH_MSG_DEBUG("Go to " << tool);
    ATH_CHECK( tool->decide( toolInput ) );
  }
 
  ATH_CHECK(hypoBaseOutputProcessing(outputHandle));
 
  ATH_MSG_DEBUG("StatusCode TrigmuCombHypoAlg::execute success");
  return StatusCode::SUCCESS;
}
 
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