EventShapeCopier.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
// EventShapeCopier.cxx 
 
#include "EventShapeTools/EventShapeCopier.h"
 
#include "xAODEventShape/EventShape.h"
#include "xAODEventShape/EventShapeAuxInfo.h"
#include "AsgDataHandles/ReadHandle.h"
#include "AsgDataHandles/WriteHandle.h"
#include "AthContainers/Accessor.h"
#include "AthContainers/ConstAccessor.h"
 
//**********************************************************************
 
EventShapeCopier::EventShapeCopier(const std::string& name)
: asg::AsgTool(name),
  m_inputEventShape("LCTopoEventShape"), m_outputEventShape(""), m_eventDensityName("") {
  declareProperty("InputEventShape",    m_inputEventShape  );
  declareProperty("OutputEventShape",    m_outputEventShape  );
  declareProperty("EventDensityName",    m_eventDensityName  );
  
}
 
//**********************************************************************
 
EventShapeCopier::~EventShapeCopier() {}
 
//**********************************************************************
 
StatusCode EventShapeCopier::initialize() {
 
  // Handles
  ATH_CHECK( m_inputEventShape.initialize() );
  ATH_CHECK( m_outputEventShape.initialize() );
  m_outputEventShapeIn = m_outputEventShape.key();
  ATH_CHECK( m_outputEventShapeIn.initialize() );
 
  return StatusCode::SUCCESS;
}
 
//**********************************************************************
 
StatusCode EventShapeCopier::fillEventShape() const {
  
  ATH_MSG_DEBUG("Begin fillEventShape()");
 
  // check if not already existing
  auto handle_inOut = SG::makeHandle (m_outputEventShapeIn);
  if ( handle_inOut.isValid() ) {
    ATH_MSG_WARNING( "EventShape with key "<< m_outputEventShapeIn.key() << " already exists. Not overwriting it." );
    return StatusCode::SUCCESS;
  }
 
  xAOD::EventShape *evs = new xAOD::EventShape();
  std::unique_ptr<xAOD::EventShape> evs_ptr(evs);
 
  xAOD::EventShapeAuxInfo* evsaux = new xAOD::EventShapeAuxInfo();
  std::unique_ptr<xAOD::EventShapeAuxInfo> evsaux_ptr( evsaux);
  evs->setStore( evsaux );
 
  ATH_CHECK(fillEventShape(evs));  
 
  auto h_out = makeHandle(m_outputEventShape);
  if ( ! h_out.record(std::move(evs_ptr), std::move(evsaux_ptr)) ) {
    ATH_MSG_WARNING("Unable to write new Jet collection and aux store to event store: " << m_outputEventShape.key());
  } else {
    ATH_MSG_DEBUG("Created new EventShape container: " << m_outputEventShape.key());
  }
 
  return StatusCode::SUCCESS;
}
 
//**********************************************************************
StatusCode EventShapeCopier::fillEventShape(xAOD::EventShape *evs) const {
  const xAOD::EventShape * inputES;
 
  SG::ReadHandle<xAOD::EventShape> handle_in( m_inputEventShape );
  if ( handle_in.isValid() ) {
    inputES = handle_in.cptr();
  } else {
    ATH_MSG_WARNING("Unable to read: " << m_inputEventShape.key());
    return StatusCode::FAILURE;      
  }
 
  SG::ConstAccessor<float> InputDensityAcc ( m_eventDensityName ) ;
  SG::ConstAccessor<float> InputDensitySigmaAcc ( m_eventDensityName+"Sigma" ) ;
  SG::ConstAccessor<float> InputDensityAreaAcc ( m_eventDensityName+"Area" ) ;
  static const SG::Accessor<float> DensityAcc ( "Density" ) ;
  static const SG::Accessor<float> DensitySigmaAcc ( "DensitySigma" ) ;
  static const SG::Accessor<float> DensityAreaAcc ( "DensityArea" ) ;
  DensityAcc(*evs)      = InputDensityAcc(*inputES);
  DensitySigmaAcc(*evs) = InputDensitySigmaAcc(*inputES);
  DensityAreaAcc(*evs)  = InputDensityAreaAcc(*inputES);
 
  return StatusCode::SUCCESS;      
}
  
//**********************************************************************
 
#ifdef XAOD_ANALYSIS
void EventShapeCopier::renameEventDensities(){
  setProperty("InputEventShape", "LCTopoEventShape").ignore();
  setProperty("OutputEventShape", "Kt4LCTopoEventShape").ignore();
  setProperty("EventDensityName", "DensityForJetsR4").ignore();
  
  fillEventShape().ignore();
 
  setProperty("InputEventShape", "LCTopoEventShape").ignore();
  setProperty("OutputEventShape", "Kt6LCTopoEventShape").ignore();
  setProperty("EventDensityName", "DensityForJetsR6").ignore();    
 
  fillEventShape().ignore();
}
#else
// In Athena, do nothing. Use an Athena alg as defined in python/EventDensityConfig.py
void EventShapeCopier::renameEventDensities(){}
#endif