TruthParticlesInConeTool.h

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/*
   Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
 */
 
#ifndef PARTICLESINCONETOOLS_TRUTHPARTICLESINCONETOOL_H
#define PARTICLESINCONETOOLS_TRUTHPARTICLESINCONETOOL_H
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "GaudiKernel/ServiceHandle.h"
#include "StoreGate/ReadHandleKey.h"
 
#include "IParticlesLookUpTable.h"
#include "ParticlesInConeTools/ITruthParticlesInConeTool.h"
#include "xAODTruth/TruthParticle.h"
#include "xAODTruth/TruthParticleContainer.h"
 
namespace xAOD {
 
class TruthParticlesInConeTool
  : public AthAlgTool
  , virtual public ITruthParticlesInConeTool
{
public:
  TruthParticlesInConeTool(const std::string& type,
                           const std::string& name,
                           const IInterface* parent);

  virtual ~TruthParticlesInConeTool() = default;

  virtual StatusCode initialize() override final;

  virtual bool particlesInCone(
    const EventContext& ctx,
    float eta,
    float phi,
    float dr,
    std::vector<const TruthParticle*>& output) const override final;
 
  typedef IParticlesLookUpTable<TruthParticle> LookUpTable;
 
private:
  // init look-up table
  const LookUpTable* getTable(const EventContext& ctx) const;

  SG::ReadHandleKey<TruthParticleContainer> m_truthParticleLocation{
    this,
    "TruthParticleLocation",
    "TruthParticles"
  };
 
  SG::ReadHandleKey<LookUpTable> m_LookUpTableCacheRead{ "LookUpTable" };
  SG::WriteHandleKey<LookUpTable> m_LookUpTableCacheWrite{ "LookUpTable" };
};
} // end of namespace
 
CLASS_DEF(xAOD::TruthParticlesInConeTool::LookUpTable, 151156931, 0)
#endif