/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AssociationUtils/AssociationUtils/DeltaRMatcher.h

#ifndef ASSOCIATIONUTILS_DELTARMATCHER_H
#define ASSOCIATIONUTILS_DELTARMATCHER_H

// System includes
#include <limits>

// EDM includes
#include "xAODBase/IParticle.h"

// Local includes
#include "AssociationUtils/IObjectAssociator.h"

namespace ORUtils
{

  class DeltaRMatcher : public IParticleAssociator
  {

    public:

      DeltaRMatcher(double dR, bool useRapidity=true);

      virtual bool objectsMatch
      (const xAOD::IParticle& p1, const xAOD::IParticle& p2) const override;

    private:

      double m_dR;
      bool m_useRapidity;

  }; // class DeltaRMatcher


  class SlidingDeltaRMatcher : public IParticleAssociator
  {

    public:

      SlidingDeltaRMatcher(double c1, double c2,
                           double maxCone = std::numeric_limits<double>::max(),
                           bool useRapidity=true);

      virtual bool objectsMatch
      (const xAOD::IParticle& p1, const xAOD::IParticle& p2) const override;

    private:

      double m_c1;
      double m_c2;
      double m_maxCone;

      bool m_useRapidity;

  }; // class SlidingDeltaRMatcher

} // namespace ORUtils

#endif

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