MatchStruct.h

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#ifndef HLTRIGGEROFFLINE_HIGGS_MATCHSTRUCT_CC
#define HLTRIGGEROFFLINE_HIGGS_MATCHSTRUCT_CC

#include "DataFormats/Candidate/interface/Candidate.h"
#include "DataFormats/TrackReco/interface/Track.h"

#include "TLorentzVector.h"
#include "DataFormats/Math/interface/Vector3D.h"

#include <vector>

// Matching structure: helper structure to match gen/reco candidates with
// hlt trigger objects
struct MatchStruct {
  unsigned int objType;
  float pt;
  float eta;
  float phi;
  float bTag;
  math::XYZTLorentzVector lorentzVector;
  const void* thepointer;
  MatchStruct() : objType(0), pt(0), eta(0), phi(0), bTag(0), lorentzVector(0, 0, 0, 0), thepointer(nullptr) {}
  MatchStruct(const reco::Candidate* cand, const unsigned int& obj)
      : objType(obj),
        pt(cand->pt()),
        eta(cand->eta()),
        phi(cand->phi()),
        bTag(0),
        thepointer(cand)

  {}
  MatchStruct(const reco::Candidate* cand, const unsigned int& obj, const float& bTagVal)
      : objType(obj),
        pt(cand->pt()),
        eta(cand->eta()),
        phi(cand->phi()),
        bTag(bTagVal),
        lorentzVector(cand->p4()),
        thepointer(cand)

  {}
  // FIXME: If finally the track is disappeared, then recover the last code...
  MatchStruct(const reco::Track* cand, const unsigned int& obj)
      : objType(obj), pt(cand->pt()), eta(cand->eta()), phi(cand->phi()), thepointer(cand) {}
  bool operator<(MatchStruct match) { return this->pt < match.pt; }
  bool operator>(MatchStruct match) { return this->pt > match.pt; }
};

struct matchesByDescendingPt {
  bool operator()(MatchStruct a, MatchStruct b) { return a.pt > b.pt; }
};
struct matchesByDescendingBtag {
  bool operator()(MatchStruct a, MatchStruct b) { return a.bTag > b.bTag; }
};
#endif