MatchByDEta.h

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#ifndef MatchByDEta_h_
#define MatchByDEta_h_
 
#include "FWCore/ParameterSet/interface/ParameterSet.h"
 
namespace reco {
  template <typename T1, typename T2>
  class MatchByDEta {
  public:
    MatchByDEta(const edm::ParameterSet& cfg) : maxDEta_(cfg.getParameter<double>("maxDeltaEta")) {}
    bool operator()(const T1& t1, const T2& t2) const { return fabs(t1.eta() - t2.eta()) < maxDEta_; }
 
  private:
    double maxDEta_;
  };
}  // namespace reco
 
#endif