GenParticlesHelper.h

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#ifndef PhysicsTools_HepMCCandAlgos_GenParticlesHelper_h
#define PhysicsTools_HepMCCandAlgos_GenParticlesHelper_h
 
#include "DataFormats/HepMCCandidate/interface/GenParticleFwd.h"
 
#include <iostream>
 
namespace GenParticlesHelper {
 
  typedef reco::GenParticleCollection::const_iterator IG;
  typedef reco::GenParticleRefVector::const_iterator IGR;
 
  void findParticles(const reco::GenParticleCollection& sourceParticles,
                     reco::GenParticleRefVector& particleRefs,
                     int pdgId,
                     int status);
 
  void findDescendents(const reco::GenParticleRef& base,
                       reco::GenParticleRefVector& descendents,
                       int status,
                       int pdgId = 0);
 
  void findSisters(const reco::GenParticleRef& baseSister, reco::GenParticleRefVector& sisterRefs);
 
  bool hasAncestor(const reco::GenParticle* particle, int pdgId, int status);
 
  bool isDirect(const reco::GenParticleRef& particle);
 
  std::ostream& operator<<(std::ostream& out, const reco::GenParticleRef& genRef);
 
}  // namespace GenParticlesHelper
 
#endif