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mlethuil |
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#include "UserCode/Morgan/interface/ParticleTreeDrawer.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/Framework/interface/Event.h"
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//#include "FWCore/Framework/interface/Handle.h"
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#include "FWCore/Framework/interface/EventSetup.h"
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#include "DataFormats/HepMCCandidate/interface/GenParticleCandidate.h"
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#include "FWCore/Utilities/interface/EDMException.h"
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#include <iostream>
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#include <sstream>
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using namespace std;
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using namespace edm;
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using namespace reco;
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using namespace HepMC;
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ParticleTreeDrawer::ParticleTreeDrawer() :
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src_("genParticleCandidates"), printP4_(false), printPtEtaPhi_(false), printVertex_(false), printStatus_(false)
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{}
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void ParticleTreeDrawer::analyze( const Event & event, const EventSetup & es )
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{
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es.getData( pdt_ );
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Handle<CandidateCollection> particles;
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event.getByLabel( "genParticleCandidates", particles );
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for( CandidateCollection::const_iterator p = particles->begin();
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p != particles->end(); ++ p )
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{
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if ( p->mother() == 0 )
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{
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cout << "-- decay: --" << endl;
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printDecay( * p, "" );
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}
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}
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}
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void ParticleTreeDrawer::printP4( const reco::Candidate & c ) const
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{
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if ( printP4_ )
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cout << " (" << c.px() << ", " << c.py() << ", " << c.pz() << "; " << c.energy() << ")";
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if ( printPtEtaPhi_ )
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cout << " [" << c.pt() << ": " << c.eta() << ", " << c.phi() << "]";
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if ( printVertex_ )
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cout << " {" << c.vx() << ", " << c.vy() << ", " << c.vz() << "}";
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if ( printStatus_ )
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cout << "{status: " << c.status() << "}";
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}
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void ParticleTreeDrawer::printDecay( const reco::Candidate & c, const std::string & pre ) const
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{
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int id = c.pdgId();
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unsigned int ndau = c.numberOfDaughters();
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const ParticleData * pd = pdt_->particle( id );
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assert( pd != 0 );
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cout << pd->name();
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printP4( c );
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cout << endl;
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if ( ndau == 0 )
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return;
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bool lastLevel = true;
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for( size_t i = 0; i < ndau; ++ i )
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if ( c.daughter( i )->numberOfDaughters() != 0 )
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{
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lastLevel = false;
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break;
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}
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if ( lastLevel )
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{
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cout << pre << "+-> ";
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for( size_t i = 0; i < ndau; ++ i )
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{
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const GenParticleCandidate * d =
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dynamic_cast<const GenParticleCandidate *>( c.daughter( i ) );
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assert( d != 0 );
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const ParticleData * pd = pdt_->particle( d->pdgId() );
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assert( pd != 0 );
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cout << pd->name();
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printP4( * d );
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if ( i != ndau - 1 )
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cout << " ";
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}
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cout << endl;
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return;
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}
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for( size_t i = 0; i < ndau; ++i )
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{
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const GenParticleCandidate * d =
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dynamic_cast<const GenParticleCandidate *>( c.daughter( i ) );
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cout << pre << "+-> ";
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string prepre( pre );
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if ( i == ndau - 1 )
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prepre += " ";
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else
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prepre += "| ";
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printDecay( * d, prepre );
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}
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}
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//#include "FWCore/Framework/interface/MakerMacros.h"
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//DEFINE_FWK_MODULE( ParticleTreeDrawer );
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