fastjet::atlas::JetConeFinderTool Class Reference

#include <JetConeFinderTool.hh>

List of all members.

Public Types

typedef Jet::jet_list_t jetcollection_t

Public Member Functions

 JetConeFinderTool ()
virtual ~JetConeFinderTool ()
virtual int execute (jetcollection_t &theJets)
void reconstruct ()
Jet * calc_cone (double, double)

Public Attributes

std::string m_protoJetContainerLoc
std::string m_jetContainerLoc
double m_coneR
double m_ptcut
double m_eps
double m_seedPt
double m_etaMax
jetcollection_t * m_pjetV
jetcollection_t * m_jetOV
int m_cone_in_tower
std::vector< double > * m_veta
std::vector< double > * m_vphi
int m_ctr
int m_dctr

Detailed Description

Definition at line 50 of file JetConeFinderTool.hh.

Member Typedef Documentation

typedef Jet::jet_list_t fastjet::atlas::JetConeFinderTool::jetcollection_t

Definition at line 53 of file JetConeFinderTool.hh.

Constructor & Destructor Documentation

fastjet::atlas::JetConeFinderTool::JetConeFinderTool (  ) 

Definition at line 35 of file JetConeFinderTool.cc.

00035                                      :m_coneR(0.7)
00036   , m_ptcut(0.0*GeV)
00037   , m_eps(0.05)
00038   , m_seedPt(2.0*GeV)
00039   , m_etaMax(5.0)
00040 {}

fastjet::atlas::JetConeFinderTool::~JetConeFinderTool (  )  [virtual]

Definition at line 42 of file JetConeFinderTool.cc.

00043 {}

Member Function Documentation

Jet * fastjet::atlas::JetConeFinderTool::calc_cone ( double  eta,
double  phi 
)

Definition at line 181 of file JetConeFinderTool.cc.

References fastjet::atlas::Jet::addJet(), fastjet::atlas::JetDistances::deltaR(), m_coneR, m_ctr, and m_pjetV.

Referenced by reconstruct().

00182 {
00183   // Create a new Jet   
00184   Jet* j = new Jet();
00185   m_ctr +=1; 
00186 
00187   // Add all ProtoJet within m_coneR to this Jet  
00188   jetcollection_t::iterator itr  = m_pjetV->begin();
00189   jetcollection_t::iterator itrE = m_pjetV->end();
00190 
00191   for ( ; itr!=itrE; ++itr ) {
00192     double dR = JetDistances::deltaR(eta,phi,(*itr)->eta(),(*itr)->phi());
00193     if ( dR < m_coneR ) {
00194       j->addJet( (*itr) );
00195     }
00196   }    
00197 
00198   return j;
00199 }

int fastjet::atlas::JetConeFinderTool::execute ( jetcollection_t &  theJets  )  [virtual]

Definition at line 48 of file JetConeFinderTool.cc.

References fastjet::atlas::clear_list(), m_ctr, m_dctr, m_jetOV, m_pjetV, and reconstruct().

Referenced by fastjet::ATLASConePlugin::run_clustering().

00049 {
00050   sort_jet_list<JetSorter_Et>(theJets);
00051 
00052   m_pjetV = &theJets;
00053 
00054   if(theJets.size()==0) return 0;
00055 
00056   // Initiale ctr/dctr counter for object counting.
00057   m_ctr = 0;
00058   m_dctr = 0;
00059 
00061   // Reconstruct Jets // 
00063   this->reconstruct();
00064 
00066   // ReFill JetCollection //
00068   clear_list(theJets);
00069   jetcollection_t::iterator it = m_jetOV->begin();
00070   jetcollection_t::iterator itE = m_jetOV->end();
00071   for(; it!=itE; ++it){
00072     theJets.push_back(*it);
00073   }
00074 
00075 
00076   delete m_jetOV;
00077   return 1;
00078 }

void fastjet::atlas::JetConeFinderTool::reconstruct (  ) 

Definition at line 85 of file JetConeFinderTool.cc.

References calc_cone(), fastjet::atlas::JetDistances::deltaPhi(), fastjet::atlas::LorentzVector::eta(), m_dctr, m_eps, m_etaMax, m_jetOV, m_pjetV, m_seedPt, and fastjet::atlas::LorentzVector::phi().

Referenced by execute().

00086 {
00087   m_jetOV = new jetcollection_t();
00088 
00089   jetcollection_t::iterator tItr;
00090   jetcollection_t::iterator tItr_begin = m_pjetV->begin();
00091   jetcollection_t::iterator tItr_end   = m_pjetV->end();
00092 
00093   // order towers in pt
00094 
00095   for ( tItr=tItr_begin; tItr!=tItr_end; ++tItr ) {    
00096 
00097     // Seed Cut
00098     double tEt = (*tItr)->et();
00099     if ( tEt < m_seedPt ) break;
00100 
00101     // Tower eta, phi
00102     double etaT = (*tItr)->eta();
00103     double phiT = (*tItr)->phi();    
00104     
00105     // Iteration logic
00106     bool stable = false;
00107     bool inGeom = true;
00108     
00109     Jet* preJet;
00110     
00111     int count = 1;
00112     do { // Iteration Loop
00113 
00114       // Make cone  
00115       preJet = calc_cone(etaT,phiT);
00116       double etaC = preJet->eta();
00117       double phiC = preJet->phi();
00118       
00119       double deta = fabs(etaT - etaC);
00120       double dphi = fabs(JetDistances::deltaPhi(phiT,phiC));
00121 
00122       // Is Stable ?
00123       if ( deta < m_eps && dphi < m_eps ) 
00124         stable = true;
00125       
00126       // In Geometry ?
00127       if ( fabs(etaC) > m_etaMax ) 
00128         inGeom = false; 
00129 
00130       etaT = etaC;
00131       phiT = phiC;
00132 
00133       if ( !stable && inGeom ) {
00134         delete preJet;
00135         m_dctr +=1;
00136       }
00137       ++count;
00138 
00139     }while ( !stable && inGeom && count < 10  );      
00140   
00141     if ( count > 9 && (!stable && inGeom) ) continue;  // FIXME 9 ?
00142 
00143     // If iteration was succesfull -- check if this is a new jet and 
00144     // add it to OV.
00145 
00146     if ( stable && inGeom ) {
00147       jetcollection_t::iterator pItr   = m_jetOV->begin();
00148       jetcollection_t::iterator pItrE  = m_jetOV->end();
00149     
00150       bool newJet = true;
00151       double etaT = preJet->eta();
00152       double phiT = preJet->phi();
00153 
00154       for ( ; pItr != pItrE ; ++pItr ) {
00155         double etaC = (*pItr)->eta();
00156         double phiC = (*pItr)->phi();
00157 
00158         double deta = fabs(etaT - etaC);
00159         double dphi = fabs(JetDistances::deltaPhi(phiT,phiC));
00160 
00161         if ( deta < 0.05  && dphi < 0.05 ) { 
00162           newJet = false;
00163           break;
00164         }
00165       }
00166       if ( newJet ) {
00167         m_jetOV->push_back( preJet );
00168       }
00169       else {
00170         delete preJet;
00171         m_dctr +=1;
00172       }
00173     }
00174     else {
00175       delete preJet;
00176       m_dctr +=1;
00177     }
00178   }    
00179 }

Member Data Documentation

int fastjet::atlas::JetConeFinderTool::m_cone_in_tower

Definition at line 82 of file JetConeFinderTool.hh.

double fastjet::atlas::JetConeFinderTool::m_coneR

Definition at line 71 of file JetConeFinderTool.hh.

Referenced by calc_cone(), and fastjet::ATLASConePlugin::run_clustering().

int fastjet::atlas::JetConeFinderTool::m_ctr

Definition at line 87 of file JetConeFinderTool.hh.

Referenced by calc_cone(), and execute().

int fastjet::atlas::JetConeFinderTool::m_dctr

Definition at line 88 of file JetConeFinderTool.hh.

Referenced by execute(), and reconstruct().

double fastjet::atlas::JetConeFinderTool::m_eps

Definition at line 73 of file JetConeFinderTool.hh.

Referenced by reconstruct().

double fastjet::atlas::JetConeFinderTool::m_etaMax

Definition at line 75 of file JetConeFinderTool.hh.

Referenced by reconstruct().

std::string fastjet::atlas::JetConeFinderTool::m_jetContainerLoc

Definition at line 69 of file JetConeFinderTool.hh.

jetcollection_t* fastjet::atlas::JetConeFinderTool::m_jetOV

Definition at line 80 of file JetConeFinderTool.hh.

Referenced by execute(), and reconstruct().

jetcollection_t* fastjet::atlas::JetConeFinderTool::m_pjetV

Definition at line 79 of file JetConeFinderTool.hh.

Referenced by calc_cone(), execute(), and reconstruct().

std::string fastjet::atlas::JetConeFinderTool::m_protoJetContainerLoc

Definition at line 68 of file JetConeFinderTool.hh.

double fastjet::atlas::JetConeFinderTool::m_ptcut

Definition at line 72 of file JetConeFinderTool.hh.

double fastjet::atlas::JetConeFinderTool::m_seedPt

Definition at line 74 of file JetConeFinderTool.hh.

Referenced by reconstruct(), and fastjet::ATLASConePlugin::run_clustering().

std::vector<double>* fastjet::atlas::JetConeFinderTool::m_veta

Definition at line 84 of file JetConeFinderTool.hh.

std::vector<double>* fastjet::atlas::JetConeFinderTool::m_vphi

Definition at line 85 of file JetConeFinderTool.hh.

The documentation for this class was generated from the following files:
Generated on Fri Apr 17 16:16:05 2009 for fastjet by  doxygen 1.5.7.1