StJetMuEvent.cxx

//StJetMuEvent.cxx

//std
#include "Stiostream.h"
#include <cmath>
#include <vector>
using namespace std;

//ROOT
#include "TObject.h"
#include "TTree.h"
#include "TClonesArray.h"

//SCL
#include "SystemOfUnits.h"
#include "PhysicalConstants.h"
#include "StThreeVectorF.hh"
#include "StLorentzVectorF.hh"

//StEvent
#include "StEventTypes.h"

//StMuDSTMaker
#include "StMuDSTMaker/COMMON/StMuDstMaker.h"
#include "StMuDSTMaker/COMMON/StMuDst.h"
#include "StMuDSTMaker/COMMON/StMuEvent.h"
#include "StMuDSTMaker/COMMON/StMuTrack.h"

//UpsilonAna
#include "StJetMuEvent.h"

ClassImp(StJetMuEvent)
    
    StJetMuEvent::StJetMuEvent() : mTracks(new TClonesArray("StMuTrack",100))
{
    //cout <<"StJetMuEvent::StJetMuEvent()"<<endl;
}

StJetMuEvent::~StJetMuEvent()
{
    //cout <<"StJetMuEvent::~StJetMuEvent()"<<endl;
}

bool StJetMuEvent::fill(StMuDstMaker* maker)
{
    StMuEvent* e = maker->muDst()->event();
    if (!e) {
        cout <<"Error, null event.  Return False"<<endl;
        return false;
    }

    reset();
    
    if (accept(maker)) {
        return true;
    }
    return false;
}

bool StJetMuEvent::accept(StMuDstMaker* maker)
{    
    StMuEvent* e = maker->muDst()->event();
    if (!e) {
        cout <<"StJetMuEvent::accept(StMuDstMaker*). Error:\t"
             <<"Null event.  Return false"<<endl;
        return false;
    }

    fillBasicTypes(e);
    vector<StMuTrack*> vec;
        
    int n = maker->muDst()->primaryTracks()->GetLast()+1;  // get number of primary tracks
        
    for (int i=0; i<n; ++i) {
        StMuTrack* track = maker->muDst()->primaryTracks(i);     // get pointer to primary track
            
        if (acceptTrack(track)) {
            //push back vector
            vec.push_back(track);
        }
    }
    
    if (mCuts.verbose) {
        cout <<"\t Accepted "<<vec.size()<<" tracks of "<<n<<" possible"<<endl;
    }

    if (vec.empty()==false) {
        
        //cout <<"\t-------------- vector      ------------"<<endl;
        //Fill tracks in TClonesArray:
        for (vector<StMuTrack*>::iterator it=vec.begin(); it!=vec.end(); ++it) {
            StMuTrack& track = **it;
            //cout <<"momentum:\t"<<track.p()<<endl;
            TClonesArray& cArr = *mTracks;
            new(cArr[mTrackCounter++]) StMuTrack(track); //I know this works...
        }
        /*
        //Test
        cout <<"\t-------------- TClonesArray ------------"<<endl;
        int nTracks = mTracks->GetLast()+1; //don't know why, but they don't have a size method
        for (int i=0; i<nTracks; ++i) {
        TClonesArray& cArr = *mTracks;
        StMuTrack* track = static_cast<StMuTrack*>(cArr[i]);
        cout <<"momentum:\t"<<track->p()<<endl;
        }
        */
        
        return true;
    }
    else {
        return false;
    }
}

bool StJetMuEvent::acceptTrack(StMuTrack* track)
{
    if (track->flag() >= 0 &&
        track->momentum().perp() > mCuts.ptCut &&
        fabs(track->momentum().pseudoRapidity()) < mCuts.pseudoRapidityCutOff &&
        track->nHitsFit() >= mCuts.minNumberOfFitPoints &&
        track->nHits() >= mCuts.minNumberOfPoints) {
        return true;
    }
    else {
        return false;
    }
}

void StJetMuEvent::reset()
{
    mPlusPlus = 0;
    mMinusMinus = 0;
    mPlusMinus = 0;
    mL3Fired=false;

    mEventId=0;
    mEventNumber=0;
    mRunId=0;
    mRunNumber=0;
    mTriggerWord=0;
    
    mRefMultPos=0;
    mRefMultNeg=0;
    mRefMult=0;
    
    mMagneticField=0.;
    mZdcAdcAttenuatedSumWest=0.;
    mZdcAdcAttenuatedSumEast=0.;
    mCtbMultiplicity=0.;
    
    mPrimaryVertexPosition.setX(0.);
    mPrimaryVertexPosition.setY(0.);
    mPrimaryVertexPosition.setZ(0.);

    mTrackCounter=0;
    mTracks->Clear();
}

void StJetMuEvent::fillBasicTypes(StMuEvent* event)
{
    //Basic event info
    mEventId = event->eventId();
    mEventNumber = event->eventNumber();
    mRunId = event->runId();
    mRunNumber = event->runNumber();
    mTriggerWord = event->l0Trigger().triggerWord();  //StEvent->l0Trigger()->triggerWord();
    
    //Event characterization
    mRefMultPos = event->refMultPos();
    mRefMultNeg = event->refMultNeg();
    mRefMult = event->refMult();
    
    mMagneticField = event->magneticField();
    mZdcAdcAttenuatedSumWest = event->zdcAdcAttentuatedSumWest();
    mZdcAdcAttenuatedSumEast = event->zdcAdcAttentuatedSumEast();
    mCtbMultiplicity = event->ctbMultiplicity();
    mPrimaryVertexPosition = event->primaryVertexPosition();
    
    //reactionPlane(unsigned short);
    //reactionPlanePtWgt(unsigned short);
}