#include <Riostream.h>
-#include <TList.h>
#include <TH1.h>
-#include <TH2.h>
-#include <TH3.h>
-#include <THnSparse.h>
+#include <TList.h>
+#include <TTree.h>
#include "AliLog.h"
+#include "AliEventplane.h"
+#include "AliMultiplicity.h"
+#include "AliTriggerAnalysis.h"
#include "AliAnalysisManager.h"
+#include "AliInputEventHandler.h"
+
#include "AliESDtrackCuts.h"
#include "AliESDUtils.h"
-#include "AliMultiplicity.h"
-#include "AliInputEventHandler.h"
-#include "AliTriggerAnalysis.h"
-#include "AliMCEvent.h"
+
#include "AliAODEvent.h"
-#include "AliMCParticle.h"
#include "AliAODMCParticle.h"
-#include "AliEventplane.h"
#include "AliRsnCutSet.h"
+#include "AliRsnMiniPair.h"
#include "AliRsnMiniEvent.h"
#include "AliRsnMiniParticle.h"
-#include "AliRsnMiniPair.h"
#include "AliRsnMiniAnalysisTask.h"
fEvNum(0),
fUseCentrality(kFALSE),
fCentralityType("QUALITY"),
+ fContinuousMix(kTRUE),
fNMix(0),
fMaxDiffMult(10),
fMaxDiffVz(1.0),
fTrackCuts(0),
fRsnEvent(),
fEvBuffer(0x0),
- fNMixed(0),
fTriggerAna(0x0),
- fESDtrackCuts(0x0)
+ fESDtrackCuts(0x0),
+ fMiniEvent(0x0),
+ fBigOutput(kFALSE)
{
//
// Dummy constructor ALWAYS needed for I/O.
fEvNum(0),
fUseCentrality(kFALSE),
fCentralityType("QUALITY"),
+ fContinuousMix(kTRUE),
fNMix(0),
fMaxDiffMult(10),
fMaxDiffVz(1.0),
fTrackCuts(0),
fRsnEvent(),
fEvBuffer(0x0),
- fNMixed(0),
fTriggerAna(0x0),
- fESDtrackCuts(0x0)
+ fESDtrackCuts(0x0),
+ fMiniEvent(0x0),
+ fBigOutput(kFALSE)
{
//
// Default constructor.
fEvNum(0),
fUseCentrality(copy.fUseCentrality),
fCentralityType(copy.fCentralityType),
+ fContinuousMix(copy.fContinuousMix),
fNMix(copy.fNMix),
fMaxDiffMult(copy.fMaxDiffMult),
fMaxDiffVz(copy.fMaxDiffVz),
fTrackCuts(copy.fTrackCuts),
fRsnEvent(),
fEvBuffer(0x0),
- fNMixed(0),
fTriggerAna(copy.fTriggerAna),
- fESDtrackCuts(copy.fESDtrackCuts)
+ fESDtrackCuts(copy.fESDtrackCuts),
+ fMiniEvent(0x0),
+ fBigOutput(copy.fBigOutput)
{
//
// Copy constructor.
fUseMC = copy.fUseMC;
fUseCentrality = copy.fUseCentrality;
fCentralityType = copy.fCentralityType;
+ fContinuousMix = copy.fContinuousMix;
fNMix = copy.fNMix;
fMaxDiffMult = copy.fMaxDiffMult;
fMaxDiffVz = copy.fMaxDiffVz;
fTrackCuts = copy.fTrackCuts;
fTriggerAna = copy.fTriggerAna;
fESDtrackCuts = copy.fESDtrackCuts;
+ fBigOutput = copy.fBigOutput;
return (*this);
}
// (the list is owner and will clean-up these histograms). Protect in PROOF case.
//
+
if (fOutput && !AliAnalysisManager::GetAnalysisManager()->IsProofMode()) {
delete fOutput;
+ delete fEvBuffer;
}
}
//
// reset counter
- fEvNum = 0;
+ fEvNum = -1;
+
+ // message
+ AliInfo(Form("Selected event characterization: %s (%s)", (fUseCentrality ? "centrality" : "multiplicity"), fCentralityType.Data()));
// initialize trigger analysis
if (fTriggerAna) delete fTriggerAna;
fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010();
// create list and set it as owner of its content (MANDATORY)
+ if (fBigOutput) OpenFile(1);
fOutput = new TList();
fOutput->SetOwner();
fOutput->Add(fHEventStat);
// create temporary tree for filtered events
- AliRsnMiniEvent *mini = 0x0;
+ if (fMiniEvent) delete fMiniEvent;
fEvBuffer = new TTree("EventBuffer", "Temporary buffer for mini events");
- fEvBuffer->Branch("events", "AliRsnMiniEvent", &mini);
+ fEvBuffer->Branch("events", "AliRsnMiniEvent", &fMiniEvent);
// create one histogram per each stored definition (event histograms)
Int_t i, ndef = fHistograms.GetEntries();
}
}
- // setup PID response
- AliAnalysisManager *man = AliAnalysisManager::GetAnalysisManager();
- AliInputEventHandler *inputHandler = (AliInputEventHandler*)man->GetInputEventHandler();
- fRsnEvent.SetPIDResponse(inputHandler->GetPIDResponse());
-
// post data for ALL output slots >0 here, to get at least an empty histogram
PostData(1, fOutput);
}
void AliRsnMiniAnalysisTask::UserExec(Option_t *)
{
//
-// Main computation loop.
-// To be precise, this loop only checks if events are OK and eventually
-// stores them in the temporary tree used for the analysis.
-// The computation of correlations is done only at the end,
-// in the automatic function which is called every time
+// Computation loop.
+// In this case, it checks if the event is acceptable, and eventually
+// creates the corresponding mini-event and stores it in the buffer.
+// The real histogram filling is done at the end, in "FinishTaskOutput".
//
- // event counter
+ // increment event counter
fEvNum++;
-
+
// check current event
Char_t check = CheckCurrentEvent();
if (!check) return;
-
- // if the check is successful, the mini-event is created and stored
- AliRsnMiniEvent *miniEvent = 0x0;
- fEvBuffer->SetBranchAddress("events", &miniEvent);
- // assign event-related values
- miniEvent = new AliRsnMiniEvent;
- miniEvent->Vz() = fInputEvent->GetPrimaryVertex()->GetZ();
- miniEvent->Angle() = ComputeAngle();
- miniEvent->Mult() = ComputeCentrality((check == 'E'));
- AliDebugClass(1, Form("Event %d: vz = %f -- mult = %f -- angle = %f", fEvNum, miniEvent->Vz(), miniEvent->Mult(), miniEvent->Angle()));
+ // setup PID response
+ AliAnalysisManager *man = AliAnalysisManager::GetAnalysisManager();
+ AliInputEventHandler *inputHandler = (AliInputEventHandler*)man->GetInputEventHandler();
+ fRsnEvent.SetPIDResponse(inputHandler->GetPIDResponse());
- // fill all histograms for events only
- Int_t id, ndef = fHistograms.GetEntries();
- AliRsnMiniOutput *def = 0x0;
- for (id = 0; id < ndef; id++) {
- def = (AliRsnMiniOutput*)fHistograms[id];
- if (!def) continue;
- if (!def->IsEventOnly()) continue;
- def->Fill(miniEvent, &fValues);
- }
+ // fill a mini-event from current
+ // and skip this event if no tracks were accepted
+ FillMiniEvent(check);
- // fill all histograms for mother only (if MC is present)
+ // fill MC based histograms on mothers,
+ // which do need the original event
if (fUseMC) {
if (fRsnEvent.IsESD() && fMCEvent)
- FillTrueMotherESD(miniEvent);
+ FillTrueMotherESD(fMiniEvent);
else if (fRsnEvent.IsAOD() && fRsnEvent.GetAODList())
- FillTrueMotherAOD(miniEvent);
+ FillTrueMotherAOD(fMiniEvent);
}
- // loop on daughters
- // and store only those that pass at least one cut
- Int_t it, ic, ncuts = fTrackCuts.GetEntries(), ntot = fRsnEvent.GetAbsoluteSum();
- AliRsnDaughter cursor;
- AliRsnMiniParticle miniParticle;
- for (it = 0; it < ntot; it++) {
- fRsnEvent.SetDaughter(cursor, it);
- miniParticle.CopyDaughter(&cursor);
- for (ic = 0; ic < ncuts; ic++) {
- AliRsnCutSet *cuts = (AliRsnCutSet*)fTrackCuts[ic];
- if (cuts->IsSelected(&cursor)) miniParticle.SetCutBit(ic);
- }
- AliDebugClass(3, Form("-- Track %d: REC px = %f -- py = %f -- pz = %f", it, miniParticle.Px(0), miniParticle.Py(0), miniParticle.Pz(0)));
- AliDebugClass(3, Form("-- Track %d: SIM px = %f -- py = %f -- pz = %f", it, miniParticle.Px(1), miniParticle.Py(1), miniParticle.Pz(1)));
- AliDebugClass(3, Form("-- Track %d: Charge = %c -- PDG = %d -- mother = %d -- motherPDG = %d", it, miniParticle.Charge(), miniParticle.PDG(), miniParticle.Mother(), miniParticle.MotherPDG()));
- AliDebugClass(2, Form("-- Track %d: Cutbit = %u", it, miniParticle.CutBits()));
- if (miniParticle.CutBits()) {
- miniEvent->AddParticle(miniParticle);
- }
+ // if the event is not empty, store it
+ if (fMiniEvent->IsEmpty()) {
+ AliDebugClass(2, Form("Rejecting empty event #%d", fEvNum));
+ } else {
+ Int_t id = fEvBuffer->GetEntries();
+ AliDebugClass(2, Form("Adding event #%d with ID = %d", fEvNum, id));
+ fMiniEvent->ID() = id;
+ fEvBuffer->Fill();
}
- AliDebugClass(1, Form("Event %d: selected tracks = %d", fEvNum, miniEvent->Particles().GetEntriesFast()));
- // store event
- fEvBuffer->Fill();
-
- // process single event
- ProcessEvents(miniEvent);
-
- // post outputs
+ // post data for computed stuff
PostData(1, fOutput);
}
void AliRsnMiniAnalysisTask::FinishTaskOutput()
{
//
-// At the end of execution, when the temporary tree is filled,
-// perform mixing with all found events
+// This function is called at the end of the loop on available events,
+// and then the buffer will be full with all the corresponding mini-events,
+// each one containing all tracks selected by each of the available track cuts.
+// Here a loop is done on each of these events, and both single-event and mixing are computed
//
- Int_t i1, i2, imix, nEvents = fEvBuffer->GetEntries();
- AliRsnMiniEvent *evMix = 0x0, evMain;
- fEvBuffer->SetBranchAddress("events", &evMix);
+ // security code: reassign the buffer to the mini-event cursor
+ fEvBuffer->SetBranchAddress("events", &fMiniEvent);
+
+ // prepare variables
+ Int_t ievt, nEvents = (Int_t)fEvBuffer->GetEntries();
+ Int_t idef, nDefs = fHistograms.GetEntries();
+ Int_t imix, iloop, ifill;
+ AliRsnMiniOutput *def = 0x0;
+ AliRsnMiniOutput::EComputation compType;
+
+ // loop on events, and for each one fill all outputs
+ // using the appropriate procedure depending on its type
+ // only mother-related histograms are filled in UserExec,
+ // since they require direct access to MC event
+ for (ievt = 0; ievt < nEvents; ievt++) {
+ // get next entry
+ fEvBuffer->GetEntry(ievt);
+ // fill
+ for (idef = 0; idef < nDefs; idef++) {
+ def = (AliRsnMiniOutput*)fHistograms[idef];
+ if (!def) continue;
+ compType = def->GetComputation();
+ // execute computation in the appropriate way
+ switch (compType) {
+ case AliRsnMiniOutput::kEventOnly:
+ //AliDebugClass(1, Form("Event %d, def '%s': event-value histogram filling", ievt, def->GetName()));
+ ifill = 1;
+ def->FillEvent(fMiniEvent, &fValues);
+ break;
+ case AliRsnMiniOutput::kTruePair:
+ //AliDebugClass(1, Form("Event %d, def '%s': true-pair histogram filling", ievt, def->GetName()));
+ ifill = def->FillPair(fMiniEvent, fMiniEvent, &fValues);
+ break;
+ case AliRsnMiniOutput::kTrackPair:
+ //AliDebugClass(1, Form("Event %d, def '%s': pair-value histogram filling", ievt, def->GetName()));
+ ifill = def->FillPair(fMiniEvent, fMiniEvent, &fValues);
+ break;
+ case AliRsnMiniOutput::kTrackPairRotated1:
+ //AliDebugClass(1, Form("Event %d, def '%s': rotated (1) background histogram filling", ievt, def->GetName()));
+ ifill = def->FillPair(fMiniEvent, fMiniEvent, &fValues);
+ break;
+ case AliRsnMiniOutput::kTrackPairRotated2:
+ //AliDebugClass(1, Form("Event %d, def '%s': rotated (2) background histogram filling", ievt, def->GetName()));
+ ifill = def->FillPair(fMiniEvent, fMiniEvent, &fValues);
+ break;
+ default:
+ // other kinds are processed elsewhere
+ ifill = 0;
+ AliDebugClass(2, Form("Computation = %d", (Int_t)compType));
+ }
+ // message
+ AliDebugClass(1, Form("Event %6d: def = '%15s' -- fills = %5d", ievt, def->GetName(), ifill));
+ }
+ }
+
+ // if no mixing is required, stop here and post the output
+ if (fNMix < 1) {
+ AliDebugClass(2, "Stopping here, since no mixing is required");
+ PostData(1, fOutput);
+ return;
+ }
// initialize mixing counter
- fNMixed.Set(nEvents);
- TString msg();
-
- // loop on events
- for (i1 = 0; i1 < nEvents; i1++) {
- if (fNMixed[i1] >= fNMix) continue;
- fEvBuffer->GetEntry(i1);
- evMain = (*evMix);
- for (i2 = 1; i2 < nEvents; i2++) {
- imix = i1 + i2;
+ Int_t nmatched[nEvents];
+ TString *smatched = new TString[nEvents];
+ for (ievt = 0; ievt < nEvents; ievt++) {
+ smatched[ievt] = "|";
+ nmatched[ievt] = 0;
+ }
+
+ // search for good matchings
+ for (ievt = 0; ievt < nEvents; ievt++) {
+ if (nmatched[ievt] >= fNMix) continue;
+ fEvBuffer->GetEntry(ievt);
+ AliRsnMiniEvent evMain(*fMiniEvent);
+ for (iloop = 1; iloop < nEvents; iloop++) {
+ imix = ievt + iloop;
if (imix >= nEvents) imix -= nEvents;
- if (imix == i1) continue;
- if (fNMixed[i1] >= fNMix) break;
- if (fNMixed[imix] >= fNMix) continue;
+ if (imix == ievt) continue;
+ // text next entry
fEvBuffer->GetEntry(imix);
- // exit if events are not matched
- if (TMath::Abs(evMain.Vz() - evMix->Vz()) > fMaxDiffVz) continue;
- if (TMath::Abs(evMain.Mult() - evMix->Mult()) > fMaxDiffMult) continue;
- if (TMath::Abs(evMain.Angle() - evMix->Angle()) > fMaxDiffAngle) continue;
- // found a match: increment counter for both events
- fNMixed[i1]++;
- fNMixed[imix]++;
- //cout << "Mixed " << i1 << " with " << imix << endl;
- ProcessEvents(&evMain, evMix);
- // if mixed enough times, stop
+ // skip if events are not matched
+ if (!EventsMatch(&evMain, fMiniEvent)) continue;
+ // check that the array of good matches for mixed does not already contain main event
+ if (smatched[imix].Contains(Form("|%d|", ievt))) continue;
+ // check that the found good events has not enough matches already
+ if (nmatched[imix] >= fNMix) continue;
+ // add new mixing candidate
+ smatched[ievt].Append(Form("%d|", imix));
+ nmatched[ievt]++;
+ nmatched[imix]++;
+ if (nmatched[ievt] >= fNMix) break;
}
+ AliDebugClass(1, Form("Matches for event %5d = %d [%s] (missing are declared above)", evMain.ID(), nmatched[ievt], smatched[ievt].Data()));
}
- // message
- for (Int_t ii = 0; ii < nEvents; ii++) cout << Form("Event #%6d mixed %3d times", ii, fNMixed[ii]) << endl;
+ // perform mixing
+ TObjArray *list = 0x0;
+ TObjString *os = 0x0;
+ for (ievt = 0; ievt < nEvents; ievt++) {
+ ifill = 0;
+ fEvBuffer->GetEntry(ievt);
+ AliRsnMiniEvent evMain(*fMiniEvent);
+ list = smatched[ievt].Tokenize("|");
+ TObjArrayIter next(list);
+ while ( (os = (TObjString*)next()) ) {
+ imix = os->GetString().Atoi();
+ fEvBuffer->GetEntry(imix);
+ for (idef = 0; idef < nDefs; idef++) {
+ def = (AliRsnMiniOutput*)fHistograms[idef];
+ if (!def) continue;
+ if (!def->IsTrackPairMix()) continue;
+ ifill += def->FillPair(&evMain, fMiniEvent, &fValues, kTRUE);
+ if (!def->IsSymmetric()) {
+ AliDebugClass(2, "Reflecting non symmetric pair");
+ ifill += def->FillPair(fMiniEvent, &evMain, &fValues, kFALSE);
+ }
+ }
+ }
+ delete list;
+ }
- // post outputs
+ delete [] smatched;
+
+ /*
+ OLD
+ ifill = 0;
+ for (iloop = 1; iloop < nEvents; iloop++) {
+ imix = ievt + iloop;
+ // restart from beginning if reached last event
+ if (imix >= nEvents) imix -= nEvents;
+ // avoid to mix an event with itself
+ if (imix == ievt) continue;
+ // skip all events already mixed enough times
+ if (fNMixed[ievt] >= fNMix) break;
+ if (fNMixed[imix] >= fNMix) continue;
+ fEvBuffer->GetEntry(imix);
+ // skip if events are not matched
+ if (TMath::Abs(evMain.Vz() - fMiniEvent->Vz() ) > fMaxDiffVz ) continue;
+ if (TMath::Abs(evMain.Mult() - fMiniEvent->Mult() ) > fMaxDiffMult ) continue;
+ if (TMath::Abs(evMain.Angle() - fMiniEvent->Angle()) > fMaxDiffAngle) continue;
+ // found a match: increment counter for both events
+ AliDebugClass(1, Form("Event %d, def '%s': event mixing (%d with %d)", ievt, def->GetName(), ievt, imix));
+ fNMixed[ievt]++;
+ fNMixed[imix]++;
+ // process mixing
+ ifill += def->FillPair(&evMain, fMiniEvent, &fValues);
+ // stop if mixed enough times
+ if (fNMixed[ievt] >= fNMix) break;
+ }
+ break;
+ // print number of mixings done with each event
+ for (ievt = 0; ievt < nEvents; ievt++) {
+ AliDebugClass(2, Form("Event %6d: mixed %2d times", ievt, fNMixed[ievt]));
+ }
+ */
+
+ // post computed data
PostData(1, fOutput);
}
// --> if this is failed, the event is rejected
isSelected = (((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected() & AliVEvent::kMB);
if (!isSelected) {
- AliDebugClass(1, "Event does not pass physics selections");
+ AliDebugClass(2, "Event does not pass physics selections");
fRsnEvent.SetRef(0x0);
fRsnEvent.SetRefMC(0x0);
return 0;
}
// if the above exit point is not taken, the event is accepted
- AliDebugClass(1, Form("Stats for event %d: %s", fEvNum, msg.Data()));
+ AliDebugClass(2, Form("Stats: %s", msg.Data()));
if (isSelected) {
fHEventStat->Fill(3.1);
return output;
}
}
+//__________________________________________________________________________________________________
+void AliRsnMiniAnalysisTask::FillMiniEvent(Char_t evType)
+{
+//
+// Refresh cursor mini-event data member to fill with current event.
+// Returns the total number of tracks selected.
+//
+
+ // assign event-related values
+ if (fMiniEvent) delete fMiniEvent;
+ fMiniEvent = new AliRsnMiniEvent;
+ fMiniEvent->Vz() = fInputEvent->GetPrimaryVertex()->GetZ();
+ fMiniEvent->Angle() = ComputeAngle();
+ fMiniEvent->Mult() = ComputeCentrality((evType == 'E'));
+ AliDebugClass(2, Form("Event %d: type = %c -- vz = %f -- mult = %f -- angle = %f", fEvNum, evType, fMiniEvent->Vz(), fMiniEvent->Mult(), fMiniEvent->Angle()));
+
+ // loop on daughters and assign track-related values
+ Int_t ic, ncuts = fTrackCuts.GetEntries();
+ Int_t ip, npart = fRsnEvent.GetAbsoluteSum();
+ Int_t npos = 0, nneg = 0, nneu = 0;
+ AliRsnDaughter cursor;
+ AliRsnMiniParticle miniParticle;
+ for (ip = 0; ip < npart; ip++) {
+ // point cursor to next particle
+ fRsnEvent.SetDaughter(cursor, ip);
+ // copy momentum and MC info if present
+ miniParticle.CopyDaughter(&cursor);
+ miniParticle.Index() = ip;
+ // switch on the bits corresponding to passed cuts
+ for (ic = 0; ic < ncuts; ic++) {
+ AliRsnCutSet *cuts = (AliRsnCutSet*)fTrackCuts[ic];
+ if (cuts->IsSelected(&cursor)) miniParticle.SetCutBit(ic);
+ }
+ // if a track passes at least one track cut, it is added to the pool
+ if (miniParticle.CutBits()) {
+ fMiniEvent->AddParticle(miniParticle);
+ if (miniParticle.Charge() == '+') npos++;
+ else if (miniParticle.Charge() == '-') nneg++;
+ else nneu++;
+ }
+ }
+
+ // get number of accepted tracks
+ AliDebugClass(1, Form("Event %6d: total = %5d, accepted = %4d (pos %4d, neg %4d, neu %4d)", fEvNum, npart, (Int_t)fMiniEvent->Particles().GetEntriesFast(), npos, nneg, nneu));
+}
+
//__________________________________________________________________________________________________
Double_t AliRsnMiniAnalysisTask::ComputeAngle()
{
// Get the plane angle
//
- AliEventplane *plane = fInputEvent->GetEventplane();
+ AliEventplane *plane = 0x0;
+
+ if (fInputEvent->InheritsFrom(AliESDEvent::Class()))
+ plane = fInputEvent->GetEventplane();
+ else if (fInputEvent->InheritsFrom(AliAODEvent::Class())) {
+ AliAODEvent *aodEvent = (AliAODEvent*)fInputEvent;
+ plane = aodEvent->GetHeader()->GetEventplaneP();
+ }
+
if (plane)
return plane->GetEventplane("Q");
else {
if (!def->IsMother()) continue;
for (ip = 0; ip < npart; ip++) {
AliMCParticle *part = (AliMCParticle*)fMCEvent->GetTrack(ip);
- if (TMath::Abs(part->Particle()->GetPdgCode()) != def->GetMotherPDG()) continue;
+ if (part->Particle()->GetPdgCode() != def->GetMotherPDG()) continue;
// check that daughters match expected species
if (part->Particle()->GetNDaughters() < 2) continue;
label1 = part->Particle()->GetDaughter(0);
miniPair.Sum(0) = miniPair.Sum(1) = (p1 + p2);
miniPair.FillRef(def->GetMotherMass());
// do computations
- def->Fill(&miniPair, miniEvent, &fValues);
+ def->FillMother(&miniPair, miniEvent, &fValues);
}
}
}
if (!def->IsMother()) continue;
for (ip = 0; ip < npart; ip++) {
AliAODMCParticle *part = (AliAODMCParticle*)list->At(ip);
- if (TMath::Abs(part->GetPdgCode()) != def->GetMotherPDG()) continue;
+ if (part->GetPdgCode() != def->GetMotherPDG()) continue;
// check that daughters match expected species
if (part->GetNDaughters() < 2) continue;
label1 = part->GetDaughter(0);
miniPair.Sum(0) = miniPair.Sum(1) = (p1 + p2);
miniPair.FillRef(def->GetMotherMass());
// do computations
- def->Fill(&miniPair, miniEvent, &fValues);
+ def->FillMother(&miniPair, miniEvent, &fValues);
}
}
}
-//________________________________________________________________________
-void AliRsnMiniAnalysisTask::ProcessEvents(AliRsnMiniEvent *evMain, AliRsnMiniEvent *evMix)
+//__________________________________________________________________________________________________
+Bool_t AliRsnMiniAnalysisTask::EventsMatch(AliRsnMiniEvent *event1, AliRsnMiniEvent *event2)
{
//
-// This function processes all single tracks.
-// Loops on the daughters defined in current event
-// and on all of them which pass the single-track cuts defined, computes what needed
+// Check if two events are compatible.
+// If the mixing is continuous, this is true if differences in vz, mult and angle are smaller than
+// the specified values.
+// If the mixing is binned, this is true if the events are in the same bin.
//
- // check if it is mixed
- Bool_t isMix;
- if (evMix) {
- isMix = kTRUE;
+ if (!event1 || !event2) return kFALSE;
+ Int_t ivz1, ivz2, imult1, imult2, iangle1, iangle2;
+ Double_t dv, dm, da;
+
+ if (fContinuousMix) {
+ dv = TMath::Abs(event1->Vz() - event2->Vz() );
+ dm = TMath::Abs(event1->Mult() - event2->Mult() );
+ da = TMath::Abs(event1->Angle() - event2->Angle());
+ if (dv > fMaxDiffVz) {
+ //AliDebugClass(2, Form("Events #%4d and #%4d don't match due to a too large diff in Vz = %f", event1->ID(), event2->ID(), dv));
+ return kFALSE;
+ }
+ if (dm > fMaxDiffMult ) {
+ //AliDebugClass(2, Form("Events #%4d and #%4d don't match due to a too large diff in Mult = %f", event1->ID(), event2->ID(), dm));
+ return kFALSE;
+ }
+ if (da > fMaxDiffAngle) {
+ //AliDebugClass(2, Form("Events #%4d and #%4d don't match due to a too large diff in Angle = %f", event1->ID(), event2->ID(), da));
+ return kFALSE;
+ }
+ return kTRUE;
} else {
- evMix = evMain;
- isMix = kFALSE;
+ ivz1 = (Int_t)(event1->Vz() / fMaxDiffVz);
+ ivz2 = (Int_t)(event2->Vz() / fMaxDiffVz);
+ imult1 = (Int_t)(event1->Mult() / fMaxDiffMult);
+ imult2 = (Int_t)(event2->Mult() / fMaxDiffMult);
+ iangle1 = (Int_t)(event1->Angle() / fMaxDiffAngle);
+ iangle2 = (Int_t)(event2->Angle() / fMaxDiffAngle);
+ if (ivz1 != ivz2) return kFALSE;
+ if (imult1 != imult2) return kFALSE;
+ if (iangle1 != iangle2) return kFALSE;
+ return kTRUE;
}
- AliDebugClass(1, Form("Event %d: processing %s", fEvNum, (isMix ? "mixing" : "single event")));
-
- // 2 nested loops on tracks
- // inner starts from next track or from first, depending if is mixing or not
- Int_t i1, i2, idef, start;
- Int_t n1 = evMain->Particles().GetEntries();
- Int_t n2 = evMix ->Particles().GetEntries();
- Int_t ndef = fHistograms.GetEntries();
- AliRsnMiniParticle *daughter1 = 0x0, *daughter2 = 0x0;
- AliRsnMiniOutput *def = 0x0;
- for (i1 = 0; i1 < n1; i1++) {
- daughter1 = (AliRsnMiniParticle*)evMain->Particles()[i1];
- if (!daughter1) continue;
- if (isMix) start = 0; else start = i1 + 1;
- for (i2 = start; i2 < n2; i2++) {
- daughter2 = (AliRsnMiniParticle*)evMix->Particles()[i2];
- if (!daughter2) continue;
- // loop on definitions
- for (idef = 0; idef < ndef; idef++) {
- def = (AliRsnMiniOutput*)fHistograms[idef];
- if (!def) continue;
- if (def->IsEventOnly()) continue;
- if (def->IsMother()) continue;
- if (isMix && !def->IsTrackPairMix()) continue;
- if (!isMix && def->IsTrackPairMix()) continue;
- // check if definitions here match the current pair
- def->Fill(daughter1, daughter2, evMain, &fValues);
- } // end loop on definitions
- } // end loop on daughter #2
- } // end loop on daughter #1
}
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff