-#include "AliEMCALTracker.h"
-#include "AliEMCALPIDv1.h"
+//========================================================================
+// Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved.
+//
+// Author: The ALICE Off-line Project.
+// Contributors are mentioned in the code where appropriate.
+//
+// Permission to use, copy, modify and distribute this software and its
+// documentation strictly for non-commercial purposes is hereby granted
+// without fee, provided that the above copyright notice appears in all
+// copies and that both the copyright notice and this permission notice
+// appear in the supporting documentation. The authors make no claims
+// about the suitability of this software for any purpose. It is
+// provided "as is" without express or implied warranty.
+//========================================================================
+//
+// Class AliEMCALTracker
+// -----------------------
+// Implementation of the track matching method between barrel tracks and
+// EMCAL clusters.
+// Besides algorithm implementation, some cuts are required to be set
+// in order to define, for each track, an acceptance window where clusters
+// are searched to find best match (if any).
+// The class accepts as input an ESD container, and works directly on it,
+// simply setting, for each of its tracks, the fEMCALindex flag, for each
+// track which is matched to a cluster.
+// In order to use method, one must launch PropagateBack().
+//
+// ------------------------------------------------------------------------
+// author: A. Pulvirenti (alberto.pulvirenti@ct.infn.it)
+//=========================================================================
+
+#include <Riostream.h>
+#include <iomanip>
+
+#include <TFile.h>
+#include <TTree.h>
+#include <TList.h>
+#include <TString.h>
+#include <TVector3.h>
+#include <TClonesArray.h>
+#include <TGeoMatrix.h>
+
+#include "AliLog.h"
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
+#include "AliESDCaloCluster.h"
+#include "AliEMCALRecPoint.h"
#include "AliRunLoader.h"
-#include "AliESD.h"
+#include "AliEMCALTrack.h"
+#include "AliEMCALLoader.h"
+#include "AliEMCALGeometry.h"
+#include "AliEMCALReconstructor.h"
+#include "AliEMCALRecParam.h"
+#include "AliCDBEntry.h"
+#include "AliCDBManager.h"
-//-------------------------------------------------------------------------
-// EMCAL tracker.
-// Matches ESD tracks with the EMCAL and makes the PID.
-// Currently, has only one function implemented : PropagateBack(AliESD*)
-//-------------------------------------------------------------------------
+#include "AliEMCALTracker.h"
ClassImp(AliEMCALTracker)
-Bool_t AliEMCALTracker::fgDebug = kFALSE ;
+//
+//------------------------------------------------------------------------------
+//
+AliEMCALTracker::AliEMCALTracker()
+ : AliTracker(),
+ fNPropSteps(0),
+ fTrackCorrMode(kTrackCorrNone),
+ fCutX(50.0),
+ fCutY(50.0),
+ fCutZ(50.0),
+ fCutAlphaMin(-200.0),
+ fCutAlphaMax(200.0),
+ fCutAngle(100.0),
+ fMaxDist(10.0),
+ fRho(1.0),
+ fX0(1.0),
+ fTracks(0),
+ fClusters(0),
+ fMatches(0),
+ fGeom(0)
+{
+ //
+ // Default constructor.
+ // Initializes al simple data members to default values,
+ // and all collections to NULL.
+ // Output file name is set to a default value.
+ //
+
+ InitParameters();
+}
+//
+//------------------------------------------------------------------------------
+//
+AliEMCALTracker::AliEMCALTracker(const AliEMCALTracker& copy)
+ : AliTracker(),
+ fNPropSteps(copy.fNPropSteps),
+ fTrackCorrMode(copy.fTrackCorrMode),
+ fCutX(copy.fCutX),
+ fCutY(copy.fCutY),
+ fCutZ(copy.fCutZ),
+ fCutAlphaMin(copy.fCutAlphaMin),
+ fCutAlphaMax(copy.fCutAlphaMax),
+ fCutAngle(copy.fCutAngle),
+ fMaxDist(copy.fMaxDist),
+ fRho(copy.fRho),
+ fX0(copy.fX0),
+ fTracks((TObjArray*)copy.fTracks->Clone()),
+ fClusters((TObjArray*)copy.fClusters->Clone()),
+ fMatches((TList*)copy.fMatches->Clone()),
+ fGeom(copy.fGeom)
+{
+ //
+ // Copy constructor
+ // Besides copying all parameters, duplicates all collections.
+ //
+}
+//
+//------------------------------------------------------------------------------
+//
+AliEMCALTracker& AliEMCALTracker::operator=(const AliEMCALTracker& copy)
+{
+ //
+ // Assignment operator.
+ // Besides copying all parameters, duplicates all collections.
+ //
+
+ fCutX = copy.fCutX;
+ fCutY = copy.fCutY;
+ fCutZ = copy.fCutZ;
+ fCutAlphaMin = copy.fCutAlphaMin;
+ fCutAlphaMax = copy.fCutAlphaMax;
+ fCutAngle = copy.fCutAngle;
+ fMaxDist = copy.fMaxDist;
+
+ fTracks = (TObjArray*)copy.fTracks->Clone();
+ fClusters = (TObjArray*)copy.fClusters->Clone();
+ fMatches = (TList*)copy.fMatches->Clone();
+
+ fGeom = copy.fGeom;
+
+ return (*this);
+}
+//
+//------------------------------------------------------------------------------
+//
+void AliEMCALTracker::InitParameters()
+{
+ //
+ // Retrieve initialization parameters
+ //
+
+ // Check if the instance of AliEMCALRecParam exists,
+ const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam();
+ if(!recParam){
+ AliFatal("Reconstruction parameters for EMCAL not set!");
+ }
+
+ fCutX = recParam->GetTrkCutX();
+ fCutY = recParam->GetTrkCutY();
+ fCutZ = recParam->GetTrkCutZ();
+ fMaxDist = recParam->GetTrkCutR();
+ fCutAngle = recParam->GetTrkCutAngle();
+ fCutAlphaMin = recParam->GetTrkCutAlphaMin();
+ fCutAlphaMax = recParam->GetTrkCutAlphaMax();
+
+}
+//
+//------------------------------------------------------------------------------
+//
+TTree* AliEMCALTracker::SearchTrueMatches()
+{
+ //Search through the list of
+ //track match candidates and clusters
+ //and look for true matches
+ //
+ //
+ if (!fClusters) return 0;
+ if (fClusters->IsEmpty()) return 0;
+ if (!fTracks) return 0;
+ if (fTracks->IsEmpty()) return 0;
+
+ TTree *outTree = new TTree("tree", "True matches from event");
+ Int_t indexT, indexC, label;
+ outTree->Branch("indexC", &indexC, "indexC/I");
+ outTree->Branch("indexT", &indexT, "indexT/I");
+ outTree->Branch("label", &label , "label/I");
+
+ Double_t dist;
+ Int_t ic, nClusters = (Int_t)fClusters->GetEntries();
+ Int_t it, nTracks = fTracks->GetEntries();
+
+ for (ic = 0; ic < nClusters; ic++) {
+ AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(ic);
+ label = cluster->Label();
+ indexC = cluster->Index();
+ for (it = 0; it < nTracks; it++) {
+ AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(it);
+ if (TMath::Abs(track->GetSeedLabel()) != label) continue;
+ dist = CheckPair(track, cluster);
+ if (dist <= fMaxDist) {
+ indexT = track->GetSeedIndex();
+ outTree->Fill();
+ }
+ }
+ }
+
+ return outTree;
+}
+//
+//------------------------------------------------------------------------------
+//
+void AliEMCALTracker::Clear(Option_t* option)
+{
+ //
+ // Clearing method
+ // Deletes all objects in arrays and the arrays themselves
+ //
-Int_t AliEMCALTracker::PropagateBack(AliESD *esd) {
- // Makes the Particle Identification
+ TString opt(option);
+ Bool_t clearTracks = opt.Contains("TRACKS");
+ Bool_t clearClusters = opt.Contains("CLUSTERS");
+ Bool_t clearMatches = opt.Contains("MATCHES");
+ if (opt.Contains("ALL")) {
+ clearTracks = kTRUE;
+ clearClusters = kTRUE;
+ clearMatches = kTRUE;
+ }
+
+ if (fTracks != 0x0 && clearTracks) {
+ fTracks->Delete();
+ delete fTracks;
+ fTracks = 0;
+ }
+ if (fClusters != 0x0 && clearClusters) {
+ fClusters->Delete();
+ delete fClusters;
+ fClusters = 0;
+ }
+ if (fMatches != 0x0 && clearMatches) {
+ fMatches->Delete();
+ delete fMatches;
+ fMatches = 0;
+ }
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::LoadClusters(TTree *cTree)
+{
+ //
+ // Load EMCAL clusters in the form of AliEMCALRecPoint,
+ // from simulation temporary files.
+ // (When included in reconstruction chain, this method is used automatically)
+ //
+
+ Clear("CLUSTERS");
+
+ TBranch *branch = cTree->GetBranch("EMCALECARP");
+ if (!branch) {
+ AliError("Can't get the branch with the EMCAL clusters");
+ return 1;
+ }
+
+ TClonesArray *clusters = new TClonesArray("AliEMCALRecPoint", 1000);
+ branch->SetAddress(&clusters);
+
+ cTree->GetEvent(0);
+ Int_t nClusters = (Int_t)clusters->GetEntries();
+ fClusters = new TObjArray(0);
+ for (Int_t i = 0; i < nClusters; i++) {
+ AliEMCALRecPoint *cluster = (AliEMCALRecPoint*)clusters->At(i);
+ if (!cluster) continue;
+ if (cluster->GetClusterType() != AliESDCaloCluster::kEMCALClusterv1) continue;
+ AliEMCALMatchCluster *matchCluster = new AliEMCALMatchCluster(i, cluster);
+ fClusters->AddLast(matchCluster);
+ }
+
+ branch->SetAddress(0);
+ clusters->Delete();
+ delete clusters;
+ if (fClusters->IsEmpty())
+ AliWarning("No clusters collected");
- esd=0; // This is to avoid a compilation warning.
- // This pointer is reserved for future needs
+ AliInfo(Form("Collected %d clusters (RecPoints)", fClusters->GetEntries()));
+
+ return 0;
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::LoadClusters(AliESDEvent *esd)
+{
+ //
+ // Load EMCAL clusters in the form of AliESDCaloClusters,
+ // from an AliESD object.
+ //
- Int_t eventNumber = fRunLoader->GetEventNumber() ;
+ // make sure that tracks/clusters collections are empty
+ Clear("CLUSTERS");
+
+ Int_t start = esd->GetFirstEMCALCluster();
+ Int_t nClustersEMC = esd->GetNumberOfEMCALClusters();
+ Int_t end = start + nClustersEMC;
+
+ fClusters = new TObjArray(0);
+
+ Int_t i;
+ for (i = start; i < end; i++) {
+ AliESDCaloCluster *cluster = esd->GetCaloCluster(i);
+ if (!cluster) continue;
+ if (cluster->GetClusterType() != AliESDCaloCluster::kEMCALClusterv1) continue;
+ AliEMCALMatchCluster *matchCluster = new AliEMCALMatchCluster(i, cluster);
+ fClusters->AddLast(matchCluster);
+ }
+ if (fClusters->IsEmpty())
+ AliWarning("No clusters collected");
+
+ AliInfo(Form("Collected %d clusters from ESD", fClusters->GetEntries()));
+
+ return 0;
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::LoadTracks(AliESDEvent *esd)
+{
+ //
+ // Load ESD tracks.
+ //
+
+ Clear("TRACKS");
+
+ Int_t nTracks = esd->GetNumberOfTracks();
+ fTracks = new TObjArray(0);
+
+ Int_t i, j;
+ Bool_t isKink;
+ Double_t alpha;
+ for (i = 0; i < nTracks; i++) {
+ AliESDtrack *esdTrack = esd->GetTrack(i);
+ // set by default the value corresponding to "no match"
+ esdTrack->SetEMCALcluster(kUnmatched);
+// if (esdTrack->GetLabel() < 0) continue;
+// if (!(esdTrack->GetStatus() & AliESDtrack::kTOFout)) continue;
+ isKink = kFALSE;
+ for (j = 0; j < 3; j++) {
+ if (esdTrack->GetKinkIndex(j) != 0) isKink = kTRUE;
+ }
+ if (isKink) continue;
+ AliEMCALTrack *track = new AliEMCALTrack(*esdTrack);
+ track->SetMass(0.13957018);
+ // check alpha and reject the tracks which fall outside EMCAL acceptance
+ alpha = track->GetAlpha() * TMath::RadToDeg();
+ if (alpha > -155.0 && alpha < 67.0) {
+ delete track;
+ continue;
+ }
+// if (!PropagateToEMCAL(track)) {
+// delete track;
+// continue;
+// }
+ track->SetSeedIndex(i);
+ track->SetSeedLabel(esdTrack->GetLabel());
+ fTracks->AddLast(track);
+ }
+ if (fTracks->IsEmpty()) {
+ AliWarning("No tracks collected");
+ }
+
+ AliInfo(Form("Collected %d tracks", fTracks->GetEntries()));
+
+ return 0;
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::PropagateBack(AliESDEvent* esd)
+{
+ //
+ // Main operation method.
+ // Gets external AliESD containing tracks to be matched.
+ // After executing match finding, stores in the same ESD object all infos
+ // and releases the object for further reconstruction steps.
+ //
+ //
+ // Note: should always return 0=OK, because otherwise all tracking
+ // is aborted for this event
- TString headerFile(fRunLoader->GetFileName()) ;
- TString branchName(fRunLoader->GetEventFolder()->GetName()) ;
+ if (!esd) {
+ AliError("NULL ESD passed");
+ return 1;
+ }
+
+ // step 1:
+ // if cluster array is empty, cluster are collected
+ // from the passed ESD, and work is done with ESDCaloClusters
+ Int_t okLoadClusters, nClusters;
+ if (!fClusters || (fClusters && fClusters->IsEmpty())) {
+ okLoadClusters = LoadClusters(esd);
+ }
+ nClusters = fClusters->GetEntries();
+
+ // step 2:
+ // collect ESD tracks
+ Int_t okLoadTracks = LoadTracks(esd), nTracks;
+ if (okLoadTracks) return 3;
+ nTracks = fTracks->GetEntries();
+
+ // step 3:
+ // each track is propagated to the "R" position of each cluster.
+ // The closest cluster is assigned as match.
+ // IF no clusters lie within the maximum allowed distance, no matches are assigned.
+ Int_t nMatches = CreateMatches();
+ if (!nMatches) {
+ AliInfo(Form("#clusters = %d -- #tracks = %d --> No good matches found.", nClusters, nTracks));
+ return 0;
+ }
+ else {
+ AliInfo(Form("#clusters = %d -- #tracks = %d --> Found %d matches.", nClusters, nTracks, nMatches));
+ }
+
+ // step 4:
+ // when more than 1 track share the same matched cluster, only the closest one is kept.
+ Int_t nRemoved = SolveCompetitions();
+ AliInfo(Form("Removed %d duplicate matches", nRemoved));
+ if (nRemoved >= nMatches) {
+ AliError("Removed ALL matches! Check the algorithm or data. Nothing to save");
+ return 5;
+ }
+
+ // step 5:
+ // save obtained information setting the 'fEMCALindex' field of AliESDtrack object
+ Int_t nSaved = 0, trackID, nGood = 0, nFake = 0;
+ TListIter iter(fMatches);
+ AliEMCALMatch *match = 0;
+ while ( (match = (AliEMCALMatch*)iter.Next()) ) {
+ if (!match->CanBeSaved()) continue;
+ AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(match->GetIndexT());
+ AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(match->GetIndexC());
+ trackID = track->GetSeedIndex();
+ AliESDtrack *esdTrack = esd->GetTrack(trackID);
+ if (!esdTrack) continue;
+ if (TMath::Abs(esdTrack->GetLabel()) == cluster->Label()) {
+ esdTrack->SetEMCALcluster(cluster->Index());
+ nGood++;
+ }
+ else {
+ esdTrack->SetEMCALcluster(-cluster->Index());
+ nFake++;
+ }
+ nSaved++;
+ }
+ /*
+ AliEMCALTrack *track = 0;
+ TObjArrayIter tracks(fTracks);
+ while ( (track = (AliEMCALTrack*)tracks.Next()) ) {
+ trackID = track->GetSeedIndex();
+ clusterID = track->GetMatchedClusterIndex();
+ AliESDtrack *esdTrack = esd->GetTrack(trackID);
+ if (!esdTrack) continue;
+ if (clusterID < 0) {
+ esdTrack->SetEMCALcluster(kUnmatched);
+ }
+ else {
+ AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(clusterID);
+ if (!cluster) continue;
+ if (esdTrack->GetLabel() == cluster->Label()) {
+ nGood++;
+ esdTrack->SetEMCALcluster(cluster->Index());
+ }
+ else {
+ esdTrack->SetEMCALcluster(-cluster->Index());
+ }
+ nSaved++;
+ }
+ }
+ */
+ AliInfo(Form("Saved %d matches [%d good + %d fake]", nSaved, nGood, nFake));
- AliEMCALPIDv1 pid(headerFile, branchName);
+ return 0;
+}
+//
+//------------------------------------------------------------------------------
+//
+void AliEMCALTracker::SetTrackCorrectionMode(Option_t *option)
+{
+ //
+ // Set track correction mode
+ // gest the choice in string format and converts into
+ // internal enum
+ //
+
+ TString opt(option);
+ opt.ToUpper();
+
+ if (!opt.CompareTo("NONE")) {
+ fTrackCorrMode = kTrackCorrNone;
+ }
+ else if (!opt.CompareTo("MMB")) {
+ fTrackCorrMode = kTrackCorrMMB;
+ }
+ else if (!opt.CompareTo("FIXED")) {
+ fTrackCorrMode = kTrackCorrFixed;
+ }
+ else {
+ cerr << "E-AliEMCALTracker::SetTrackCorrectionMode '" << option << "': Unrecognized option" << endl;
+ }
+}
+
+//
+//------------------------------------------------------------------------------
+//
+Double_t AliEMCALTracker::AngleDiff(Double_t angle1, Double_t angle2)
+{
+ //
+ // [PRIVATE]
+ // Given two angles in radiants, it converts them in the range 0-2pi
+ // then computes their true difference, i.e. if the difference a1-a2
+ // results to be larger than 180 degrees, it returns 360 - diff.
+ //
+
+ if (angle1 < 0.0) angle1 += TMath::TwoPi();
+ if (angle1 > TMath::TwoPi()) angle1 -= TMath::TwoPi();
+ if (angle2 < 0.0) angle2 += TMath::TwoPi();
+ if (angle2 > TMath::TwoPi()) angle2 -= TMath::TwoPi();
+
+ Double_t diff = TMath::Abs(angle1 - angle2);
+ if (diff > TMath::Pi()) diff = TMath::TwoPi() - diff;
+
+ if (angle2 > angle1) diff = -diff;
+
+ return diff;
+}
+//
+//------------------------------------------------------------------------------
+//
+Double_t AliEMCALTracker::CheckPair
+(AliEMCALTrack *track, AliEMCALMatchCluster *cl)
+{
+ //
+ // Given a track and a cluster,
+ // propagates the first to the radius of the second.
+ // Then, checks the propagation point against all cuts.
+ // If at least a cut is not passed, a valuer equal to
+ // twice the maximum allowed distance is passed (so the value returned
+ // will not be taken into account when creating matches)
+ //
+
+ // TEMP
+ Bool_t isTrue = kFALSE;
+// if (tr->GetSeedLabel() == cl->Label()) {
+// isTrue = kTRUE;
+// }
+
+ // copy track into temporary variable
+ AliEMCALTrack *tr = new AliEMCALTrack(*track);
+
+ Double_t distance = 2.0 * fMaxDist;
+
+ // check against cut on difference 'alpha - phi'
+ Double_t phi = TMath::ATan2(cl->Y(), cl->X());
+ phi = AngleDiff(phi, tr->GetAlpha());
+ if (phi < fCutAlphaMin || phi > fCutAlphaMax){
+ delete tr;
+ return distance;
+ }
+
+ // try to propagate to cluster radius
+ // (return the 'distance' value if it fails)
+ Double_t pos[3], &x = pos[0], &y = pos[1], &z = pos[2];
+ Double_t x0, rho;
+ tr->GetXYZ(pos);
+ Double_t rt = TMath::Sqrt(x*x + y*y);
+ Double_t rc = TMath::Sqrt(cl->X()*cl->X() + cl->Y()*cl->Y());
+
+ if (fTrackCorrMode == kTrackCorrMMB) {
+ Double_t pos1[3], pos2[3], param[6];
+ pos1[0] = x;
+ pos1[1] = y;
+ pos1[2] = z;
+ pos2[0] = cl->X();
+ pos2[1] = cl->Y();
+ pos2[2] = cl->Z();
+ MeanMaterialBudget(pos1, pos2, param);
+ rho = param[0]*param[4];
+ x0 = param[1];
+ }
+ else if (fTrackCorrMode == kTrackCorrFixed) {
+ rho = fRho;
+ x0 = fX0;
+ }
+ else {
+ rho = 0.0;
+ x0 = 0.0;
+ }
+ if (fNPropSteps) {
+ Int_t i;
+ Double_t r;
+ cout.setf(ios::fixed);
+ cout.precision(5);
+ if (isTrue) cout << "Init : " << rt << ' ' << x << ' ' << y << ' ' << z << endl;
+ for (i = 0; i < fNPropSteps; i++) {
+ r = rt + (rc - rt) * ((Double_t)(i+1)/(Double_t)fNPropSteps);
+ if (!tr->PropagateTo(r, x0, rho)){
+ delete tr;
+ return distance;
+ }
+ tr->GetXYZ(pos);
+ if (isTrue) cout << "Step : " << r << ' ' << x << ' ' << y << ' ' << z << endl;
+ }
+ if (isTrue) cout << "Clstr: " << rc << ' ' << cl->X() << ' ' << cl->Y() << ' ' << cl->Z() << endl;
+ }
+ else {
+ // when no steps are used, no correction makes sense
+ //if (!tr->PropagateTo(rc, 0.0, 0.0)) return distance;
+ if (!tr->PropagateToGlobal(cl->X(), cl->Y(), cl->Z(), 0.0, 0.0)){
+ delete tr;
+ return distance;
+ }
+ /*
+ Bool_t propOK = kFALSE;
+ cout << "START" << endl;
+ Double_t dist, rCHK, bestDist = 10000000.0;
+ for (Double_t rTMP = rc; rTMP> rc*0.95; rTMP -= 0.1) {
+ if (!tr->PropagateTo(rTMP)) continue;
+ propOK = kTRUE;
+ tr->GetXYZ(pos);
+ rCHK = TMath::Sqrt(x*x + y*y);
+ dist = TMath::Abs(rCHK - rc);
+ cout << rCHK << " vs. " << rc << endl;
+
+ if (TMath::Abs(rCHK - rc) < 0.01) break;
+ }
+ cout << "STOP" << endl;
+ if (!propOK) return distance;
+ */
+ }
+
+ // get global propagation of track at end of propagation
+ tr->GetXYZ(pos);
+
+ // check angle cut
+ TVector3 vc(cl->X(), cl->Y(), cl->Z());
+ TVector3 vt(x, y, z);
+ Double_t angle = TMath::Abs(vc.Angle(vt)) * TMath::RadToDeg();
+ // check: where is the track?
+ Double_t r, phiT, phiC;
+ r = TMath::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]);
+ phiT = TMath::ATan2(pos[1], pos[0]) * TMath::RadToDeg();
+ phiC = vc.Phi() * TMath::RadToDeg();
+ //cout << "Propagated R, phiT, phiC = " << r << ' ' << phiT << ' ' << phiC << endl;
+
+ if (angle > fCutAngle) {
+ //cout << "angle" << endl;
+ delete tr;
+ return distance;
+ }
+
+ // compute differences wr to each coordinate
+ x -= cl->X();
+ if (TMath::Abs(x) > fCutX) {
+ //cout << "cut X" << endl;
+ delete tr;
+ return distance;
+ }
+ y -= cl->Y();
+ if (TMath::Abs(y) > fCutY) {
+ //cout << "cut Y" << endl;
+ delete tr;
+ return distance;
+ }
+ z -= cl->Z();
+ if (TMath::Abs(z) > fCutZ) {
+ //cout << "cut Z" << endl;
+ delete tr;
+ return distance;
+ }
+
+ // compute true distance
+ distance = TMath::Sqrt(x*x + y*y + z*z);
+ //Double_t temp = CheckPairV2(tr, cl);
+ //if (temp < distance) return temp; else
+
+ // delete temporary object
+ delete tr;
+
+ return distance;
+}
+//
+//------------------------------------------------------------------------------
+//
+Double_t AliEMCALTracker::CheckPairV2
+(AliEMCALTrack *tr, AliEMCALMatchCluster *cl)
+{
+ //
+ // Given a track and a cluster,
+ // propagates the first to the radius of the second.
+ // Then, checks the propagation point against all cuts.
+ // If at least a cut is not passed, a valuer equal to
+ // twice the maximum allowed distance is passed (so the value returned
+ // will not be taken into account when creating matches)
+ //
+
+ // TEMP
+// Bool_t isTrue = kFALSE;
+// if (tr->GetSeedLabel() == cl->Label()) {
+// isTrue = kTRUE;
+// cout << "TRUE MATCH!!!" << endl;
+// }
+
+ Double_t distance = 2.0 * fMaxDist;
+
+ Double_t x0, rho;
+ if (fTrackCorrMode == kTrackCorrMMB) {
+ Double_t pos1[3], pos2[3], param[6];
+ tr->GetXYZ(pos1);
+// pos1[0] = x;
+// pos1[1] = y;
+// pos1[2] = z;
+ pos2[0] = cl->X();
+ pos2[1] = cl->Y();
+ pos2[2] = cl->Z();
+ MeanMaterialBudget(pos1, pos2, param);
+ rho = param[0]*param[4];
+ x0 = param[1];
+ }
+ else if (fTrackCorrMode == kTrackCorrFixed) {
+ rho = fRho;
+ x0 = fX0;
+ }
+ else {
+ rho = 0.0;
+ x0 = 0.0;
+ }
+
+ // check against cut on difference 'alpha - phi'
+ Double_t phi = TMath::ATan2(cl->Y(), cl->X());
+ phi = AngleDiff(phi, tr->GetAlpha());
+ if (phi < fCutAlphaMin || phi > fCutAlphaMax) return distance;
+
+ // get cluster position and put them into a vector
+ TVector3 vc(cl->X(), cl->Y(), cl->Z());
+ // rotate the vector in order to put all clusters on a plane intersecting
+ // vertically the X axis; the angle depends on the sector
+ Double_t clusterRot, clusterPhi = vc.Phi() * TMath::RadToDeg();
+ if (clusterPhi < 0.0) clusterPhi += 360.0;
+ if (clusterPhi < 100.0) {
+ clusterRot = -90.0;
+ }
+ else if (clusterPhi < 120.0) {
+ clusterRot = -110.0;
+ }
+ else if (clusterPhi < 140.0) {
+ clusterRot = -130.0;
+ }
+ else if (clusterPhi < 160.0) {
+ clusterRot = -150.0;
+ }
+ else if (clusterPhi < 180.0) {
+ clusterRot = -170.0;
+ }
+ else {
+ clusterRot = -190.0;
+ }
+ vc.RotateZ(clusterRot * TMath::DegToRad());
+ // generate a track from the ESD track selected
+ AliEMCALTrack *track = new AliEMCALTrack(*tr);
+ // compute the 'phi' coordinate of the intersection point to
+ // the EMCAL surface
+ Double_t x = vc.X();
+ Double_t y;
+ track->GetYAt(vc.X(), track->GetBz(), y);
+ Double_t tmp = x*TMath::Cos(track->GetAlpha()) - y*TMath::Sin(track->GetAlpha());
+ y = x*TMath::Sin(track->GetAlpha()) + y*TMath::Cos(track->GetAlpha());
+ x = tmp;
+ Double_t trackPhi = TMath::ATan2(y, x) * TMath::RadToDeg();
+ // compute phi difference
+ Double_t dphi = trackPhi - clusterPhi;
+ if (TMath::Abs(dphi) > 180.0) {
+ dphi = 360.0 - TMath::Abs(dphi);
+ if (clusterPhi > trackPhi) dphi = -dphi;
+ }
+ // propagate track to the X position of rotated cluster
+ // and get the vector of X, Y, Z in the local ref. frame of the track
+ track->PropagateTo(vc.X(), x0, rho);
+ TVector3 vt(track->GetX(), track->GetY(), track->GetZ());
+ vt.RotateZ((clusterPhi - trackPhi) * TMath::DegToRad());
+ TVector3 vdiff = vt-vc;
+
+ // compute differences wr to each coordinate
+ delete track;
+ if (vdiff.X() > fCutX) return distance;
+ if (vdiff.Y() > fCutY) return distance;
+ if (vdiff.Z() > fCutZ) return distance;
+
+ // compute true distance
+ distance = vdiff.Mag();
+ return distance;
+}
+//
+//------------------------------------------------------------------------------
+//
+Double_t AliEMCALTracker::CheckPairV3
+(AliEMCALTrack *track, AliEMCALMatchCluster *cl)
+{
+ //
+ // Given a track and a cluster,
+ // propagates the first to the radius of the second.
+ // Then, checks the propagation point against all cuts.
+ // If at least a cut is not passed, a valuer equal to
+ // twice the maximum allowed distance is passed (so the value returned
+ // will not be taken into account when creating matches)
+ //
+
+ AliEMCALTrack tr(*track);
+
+ Int_t sector;
+ Double_t distance = 2.0 * fMaxDist;
+ Double_t dx, dy, dz;
+ Double_t phi, alpha, slope, tgtXnum, tgtXden, sectorWidth = 20.0 * TMath::DegToRad();
+ Double_t xcurr, xprop, param[6] = {0., 0., 0., 0., 0., 0.}, x0, rho, bz;
+ Double_t x[3], x1[3], x2[3];
+
+ // get initial track position
+ xcurr = tr.GetX();
+
+ // evaluate the EMCAL sector number
+ phi = cl->Phi();
+ if (phi < 0.0) phi += TMath::TwoPi();
+ sector = (Int_t)(phi / sectorWidth);
+ alpha = ((Double_t)sector + 0.5) * sectorWidth;
+ // evaluate the corresponding X for track propagation
+ slope = TMath::Tan(alpha - 0.5*TMath::Pi());
+ tgtXnum = cl->Y() - slope * cl->X();
+ tgtXden = TMath::Sqrt(1.0 + slope*slope);
+ xprop = TMath::Abs(tgtXnum / tgtXden);
+
+ // propagate by small steps
+ tr.GetXYZ(x1);
+ bz = tr.GetBz();
+ if (!tr.GetXYZAt(xprop, bz, x2)) return distance;
+ //AliKalmanTrack::MeanMaterialBudget(x1, x2, param);
+ rho = param[0]*param[4];
+ x0 = param[1];
+ if (!tr.PropagateTo(xprop, x0, rho)) return distance;
+ //if (!tr.PropagateTo(xprop, 0.0, 0.0)) return distance;
+
+ // get propagated position at the end
+ tr.GetXYZ(x);
+ dx = TMath::Abs(x[0] - cl->X());
+ dy = TMath::Abs(x[1] - cl->Y());
+ dz = TMath::Abs(x[2] - cl->Z());
+ if (dx > fCutX || dy > fCutY || dz > fCutZ) return distance;
+
+ distance = TMath::Sqrt(dx*dx + dy*dy + dz*dz);
+
+ return distance;
+}
+//
+//------------------------------------------------------------------------------
+//
+Bool_t AliEMCALTracker::PropagateToEMCAL(AliEMCALTrack *tr)
+{
+ //
+ // Propagates the track to the proximity of the EMCAL surface
+ //
+
+ Double_t xcurr, xtemp, xprop = 438.0, step = 10.0, param[6], x0, rho, bz;
+ Double_t x1[3], x2[3];
+
+ // get initial track position
+ xcurr = tr->GetX();
+
+ // propagate by small steps
+ for (xtemp = xcurr + step; xtemp < xprop; xtemp += step) {
+ // to compute material budget, take current position and
+ // propagated hypothesis without energy loss
+ tr->GetXYZ(x1);
+ bz = tr->GetBz();
+ if (!tr->GetXYZAt(xtemp, bz, x2)) return kFALSE;
+ MeanMaterialBudget(x1, x2, param);
+ rho = param[0]*param[4];
+ x0 = param[1];
+ if (!tr->PropagateTo(xtemp, x0, rho)) return kFALSE;
+ }
+
+ return kTRUE;
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::CreateMatches()
+{
+ //
+ // Creation of matches between tracks and clusters.
+ // For each ESD track collected by ReadESD(), an AliEMCALTrack is made.
+ // If it finds a cluster close enough to its propagation to EMCAL,
+ // which passes all cuts, its index is stored.
+ // If many clusters are found which satisfy the criteria described above,
+ // only the closest one is stored.
+ // At this level, it is possible that two tracks share the same cluster.
+ //
+
+ // if matches collection is already present, it is deleted
+ if (fMatches) {
+ fMatches->Delete();
+ delete fMatches;
+ }
+ fMatches = new TList;
+
+ // initialize counters and indexes
+ Int_t count = 0;
+ Int_t ic, nClusters = (Int_t)fClusters->GetEntries();
+ Int_t it, nTracks = fTracks->GetEntries();
+
+ // external loop on clusters, internal loop on tracks
+ Double_t dist;
+ for (ic = 0; ic < nClusters; ic++) {
+ AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(ic);
+ for (it = 0; it < nTracks; it++) {
+ AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(it);
+ dist = CheckPair(track, cluster);
+ //cout << dist << endl;
+ if (dist <= fMaxDist) {
+ AliEMCALMatch *candidate = new AliEMCALMatch;
+ candidate->SetIndexT(it);
+ candidate->SetIndexC(ic);
+ candidate->SetDistance(dist);
+ candidate->SetPt(track->GetSignedPt());
+ fMatches->Add(candidate);
+ count++;
+ }
+ }
+ }
+
+ /*
+ // loop on clusters and tracks
+ Int_t icBest;
+ Double_t dist, distBest;
+ for (it = 0; it < nTracks; it++) {
+ AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(it);
+ if (!track) continue;
+ icBest = -1;
+ distBest = fMaxDist;
+ for (ic = 0; ic < nClusters; ic++) {
+ AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(ic);
+ if (!cluster) continue;
+ dist = CheckPair(track, cluster);
+ if (dist < distBest) {
+ distBest = dist;
+ icBest = ic;
+ }
+ }
+ if (icBest >= 0) {
+ track->SetMatchedClusterIndex(icBest);
+ track->SetMatchedClusterDist(distBest);
+ count++;
+ }
+ else {
+ track->SetMatchedClusterIndex(-1);
+ }
+ }
+ */
+
+ return count;
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::SolveCompetitions()
+{
+ //
+ // Match selector.
+ // The match list is sorted from the best to the worst match, w.r. to the
+ // distance between track prolongation and cluster position.
+ // Based on this criterion, starting from the first (best) match, a flag
+ // is set to both the involved track and cluster, and all matches containing
+ // an already used track or cluster are removed, leaving only the best match
+ // for each cluster.
+ //
+
+ // sort matches with respect to track-cluster distance
+ fMatches->Sort(kSortAscending);
+
+ // keep track of eliminated matches
+ Int_t count = 0;
+
+ // initialize flags to check repetitions
+ Int_t ic, nClusters = (Int_t)fClusters->GetEntries();
+ Int_t it, nTracks = fTracks->GetEntries();
+ Bool_t *usedC = new Bool_t[nClusters];
+ Bool_t *usedT = new Bool_t[nTracks];
+ for (ic = 0; ic < nClusters; ic++) usedC[ic] = kFALSE;
+ for (it = 0; it < nTracks; it++) usedT[it] = kFALSE;
+
+ // loop on matches
+ TListIter iter(fMatches);
+ AliEMCALMatch *match = 0;
+ while ( (match = (AliEMCALMatch*)iter.Next()) ) {
+ ic = match->GetIndexC();
+ it = match->GetIndexT();
+ if (!usedT[it] && !usedC[ic]) {
+ usedT[it] = kTRUE;
+ usedC[ic] = kTRUE;
+ match->CanBeSaved() = kTRUE;
+ }
+ else {
+ count++;
+ }
+ }
+
+ /*
+ Int_t it1, it2, nTracks = (Int_t)fTracks->GetEntries();
+ AliEMCALTrack *track1 = 0, *track2 = 0;
+ for (it1 = 0; it1 < nTracks; it1++) {
+ track1 = (AliEMCALTrack*)fTracks->At(it1);
+ if (!track1) continue;
+ if (track1->GetMatchedClusterIndex() < 0) continue;
+ for (it2 = it1+1; it2 < nTracks; it2++) {
+ track2 = (AliEMCALTrack*)fTracks->At(it2);
+ if (!track2) continue;
+ if (track2->GetMatchedClusterIndex() < 0) continue;
+ if (track1->GetMatchedClusterIndex() != track2->GetMatchedClusterIndex()) continue;
+ count++;
+ if (track1->GetMatchedClusterDist() < track2->GetMatchedClusterDist()) {
+ track2->SetMatchedClusterIndex(-1);
+ }
+ else if (track2->GetMatchedClusterDist() < track1->GetMatchedClusterDist()) {
+ track1->SetMatchedClusterIndex(-1);
+ }
+ }
+ }
+ */
+
+ delete [] usedC;
+ delete [] usedT;
+
+ return count;
+}
+//
+//------------------------------------------------------------------------------
+//
+void AliEMCALTracker::UnloadClusters()
+{
+ //
+ // Free memory from all arrays
+ // This method is called after the local tracking step
+ // so we can safely delete everything
+ //
+
+ Clear();
+}
+//
+//------------------------------------------------------------------------------
+//
+AliEMCALTracker::AliEMCALMatchCluster::AliEMCALMatchCluster(Int_t index, AliEMCALRecPoint *recPoint)
+ : fIndex(index),
+ fLabel(recPoint->GetPrimaryIndex()),
+ fX(0.),
+ fY(0.),
+ fZ(0.)
+{
+ //
+ // Translates an AliEMCALRecPoint object into the internal format.
+ // Index of passed cluster in its native array must be specified.
+ //
+ TVector3 clpos;
+ recPoint->GetGlobalPosition(clpos);
+
+ fX = clpos.X();
+ fY = clpos.Y();
+ fZ = clpos.Z();
+}
+//
+//------------------------------------------------------------------------------
+//
+AliEMCALTracker::AliEMCALMatchCluster::AliEMCALMatchCluster(Int_t index, AliESDCaloCluster *caloCluster)
+ : fIndex(index),
+ fLabel(caloCluster->GetLabel()),
+ fX(0.),
+ fY(0.),
+ fZ(0.)
+{
+ //
+ // Translates an AliESDCaloCluster object into the internal format.
+ // Index of passed cluster in its native array must be specified.
+ //
+ Float_t clpos[3];
+ caloCluster->GetPosition(clpos);
+
+ fX = (Double_t)clpos[0];
+ fY = (Double_t)clpos[1];
+ fZ = (Double_t)clpos[2];
+}
+//
+//------------------------------------------------------------------------------
+//
+Int_t AliEMCALTracker::AliEMCALMatch::Compare(const TObject *obj) const
+{
+ //
+ // Tracks compared wrt their distance from matched point
+ //
+
+ AliEMCALTracker::AliEMCALMatch *that = (AliEMCALTracker::AliEMCALMatch*)obj;
+
+ Double_t thisDist = fPt;//fDistance;
+ Double_t thatDist = that->fPt;//that->GetDistance();
+
+ if (thisDist > thatDist) return 1;
+ else if (thisDist < thatDist) return -1;
+ return 0;
+}
+
+AliEMCALTracker::AliEMCALMatch::AliEMCALMatch()
+ : TObject(),
+ fCanBeSaved(kFALSE),
+ fIndexC(0),
+ fIndexT(0),
+ fDistance(0.),
+ fPt(0.)
+{
+ //default constructor
+
+}
- // do current event; the loop over events is done by AliReconstruction::Run()
- pid.SetEventRange(eventNumber, eventNumber) ;
- if ( Debug() )
- pid.ExecuteTask("deb all") ;
- else
- pid.ExecuteTask("") ;
-
- return 0;
+AliEMCALTracker::AliEMCALMatch::AliEMCALMatch(const AliEMCALMatch& copy)
+ : TObject(),
+ fCanBeSaved(copy.fCanBeSaved),
+ fIndexC(copy.fIndexC),
+ fIndexT(copy.fIndexT),
+ fDistance(copy.fDistance),
+ fPt(copy.fPt)
+{
+ //copy ctor
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff