--- /dev/null
+/****************************************************************************
+ * This macro is supposed to do reconstruction in the barrel ALICE trackers *
+ * (Make sure you have TPC digits and ITS hits before using this macro !!!) *
+ * It does the following steps (April 12, 2001): *
+ * 1) TPC cluster finding *
+ * 2) TPC track finding *
+ * 3) ITS cluster finding V2 (via fast points !) *
+ * 4) ITS track finding V2 *
+ * 5) ITS back track propagation V2 *
+ * 6) TPC back track propagation *
+ * (Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch) *
+ ****************************************************************************/
+
+#ifndef __CINT__
+ #include "alles.h"
+ #include "AliMagF.h"
+ #include "AliTPCtracker.h"
+
+ #include "AliITS.h"
+ #include "AliITSgeom.h"
+ #include "AliITSRecPoint.h"
+ #include "AliITSclusterV2.h"
+ #include "AliITSsimulationFastPoints.h"
+ #include "AliITStrackerV2.h"
+#endif
+
+Int_t TPCFindClusters(const Char_t *inname, const Char_t *outname);
+Int_t TPCFindTracks(const Char_t *inname, const Char_t *outname);
+Int_t TPCSortTracks(const Char_t *inname, const Char_t *outname);
+Int_t TPCPropagateBack(const Char_t *inname, const Char_t *outname);
+
+Int_t ITSFindClusters(const Char_t *inname, const Char_t *outname);
+Int_t ITSFindTracks(const Char_t *inname, const Char_t *outname);
+Int_t ITSPropagateBack(const Char_t *inname, const Char_t *outname);
+
+
+Int_t AliTPCtracknew() {
+ const Char_t *TPCdigName="galice.root";
+ const Char_t *TPCclsName="AliTPCclusters.root";
+ const Char_t *TPCtrkName="AliTPCtracks.root";
+
+ const Char_t *ITSdigName="galice.root";
+ const Char_t *ITSclsName="AliITSclustersV2.root";
+ const Char_t *ITStrkName="AliITStracksV2.root";
+
+ AliKalmanTrack::SetConvConst(100/0.299792458/0.2/gAlice->Field()->Factor());
+ // AliKalmanTrack::SetConvConst(100/0.299792458/0.2/2);
+// ********** Find TPC clusters *********** //
+ if (TPCFindClusters(TPCdigName,TPCclsName)) {
+ cerr<<"Failed to get TPC clusters !\n";
+ return 1;
+ }
+
+// ********** Find TPC tracks *********** //
+ if (TPCFindTracks(TPCclsName,TPCtrkName)) {
+ cerr<<"Failed to get TPC tracks !\n";
+ return 1;
+ }
+
+// ********** Sort and label TPC tracks *********** //
+ if (TPCSortTracks(TPCclsName,TPCtrkName)) {
+ cerr<<"Failed to sort TPC tracks !\n";
+ return 1;
+ }
+/*
+// ********** Find ITS clusters *********** //
+ if (ITSFindClusters(ITSdigName,ITSclsName)) {
+ cerr<<"Failed to get ITS clusters !\n";
+ return 1;
+ }
+
+// ********** Find ITS tracks *********** //
+ {TFile *clsFile=TFile::Open(ITSclsName);
+ if (ITSFindTracks(TPCtrkName,ITStrkName)) {
+ cerr<<"Failed to get ITS tracks !\n";
+ return 1;
+ }
+ clsFile->Close();}
+
+// ********** Back propagation of the ITS tracks *********** //
+ {TFile *clsFile=TFile::Open(ITSclsName);
+ if (ITSPropagateBack(ITStrkName,TPCtrkName)) {
+ cerr<<"Failed to propagate back the ITS tracks !\n";
+ return 1;
+ }
+ clsFile->Close();}
+
+
+// ********** Back propagation of the TPC tracks *********** //
+ {TFile *clsFile=TFile::Open(TPCclsName);
+ if (TPCPropagateBack(TPCtrkName,TPCtrkName)) {
+ cerr<<"Failed to propagate back the TPC tracks !\n";
+ return 1;
+ }
+ clsFile->Close();}
+*/
+ return 0;
+}
+
+
+Int_t TPCFindClusters(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="TPCFindClusters";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+
+ TFile *out=TFile::Open(outname,"recreate");
+ TFile *in =TFile::Open(inname);
+
+ AliTPCParam *param=(AliTPCParam *)in->Get("75x40_100x60");
+ if (!param) {cerr<<"TPC parameters have not been found !\n"; return 1;}
+ AliTPCv2 tpc;
+ tpc.SetParam(param);
+
+ tpc.Digits2Clusters(out);
+
+ in->Close();
+ out->Close();
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t TPCFindTracks(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="TPCFindTracks";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+ TFile *out=TFile::Open(outname,"recreate");
+ TFile *in =TFile::Open(inname);
+ AliTPCParam *param=(AliTPCParam *)in->Get("75x40_100x60");
+ if (!param) {cerr<<"TPC parameters have not been found !\n"; return 1;}
+
+ AliTPCtracker *tracker=new AliTPCtracker(param);
+ rc=tracker->Clusters2Tracks(0,out);
+ delete tracker;
+
+ in->Close();
+ out->Close();
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t TPCSortTracks(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="TPCSortTracks";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+
+ TFile *out=TFile::Open(outname);
+ TFile *in =TFile::Open(inname);
+ AliTPCParam *param=(AliTPCParam *)in->Get("75x40_100x60");
+ if (!param) {cerr<<"TPC parameters have not been found !\n"; return 1;}
+
+ TObjArray tarray(10000);
+ AliTPCtrack *iotrack=0;
+ Int_t i;
+
+ out->cd();
+ TTree *tracktree=(TTree*)out->Get("TPCf");
+ TBranch *tbranch=tracktree->GetBranch("tracks");
+ Int_t nentr=(Int_t)tracktree->GetEntries();
+ for (i=0; i<nentr; i++) {
+ iotrack=new AliTPCtrack;
+ tbranch->SetAddress(&iotrack);
+ tracktree->GetEvent(i);
+ tarray.AddLast(iotrack);
+ }
+ tarray.Sort();
+ out->Close();
+
+ //assign thacks GEANT labels
+ in->cd();
+ AliTPCtracker *tracker = new AliTPCtracker(param);
+ tracker->LoadInnerSectors();
+ tracker->LoadOuterSectors();
+ for (i=0; i<nentr; i++) {
+ iotrack=(AliTPCtrack*)tarray.UncheckedAt(i);
+ tracker->CookLabel(iotrack,0.1);
+ }
+ delete tracker;
+ in->Close();
+ //end of GEANT label assignment
+
+ out=TFile::Open(outname,"recreate");
+ tracktree=new TTree("TPCf","Tree with TPC tracks");
+ tracktree->Branch("tracks","AliTPCtrack",&iotrack,32000,0);
+ for (i=0; i<nentr; i++) {
+ iotrack=(AliTPCtrack*)tarray.UncheckedAt(i);
+ tracktree->Fill();
+ }
+ tracktree->Write();
+ out->Close();
+
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t ITSFindClusters(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="ITSFindClusters";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+ TFile *out=TFile::Open(outname,"recreate");
+ TFile *in =TFile::Open(inname,"update");
+
+ if (!(gAlice=(AliRun*)in->Get("gAlice"))) {
+ cerr<<"Can't get gAlice !\n";
+ return 1;
+ }
+ Int_t ev=0;
+ gAlice->GetEvent(ev);
+ AliITS *ITS = (AliITS*)gAlice->GetModule("ITS");
+ if (!ITS) { cerr<<"Can't get the ITS !\n"; return 1;}
+
+ gAlice->MakeTree("R"); ITS->MakeBranch("R",0);
+ //////////////// Taken from ITSHitsToFastPoints.C ///////////////////////
+ AliITSsimulationFastPoints *sim = new AliITSsimulationFastPoints();
+ for (Int_t i=0;i<3;i++) { ITS->SetSimulationModel(i,sim); }
+ Int_t nsignal=25;
+ Int_t size=-1;
+ Int_t bgr_ev=Int_t(ev/nsignal);
+ ITS->HitsToFastRecPoints(ev,bgr_ev,size," ","All"," ");
+ //////////////////////////////////////////////////////////////////////////
+
+ gAlice->GetEvent(ev);
+
+ AliITSgeom *geom=ITS->GetITSgeom();
+ out->cd();
+ geom->Write();
+
+ TClonesArray *clusters=new TClonesArray("AliITSclusterV2",10000);
+ TTree *cTree=new TTree("cTree","ITS clusters");
+ cTree->Branch("Clusters",&clusters);
+
+ TTree *pTree=gAlice->TreeR();
+ if (!pTree) { cerr<<"Can't get TreeR !\n"; return 1; }
+ TBranch *branch=pTree->GetBranch("ITSRecPoints");
+ if (!branch) { cerr<<"Can't get ITSRecPoints branch !\n"; return 1;}
+ TClonesArray *points=new TClonesArray("AliITSRecPoint",10000);
+ branch->SetAddress(&points);
+
+ TClonesArray &cl=*clusters;
+ Int_t nclusters=0;
+ Int_t nentr=(Int_t)pTree->GetEntries();
+ for (Int_t i=0; i<nentr; i++) {
+ if (!pTree->GetEvent(i)) {cTree->Fill(); continue;}
+ Int_t lay,lad,det; geom->GetModuleId(i,lay,lad,det);
+ Float_t x,y,zshift; geom->GetTrans(lay,lad,det,x,y,zshift);
+ Double_t rot[9]; geom->GetRotMatrix(lay,lad,det,rot);
+ Double_t yshift = x*rot[0] + y*rot[1];
+ Int_t ndet=(lad-1)*geom->GetNdetectors(lay) + (det-1);
+ Int_t ncl=points->GetEntriesFast();
+ nclusters+=ncl;
+ for (Int_t j=0; j<ncl; j++) {
+ AliITSRecPoint *p=(AliITSRecPoint*)points->UncheckedAt(j);
+ Float_t lp[5];
+ lp[0]=-p->GetX()-yshift; if (lay==1) lp[0]=-lp[0];
+ lp[1]=p->GetZ()+zshift;
+ lp[2]=p->GetSigmaX2();
+ lp[3]=p->GetSigmaZ2();
+ lp[4]=p->GetQ();
+ Int_t lab[6];
+ lab[0]=p->GetLabel(0);lab[1]=p->GetLabel(1);lab[2]=p->GetLabel(2);
+ lab[3]=ndet;
+
+ Int_t label=lab[0];
+ TParticle *part=(TParticle*)gAlice->Particle(label);
+ label=-3;
+ while (part->P() < 0.005) {
+ Int_t m=part->GetFirstMother();
+ if (m<0) {cerr<<"Primary momentum: "<<part->P()<<endl; break;}
+ label=m;
+ part=(TParticle*)gAlice->Particle(label);
+ }
+ if (lab[1]<0) lab[1]=label;
+ else if (lab[2]<0) lab[2]=label;
+ else cerr<<"No empty labels !\n";
+
+ new(cl[j]) AliITSclusterV2(lab,lp);
+ }
+ cTree->Fill(); clusters->Delete();
+ points->Delete();
+ }
+ cTree->Write();
+ cerr<<"Number of clusters: "<<nclusters<<endl;
+
+ delete cTree; delete clusters; delete points;
+
+ delete gAlice; gAlice=0;
+ in->Close();
+ out->Close();
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t ITSFindTracks(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="ITSFindTracks";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+
+ AliITSgeom *geom=(AliITSgeom*)gFile->Get("AliITSgeom");
+ if (!geom) { cerr<<"can't get ITS geometry !\n"; return 1;}
+ AliITStrackerV2 tracker(geom);
+
+ TFile *out=TFile::Open(outname,"recreate");
+ TFile *in =TFile::Open(inname);
+ rc=tracker.Clusters2Tracks(in,out);
+ in->Close();
+ out->Close();
+
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t ITSPropagateBack(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="ITSPropagateBack";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+
+ AliITSgeom *geom=(AliITSgeom*)gFile->Get("AliITSgeom");
+ if (!geom) { cerr<<"can't get ITS geometry !\n"; return 1;}
+ AliITStrackerV2 tracker(geom);
+
+ TFile *out=TFile::Open(outname,"update");
+ TFile *in =TFile::Open(inname);
+ rc=tracker.PropagateBack(in,out);
+ in->Close();
+ out->Close();
+
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
+Int_t TPCPropagateBack(const Char_t *inname, const Char_t *outname) {
+ Int_t rc=0;
+ const Char_t *name="TPCPropagateBack";
+ cerr<<'\n'<<name<<"...\n";
+ gBenchmark->Start(name);
+
+ AliTPCParam *param=(AliTPCParam *)gFile->Get("75x40_100x60");
+ if (!param) {cerr<<"TPC parameters have not been found !\n"; return 1;}
+ AliTPCtracker *tracker=new AliTPCtracker(param);
+
+ TFile *out=TFile::Open(outname,"update");
+ TFile *in =TFile::Open(inname);
+ rc=tracker->PropagateBack(in,out);
+ delete tracker;
+ in->Close();
+ out->Close();
+
+ gBenchmark->Stop(name);
+ gBenchmark->Show(name);
+
+ return rc;
+}
+
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