+/**************************************************************************
+ * Copyright(c) 1998-2007, 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. *
+ **************************************************************************/
+
+/* $Id$ */
+
+//-------------------------------------------------------------------------
+// Class for Kinematic Events
+// Author: Andreas Morsch, CERN
+//-------------------------------------------------------------------------
+#include <TArrow.h>
+#include <TMarker.h>
+#include <TH2F.h>
+#include <TTree.h>
+#include <TFile.h>
+#include <TParticle.h>
+#include <TClonesArray.h>
+#include <TObjArray.h>
+
+#include "AliLog.h"
+#include "AliMCEvent.h"
+#include "AliStack.h"
+#include "AliTrackReference.h"
+#include "AliHeader.h"
+
+
+AliMCEvent::AliMCEvent():
+ AliVEvent(),
+ fStack(0),
+ fMCParticles(new TClonesArray("AliMCParticle",1000)),
+ fMCParticleMap(0),
+ fHeader(0),
+ fTrackReferences(0),
+ fTreeTR(0),
+ fTmpTreeTR(0),
+ fTmpFileTR(0),
+ fNprimaries(-1),
+ fNparticles(-1)
+{
+ // Default constructor
+}
+
+AliMCEvent::AliMCEvent(const AliMCEvent& mcEvnt) :
+ AliVEvent(mcEvnt),
+ fStack(0),
+ fMCParticles(0),
+ fMCParticleMap(0),
+ fHeader(0),
+ fTrackReferences(0),
+ fTreeTR(0),
+ fTmpTreeTR(0),
+ fTmpFileTR(0),
+ fNprimaries(-1),
+ fNparticles(-1)
+{
+// Copy constructor
+}
+
+
+AliMCEvent& AliMCEvent::operator=(const AliMCEvent& mcEvnt)
+{
+ // assignment operator
+ if (this!=&mcEvnt) {
+ AliVEvent::operator=(mcEvnt);
+ }
+
+ return *this;
+}
+
+void AliMCEvent::ConnectTreeE (TTree* tree)
+{
+ // Connect the event header tree
+ tree->SetBranchAddress("Header", &fHeader);
+}
+
+void AliMCEvent::ConnectTreeK (TTree* tree)
+{
+ // Connect the kinematics tree to the stack
+ fStack = fHeader->Stack();
+ fStack->ConnectTree(tree);
+ //
+ // Load the event
+ fStack->GetEvent();
+ fNparticles = fStack->GetNtrack();
+ fNprimaries = fStack->GetNprimary();
+ AliInfo(Form("AliMCEvent: Number of particles: %5d (all) %5d (primaries)\n",
+ fNparticles, fNprimaries));
+
+ // This is a cache for the TParticles converted to MCParticles on user request
+ if (fMCParticleMap) {
+ fMCParticleMap->Clear();
+ if (fNparticles>0) fMCParticleMap->Expand(fNparticles);}
+ else
+ fMCParticleMap = new TObjArray(fNparticles);
+ fMCParticles->Clear();
+}
+
+void AliMCEvent::ConnectTreeTR (TTree* tree)
+{
+ // Connect the track reference tree
+ fTreeTR = tree;
+
+ if (fTreeTR->GetBranch("AliRun")) {
+ if (fTmpFileTR) {
+ fTmpFileTR->Close();
+ delete fTmpFileTR;
+ }
+ // This is an old format with one branch per detector not in synch with TreeK
+ ReorderAndExpandTreeTR();
+ } else {
+ // New format
+ fTreeTR->SetBranchAddress("TrackReferences", &fTrackReferences);
+ }
+}
+
+Int_t AliMCEvent::GetParticleAndTR(Int_t i, TParticle*& particle, TClonesArray*& trefs)
+{
+ // Retrieve entry i
+ if (i < 0 || i >= fNparticles) {
+ AliWarning(Form("AliMCEventHandler::GetEntry: Index out of range"));
+ particle = 0;
+ trefs = 0;
+ return (-1);
+ }
+ particle = fStack->Particle(i);
+ if (fTreeTR) {
+ fTreeTR->GetEntry(fStack->TreeKEntry(i));
+ trefs = fTrackReferences;
+ return trefs->GetEntries();
+ } else {
+ trefs = 0;
+ return -1;
+ }
+}
+
+
+void AliMCEvent::Clean()
+{
+ // Clean-up before new trees are connected
+
+ if (fHeader) {
+ delete fHeader;
+ fHeader = 0;
+ }
+
+ delete fStack;
+
+ // Clear TR
+ if (fTrackReferences) {
+ fTrackReferences->Clear();
+ delete fTrackReferences;
+ fTrackReferences = 0;
+ }
+}
+
+void AliMCEvent::FinishEvent()
+{
+ // Clean-up after event
+ fStack->Reset(0);
+}
+
+
+void AliMCEvent::DrawCheck(Int_t i, Int_t search)
+{
+ //
+ // Simple event display for debugging
+ if (!fTreeTR) {
+ AliWarning("No Track Reference information available");
+ return;
+ }
+
+ if (i > -1 && i < fNparticles) {
+ fTreeTR->GetEntry(fStack->TreeKEntry(i));
+ } else {
+ AliWarning("AliMCEvent::GetEntry: Index out of range");
+ }
+
+ Int_t nh = fTrackReferences->GetEntries();
+
+
+ if (search) {
+ while(nh <= search && i < fNparticles - 1) {
+ i++;
+ fTreeTR->GetEntry(fStack->TreeKEntry(i));
+ nh = fTrackReferences->GetEntries();
+ }
+ printf("Found Hits at %5d\n", i);
+ }
+ TParticle* particle = fStack->Particle(i);
+
+ TH2F* h = new TH2F("", "", 100, -500, 500, 100, -500, 500);
+ Float_t x0 = particle->Vx();
+ Float_t y0 = particle->Vy();
+
+ Float_t x1 = particle->Vx() + particle->Px() * 50.;
+ Float_t y1 = particle->Vy() + particle->Py() * 50.;
+
+ TArrow* a = new TArrow(x0, y0, x1, y1, 0.01);
+ h->Draw();
+ a->SetLineColor(2);
+
+ a->Draw();
+
+ for (Int_t ih = 0; ih < nh; ih++) {
+ AliTrackReference* ref = (AliTrackReference*) fTrackReferences->At(ih);
+ TMarker* m = new TMarker(ref->X(), ref->Y(), 20);
+ m->Draw();
+ m->SetMarkerSize(0.4);
+
+ }
+}
+
+
+void AliMCEvent::ReorderAndExpandTreeTR()
+{
+//
+// Reorder and expand the track reference tree in order to match the kinematics tree.
+// Copy the information from different branches into one
+//
+// TreeTR
+
+ fTmpFileTR = new TFile("TrackRefsTmp.root", "recreate");
+ fTmpTreeTR = new TTree("TreeTR", "TrackReferences");
+ if (!fTrackReferences) fTrackReferences = new TClonesArray("AliTrackReference", 100);
+ fTmpTreeTR->Branch("TrackReferences", "TClonesArray", &fTrackReferences, 32000, 0);
+
+
+//
+// Activate the used branches only. Otherwisw we get a bad memory leak.
+ fTreeTR->SetBranchStatus("*", 0);
+ fTreeTR->SetBranchStatus("AliRun.*", 1);
+ fTreeTR->SetBranchStatus("ITS.*", 1);
+ fTreeTR->SetBranchStatus("TPC.*", 1);
+ fTreeTR->SetBranchStatus("TRD.*", 1);
+ fTreeTR->SetBranchStatus("TOF.*", 1);
+ fTreeTR->SetBranchStatus("FRAME.*", 1);
+ fTreeTR->SetBranchStatus("MUON.*", 1);
+//
+// Connect the active branches
+ TClonesArray* trefs[7];
+ for (Int_t i = 0; i < 7; i++) trefs[i] = 0;
+ if (fTreeTR){
+ // make branch for central track references
+ if (fTreeTR->GetBranch("AliRun")) fTreeTR->SetBranchAddress("AliRun", &trefs[0]);
+ if (fTreeTR->GetBranch("ITS")) fTreeTR->SetBranchAddress("ITS", &trefs[1]);
+ if (fTreeTR->GetBranch("TPC")) fTreeTR->SetBranchAddress("TPC", &trefs[2]);
+ if (fTreeTR->GetBranch("TRD")) fTreeTR->SetBranchAddress("TRD", &trefs[3]);
+ if (fTreeTR->GetBranch("TOF")) fTreeTR->SetBranchAddress("TOF", &trefs[4]);
+ if (fTreeTR->GetBranch("FRAME")) fTreeTR->SetBranchAddress("FRAME", &trefs[5]);
+ if (fTreeTR->GetBranch("MUON")) fTreeTR->SetBranchAddress("MUON", &trefs[6]);
+ }
+
+ Int_t np = fStack->GetNprimary();
+ Int_t nt = fTreeTR->GetEntries();
+
+ //
+ // Loop over tracks and find the secondaries with the help of the kine tree
+ Int_t ifills = 0;
+ Int_t it = 0;
+ Int_t itlast = 0;
+ TParticle* part;
+
+ for (Int_t ip = np - 1; ip > -1; ip--) {
+ part = fStack->Particle(ip);
+// printf("Particle %5d %5d %5d %5d %5d %5d \n",
+// ip, part->GetPdgCode(), part->GetFirstMother(), part->GetFirstDaughter(),
+// part->GetLastDaughter(), part->TestBit(kTransportBit));
+
+ // Determine range of secondaries produced by this primary during transport
+ Int_t dau1 = part->GetFirstDaughter();
+ if (dau1 < np) continue; // This particle has no secondaries produced during transport
+ Int_t dau2 = -1;
+ if (dau1 > -1) {
+ Int_t inext = ip - 1;
+ while (dau2 < 0) {
+ if (inext >= 0) {
+ part = fStack->Particle(inext);
+ dau2 = part->GetFirstDaughter();
+ if (dau2 == -1 || dau2 < np) {
+ dau2 = -1;
+ } else {
+ dau2--;
+ }
+ } else {
+ dau2 = fStack->GetNtrack() - 1;
+ }
+ inext--;
+ } // find upper bound
+ } // dau2 < 0
+
+
+// printf("Check (1) %5d %5d %5d %5d %5d \n", ip, np, it, dau1, dau2);
+//
+// Loop over reference hits and find secondary label
+// First the tricky part: find the entry in treeTR than contains the hits or
+// make sure that no hits exist.
+//
+ Bool_t hasHits = kFALSE;
+ Bool_t isOutside = kFALSE;
+
+ it = itlast;
+ while (!hasHits && !isOutside && it < nt) {
+ fTreeTR->GetEntry(it++);
+ for (Int_t ib = 0; ib < 7; ib++) {
+ if (!trefs[ib]) continue;
+ Int_t nh = trefs[ib]->GetEntries();
+ for (Int_t ih = 0; ih < nh; ih++) {
+ AliTrackReference* tr = (AliTrackReference*) trefs[ib]->At(ih);
+ Int_t label = tr->Label();
+ if (label >= dau1 && label <= dau2) {
+ hasHits = kTRUE;
+ itlast = it - 1;
+ break;
+ }
+ if (label > dau2 || label < ip) {
+ isOutside = kTRUE;
+ itlast = it - 1;
+ break;
+ }
+ } // hits
+ if (hasHits || isOutside) break;
+ } // branches
+ } // entries
+
+ if (!hasHits) {
+ // Write empty entries
+ for (Int_t id = dau1; (id <= dau2); id++) {
+ fTmpTreeTR->Fill();
+ ifills++;
+ }
+ } else {
+ // Collect all hits
+ fTreeTR->GetEntry(itlast);
+ for (Int_t id = dau1; (id <= dau2) && (dau1 > -1); id++) {
+ for (Int_t ib = 0; ib < 7; ib++) {
+ if (!trefs[ib]) continue;
+ Int_t nh = trefs[ib]->GetEntries();
+ for (Int_t ih = 0; ih < nh; ih++) {
+ AliTrackReference* tr = (AliTrackReference*) trefs[ib]->At(ih);
+ Int_t label = tr->Label();
+ // Skip primaries
+ if (label == ip) continue;
+ if (label > dau2 || label < dau1)
+ printf("AliMCEventHandler::Track Reference Label out of range !: %5d %5d %5d %5d \n",
+ itlast, label, dau1, dau2);
+ if (label == id) {
+ // secondary found
+ tr->SetDetectorId(ib-1);
+ Int_t nref = fTrackReferences->GetEntriesFast();
+ TClonesArray &lref = *fTrackReferences;
+ new(lref[nref]) AliTrackReference(*tr);
+ }
+ } // hits
+ } // branches
+ fTmpTreeTR->Fill();
+ fTrackReferences->Clear();
+ ifills++;
+ } // daughters
+ } // has hits
+ } // tracks
+
+ //
+ // Now loop again and write the primaries
+ //
+ it = nt - 1;
+ for (Int_t ip = 0; ip < np; ip++) {
+ Int_t labmax = -1;
+ while (labmax < ip && it > -1) {
+ fTreeTR->GetEntry(it--);
+ for (Int_t ib = 0; ib < 7; ib++) {
+ if (!trefs[ib]) continue;
+ Int_t nh = trefs[ib]->GetEntries();
+ //
+ // Loop over reference hits and find primary labels
+ for (Int_t ih = 0; ih < nh; ih++) {
+ AliTrackReference* tr = (AliTrackReference*) trefs[ib]->At(ih);
+ Int_t label = tr->Label();
+ if (label < np && label > labmax) {
+ labmax = label;
+ }
+
+ if (label == ip) {
+ tr->SetDetectorId(ib-1);
+ Int_t nref = fTrackReferences->GetEntriesFast();
+ TClonesArray &lref = *fTrackReferences;
+ new(lref[nref]) AliTrackReference(*tr);
+ }
+ } // hits
+ } // branches
+ } // entries
+ it++;
+ fTmpTreeTR->Fill();
+ fTrackReferences->Clear();
+ ifills++;
+ } // tracks
+ // Check
+
+
+ // Clean-up
+ delete fTreeTR; fTreeTR = 0;
+
+ for (Int_t ib = 0; ib < 7; ib++) {
+ if (trefs[ib]) {
+ trefs[ib]->Clear();
+ delete trefs[ib];
+ trefs[ib] = 0;
+ }
+ }
+
+ if (ifills != fStack->GetNtrack())
+ printf("AliMCEvent:Number of entries in TreeTR (%5d) unequal to TreeK (%5d) \n",
+ ifills, fStack->GetNtrack());
+
+ fTmpTreeTR->Write();
+ fTreeTR = fTmpTreeTR;
+}
+
+AliMCParticle* AliMCEvent::GetTrack(Int_t i) const
+{
+ // Get MC Particle i
+ AliMCParticle *mcParticle;
+ TParticle *particle;
+
+ // Out of range check
+ if (i < 0 || i >= fNparticles) {
+ AliWarning(Form("AliMCEvent::GetEntry: Index out of range"));
+ mcParticle = 0;
+ return (mcParticle);
+ }
+
+
+ particle = fStack->Particle(i);
+ //
+ // First check of the MC Particle has been already cached
+ if(!fMCParticleMap->At(i)) {
+ Int_t nentries = fMCParticles->GetEntriesFast();
+ new ((*fMCParticles)[nentries]) AliMCParticle(particle);
+ mcParticle = dynamic_cast<AliMCParticle*>((*fMCParticles)[nentries]);
+ fMCParticleMap->AddAt(mcParticle, i);
+ } else {
+ mcParticle = dynamic_cast<AliMCParticle*>(fMCParticleMap->At(i));
+ }
+
+ return mcParticle;
+}
+
+inline AliGenEventHeader* AliMCEvent::GenEventHeader() {return (fHeader->GenEventHeader());}
+
+ClassImp(AliMCEvent)
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff