Adding muon related macros in EVE in documentation
[u/mrichter/AliRoot.git] / EVE / alice-macros / muon_trackRefs.C
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39d6561a 1// $Id$
2
3/**************************************************************************
4 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
5 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for *
6 * full copyright notice. *
7 **************************************************************************/
8
9// Macro to visualise trackRef in MUON spectrometer
10// (both tracker and trigger).
11//
12// Use muon_trackRefs(Bool_t showSimClusters) in order to run it
13//
14// Needs that alieve_init() is already called
15
16#if !defined(__CINT__) || defined(__MAKECINT__)
17
18#include "AliMUONClusterStoreV2.h"
19#include "AliMUONRawClusterV2.h"
20#include "AliMUONVCluster.h"
21#include "AliMUONConstants.h"
22#include "AliMUONRecoParam.h"
23#include "AliMUONCDB.h"
24
25#include "AliRunLoader.h"
26#include "AliStack.h"
27#include "AliTrackReference.h"
28
29#include "EveBase/AliEveMagField.h"
30#include "EveBase/AliEveTrack.h"
31#include "EveBase/AliEveEventManager.h"
32
33#include <TEveManager.h>
34#include <TEveUtil.h>
35#include <TEveTrack.h>
36#include <TEvePointSet.h>
37#include <TEveVSDStructs.h>
38#include <TEveTrackPropagator.h>
39
40#include <TClonesArray.h>
41#include <TTree.h>
42#include <TParticle.h>
43#include <TMath.h>
44#include <TROOT.h>
45
46#endif
47
39d6561a 48//______________________________________________________________________________
49void muon_trackRef_propagator_setup(TEveTrackPropagator* trkProp, Bool_t showVertex)
50{
51 // set magnetic field
52 trkProp->SetMagFieldObj(new AliEveMagField);
53 trkProp->SetStepper(TEveTrackPropagator::kRungeKutta);
54
55 // set propagation range
56 trkProp->SetMaxR(500.);
57 trkProp->SetMaxZ(-AliMUONConstants::DefaultChamberZ(13)+3.5);
58
59 // go through pathmarks
60 trkProp->SetFitDaughters(kFALSE);
61 trkProp->SetFitReferences(kTRUE);
62 trkProp->SetFitDecay(kTRUE);
63 trkProp->SetFitCluster2Ds(kFALSE);
64
65 // Render first vertex if required
66 if (showVertex)
67 {
68 trkProp->SetRnrFV(kTRUE);
69 trkProp->RefFVAtt().SetMarkerSize(0.5);
70 trkProp->RefFVAtt().SetMarkerColor(kRed);
71 }
72}
73
74//______________________________________________________________________________
75Bool_t isReconstructible(Bool_t* chHit)
76{
2fcde5f6 77 // load recoParam from OCDB
78 static AliMUONRecoParam* gRecoParam = 0x0;
79 static UInt_t gRequestedStationMask = 0;
80 static Bool_t gRequest2ChInSameSt45 = kFALSE;
81 if (!gRecoParam)
82 {
83 gRecoParam = AliMUONCDB::LoadRecoParam();
84 if (!gRecoParam) exit(-1);
85 // compute the mask of requested stations
86 gRequestedStationMask = 0;
87 for (Int_t i = 0; i < 5; i++) if (gRecoParam->RequestStation(i)) gRequestedStationMask |= ( 1 << i );
88 // get whether a track need 2 chambers hit in the same station (4 or 5) or not to be reconstructible
89 gRequest2ChInSameSt45 = !gRecoParam->MakeMoreTrackCandidates();
90 }
91
39d6561a 92 // check which chambers are hit
93 UInt_t presentStationMask(0);
94 Int_t nChHitInSt4 = 0, nChHitInSt5 = 0;
95 for (Int_t ich=0; ich<10; ich++)
96 {
97 if (!chHit[ich]) continue;
98 Int_t ist = ich/2;
99 presentStationMask |= ( 1 << ist );
100 if (ist == 3) nChHitInSt4++;
101 if (ist == 4) nChHitInSt5++;
102 }
103
104 // at least one cluster per requested station
105 if ((gRequestedStationMask & presentStationMask) != gRequestedStationMask) return kFALSE;
106
107 // 2 chambers hit in the same station (4 or 5)
108 if (gRequest2ChInSameSt45) return (nChHitInSt4 == 2 || nChHitInSt5 == 2);
109 // or 2 chambers hit in station 4 & 5 together
110 else return (nChHitInSt4+nChHitInSt5 >= 2);
111}
112
113//______________________________________________________________________________
114void add_muon_trackRefs(AliStack* stack, TTree* treeTR, TEveTrackList* reco, TEveTrackList* other,
115 TEvePointSet* RecoClusters, TEvePointSet* OtherClusters)
116{
117 TClonesArray* trackRefs = 0;
118 treeTR->SetBranchAddress("TrackReferences", &trackRefs);
119 Int_t nSimTracks = stack->GetNtrack();
120 AliMUONClusterStoreV2 clusters;
121 TClonesArray clustersTrigger("AliMUONRawClusterV2", 10);
122
123 // loop over simulated track
124 for (Int_t itr = 0; itr < nSimTracks; itr++)
125 {
126 treeTR->GetEntry(stack->TreeKEntry(itr));
127 Int_t nTrackRefs = trackRefs->GetEntriesFast();
128 if (nTrackRefs <= 0) continue;
129
130 TEveTrack* track = 0x0;
131 Bool_t chHit[10];
132 for (Int_t ich=0; ich<10; ich++) chHit[ich] = kFALSE;
133
134 // loop over simulated track hits
135 for (Int_t itrR = 0; itrR < nTrackRefs; ++itrR)
136 {
137 AliTrackReference* atr = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(itrR));
138
139 // skip trackRefs not in MUON
140 if (atr->DetectorId() != AliTrackReference::kMUON) continue;
141
142 // record chamber hit
143 Int_t detElemId = atr->UserId();
144 Int_t chamberId = detElemId / 100 - 1;
145 if (chamberId < 0) continue;
146 if (chamberId < 10) chHit[chamberId] = kTRUE;
147
148 // produce eve track if not already done
149 if (!track)
150 {
151 TParticle* p = stack->Particle(itr);
152 track = new AliEveTrack(p, itr, 0x0);
153 track->SetName(Form("%s [%d]", p->GetName(), itr));
154 track->SetStdTitle();
155 track->SetSourceObject(p);
156
157 clusters.Clear();
158 clustersTrigger.Clear("C");
159 }
160
161 // add path mark
162 track->AddPathMark(TEvePathMark(TEvePathMark::kReference,
163 TEveVector(atr->X(), atr->Y(), atr->Z()),
164 TEveVector(atr->Px(), atr->Py(), atr->Pz()),
165 atr->GetTime()));
166
167 // produce clusters if required
168 if (RecoClusters || OtherClusters)
169 {
170 // from tracker
171 if (chamberId < 10)
172 {
173 // produce a new cluster on that DE or update existing one
174 AliMUONVCluster* cl = 0x0;
175 Int_t clNum = -1;
176 do cl = clusters.FindObject(AliMUONVCluster::BuildUniqueID(chamberId, detElemId, ++clNum));
177 while (cl && cl->GetNDigits() == 2);
178 if (cl) {
179 cl->SetXYZ((cl->GetX() + atr->X()) / 2., (cl->GetY() + atr->Y()) / 2., (cl->GetZ() + atr->Z()) / 2.);
180 }
181 else
182 {
183 cl = clusters.Add(chamberId, detElemId, clNum);
184 cl->SetXYZ(atr->X(), atr->Y(), atr->Z());
185 }
186 cl->AddDigitId((UInt_t)itrR);
187 }
188 else // from trigger
189 {
190 AliMUONVCluster* cl = new(clustersTrigger[clustersTrigger.GetLast()+1]) AliMUONRawClusterV2();
191 cl->SetXYZ(atr->X(), atr->Y(), atr->Z());
192 }
193 }
194 }
195
196 if (track)
197 {
198 track->SortPathMarksByTime();
199 // stop track propagation at last path mark
200 track->RefPathMarks().back().fType = TEvePathMark::kDecay;
201
202 // add the track and trackRefs to proper lists
203 if (isReconstructible(chHit)) {
204 track->SetPropagator(reco->GetPropagator());
205 track->SetAttLineAttMarker(reco);
206 reco->AddElement(track);
207
208 // trackRefs
209 if (RecoClusters)
210 {
211 // tracker
212 TIter next(clusters.CreateIterator());
213 gROOT->ProcessLine(Form("add_muon_clusters((TIter*)%p, (TEvePointSet*)%p);",&next, RecoClusters));
214 // trigger
215 TIter next2(clustersTrigger.MakeIterator());
216 gROOT->ProcessLine(Form("add_muon_clusters((TIter*)%p, (TEvePointSet*)%p);",&next2, RecoClusters));
217 }
218 }
219 else {
220 track->SetPropagator(other->GetPropagator());
221 track->SetAttLineAttMarker(other);
222 other->AddElement(track);
223
224 // trackRefs
225 if (OtherClusters)
226 {
227 // tracker
228 TIter next(clusters.CreateIterator());
229 gROOT->ProcessLine(Form("add_muon_clusters((TIter*)%p, (TEvePointSet*)%p);",&next, OtherClusters));
230 // trigger
231 TIter next2(clustersTrigger.MakeIterator());
232 gROOT->ProcessLine(Form("add_muon_clusters((TIter*)%p, (TEvePointSet*)%p);",&next2, OtherClusters));
233 }
234 }
235 }
236 }
237 delete trackRefs;
238}
239
240//______________________________________________________________________________
241void muon_trackRefs(Bool_t showSimClusters)
242{
243 // load kinematics and trackRefs
244 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
245 rl->LoadKinematics();
246 AliStack* stack = rl->Stack();
247 if (!stack) return;
248 rl->LoadTrackRefs();
249 TTree* treeTR = rl->TreeTR();
250 if (!treeTR) return;
251
39d6561a 252 // track containers
253 TEveElementList* trackCont = new TEveElementList("Sim MUON Tracks");
254
255 TEveTrackList* reco = new TEveTrackList("reconstructible");
256 reco->SetRnrPoints(kFALSE);
257 reco->SetRnrLine(kTRUE);
258 reco->SetLineColor(kRed);
259 reco->SetLineStyle(2);
260 muon_trackRef_propagator_setup(reco->GetPropagator(), kTRUE);
261 trackCont->AddElement(reco);
262
263 TEveTrackList* other = new TEveTrackList("others");
264 other->SetRnrPoints(kFALSE);
265 other->SetRnrLine(kTRUE);
266 other->SetLineColor(kWhite);
267 other->SetLineStyle(3);
268 muon_trackRef_propagator_setup(other->GetPropagator(), kFALSE);
269 trackCont->AddElement(other);
270
271 // cluster container
272 TEveElementList* clusterCont = 0x0;
273 TEvePointSet* RecoClusters = 0x0;
274 TEvePointSet* OtherClusters = 0x0;
275 if (showSimClusters)
276 {
277 clusterCont = new TEveElementList("Sim MUON Clusters");
278
279 RecoClusters = new TEvePointSet(1000);
280 RecoClusters->SetName("Reconstructibles");
281 RecoClusters->SetPickable(kFALSE);
282 RecoClusters->SetMarkerStyle(2);
283 RecoClusters->SetMarkerColor(kRed);
284 RecoClusters->SetMarkerSize(0.5);
285 clusterCont->AddElement(RecoClusters);
286
287 OtherClusters = new TEvePointSet(10000);
288 OtherClusters->SetName("Others");
289 OtherClusters->SetPickable(kFALSE);
290 OtherClusters->SetMarkerStyle(2);
291 OtherClusters->SetMarkerColor(kWhite);
292 OtherClusters->SetMarkerSize(0.5);
293 clusterCont->AddElement(OtherClusters);
294
295 TEveUtil::LoadMacro("muon_clusters.C+");
296 }
297
298 // add tracks to the proper list and propagate them. Add also clusters if required.
299 add_muon_trackRefs(stack, treeTR, reco, other, RecoClusters, OtherClusters);
300 reco->MakeTracks();
301 other->MakeTracks();
302 trackCont->SetTitle(Form("N=%d", reco->NumChildren()+other->NumChildren()));
303 reco->SetTitle(Form("N=%d",reco->NumChildren()));
304 other->SetTitle(Form("N=%d",other->NumChildren()));
305 if (showSimClusters)
306 {
307 clusterCont->SetTitle(Form("N=%d",RecoClusters->GetLastPoint()+OtherClusters->GetLastPoint()+2));
308 RecoClusters->SetTitle(Form("N=%d",RecoClusters->GetLastPoint()+1));
309 OtherClusters->SetTitle(Form("N=%d",OtherClusters->GetLastPoint()+1));
310 }
311
312 // add graphic containers
313 gEve->DisableRedraw();
314 gEve->AddElement(trackCont);
315 if (clusterCont) gEve->AddElement(clusterCont);
316 gEve->EnableRedraw();
317 gEve->Redraw3D();
318}