2 // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
4 /**************************************************************************
5 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
6 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for *
7 * full copyright notice. *
8 **************************************************************************/
10 // Import tracks from kinematics-tree / particle-stack.
11 // Preliminary/minimal solution.
13 #if !defined(__CINT__) || defined(__MAKECINT__)
15 #include <TParticlePDG.h>
17 #include <TEveManager.h>
18 #include <TEveTrackPropagator.h>
20 #include <EveBase/AliEveEventManager.h>
21 #include <EveBase/AliEveMagField.h>
22 #include <EveBase/AliEveTrack.h>
23 #include <EveBase/AliEveKineTools.h>
25 #include <AliRunLoader.h>
31 // Use magnetic-field as retrieved from GRP.
32 Bool_t g_kine_tracks_true_field = kTRUE;
34 // Use Runge-Kutta track stepper.
35 Bool_t g_kine_tracks_rk_stepper = kFALSE;
37 //==============================================================================
39 void kine_track_propagator_setup(TEveTrackPropagator* trkProp);
42 kine_tracks(Double_t min_pt = 0, Double_t min_p = 0,
43 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
44 Bool_t use_track_refs = kTRUE);
46 void kine_daughters(AliEveTrack* parent, AliStack* stack,
47 Double_t min_pt, Double_t min_p,
48 Bool_t pdg_col, Bool_t recurse);
50 void set_track_color(AliEveTrack* t, Bool_t pdg_col);
51 Color_t get_pdg_color(Int_t pdg);
54 kine_track(Int_t label,
55 Bool_t import_mother = kTRUE, Bool_t import_daughters = kTRUE,
56 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
57 TEveElement* cont = 0);
59 void kine_hide_neutrals(TEveElement* el=0, Int_t level=0);
61 //==============================================================================
63 void kine_track_propagator_setup(TEveTrackPropagator* trkProp)
65 AliMagF* fld = AliEveEventManager::AssertMagField();
67 if (g_kine_tracks_true_field)
69 trkProp->SetMagFieldObj(new AliEveMagField(fld));
73 trkProp->SetMagField(-0.1*fld->SolenoidField());
75 if (g_kine_tracks_rk_stepper)
77 trkProp->SetStepper(TEveTrackPropagator::kRungeKutta);
81 //==============================================================================
84 kine_tracks(Double_t min_pt, Double_t min_p,
85 Bool_t pdg_col, Bool_t recurse,
86 Bool_t use_track_refs)
88 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
90 AliStack* stack = rl->Stack();
93 Error("kine_tracks.C", "can not get kinematics.");
97 gEve->DisableRedraw();
99 TEveTrackList* cont = new TEveTrackList("Kine Tracks");
100 cont->SetMainColor(3);
101 TEveTrackPropagator* trkProp = cont->GetPropagator();
103 kine_track_propagator_setup(trkProp);
105 gEve->AddElement(cont);
107 Int_t Np = stack->GetNprimary();
108 for (Int_t i = 0; i < Np; ++i)
110 TParticle* p = stack->Particle(i);
111 if (p->GetStatusCode() <= 1)
113 if (p->Pt() < min_pt && p->P() < min_p) continue;
116 AliEveTrack* track = new AliEveTrack(p, i, trkProp);
118 //PH The line below is replaced waiting for a fix in Root
119 //PH which permits to use variable siza arguments in CINT
120 //PH on some platforms (alphalinuxgcc, solariscc5, etc.)
121 //PH track->SetName(Form("%s [%d]", p->GetName(), i));
123 sprintf(form,"%s [%d]", p->GetName(), i);
124 track->SetName(form);
125 track->SetStdTitle();
126 Int_t ml = p->GetMother(0);
129 track->SetTitle(Form("%s\nMother label=%d\nMother Pdg=%d",
130 track->GetElementTitle(),
131 ml, stack->Particle(ml)->GetPdgCode()));
133 set_track_color(track, pdg_col);
135 gEve->AddElement(track, cont);
138 kine_daughters(track, stack, min_pt, min_p, pdg_col, recurse);
144 kt.SetDaughterPathMarks(cont, stack, recurse);
145 if (use_track_refs && rl->LoadTrackRefs() == 0)
147 kt.SetTrackReferences(cont, rl->TreeTR(), recurse);
148 trkProp->SetEditPathMarks(kTRUE);
150 kt.SortPathMarks(cont, recurse);
152 //PH const Text_t* tooltip = Form("min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
154 sprintf(tooltip,"min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
155 cont->SetTitle(tooltip); // Not broadcasted automatically ...
157 cont->MakeTracks(recurse);
158 gEve->EnableRedraw();
164 void kine_daughters(AliEveTrack* parent, AliStack* stack,
165 Double_t min_pt, Double_t min_p,
166 Bool_t pdg_col, Bool_t recurse)
168 TParticle *p = stack->Particle(parent->GetLabel());
169 if (p->GetNDaughters() > 0)
171 TEveTrackPropagator* rs = parent->GetPropagator();
172 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
174 TParticle* dp = stack->Particle(d);
175 if (dp->Pt() < min_pt && dp->P() < min_p) continue;
177 AliEveTrack* dtrack = new AliEveTrack(dp, d, rs);
179 sprintf(form,"%s [%d]", dp->GetName(), d);
180 dtrack->SetName(form);
181 dtrack->SetStdTitle();
182 set_track_color(dtrack, pdg_col);
184 gEve->AddElement(dtrack, parent);
187 kine_daughters(dtrack, stack, min_pt, min_p, pdg_col, recurse);
192 //==============================================================================
194 void set_track_color(AliEveTrack* t, Bool_t pdg_col)
197 t->SetMainColor(get_pdg_color(t->GetPdg()));
202 Color_t get_pdg_color(Int_t pdg)
205 static const Color_t DefCol = 30;
206 static const Color_t ECol = 5;
207 static const Color_t MuCol = 6;
208 static const Color_t GammaCol = 7;
209 static const Color_t MesCol1 = 3;
210 static const Color_t MesCol2 = 38;
211 static const Color_t BarCol = 10;
213 Int_t pdga = TMath::Abs(pdg);
214 Color_t col = DefCol;
216 // elementary particles
224 col = GammaCol; break;
227 // mesons and barions
228 else if (pdga < 100000) {
230 // Int_t i0 = i%10; // Not used at the moment.
232 Int_t i1 = i%10; i /= 10;
233 Int_t i2 = i%10; i /= 10;
234 Int_t i3 = i%10; i /= 10;
236 //printf("pdg(%d) quark indices (%d,%d,%d,%d,%d) \n",pdg, i4,i3,i2, i1, i0);
238 if ((i3 == 0) && ( i4 < 2)){
239 col = MesCol1; // quarks: i1,i2 (spin = i0)
240 if(i1 == 3 || i2 == 3)
243 else if ( i2 >= i1 && i3 >= i2 ) {
244 col = BarCol; // quarks: i1,i2, i3 (spin = i0))
251 //==============================================================================
254 kine_track(Int_t label,
255 Bool_t import_mother, Bool_t import_daughters,
256 Bool_t pdg_col, Bool_t recurse,
259 // Create mother and daughters tracks with given label.
260 // mother -> particle with label
261 // daughters -> daughters of label
264 Warning("kine_track", "label not set.");
268 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
269 rl->LoadKinematics();
270 AliStack* stack = rl->Stack();
271 if (label >= stack->GetNtrack())
273 Warning("kine_track", "label out of range.");
277 TParticle* p = stack->Particle(label);
279 if (import_mother || (import_daughters && p->GetNDaughters()))
281 TEveTrackPropagator* rs = 0;
285 TEveTrackList* tlist = new TEveTrackList
286 (Form("Kinematics of %d", label, p->GetNDaughters()));
289 TEveTrackPropagator* trkProp = tlist->GetPropagator();
291 kine_track_propagator_setup(trkProp);
294 sprintf(tooltip,"Ndaughters=%d", p->GetNDaughters());
295 tlist->SetTitle(tooltip);
296 trkProp->SetMaxOrbs(2);
297 trkProp->SetEditPathMarks(kTRUE);
299 gEve->AddElement(cont);
300 rs = tlist->GetPropagator();
304 // check if container is TEveTrackList or AliEveTrack (has rnr-style)
305 AliEveTrack* t = dynamic_cast<AliEveTrack*>(cont);
307 rs = t->GetPropagator();
309 TEveTrackList* l = dynamic_cast<TEveTrackList*>(cont);
311 rs = l->GetPropagator();
313 Error("kine_tracks.C", "TrackRenderStyle not set.");
319 AliEveTrack* track = new AliEveTrack(p, label, rs);
321 sprintf(form,"%s [%d]", p->GetName(), label);
322 track->SetName(form);
323 track->SetStdTitle();
324 set_track_color(track, pdg_col);
327 gEve->AddElement(track, cont);
331 if (import_daughters && p->GetNDaughters())
333 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
335 TParticle* dp = stack->Particle(d);
336 AliEveTrack* track = new AliEveTrack(dp, d, rs);
338 sprintf(form,"%s [%d]", dp->GetName(), d);
339 track->SetName(form);
340 track->SetStdTitle();
341 set_track_color(track, pdg_col);
344 gEve->AddElement(track, cont);
347 kine_daughters(track, stack, 0, 0, pdg_col, recurse);
356 //==============================================================================
358 void kine_hide_neutrals(TEveElement* el, Int_t level)
362 el = gEve->GetCurrentEvent()->FindChild("Kine Tracks");
367 TEveTrack* t = dynamic_cast<TEveTrack*>(el);
368 if (t && t->GetCharge() == 0)
369 t->SetRnrSelf(kFALSE);
371 for (TEveElement::List_i i = el->BeginChildren(); i != el->EndChildren(); ++i)
373 kine_hide_neutrals(*i, level + 1);