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 <TParticle.h>
16 #include <TParticlePDG.h>
18 #include <TEveManager.h>
19 #include <TEveTrackPropagator.h>
21 #include <EveBase/AliEveEventManager.h>
22 #include <EveBase/AliEveMagField.h>
23 #include <EveBase/AliEveTrack.h>
24 #include <EveBase/AliEveKineTools.h>
26 #include <AliRunLoader.h>
32 // Use magnetic-field as retrieved from GRP.
33 Bool_t g_kine_tracks_true_field = kTRUE;
35 // Use Runge-Kutta track stepper.
36 Bool_t g_kine_tracks_rk_stepper = kFALSE;
38 //==============================================================================
40 void kine_track_propagator_setup(TEveTrackPropagator* trkProp);
43 kine_tracks(Double_t min_pt = 0, Double_t min_p = 0,
44 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
45 Bool_t use_track_refs = kTRUE);
47 void kine_daughters(AliEveTrack* parent, AliStack* stack,
48 Double_t min_pt, Double_t min_p,
49 Bool_t pdg_col, Bool_t recurse);
51 void set_track_color(AliEveTrack* t, Bool_t pdg_col);
52 Color_t get_pdg_color(Int_t pdg);
55 kine_track(Int_t label,
56 Bool_t import_mother = kTRUE, Bool_t import_daughters = kTRUE,
57 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
58 TEveElement* cont = 0);
60 void kine_hide_neutrals(TEveElement* el=0, Int_t level=0);
62 //==============================================================================
64 void kine_track_propagator_setup(TEveTrackPropagator* trkProp)
66 AliMagF* fld = AliEveEventManager::AssertMagField();
68 if (g_kine_tracks_true_field)
70 trkProp->SetMagFieldObj(new AliEveMagField(fld));
74 trkProp->SetMagField(-0.1*fld->SolenoidField());
76 if (g_kine_tracks_rk_stepper)
78 trkProp->SetStepper(TEveTrackPropagator::kRungeKutta);
82 //==============================================================================
85 kine_tracks(Double_t min_pt, Double_t min_p,
86 Bool_t pdg_col, Bool_t recurse,
87 Bool_t use_track_refs)
89 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
91 AliStack* stack = rl->Stack();
94 Error("kine_tracks.C", "can not get kinematics.");
98 gEve->DisableRedraw();
100 TEveTrackList* cont = new TEveTrackList("Kine Tracks");
101 cont->SetMainColor(3);
102 TEveTrackPropagator* trkProp = cont->GetPropagator();
104 kine_track_propagator_setup(trkProp);
106 gEve->AddElement(cont);
108 Int_t Np = stack->GetNprimary();
109 for (Int_t i = 0; i < Np; ++i)
111 TParticle* p = stack->Particle(i);
112 if (p->GetStatusCode() <= 1)
114 if (p->Pt() < min_pt && p->P() < min_p) continue;
117 AliEveTrack* track = new AliEveTrack(p, i, trkProp);
119 //PH The line below is replaced waiting for a fix in Root
120 //PH which permits to use variable siza arguments in CINT
121 //PH on some platforms (alphalinuxgcc, solariscc5, etc.)
122 //PH track->SetName(Form("%s [%d]", p->GetName(), i));
124 sprintf(form,"%s [%d]", p->GetName(), i);
125 track->SetName(form);
126 track->SetStdTitle();
127 Int_t ml = p->GetMother(0);
130 track->SetTitle(Form("%s\nMother label=%d\nMother Pdg=%d",
131 track->GetElementTitle(),
132 ml, stack->Particle(ml)->GetPdgCode()));
134 set_track_color(track, pdg_col);
136 gEve->AddElement(track, cont);
139 kine_daughters(track, stack, min_pt, min_p, pdg_col, recurse);
145 kt.SetDaughterPathMarks(cont, stack, recurse);
146 if (use_track_refs && rl->LoadTrackRefs() == 0)
148 kt.SetTrackReferences(cont, rl->TreeTR(), recurse);
149 trkProp->SetEditPathMarks(kTRUE);
151 kt.SortPathMarks(cont, recurse);
153 //PH const Text_t* tooltip = Form("min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
155 sprintf(tooltip,"min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
156 cont->SetTitle(tooltip); // Not broadcasted automatically ...
158 cont->MakeTracks(recurse);
159 gEve->EnableRedraw();
165 void kine_daughters(AliEveTrack* parent, AliStack* stack,
166 Double_t min_pt, Double_t min_p,
167 Bool_t pdg_col, Bool_t recurse)
169 TParticle *p = stack->Particle(parent->GetLabel());
170 if (p->GetNDaughters() > 0)
172 TEveTrackPropagator* rs = parent->GetPropagator();
173 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
175 TParticle* dp = stack->Particle(d);
176 if (dp->Pt() < min_pt && dp->P() < min_p) continue;
178 AliEveTrack* dtrack = new AliEveTrack(dp, d, rs);
180 sprintf(form,"%s [%d]", dp->GetName(), d);
181 dtrack->SetName(form);
182 dtrack->SetStdTitle();
183 set_track_color(dtrack, pdg_col);
185 gEve->AddElement(dtrack, parent);
188 kine_daughters(dtrack, stack, min_pt, min_p, pdg_col, recurse);
193 //==============================================================================
195 void set_track_color(AliEveTrack* t, Bool_t pdg_col)
198 t->SetMainColor(get_pdg_color(t->GetPdg()));
203 Color_t get_pdg_color(Int_t pdg)
206 static const Color_t DefCol = 30;
207 static const Color_t ECol = 5;
208 static const Color_t MuCol = 6;
209 static const Color_t GammaCol = 7;
210 static const Color_t MesCol1 = 3;
211 static const Color_t MesCol2 = 38;
212 static const Color_t BarCol = 10;
214 Int_t pdga = TMath::Abs(pdg);
215 Color_t col = DefCol;
217 // elementary particles
225 col = GammaCol; break;
228 // mesons and barions
229 else if (pdga < 100000) {
231 // Int_t i0 = i%10; // Not used at the moment.
233 Int_t i1 = i%10; i /= 10;
234 Int_t i2 = i%10; i /= 10;
235 Int_t i3 = i%10; i /= 10;
237 //printf("pdg(%d) quark indices (%d,%d,%d,%d,%d) \n",pdg, i4,i3,i2, i1, i0);
239 if ((i3 == 0) && ( i4 < 2)){
240 col = MesCol1; // quarks: i1,i2 (spin = i0)
241 if(i1 == 3 || i2 == 3)
244 else if ( i2 >= i1 && i3 >= i2 ) {
245 col = BarCol; // quarks: i1,i2, i3 (spin = i0))
252 //==============================================================================
255 kine_track(Int_t label,
256 Bool_t import_mother, Bool_t import_daughters,
257 Bool_t pdg_col, Bool_t recurse,
260 // Create mother and daughters tracks with given label.
261 // mother -> particle with label
262 // daughters -> daughters of label
265 Warning("kine_track", "label not set.");
269 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
270 rl->LoadKinematics();
271 AliStack* stack = rl->Stack();
272 if (label >= stack->GetNtrack())
274 Warning("kine_track", "label out of range.");
278 TParticle* p = stack->Particle(label);
280 if (import_mother || (import_daughters && p->GetNDaughters()))
282 TEveTrackPropagator* rs = 0;
286 TEveTrackList* tlist = new TEveTrackList
287 (Form("Kinematics of %d", label, p->GetNDaughters()));
290 TEveTrackPropagator* trkProp = tlist->GetPropagator();
292 kine_track_propagator_setup(trkProp);
295 sprintf(tooltip,"Ndaughters=%d", p->GetNDaughters());
296 tlist->SetTitle(tooltip);
297 trkProp->SetMaxOrbs(2);
298 trkProp->SetEditPathMarks(kTRUE);
300 gEve->AddElement(cont);
301 rs = tlist->GetPropagator();
305 // check if container is TEveTrackList or AliEveTrack (has rnr-style)
306 AliEveTrack* t = dynamic_cast<AliEveTrack*>(cont);
308 rs = t->GetPropagator();
310 TEveTrackList* l = dynamic_cast<TEveTrackList*>(cont);
312 rs = l->GetPropagator();
314 Error("kine_tracks.C", "TrackRenderStyle not set.");
320 AliEveTrack* track = new AliEveTrack(p, label, rs);
322 sprintf(form,"%s [%d]", p->GetName(), label);
323 track->SetName(form);
324 track->SetStdTitle();
325 set_track_color(track, pdg_col);
328 gEve->AddElement(track, cont);
332 if (import_daughters && p->GetNDaughters())
334 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
336 TParticle* dp = stack->Particle(d);
337 AliEveTrack* track = new AliEveTrack(dp, d, rs);
339 sprintf(form,"%s [%d]", dp->GetName(), d);
340 track->SetName(form);
341 track->SetStdTitle();
342 set_track_color(track, pdg_col);
345 gEve->AddElement(track, cont);
348 kine_daughters(track, stack, 0, 0, pdg_col, recurse);
357 //==============================================================================
359 void kine_hide_neutrals(TEveElement* el, Int_t level)
363 el = gEve->GetCurrentEvent()->FindChild("Kine Tracks");
368 TEveTrack* t = dynamic_cast<TEveTrack*>(el);
369 if (t && t->GetCharge() == 0)
370 t->SetRnrSelf(kFALSE);
372 for (TEveElement::List_i i = el->BeginChildren(); i != el->EndChildren(); ++i)
374 kine_hide_neutrals(*i, level + 1);