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 /// \ingroup evemacros
11 /// \file kine_tracks.C
12 /// \brief Import tracks from kinematics-tree / particle-stack.
14 /// Preliminary/minimal solution.
16 /// \author Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
18 #if !defined(__CINT__) || defined(__MAKECINT__)
19 #include <TParticle.h>
20 #include <TParticlePDG.h>
21 #include <TEveManager.h>
22 #include <TEveTrackPropagator.h>
26 #include <AliRunLoader.h>
27 #include <AliEveEventManager.h>
28 #include <AliEveMagField.h>
29 #include <AliEveTrack.h>
30 #include <AliEveKineTools.h>
33 // Use magnetic-field as retrieved from GRP.
34 Bool_t g_kine_tracks_true_field = kTRUE;
36 // Use Runge-Kutta track stepper.
37 Bool_t g_kine_tracks_rk_stepper = kFALSE;
39 //==============================================================================
41 void kine_track_propagator_setup(TEveTrackPropagator* trkProp);
44 kine_tracks(Double_t min_pt = 0, Double_t min_p = 0,
45 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
46 Bool_t use_track_refs = kTRUE);
48 void kine_daughters(AliEveTrack* parent, AliStack* stack,
49 Double_t min_pt, Double_t min_p,
50 Bool_t pdg_col, Bool_t recurse);
52 void set_track_color(AliEveTrack* t, Bool_t pdg_col);
53 Color_t get_pdg_color(Int_t pdg);
56 kine_track(Int_t label,
57 Bool_t import_mother = kTRUE, Bool_t import_daughters = kTRUE,
58 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
59 TEveElement* cont = 0);
61 void kine_hide_neutrals(TEveElement* el=0, Int_t level=0);
63 //==============================================================================
65 void kine_track_propagator_setup(TEveTrackPropagator* trkProp)
67 AliMagF* fld = AliEveEventManager::AssertMagField();
69 if (g_kine_tracks_true_field)
71 trkProp->SetMagFieldObj(new AliEveMagField(fld));
75 trkProp->SetMagField(-0.1*fld->SolenoidField());
77 if (g_kine_tracks_rk_stepper)
79 trkProp->SetStepper(TEveTrackPropagator::kRungeKutta);
83 //==============================================================================
86 kine_tracks(Double_t min_pt, Double_t min_p,
87 Bool_t pdg_col, Bool_t recurse,
88 Bool_t use_track_refs)
90 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
92 AliStack* stack = rl->Stack();
95 Error("kine_tracks", "can not get kinematics.");
99 gEve->DisableRedraw();
101 TEveTrackList* cont = new TEveTrackList("Kine Tracks");
102 cont->SetMainColor(3);
103 TEveTrackPropagator* trkProp = cont->GetPropagator();
105 kine_track_propagator_setup(trkProp);
107 gEve->AddElement(cont);
109 Int_t Np = stack->GetNprimary();
110 for (Int_t i = 0; i < Np; ++i)
112 TParticle* p = stack->Particle(i);
113 if (p->GetStatusCode() <= 1)
115 if (p->Pt() < min_pt && p->P() < min_p) continue;
118 AliEveTrack* track = new AliEveTrack(p, i, trkProp);
120 //PH The line below is replaced waiting for a fix in Root
121 //PH which permits to use variable siza arguments in CINT
122 //PH on some platforms (alphalinuxgcc, solariscc5, etc.)
123 //PH track->SetName(Form("%s [%d]", p->GetName(), i));
125 sprintf(form,"%s [%d]", p->GetName(), i);
126 track->SetName(form);
127 track->SetStdTitle();
128 Int_t ml = p->GetMother(0);
131 track->SetTitle(Form("%s\nMother label=%d\nMother Pdg=%d",
132 track->GetElementTitle(),
133 ml, stack->Particle(ml)->GetPdgCode()));
135 set_track_color(track, pdg_col);
137 gEve->AddElement(track, cont);
140 kine_daughters(track, stack, min_pt, min_p, pdg_col, recurse);
146 kt.SetDaughterPathMarks(cont, stack, recurse);
147 if (use_track_refs && rl->LoadTrackRefs() == 0)
149 kt.SetTrackReferences(cont, rl->TreeTR(), recurse);
150 trkProp->SetEditPathMarks(kTRUE);
152 kt.SortPathMarks(cont, recurse);
154 //PH const Text_t* tooltip = Form("min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
156 sprintf(tooltip,"min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
157 cont->SetTitle(tooltip); // Not broadcasted automatically ...
159 cont->MakeTracks(recurse);
160 gEve->EnableRedraw();
166 void kine_daughters(AliEveTrack* parent, AliStack* stack,
167 Double_t min_pt, Double_t min_p,
168 Bool_t pdg_col, Bool_t recurse)
170 TParticle *p = stack->Particle(parent->GetLabel());
171 if (p->GetNDaughters() > 0)
173 TEveTrackPropagator* rs = parent->GetPropagator();
174 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
176 TParticle* dp = stack->Particle(d);
177 if (dp->Pt() < min_pt && dp->P() < min_p) continue;
179 AliEveTrack* dtrack = new AliEveTrack(dp, d, rs);
181 sprintf(form,"%s [%d]", dp->GetName(), d);
182 dtrack->SetName(form);
183 dtrack->SetStdTitle();
184 set_track_color(dtrack, pdg_col);
186 gEve->AddElement(dtrack, parent);
189 kine_daughters(dtrack, stack, min_pt, min_p, pdg_col, recurse);
194 //==============================================================================
196 void set_track_color(AliEveTrack* t, Bool_t pdg_col)
199 t->SetMainColor(get_pdg_color(t->GetPdg()));
204 Color_t get_pdg_color(Int_t pdg)
207 static const Color_t DefCol = 30;
208 static const Color_t ECol = 5;
209 static const Color_t MuCol = 6;
210 static const Color_t GammaCol = 7;
211 static const Color_t MesCol1 = 3;
212 static const Color_t MesCol2 = 38;
213 static const Color_t BarCol = 10;
215 Int_t pdga = TMath::Abs(pdg);
216 Color_t col = DefCol;
218 // elementary particles
226 col = GammaCol; break;
229 // mesons and barions
230 else if (pdga < 100000) {
232 // Int_t i0 = i%10; // Not used at the moment.
234 Int_t i1 = i%10; i /= 10;
235 Int_t i2 = i%10; i /= 10;
236 Int_t i3 = i%10; i /= 10;
238 //printf("pdg(%d) quark indices (%d,%d,%d,%d,%d) \n",pdg, i4,i3,i2, i1, i0);
240 if ((i3 == 0) && ( i4 < 2)){
241 col = MesCol1; // quarks: i1,i2 (spin = i0)
242 if(i1 == 3 || i2 == 3)
245 else if ( i2 >= i1 && i3 >= i2 ) {
246 col = BarCol; // quarks: i1,i2, i3 (spin = i0))
253 //==============================================================================
256 kine_track(Int_t label,
257 Bool_t import_mother, Bool_t import_daughters,
258 Bool_t pdg_col, Bool_t recurse,
261 // Create mother and daughters tracks with given label.
262 // mother -> particle with label
263 // daughters -> daughters of label
266 Warning("kine_track", "label not set.");
270 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
271 rl->LoadKinematics();
272 AliStack* stack = rl->Stack();
275 Warning("kine_track", "can not get kinematics.");
278 if (label >= stack->GetNtrack())
280 Warning("kine_track", "label out of range.");
284 TParticle* p = stack->Particle(label);
286 if (import_mother || (import_daughters && p->GetNDaughters()))
288 TEveTrackPropagator* rs = 0;
292 TEveTrackList* tlist = new TEveTrackList
293 (Form("Kinematics of %d %d", label, p->GetNDaughters()));
296 TEveTrackPropagator* trkProp = tlist->GetPropagator();
298 kine_track_propagator_setup(trkProp);
301 sprintf(tooltip,"Ndaughters=%d", p->GetNDaughters());
302 tlist->SetTitle(tooltip);
303 trkProp->SetMaxOrbs(2);
304 trkProp->SetEditPathMarks(kTRUE);
306 gEve->AddElement(cont);
307 rs = tlist->GetPropagator();
311 // check if container is TEveTrackList or AliEveTrack (has rnr-style)
312 AliEveTrack* t = dynamic_cast<AliEveTrack*>(cont);
314 rs = t->GetPropagator();
316 TEveTrackList* l = dynamic_cast<TEveTrackList*>(cont);
318 rs = l->GetPropagator();
320 Error("kine_tracks.C", "TrackRenderStyle not set.");
326 AliEveTrack* track = new AliEveTrack(p, label, rs);
328 sprintf(form,"%s [%d]", p->GetName(), label);
329 track->SetName(form);
330 track->SetStdTitle();
331 set_track_color(track, pdg_col);
334 gEve->AddElement(track, cont);
338 if (import_daughters && p->GetNDaughters())
340 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
342 TParticle* dp = stack->Particle(d);
343 AliEveTrack* track = new AliEveTrack(dp, d, rs);
345 sprintf(form,"%s [%d]", dp->GetName(), d);
346 track->SetName(form);
347 track->SetStdTitle();
348 set_track_color(track, pdg_col);
351 gEve->AddElement(track, cont);
354 kine_daughters(track, stack, 0, 0, pdg_col, recurse);
363 //==============================================================================
365 void kine_hide_neutrals(TEveElement* el, Int_t level)
369 el = gEve->GetCurrentEvent()->FindChild("Kine Tracks");
374 TEveTrack* t = dynamic_cast<TEveTrack*>(el);
375 if (t && t->GetCharge() == 0)
376 t->SetRnrSelf(kFALSE);
378 for (TEveElement::List_i i = el->BeginChildren(); i != el->EndChildren(); ++i)
380 kine_hide_neutrals(*i, level + 1);