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 #include <TEveManager.h>
14 #include <TEveTrackPropagator.h>
16 #include <EveBase/AliEveEventManager.h>
17 #include <EveBase/AliEveMagField.h>
18 #include <EveBase/AliEveTrack.h>
19 #include <EveBase/AliEveKineTools.h>
21 #include <AliRunLoader.h>
25 #include "TParticlePDG.h"
27 // Use magnetic-field as retrieved from GRP.
28 Bool_t g_kine_tracks_true_field = kTRUE;
30 // Use Runge-Kutta track stepper.
31 Bool_t g_kine_tracks_rk_stepper = kFALSE;
33 //==============================================================================
35 void kine_track_propagator_setup(TEveTrackPropagator* trkProp);
38 kine_tracks(Double_t min_pt = 0, Double_t min_p = 0,
39 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
40 Bool_t use_track_refs = kTRUE);
42 void kine_daughters(AliEveTrack* parent, AliStack* stack,
43 Double_t min_pt, Double_t min_p,
44 Bool_t pdg_col, Bool_t recurse);
46 void set_track_color(AliEveTrack* t, Bool_t pdg_col);
47 Color_t get_pdg_color(Int_t pdg);
50 kine_track(Int_t label,
51 Bool_t import_mother = kTRUE, Bool_t import_daughters = kTRUE,
52 Bool_t pdg_col = kTRUE, Bool_t recurse = kTRUE,
53 TEveElement* cont = 0);
55 void kine_hide_neutrals(TEveElement* el=0, Int_t level=0);
57 //==============================================================================
59 void kine_track_propagator_setup(TEveTrackPropagator* trkProp)
61 AliMagF* fld = AliEveEventManager::AssertMagField();
63 if (g_kine_tracks_true_field)
65 trkProp->SetMagFieldObj(new AliEveMagField(fld));
69 trkProp->SetMagField(-0.1*fld->SolenoidField());
71 if (g_kine_tracks_rk_stepper)
73 trkProp->SetStepper(TEveTrackPropagator::kRungeKutta);
77 //==============================================================================
80 kine_tracks(Double_t min_pt, Double_t min_p,
81 Bool_t pdg_col, Bool_t recurse,
82 Bool_t use_track_refs)
84 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
86 AliStack* stack = rl->Stack();
89 Error("kine_tracks.C", "can not get kinematics.");
93 gEve->DisableRedraw();
95 TEveTrackList* cont = new TEveTrackList("Kine Tracks");
96 cont->SetMainColor(3);
97 TEveTrackPropagator* trkProp = cont->GetPropagator();
99 kine_track_propagator_setup(trkProp);
101 gEve->AddElement(cont);
103 Int_t Np = stack->GetNprimary();
104 for (Int_t i = 0; i < Np; ++i)
106 TParticle* p = stack->Particle(i);
107 if (p->GetStatusCode() <= 1)
109 if (p->Pt() < min_pt && p->P() < min_p) continue;
112 AliEveTrack* track = new AliEveTrack(p, i, trkProp);
114 //PH The line below is replaced waiting for a fix in Root
115 //PH which permits to use variable siza arguments in CINT
116 //PH on some platforms (alphalinuxgcc, solariscc5, etc.)
117 //PH track->SetName(Form("%s [%d]", p->GetName(), i));
119 sprintf(form,"%s [%d]", p->GetName(), i);
120 track->SetName(form);
121 track->SetStdTitle();
122 Int_t ml = p->GetMother(0);
125 track->SetTitle(Form("%s\nMother label=%d\nMother Pdg=%d",
126 track->GetElementTitle(),
127 ml, stack->Particle(ml)->GetPdgCode()));
129 set_track_color(track, pdg_col);
131 gEve->AddElement(track, cont);
134 kine_daughters(track, stack, min_pt, min_p, pdg_col, recurse);
140 kt.SetDaughterPathMarks(cont, stack, recurse);
141 if (use_track_refs && rl->LoadTrackRefs() == 0)
143 kt.SetTrackReferences(cont, rl->TreeTR(), recurse);
144 trkProp->SetEditPathMarks(kTRUE);
146 kt.SortPathMarks(cont, recurse);
148 //PH const Text_t* tooltip = Form("min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
150 sprintf(tooltip,"min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
151 cont->SetTitle(tooltip); // Not broadcasted automatically ...
153 cont->MakeTracks(recurse);
154 gEve->EnableRedraw();
160 void kine_daughters(AliEveTrack* parent, AliStack* stack,
161 Double_t min_pt, Double_t min_p,
162 Bool_t pdg_col, Bool_t recurse)
164 TParticle *p = stack->Particle(parent->GetLabel());
165 if (p->GetNDaughters() > 0)
167 TEveTrackPropagator* rs = parent->GetPropagator();
168 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
170 TParticle* dp = stack->Particle(d);
171 if (dp->Pt() < min_pt && dp->P() < min_p) continue;
173 AliEveTrack* dtrack = new AliEveTrack(dp, d, rs);
175 sprintf(form,"%s [%d]", dp->GetName(), d);
176 dtrack->SetName(form);
177 dtrack->SetStdTitle();
178 set_track_color(dtrack, pdg_col);
180 gEve->AddElement(dtrack, parent);
183 kine_daughters(dtrack, stack, min_pt, min_p, pdg_col, recurse);
188 //==============================================================================
190 void set_track_color(AliEveTrack* t, Bool_t pdg_col)
193 t->SetMainColor(get_pdg_color(t->GetPdg()));
198 Color_t get_pdg_color(Int_t pdg)
201 static const Color_t DefCol = 30;
202 static const Color_t ECol = 5;
203 static const Color_t MuCol = 6;
204 static const Color_t GammaCol = 7;
205 static const Color_t MesCol1 = 3;
206 static const Color_t MesCol2 = 38;
207 static const Color_t BarCol = 10;
209 Int_t pdga = TMath::Abs(pdg);
210 Color_t col = DefCol;
212 // elementary particles
220 col = GammaCol; break;
223 // mesons and barions
224 else if (pdga < 100000) {
226 // Int_t i0 = i%10; // Not used at the moment.
228 Int_t i1 = i%10; i /= 10;
229 Int_t i2 = i%10; i /= 10;
230 Int_t i3 = i%10; i /= 10;
232 //printf("pdg(%d) quark indices (%d,%d,%d,%d,%d) \n",pdg, i4,i3,i2, i1, i0);
234 if ((i3 == 0) && ( i4 < 2)){
235 col = MesCol1; // quarks: i1,i2 (spin = i0)
236 if(i1 == 3 || i2 == 3)
239 else if ( i2 >= i1 && i3 >= i2 ) {
240 col = BarCol; // quarks: i1,i2, i3 (spin = i0))
247 //==============================================================================
250 kine_track(Int_t label,
251 Bool_t import_mother, Bool_t import_daughters,
252 Bool_t pdg_col, Bool_t recurse,
255 // Create mother and daughters tracks with given label.
256 // mother -> particle with label
257 // daughters -> daughters of label
260 Warning("kine_track", "label not set.");
264 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
265 rl->LoadKinematics();
266 AliStack* stack = rl->Stack();
267 if (label >= stack->GetNtrack())
269 Warning("kine_track", "label out of range.");
273 TParticle* p = stack->Particle(label);
275 if (import_mother || (import_daughters && p->GetNDaughters()))
277 TEveTrackPropagator* rs = 0;
281 TEveTrackList* tlist = new TEveTrackList
282 (Form("Kinematics of %d", label, p->GetNDaughters()));
285 TEveTrackPropagator* trkProp = tlist->GetPropagator();
287 kine_track_propagator_setup(trkProp);
290 sprintf(tooltip,"Ndaughters=%d", p->GetNDaughters());
291 tlist->SetTitle(tooltip);
292 trkProp->fMaxOrbs = 2;
293 trkProp->SetEditPathMarks(kTRUE);
295 gEve->AddElement(cont);
296 rs = tlist->GetPropagator();
300 // check if container is TEveTrackList or AliEveTrack (has rnr-style)
301 AliEveTrack* t = dynamic_cast<AliEveTrack*>(cont);
303 rs = t->GetPropagator();
305 TEveTrackList* l = dynamic_cast<TEveTrackList*>(cont);
307 rs = l->GetPropagator();
309 Error("kine_tracks.C", "TrackRenderStyle not set.");
315 AliEveTrack* track = new AliEveTrack(p, label, rs);
317 sprintf(form,"%s [%d]", p->GetName(), label);
318 track->SetName(form);
319 track->SetStdTitle();
320 set_track_color(track, pdg_col);
323 gEve->AddElement(track, cont);
327 if (import_daughters && p->GetNDaughters())
329 for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
331 TParticle* dp = stack->Particle(d);
332 AliEveTrack* track = new AliEveTrack(dp, d, rs);
334 sprintf(form,"%s [%d]", dp->GetName(), d);
335 track->SetName(form);
336 track->SetStdTitle();
337 set_track_color(track, pdg_col);
340 gEve->AddElement(track, cont);
343 kine_daughters(track, stack, 0, 0, pdg_col, recurse);
352 //==============================================================================
354 void kine_hide_neutrals(TEveElement* el, Int_t level)
358 el = gEve->GetCurrentEvent()->FindChild("Kine Tracks");
363 TEveTrack* t = dynamic_cast<TEveTrack*>(el);
364 if (t && t->GetCharge() == 0)
365 t->SetRnrSelf(kFALSE);
367 for (TEveElement::List_i i = el->BeginChildren(); i != el->EndChildren(); ++i)
369 kine_hide_neutrals(*i, level + 1);