1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //_________________________________________________________________________
19 // A Particle modified by PHOS response and produced by AliPHOSvFast
20 // To become a general class of AliRoot ?
22 // This is also a base class for AliPHOSRecParticle produced by AliPHOSPIDv1
23 // The rec.particle type is to be defined by AliPHOSvFast or AliPHOSPIDv1
25 //*-- Author: Yves Schutz (SUBATECH)
27 // --- ROOT system ---
29 // --- Standard library ---
31 // --- AliRoot header files ---
33 #include "AliPHOSFastRecParticle.h"
35 #include "TPaveText.h"
37 ClassImp(AliPHOSFastRecParticle) ;
39 //____________________________________________________________________________
40 AliPHOSFastRecParticle::AliPHOSFastRecParticle() : TParticle()
46 //____________________________________________________________________________
47 AliPHOSFastRecParticle::AliPHOSFastRecParticle(const AliPHOSFastRecParticle & rp)
52 fPdgCode = rp.fPdgCode;
53 fStatusCode = rp.fStatusCode;
54 fMother[0] = rp.fMother[0];
55 fMother[1] = rp.fMother[1];
56 fDaughter[0] = rp.fDaughter[0];
57 fDaughter[1] = rp.fDaughter[1];
59 fCalcMass = rp.fCalcMass;
68 fPolarTheta = rp.fPolarTheta;
69 fPolarPhi = rp.fPolarPhi;
70 fParticlePDG = rp.fParticlePDG;
73 //____________________________________________________________________________
74 AliPHOSFastRecParticle::AliPHOSFastRecParticle(const TParticle & pp)
76 // ctor from a TParticle (crummy?!)
78 TParticle & pnoconst = (TParticle &)(pp) ;
79 AliPHOSFastRecParticle & p = (AliPHOSFastRecParticle &)(pnoconst) ;
81 fPdgCode = p.fPdgCode;
82 fStatusCode = p.fStatusCode;
83 fMother[0] = p.fMother[0];
84 fMother[1] = p.fMother[1];
85 fDaughter[0] = p.fDaughter[0];
86 fDaughter[1] = p.fDaughter[1];
88 fCalcMass = p.fCalcMass;
97 fPolarTheta = p.fPolarTheta;
98 fPolarPhi = p.fPolarPhi;
99 fParticlePDG = p.fParticlePDG;
103 //____________________________________________________________________________
104 Int_t AliPHOSFastRecParticle::DistancetoPrimitive(Int_t px, Int_t py)
106 // Compute distance from point px,py to a AliPHOSFastRecParticle considered as a Tmarker
107 // Compute the closest distance of approach from point px,py to this marker.
108 // The distance is computed in pixels units.
110 Double_t kRADDEG = 180. / TMath::Pi() ;
111 Coord_t x = Phi() * kRADDEG ;
112 Coord_t y = Theta() * kRADDEG ;
113 const Int_t kMaxDiff = 10;
114 Int_t pxm = gPad->XtoAbsPixel(x);
115 Int_t pym = gPad->YtoAbsPixel(y);
116 Int_t dist = (px-pxm)*(px-pxm) + (py-pym)*(py-pym);
118 if (dist > kMaxDiff) return 9999;
122 //___________________________________________________________________________
123 void AliPHOSFastRecParticle::Draw(Option_t *option)
125 // Draw this AliPHOSFastRecParticle with its current attributes
130 //______________________________________________________________________________
131 void AliPHOSFastRecParticle::ExecuteEvent(Int_t event, Int_t px, Int_t py)
133 // Execute action corresponding to one event
134 // This member function is called when a AliPHOSFastRecParticle is clicked with the locator
136 if (!gPad->IsEditable())
139 static TPaveText * clustertext = 0 ;
144 Double_t kRADDEG = 180. / TMath::Pi() ;
145 Coord_t x = Phi() * kRADDEG ;
146 Coord_t y = Theta() * kRADDEG ;
147 clustertext = new TPaveText(x-1, y+1, x+5, y+3, "") ;
150 sprintf( line1, "PID: %s ", (const char*)Name() ) ;
151 sprintf( line2, "ENERGY: %f ", Energy() ) ;
152 clustertext ->AddText(line1) ;
153 clustertext ->AddText(line2) ;
154 clustertext ->Draw("");
169 //____________________________________________________________________________
170 Bool_t AliPHOSFastRecParticle::IsPhoton(TString purity) const
172 // Rec.Particle is a photon if it has a photon-like shape, fast and neutral
173 // photon-like shape is defined with a purity "low", "medium" or "high"
176 Bool_t photonLike = kFALSE;
177 if (purity == "low" ) photonLike = TestPIDBit(6);
178 else if (purity == "medium") photonLike = TestPIDBit(7);
179 else if (purity == "high" ) photonLike = TestPIDBit(8);
180 else Error("IsPhoton","Wrong purity type: \'%s\'",purity.Data());
181 if (photonLike && // photon by PCA
182 (TestPIDBit(5)||TestPIDBit(4)||TestPIDBit(3))&& // fast by TOF
183 (TestPIDBit(2)||TestPIDBit(1)||TestPIDBit(0))) // neutral by CPV
189 //____________________________________________________________________________
190 Bool_t AliPHOSFastRecParticle::IsPi0(TString purity) const
192 // Rec.Particle is a pi0 if it has a pi0-like shape, fast and neutral
193 // pi0-like shape is defined with a purity "low", "medium" or "high"
196 Bool_t pi0Like = kFALSE;
197 if (purity == "low" ) pi0Like = TestPIDBit(9);
198 else if (purity == "medium") pi0Like = TestPIDBit(10);
199 else if (purity == "high" ) pi0Like = TestPIDBit(11);
200 else Error("IsPi0","Wrong purity type: %s",purity.Data());
201 if (pi0Like && // pi0 by PCA
202 (TestPIDBit(5)||TestPIDBit(4)||TestPIDBit(3))&& // fast by TOF
203 (TestPIDBit(2)||TestPIDBit(1)||TestPIDBit(0))) // neutral by CPV
209 //____________________________________________________________________________
210 Bool_t AliPHOSFastRecParticle::IsElectron(TString purity) const
212 // Rec.Particle is an electron if it has a photon-like shape, fast and charged
213 // photon-like shape is defined with a purity "low", "medium" or "high"
216 Bool_t photonLike = kFALSE;
217 if (purity == "low" ) photonLike = TestPIDBit(6);
218 else if (purity == "medium") photonLike = TestPIDBit(7);
219 else if (purity == "high" ) photonLike = TestPIDBit(8);
220 else Error("IsElectron","Wrong purity type: %s",purity.Data());
221 if (photonLike && // photon by PCA
222 (TestPIDBit(5)||TestPIDBit(4)||TestPIDBit(3))&& // fast by TOF
223 !(TestPIDBit(2)||TestPIDBit(1)||TestPIDBit(0))) // charged by CPV
229 //____________________________________________________________________________
230 Bool_t AliPHOSFastRecParticle::IsHardPhoton() const
232 // Rec.Particle is a hard photon (E > 30 GeV) if its second moment M2x
233 // corresponds to photons
240 //____________________________________________________________________________
241 Bool_t AliPHOSFastRecParticle::IsHardPi0() const
243 // Rec.Particle is a hard pi0 (E > 30 GeV) if its second moment M2x
244 // corresponds to pi0
251 //____________________________________________________________________________
252 Bool_t AliPHOSFastRecParticle::IsHadron() const
254 // Rec.Particle is an hadron if it does not look like
255 // a low-purity photon nor low-purity pi0
257 if ( !TestPIDBit(6) && !TestPIDBit(9) ) // not photon nor pi0
263 //____________________________________________________________________________
264 Bool_t AliPHOSFastRecParticle::IsChargedHadron() const
266 // Rec.Particle is a charged hadron if it does not look like
267 // a low-purity photon nor low-purity pi0 and is low-purity charged
269 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
270 !TestPIDBit(2)) // charged by CPV
276 //____________________________________________________________________________
277 Bool_t AliPHOSFastRecParticle::IsNeutralHadron() const
279 // Rec.Particle is a neutral hadron if it does not look like
280 // a low-purity photon nor low-purity pi0 and is high-purity neutral
282 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
283 TestPIDBit(2)) // neutral by CPV
289 //____________________________________________________________________________
290 Bool_t AliPHOSFastRecParticle::IsFastChargedHadron() const
292 // Rec.Particle is a fast charged hadron if it does not look like
293 // a low-purity photon nor low-purity pi0, is low-purity charged
294 // and is high-purity fast
296 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
297 !TestPIDBit(2) && // charged by CPV
298 TestPIDBit(5)) // fast by TOF
304 //____________________________________________________________________________
305 Bool_t AliPHOSFastRecParticle::IsSlowChargedHadron() const
307 // Rec.Particle is a slow neutral hadron if it does not look like
308 // a low-purity photon nor low-purity pi0, is high-purity neutral
309 // and is not high-purity fast
311 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
312 !TestPIDBit(2) && // charged by CPV
313 !TestPIDBit(5)) // slow by TOF
320 //____________________________________________________________________________
321 Bool_t AliPHOSFastRecParticle::IsFastNeutralHadron() const
323 // Rec.Particle is a fast neutral hadron if it does not look like
324 // a low-purity photon nor low-purity pi0, is high-purity neutral
325 // and is high-purity fast
327 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
328 TestPIDBit(2) && // neutral by CPV
329 TestPIDBit(5)) // fast by TOF
335 //____________________________________________________________________________
336 Bool_t AliPHOSFastRecParticle::IsSlowNeutralHadron() const
338 // Rec.Particle is a slow neutral hadron if it does not look like
339 // a low-purity photon nor low-purity pi0, is high-purity neutral
340 // and is not high-purity fast
342 if ( !TestPIDBit(6) && !TestPIDBit(9) && // not photon nor pi0
343 TestPIDBit(2) && // neutral by CPV
344 !TestPIDBit(5)) // slow by TOF
350 //____________________________________________________________________________
351 TString AliPHOSFastRecParticle::Name() const
353 // Returns the name of the particle type (only valid if PIDv1 is employed)
357 name = "Undefined particle" ;
360 name = "Photon low purity ";
361 else if (IsPhoton("medium"))
362 name = "Photon medium purity";
363 else if (IsPhoton("high"))
364 name = "Photon high purity ";
367 name += "Pi0 low purity ";
368 else if (IsPi0("medium"))
369 name += "Pi0 medium purity ";
370 else if (IsPi0("high"))
371 name += "Pi0 high purity ";
373 if (IsElectron("low"))
374 name += "Electron low purity ";
375 else if (IsElectron("medium"))
376 name += "Electron medium purity ";
377 else if (IsElectron("high"))
378 name += "Electron high purity ";
382 if (IsChargedHadron()) {
383 name.Prepend("charged ");
384 if (IsFastChargedHadron())
385 name.Prepend("fast ");
386 else if (IsSlowChargedHadron())
387 name.Prepend("slow ");
389 else if (IsNeutralHadron()) {
390 name.Prepend("neutral ");
391 if (IsFastNeutralHadron())
392 name.Prepend("fast ");
393 else if (IsSlowNeutralHadron())
394 name.Prepend("slow ");
402 //______________________________________________________________________________
403 void AliPHOSFastRecParticle::SetType(Int_t type) {
404 // sets the particle type
405 // bit-mask of the particle type means the following:
406 // bits 0,1,2 - neutral particle with low, medium and high purity
407 // bits 3.4,5 - fast particle with low, medium and high purity
408 // bits 6.7,8 - photon shower with low, medium and high purity
409 // bits 9,10,11 - hard-pi0 shower with low, medium and high purity
413 if((type == 127) || (fType == 511) || (fType == 255) ||(fType == 383)||(fType == 447)){
418 if ((fType == 63)|| ((fType < 8)&&(fType > 0)) ){
422 if ( ((fType == 504) || (fType == 505) ||(fType == 248)||(fType == 249)||(fType == 120)||(fType == 121)) ){
426 if ((fType == 448) || (fType == 449) ||(fType == 192)||(fType == 193)||(fType == 64)||(fType == 64)){
430 if((fType == 56)||(fType == 57)){
441 //______________________________________________________________________________
442 void AliPHOSFastRecParticle::Paint(Option_t *)
444 // Paint this ALiRecParticle in theta,phi coordinate as a TMarker with its current attributes
446 Double_t kRADDEG = 180. / TMath::Pi() ;
447 Coord_t x = Phi() * kRADDEG ;
448 Coord_t y = Theta() * kRADDEG ;
449 Color_t markercolor = 1 ;
450 Size_t markersize = 1. ;
451 Style_t markerstyle = 5 ;
453 if (!gPad->IsBatch()) {
454 gVirtualX->SetMarkerColor(markercolor) ;
455 gVirtualX->SetMarkerSize (markersize) ;
456 gVirtualX->SetMarkerStyle(markerstyle) ;
458 gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
459 gPad->PaintPolyMarker(1,&x,&y,"") ;
462 //____________________________________________________________________________
463 void AliPHOSFastRecParticle::Print(Option_t * opt)const
465 // Print the type, energy and momentum of the reconstructed particle
468 message = "\n PID bits are %d%d%d %d%d%d %d%d%d %d%d%d" ;
469 message += ", type is \"%s\"\n" ;
470 message += " (E,Px,Py,Pz) = (% .3e, % .3e, % .3e, % .3e) GeV\n" ;
471 Info("Print", message.Data(),
472 TestPIDBit(0),TestPIDBit(1),
473 TestPIDBit(2),TestPIDBit(3),
474 TestPIDBit(4),TestPIDBit(5),
475 TestPIDBit(6),TestPIDBit(7),
476 TestPIDBit(8),TestPIDBit(9),
477 TestPIDBit(10),TestPIDBit(11),