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d810d0de | 1 | // $Id$ |
2 | // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007 | |
3 | ||
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 | **************************************************************************/ | |
c46fd838 | 9 | // To use when per-line id is supported |
10 | class TrackletId : public TObject | |
11 | { | |
12 | public: | |
13 | // label, phi, theta | |
14 | // virtual void Print(const Option_t* opt="") {} | |
15 | }; | |
16 | ||
84aff7a4 | 17 | TEveStraightLineSet* esd_spd_tracklets(Float_t rad=8) |
c46fd838 | 18 | { |
d810d0de | 19 | AliESDEvent * esd = AliEveEventManager::AssertESD(); |
c46fd838 | 20 | AliESDVertex * pv = esd->GetPrimaryVertex(); |
21 | AliMultiplicity* mul = esd->GetMultiplicity(); | |
22 | ||
23 | Double_t pvx[3], pve[3]; | |
24 | pv->GetXYZ(pvx); | |
25 | pv->GetSigmaXYZ(pve); | |
26 | ||
84aff7a4 | 27 | TEveStraightLineSet* ls = new TEveStraightLineSet(); |
c46fd838 | 28 | |
29 | for (Int_t i=0; i<mul->GetNumberOfTracklets(); ++i) | |
30 | { | |
31 | using namespace TMath; | |
32 | Float_t dr[3]; | |
723492dc | 33 | Float_t phi = PiOver2() - mul->GetPhi(i); // strange people |
34 | dr[0] = rad*Cos(phi); | |
35 | dr[1] = rad*Sin(phi); | |
c46fd838 | 36 | dr[2] = rad/Tan(mul->GetTheta(i)); |
37 | ls->AddLine(pvx[0], pvx[1], pvx[2], | |
38 | pvx[0]+dr[0], pvx[1]+dr[1], pvx[2]+dr[2]); | |
39 | } | |
40 | ||
84aff7a4 | 41 | gEve->AddElement(ls); |
42 | gEve->Redraw3D(); | |
c46fd838 | 43 | |
44 | return ls; | |
45 | } |