1 #ifndef ALITRDTRACKLETWORD_H
2 #define ALITRDTRACKLETWORD_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 /* $Id: AliTRDtrackletWord.h 27496 2008-07-22 08:35:45Z cblume $ */
8 //-----------------------------------
10 // TRD tracklet word (as from FEE)
11 // only 32-bit of information + detector ID
13 //----------------------------------
15 #include "AliTRDtrackletBase.h"
16 #include "AliTRDgeometry.h"
17 #include "AliTRDpadPlane.h"
19 class AliTRDtrackletWord : public AliTRDtrackletBase {
21 AliTRDtrackletWord(UInt_t trackletWord = 0);
22 AliTRDtrackletWord(UInt_t trackletWord, Int_t hcid);
23 AliTRDtrackletWord(const AliTRDtrackletWord &rhs);
24 ~AliTRDtrackletWord();
26 // ----- Getters for contents of tracklet word -----
27 Int_t GetYbin() const;
29 Int_t GetZbin() const { return ((fTrackletWord >> 20) & 0xf); }
30 Int_t GetPID() const { return ((fTrackletWord >> 24) & 0xff); }
35 // ----- Getters for offline corresponding values -----
36 Bool_t CookPID() { return kFALSE; }
37 Double_t GetPID(Int_t /* is */) const { return (Double_t) GetPID()/256.; }
38 Int_t GetDetector() const { return fHCId / 2; }
39 Int_t GetHCId() const { return fHCId; }
40 Float_t GetdYdX() const { return (GetdY() * 140e-4 / 3.); }
41 Float_t GetX() const { return fgGeo->GetTime0((fHCId%12)/2); }
42 Float_t GetY() const { return (GetYbin() * 160e-4); }
43 Float_t GetZ() const { return fgGeo->GetPadPlane((fHCId % 12) / 2, (fHCId/12) % 5)->GetRowPos(GetZbin()) -
44 fgGeo->GetPadPlane((fHCId % 12) / 2, (fHCId/12) % 5)->GetRowSize(GetZbin()) * .5; }
45 Float_t GetLocalZ() const { return GetZ() - fgGeo->GetPadPlane((fHCId % 12) / 2, (fHCId/12) % 5)->GetRowPos((((fHCId/12) % 5) != 2) ? 8 : 6); }
47 UInt_t GetTrackletWord() const { return fTrackletWord; }
48 void SetTrackletWord(UInt_t trackletWord) { fTrackletWord = trackletWord; }
50 void SetDetector(Int_t id) { fHCId = 2 * id + (GetYbin() < 0 ? 0 : 1); }
51 void SetHCId(Int_t id) { fHCId = id; }
54 Int_t fHCId; // half-chamber ID
55 UInt_t fTrackletWord; // tracklet word: PID | Z | deflection length | Y
57 static AliTRDgeometry *fgGeo; // pointer to TRD geometry for coordinate calculations
60 AliTRDtrackletWord& operator=(const AliTRDtrackletWord &rhs); // not implemented
62 ClassDef(AliTRDtrackletWord, 2);