Add Jochens GTU simulation code

[u/mrichter/AliRoot.git] / TRD / AliTRDtrackletWord.h

diff --git a/TRD/AliTRDtrackletWord.h b/TRD/AliTRDtrackletWord.h
new file mode 100644 (file)
index 0000000..6bb5f01
--- /dev/null
+++ b/TRD/AliTRDtrackletWord.h
@@ -0,0 +1,54 @@
+#ifndef ALITRDTRACKLETWORD_H
+#define ALITRDTRACKLETWORD_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice                               */
+
+/* $Id: AliTRDtrackletWord.h 27496 2008-07-22 08:35:45Z cblume $ */
+
+//-----------------------------------
+//
+// TRD tracklet word (as from FEE)
+// only 32-bit of information + detector ID
+//
+//----------------------------------
+
+#include "AliTRDtrackletBase.h"
+
+class AliTRDtrackletWord : public AliTRDtrackletBase {
+ public:
+  AliTRDtrackletWord(UInt_t tracklet_word = 0);
+  AliTRDtrackletWord(UInt_t tracklet_word, Int_t hcid);
+  AliTRDtrackletWord(const AliTRDtrackletWord &rhs);
+  ~AliTRDtrackletWord();
+
+  // ----- Getters for contents of tracklet word -----
+  Int_t GetYbin() const; 
+  Int_t GetdY() const; 
+  Int_t GetZbin() const { return ((fTrackletWord >> 20) & 0xf); }
+  Int_t GetPID() const { return ((fTrackletWord >> 24) & 0xff); }
+
+  // ----- Getters for offline corresponding values -----
+  Bool_t CookPID() { return kFALSE; }
+  Double_t GetPID(Int_t /* is */) const { return 0; }
+  Int_t GetDetector() const { return fHCId / 2; }
+  Int_t GetHCId() const { return fHCId; }
+  Float_t GetdYdX() const { return (GetdY() * 140e-4 / 3.); }
+  Float_t GetX() const { return 0; }
+  Float_t GetY() const { return (GetYbin() * 160e-4); }
+  Float_t GetZ() const { return 0; }
+
+  UInt_t GetTrackletWord() const { return fTrackletWord; }
+  void SetTrackletWord(UInt_t trackletWord) { fTrackletWord = trackletWord; }
+
+  void SetDetector(Int_t id) { fHCId = 2 * id + (GetYbin() < 0 ? 0 : 1); }
+  void SetHCId(Int_t id) { fHCId = id; }
+
+ protected:
+  Int_t fHCId;                  //! half-chamber ID (only transient)
+  UInt_t fTrackletWord;                // tracklet word: PID | Z | deflection length | Y 
+                               //          bits:  12   4            7          13
+
+  ClassDef(AliTRDtrackletWord, 1);
+};
+
+#endif