Adding some protctions to CopyFromOldESD
[u/mrichter/AliRoot.git] / FMD / AliFMDBaseDigit.cxx
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02a27b50 1/**************************************************************************
2 * Copyright(c) 2004, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15/* $Id$ */
16/** @file AliFMDBaseDigit.cxx
17 @author Christian Holm Christensen <cholm@nbi.dk>
18 @date Mon Mar 27 12:37:41 2006
19 @brief Digits for the FMD
20 @ingroup FMD_base
21*/
22//////////////////////////////////////////////////////////////////////
23//
24// Digits classes for the FMD
25//
26// Digits consists of
27// - Detector #
28// - Ring ID
29// - Sector #
30// - Strip #
31// - ADC count in this channel
32//
33// Digits consists of
34// - Detector #
35// - Ring ID
36// - Sector #
37// - Strip #
38// - Total energy deposited in the strip
39// - ADC count in this channel
40//
41// As the Digits and SDigits have so much in common, the classes
42// AliFMDDigit and AliFMDSDigit are implemented via a base
43// class AliFMDBaseDigit.
44///
45// +-----------------+
46// | AliFMDBaseDigit |
47// +-----------------+
48// ^
49// |
50// +------------+
51// | |
52// +-------------+ +--------------+
53// | AliFMDDigit | | AliFMDSDigit |
54// +-------------+ +--------------+
55//
56// (Note, that I'd really would have liked to implement AliFMDHit as a
57// derived class from some base class - say AliFMDStrip, and the Digit
58// classes would (eventually) have derived from that as well.
59// However, ROOT doesn't do well with multiple inheritance, so I chose
60// not to anyway).
61//
62// Latest changes by Christian Holm Christensen
63//
64//////////////////////////////////////////////////////////////////////
65
66#include "AliFMDBaseDigit.h" // ALIFMDDIGIT_H
67#include "Riostream.h" // ROOT_Riostream
68#include <TString.h>
f95a63c4 69// #include <AliLog.h>
70#include "AliFMDDebug.h" // Better debug macros
02a27b50 71
72//====================================================================
73ClassImp(AliFMDBaseDigit)
74#if 0
75 ; // This is here to keep Emacs from indenting the next line
76#endif
77
78//____________________________________________________________________
79AliFMDBaseDigit::AliFMDBaseDigit()
80 : fDetector(0),
81 fRing('\0'),
82 fSector(0),
b5ee4425 83 fStrip(0),
84 fName("")
02a27b50 85{}
86
87//____________________________________________________________________
88AliFMDBaseDigit::AliFMDBaseDigit(UShort_t detector,
b5ee4425 89 Char_t ring,
90 UShort_t sector,
91 UShort_t strip)
02a27b50 92 : fDetector(detector),
93 fRing(ring),
94 fSector(sector),
b5ee4425 95 fStrip(strip),
96 fName("")
02a27b50 97{
98 //
99 // Creates a base data digit object
100 //
101 // Parameters
102 //
103 // detector Detector # (1, 2, or 3)
104 // ring Ring ID ('I' or 'O')
105 // sector Sector # (For inner/outer rings: 0-19/0-39)
106 // strip Strip # (For inner/outer rings: 0-511/0-255)
107}
108
109//____________________________________________________________________
110void
111AliFMDBaseDigit::Print(Option_t* /* option*/) const
112{
113 // Print digit to standard out
114 cout << ClassName() << ": FMD" << GetName() << flush;
115}
116
117//____________________________________________________________________
118const char*
119AliFMDBaseDigit::GetName() const
120{
121 // Get the name of a FMD digit.
122 if (fName.IsNull())
123 fName = Form("FMD%d%c[%2d,%3d]", fDetector, fRing, fSector, fStrip);
124 return fName.Data();
125}
126#define fMaxStrips 512
127#define fMaxSectors 40
128#define fMaxRings 2
129
130//____________________________________________________________________
131ULong_t
132AliFMDBaseDigit::Hash() const
133{
6169f936 134 // Calculate a hash value based on the detector coordinates.
02a27b50 135 size_t ringi = (fRing == 'I' || fRing == 'i' ? 0 : 1);
136 return fStrip + fMaxStrips *
137 (fSector + fMaxSectors * (ringi + fMaxRings * (fDetector - 1)));
138}
139
140
141//____________________________________________________________________
142Int_t
143AliFMDBaseDigit::Compare(const TObject* o) const
144{
6169f936 145 // Compare to other digit. If the passed pointer to TObject does
146 // not point to an object of class AliFMDBaseDigit (or one of it's
147 // derived classes), then a fatal exception is made.
148 //
149 // Returns -1, if this object's detector coordinates are smaller
150 // than passed object's detector coordinates.
151 //
152 // Returns 0, if this object's detector coordinates is the same as
153 // passed object's detector coordinates.
154 //
155 // Returns 1, if this object's detector coordinates are larger
156 // than passed object's detector coordinates.
02a27b50 157 if (!o)
158 AliFatal("Can not compare to NULL!");
159 if (o->IsA() != AliFMDBaseDigit::Class())
160 AliFatal(Form("Cannot compare to a %s object", o->ClassName()));
161 // AliFMDBaseDigit* of = static_cast<AliFMDBaseDigit*>(o);
162 if (Hash() == o->Hash()) return 0;
163 if (Hash() < o->Hash()) return -1;
164 return 1;
165}
166
167
168//____________________________________________________________________
169//
170// EOF
171//