MUON/AliMUONDataDigitIterator.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-1999, 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
  16 // $Id$
  17
  18 #include "AliMUONDataDigitIterator.h"
  19
  20 #include "AliMUONData.h"
  21 #include "TClonesArray.h"
  22
  23 ///
  24 /// \class AliMUONDataDigitIterator
  25 ///
  26 /// An iterator to access digits (stored into AliMUONData).
  27 ///
  28 /// Iteration can occur on tracking chambers only, trigger chambers only,
  29 /// or both.
  30 ///
  31 /// \author L. Aphecetche
  32 ///
  33
  34 //_____________________________________________________________________________
  35 AliMUONDataDigitIterator::AliMUONDataDigitIterator(const AliMUONData* data,
  36                                                    Int_t firstChamber,
  37                                                    Int_t lastChamber)
  38 :
  39 AliMUONVDataIterator(),
  40 fData(data),
  41 fFirstChamber(firstChamber),
  42 fLastChamber(lastChamber)
  43 {
  44   //
  45   // Ctor
  46   //
  47   Reset();
  48 }
  49
  50 //_____________________________________________________________________________
  51 AliMUONDataDigitIterator::AliMUONDataDigitIterator(const AliMUONDataDigitIterator& rhs)
  52 :
  53 AliMUONVDataIterator()
  54 {
  55   rhs.CopyTo(*this);
  56 }
  57
  58 //_____________________________________________________________________________
  59 AliMUONDataDigitIterator&
  60 AliMUONDataDigitIterator::operator=(const AliMUONDataDigitIterator& rhs)
  61 {
  62   rhs.CopyTo(*this);
  63   return *this;
  64 }
  65
  66 //_____________________________________________________________________________
  67 void
  68 AliMUONDataDigitIterator::CopyTo(AliMUONDataDigitIterator& destination) const
  69 {
  70   // Copy *this to destination
  71   destination.fData=fData;
  72   destination.fFirstChamber=fFirstChamber;
  73   destination.fLastChamber=fLastChamber;
  74   destination.fCurrentDigit=fCurrentDigit;
  75   destination.fCurrentChamber=fCurrentChamber;
  76   destination.fDigits=fDigits;
  77 }
  78
  79 //_____________________________________________________________________________
  80 TObject*
  81 AliMUONDataDigitIterator::Next()
  82 {
  83   // Return current element and self-position to the next one.
  84
  85   TObject* rv(0x0);
  86
  87   if ( fDigits )
  88   {
  89     // get the pointer to be returned
  90     rv = fDigits->At(fCurrentDigit);
  91     // prepare for the next position, if it exists
  92     if ( fCurrentDigit < fDigits->GetLast() )
  93     {
  94       ++fCurrentDigit;
  95     }
  96     else
  97     {
  98       fCurrentDigit = 0;
  99       ++fCurrentChamber;
 100       if ( fCurrentChamber <= fLastChamber )
 101       {
 102         fDigits = fData->Digits(fCurrentChamber);
 103       }
 104       else
 105       {
 106         fDigits = 0x0;
 107       }
 108     }
 109   }
 110
 111   return rv;
 112 }
 113
 114 //_____________________________________________________________________________
 115 Bool_t
 116 AliMUONDataDigitIterator::Remove()
 117 {
 118   // Remove current element.
 119
 120   if ( fDigits )
 121   {
 122     fDigits->RemoveAt(fCurrentDigit);
 123     fDigits->Compress();
 124     return kTRUE;
 125   }
 126
 127   return kFALSE;
 128 }
 129
 130 //_____________________________________________________________________________
 131 void
 132 AliMUONDataDigitIterator::Reset()
 133 {
 134   // Resets the iterator
 135   fData->GetDigits();
 136   fCurrentDigit = 0;
 137   fCurrentChamber = fFirstChamber;
 138   fDigits = fData->Digits(fCurrentChamber);
 139 }