MUON/mapping/AliMpSectorAreaHPadIterator.cxx

   1 // $Id$
   2 // Category: sector
   3 //
   4 // Class AliMpSectorAreaHPadIterator
   5 // ---------------------------------
   6 // Class, which defines an iterator over the pads
   7 // inside a given area in a sector in horizontal direction.
   8 //
   9 // Authors: David Guez, Ivana Hrivnacova; IPN Orsay
  10
  11 #include <Riostream.h>
  12
  13 #include "AliMpSectorAreaHPadIterator.h"
  14 #include "AliMpSectorSegmentation.h"
  15 #include "AliMpConstants.h"
  16
  17 ClassImp(AliMpSectorAreaHPadIterator)
  18
  19 //______________________________________________________________________________
  20 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator(
  21                                 const AliMpSectorSegmentation* segmentation,
  22                                 const AliMpArea& area)
  23  : AliMpVPadIterator(),
  24    fkSegmentation(segmentation),
  25    fkArea(area),
  26    fCurrentPad(AliMpPad::Invalid()),
  27    fCurrentRowPosition(0.)
  28 {
  29 // normal constructor, start in invalid position
  30 }
  31
  32 //______________________________________________________________________________
  33 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator(
  34                                 const AliMpSectorAreaHPadIterator& right)
  35   : AliMpVPadIterator(right)
  36 {
  37 // copy constructor
  38
  39   Fatal("Copy constructor", "Not implemented");
  40 }
  41
  42 //______________________________________________________________________________
  43 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator()
  44  : AliMpVPadIterator(),
  45    fkSegmentation(0),
  46    fkArea(AliMpArea()),
  47    fCurrentPad(AliMpPad::Invalid()),
  48    fCurrentRowPosition(0.)
  49 {
  50 // Dummy default constructor.
  51 }
  52
  53 //______________________________________________________________________________
  54 AliMpSectorAreaHPadIterator::~AliMpSectorAreaHPadIterator()
  55 {
  56 // destructor
  57 }
  58
  59 //
  60 // operators
  61 //
  62
  63 //______________________________________________________________________________
  64 AliMpSectorAreaHPadIterator&
  65 AliMpSectorAreaHPadIterator::operator = (const AliMpSectorAreaHPadIterator& right)
  66 {
  67 // Assignement operator
  68
  69   // check assignement to self
  70   if (this == &right) return *this;
  71
  72   // base class assignement
  73   AliMpVPadIterator::operator=(right);
  74
  75   fkSegmentation = right.fkSegmentation;
  76   fkArea         = right.fkArea;
  77   fCurrentPad    = right.fCurrentPad;
  78   fCurrentRowPosition = right.fCurrentRowPosition;
  79
  80   return *this;
  81 }
  82
  83 //
  84 // private methods
  85 //
  86
  87 //______________________________________________________________________________
  88 Bool_t AliMpSectorAreaHPadIterator::IsValid() const
  89 {
  90 // Is the iterator in a valid position?
  91 // ---
  92
  93   return fCurrentPad.IsValid() ;
  94 }
  95
  96 //______________________________________________________________________________
  97 void AliMpSectorAreaHPadIterator::MoveUp()
  98 {
  99 // Increase the current row position and searches the first valid pad.
 100 // ---
 101
 102   Double_t step = 2.* fkSegmentation->GetMinPadDimensions().Y();
 103
 104   while ( !fCurrentPad.IsValid() &&
 105           fCurrentRowPosition + step < fkArea.UpBorder())
 106   {
 107     //cout << "#########  Move up ##########" << endl;
 108
 109     fCurrentRowPosition += step;
 110     TVector2 position = TVector2(fkArea.LeftBorder(), fCurrentRowPosition);
 111
 112     fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
 113   }
 114 }
 115
 116 //
 117 // public methods
 118 //
 119
 120 //______________________________________________________________________________
 121 void AliMpSectorAreaHPadIterator::First()
 122 {
 123 // Reset the iterator, so that it points to the first available
 124 // pad in the area
 125 // ---
 126
 127   if (!fkSegmentation) {
 128     Fatal("First", "Segmentation is not defined");
 129     return;
 130   }
 131
 132   // Start position = left down corner of the area
 133   //
 134   fCurrentRowPosition = fkArea.DownBorder();
 135   TVector2 position(fkArea.LeftDownCorner());
 136
 137   fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
 138
 139   MoveUp();
 140
 141   // Set the row position to the center of pad
 142   //
 143   if (fCurrentPad.IsValid()) fCurrentRowPosition = fCurrentPad.Position().Y();
 144 }
 145
 146 //______________________________________________________________________________
 147 void AliMpSectorAreaHPadIterator::Next()
 148 {
 149 // Move the iterator to the next valid pad.
 150 // ---
 151
 152   if (!IsValid()) return;
 153
 154   // Start position = right board of current pad + little step
 155   //
 156   TVector2 position
 157     = fCurrentPad.Position()
 158     + TVector2(fCurrentPad.Dimensions().X() + AliMpConstants::LengthStep(), 0.);
 159
 160   fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
 161
 162   if (fCurrentPad.IsValid()) return;
 163
 164   MoveUp();
 165 }
 166
 167 //______________________________________________________________________________
 168 Bool_t AliMpSectorAreaHPadIterator::IsDone() const
 169 {
 170 //
 171   return !IsValid();
 172 }
 173
 174 //______________________________________________________________________________
 175 AliMpPad AliMpSectorAreaHPadIterator::CurrentItem () const
 176 {
 177 // Returns current pad.
 178 // ---
 179
 180   return fCurrentPad;
 181 }
 182 //______________________________________________________________________________
 183 void AliMpSectorAreaHPadIterator::Invalidate()
 184 {
 185 //
 186   fCurrentPad = AliMpPad::Invalid();
 187   fCurrentRowPosition = 0;
 188 }
 189
 190
 191