MUON/mapping/AliMpSectorAreaVPadIterator.cxx

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   3  *                                                                        *
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  15
  16 // $Id$
  17 // $MpId: AliMpSectorAreaVPadIterator.cxx,v 1.8 2006/05/24 13:58:46 ivana Exp $
  18 // Category: sector
  19
  20 //-----------------------------------------------------------------------------
  21 // Class AliMpSectorAreaVPadIterator
  22 // ---------------------------------
  23 // Class, which defines an iterator over the pads
  24 // inside a given area in a sector in vertical direction.
  25 // Included in AliRoot: 2003/05/02
  26 // Authors: David Guez, Ivana Hrivnacova; IPN Orsay
  27 //-----------------------------------------------------------------------------
  28
  29 #include "AliMpSectorAreaVPadIterator.h"
  30 #include "AliMpSectorSegmentation.h"
  31 #include "AliMpConstants.h"
  32
  33 #include "AliLog.h"
  34
  35 #include <Riostream.h>
  36
  37 /// \cond CLASSIMP
  38 ClassImp(AliMpSectorAreaVPadIterator)
  39 /// \endcond
  40
  41 //______________________________________________________________________________
  42 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator(
  43                                 const AliMpSectorSegmentation* segmentation,
  44                                 const AliMpArea& area)
  45  : AliMpVPadIterator(),
  46    fkSegmentation(segmentation),
  47    fkArea(area),
  48    fCurrentPad(AliMpPad::Invalid()),
  49    fCurrentColumnPosition(0.)
  50 {
  51 /// Standard constructor, start in invalid position
  52 }
  53
  54 //______________________________________________________________________________
  55 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator(
  56                                 const AliMpSectorAreaVPadIterator& right)
  57   : AliMpVPadIterator(right),
  58     fkSegmentation(0),
  59     fkArea(AliMpArea()),
  60     fCurrentPad(AliMpPad::Invalid()),
  61     fCurrentColumnPosition(0.)
  62 {
  63 /// Copy constructor
  64
  65   *this = right;
  66 }
  67
  68 //______________________________________________________________________________
  69 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator()
  70  : AliMpVPadIterator(),
  71    fkSegmentation(0),
  72    fkArea(AliMpArea()),
  73    fCurrentPad(AliMpPad::Invalid()),
  74    fCurrentColumnPosition(0.)
  75 {
  76 /// Default constructor.
  77 }
  78
  79 //______________________________________________________________________________
  80 AliMpSectorAreaVPadIterator::~AliMpSectorAreaVPadIterator()
  81 {
  82 /// Destructor
  83 }
  84
  85 //
  86 // operators
  87 //
  88
  89 //______________________________________________________________________________
  90 AliMpSectorAreaVPadIterator&
  91 AliMpSectorAreaVPadIterator::operator = (const AliMpSectorAreaVPadIterator& right)
  92 {
  93 /// Assignment operator
  94
  95   // check assignment to self
  96   if (this == &right) return *this;
  97
  98   // base class assignment
  99   AliMpVPadIterator::operator=(right);
 100
 101   fkSegmentation = right.fkSegmentation;
 102   fkArea         = right.fkArea;
 103   fCurrentPad    = right.fCurrentPad;
 104   fCurrentColumnPosition = right.fCurrentColumnPosition;
 105
 106   return *this;
 107 }
 108
 109 //
 110 // private methods
 111 //
 112
 113 //______________________________________________________________________________
 114 Bool_t AliMpSectorAreaVPadIterator::IsValid() const
 115 {
 116 /// Is the iterator in a valid position?
 117
 118   return fCurrentPad.IsValid() ;
 119 }
 120
 121 //______________________________________________________________________________
 122 void AliMpSectorAreaVPadIterator::MoveRight()
 123 {
 124 /// Increase the current row position and searches the first valid pad.
 125
 126   Double_t dx = fkSegmentation->GetMinPadDimensions().X();
 127
 128   while ( !fCurrentPad.IsValid() &&
 129           fCurrentColumnPosition + dx < fkArea.RightBorder())
 130   {
 131     fCurrentColumnPosition += 2.*dx;
 132     TVector2 position = TVector2(fCurrentColumnPosition, fkArea.DownBorder());
 133
 134     fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
 135   }
 136 }
 137
 138 //
 139 // public methods
 140 //
 141
 142 //______________________________________________________________________________
 143 void AliMpSectorAreaVPadIterator::First()
 144 {
 145 /// Reset the iterator, so that it points to the first available
 146 /// pad in the area
 147
 148   if (!fkSegmentation) {
 149     AliFatal("Segmentation is not defined");
 150     return;
 151   }
 152
 153   // Start position = left down corner of the area
 154   //
 155   fCurrentColumnPosition = fkArea.LeftBorder();
 156   TVector2 position(fkArea.LeftDownCorner());
 157
 158   fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
 159
 160   MoveRight();
 161
 162   // Set the column position to the center of pad
 163   //
 164   if (fCurrentPad.IsValid()) fCurrentColumnPosition = fCurrentPad.Position().X();
 165 }
 166
 167 //______________________________________________________________________________
 168 void AliMpSectorAreaVPadIterator::Next()
 169 {
 170 /// Move the iterator to the next valid pad.
 171
 172   if (!IsValid()) return;
 173
 174   // Start position = up board of current pad + little step
 175   //
 176   TVector2 position
 177     = fCurrentPad.Position()
 178     + TVector2(0., fCurrentPad.Dimensions().Y() + AliMpConstants::LengthStep());
 179
 180   fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
 181
 182   if (fCurrentPad.IsValid()) return;
 183
 184   MoveRight();
 185 }
 186
 187 //______________________________________________________________________________
 188 Bool_t AliMpSectorAreaVPadIterator::IsDone() const
 189 {
 190 /// Is the iterator in the end ?
 191
 192   return !IsValid();
 193 }
 194
 195 //______________________________________________________________________________
 196 AliMpPad AliMpSectorAreaVPadIterator::CurrentItem () const
 197 {
 198 /// Return current pad.
 199
 200   return fCurrentPad;
 201 }
 202 //______________________________________________________________________________
 203 void AliMpSectorAreaVPadIterator::Invalidate()
 204 {
 205 /// Let the iterator point to the invalid position
 206
 207   fCurrentPad = AliMpPad::Invalid();
 208   fCurrentColumnPosition = 0;
 209 }
 210
 211
 212