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4 * Author: The ALICE Off-line Project. *
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14 **************************************************************************/
17 // $MpId: AliMpSectorAreaHPadIterator.cxx,v 1.7 2006/05/24 13:58:46 ivana Exp $
20 //-----------------------------------------------------------------------------
21 // Class AliMpSectorAreaHPadIterator
22 // ---------------------------------
23 // Class, which defines an iterator over the pads
24 // inside a given area in a sector in horizontal direction.
25 // Included in AliRoot: 2003/05/02
26 // Authors: David Guez, Ivana Hrivnacova; IPN Orsay
27 //-----------------------------------------------------------------------------
29 #include "AliMpSectorAreaHPadIterator.h"
30 #include "AliMpSectorSegmentation.h"
31 #include "AliMpConstants.h"
33 #include <Riostream.h>
36 ClassImp(AliMpSectorAreaHPadIterator)
39 //______________________________________________________________________________
40 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator(
41 const AliMpSectorSegmentation* segmentation,
42 const AliMpArea& area)
43 : AliMpVPadIterator(),
44 fkSegmentation(segmentation),
46 fCurrentPad(AliMpPad::Invalid()),
47 fCurrentRowPosition(0.)
49 /// Standard constructor, start in invalid position
52 //______________________________________________________________________________
53 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator(
54 const AliMpSectorAreaHPadIterator& right)
55 : AliMpVPadIterator(right),
58 fCurrentPad(AliMpPad::Invalid()),
59 fCurrentRowPosition(0.)
66 //______________________________________________________________________________
67 AliMpSectorAreaHPadIterator::AliMpSectorAreaHPadIterator()
68 : AliMpVPadIterator(),
71 fCurrentPad(AliMpPad::Invalid()),
72 fCurrentRowPosition(0.)
74 /// Default constructor.
77 //______________________________________________________________________________
78 AliMpSectorAreaHPadIterator::~AliMpSectorAreaHPadIterator()
87 //______________________________________________________________________________
88 AliMpSectorAreaHPadIterator&
89 AliMpSectorAreaHPadIterator::operator = (const AliMpSectorAreaHPadIterator& right)
91 /// Assignment operator
93 // check assignment to self
94 if (this == &right) return *this;
96 // base class assignment
97 AliMpVPadIterator::operator=(right);
99 fkSegmentation = right.fkSegmentation;
100 fkArea = right.fkArea;
101 fCurrentPad = right.fCurrentPad;
102 fCurrentRowPosition = right.fCurrentRowPosition;
111 //______________________________________________________________________________
112 Bool_t AliMpSectorAreaHPadIterator::IsValid() const
114 /// Is the iterator in a valid position?
116 return fCurrentPad.IsValid() ;
119 //______________________________________________________________________________
120 void AliMpSectorAreaHPadIterator::MoveUp()
122 /// Increase the current row position and searches the first valid pad.
124 Double_t dy = fkSegmentation->GetMinPadDimensions().Y();
126 while ( !fCurrentPad.IsValid() &&
127 fCurrentRowPosition + dy < fkArea.UpBorder())
129 fCurrentRowPosition += 2.*dy;
130 TVector2 position = TVector2(fkArea.LeftBorder(), fCurrentRowPosition);
132 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
140 //______________________________________________________________________________
141 void AliMpSectorAreaHPadIterator::First()
143 /// Reset the iterator, so that it points to the first available
146 if (!fkSegmentation) {
147 Fatal("First", "Segmentation is not defined");
151 // Start position = left down corner of the area
153 fCurrentRowPosition = fkArea.DownBorder();
154 TVector2 position(fkArea.LeftDownCorner());
156 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
160 // Set the row position to the center of pad
162 if (fCurrentPad.IsValid()) fCurrentRowPosition = fCurrentPad.Position().Y();
165 //______________________________________________________________________________
166 void AliMpSectorAreaHPadIterator::Next()
168 /// Move the iterator to the next valid pad.
170 if (!IsValid()) return;
172 // Start position = right board of current pad + little step
175 = fCurrentPad.Position()
176 + TVector2(fCurrentPad.Dimensions().X() + AliMpConstants::LengthStep(), 0.);
178 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.RightBorder());
180 if (fCurrentPad.IsValid()) return;
185 //______________________________________________________________________________
186 Bool_t AliMpSectorAreaHPadIterator::IsDone() const
188 /// Is the iterator in the end ?
193 //______________________________________________________________________________
194 AliMpPad AliMpSectorAreaHPadIterator::CurrentItem () const
196 /// Return current pad.
200 //______________________________________________________________________________
201 void AliMpSectorAreaHPadIterator::Invalidate()
203 /// Let the iterator point to the invalid position
205 fCurrentPad = AliMpPad::Invalid();
206 fCurrentRowPosition = 0;