1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
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14 **************************************************************************/
17 // $MpId: AliMpSectorAreaVPadIterator.cxx,v 1.8 2006/05/24 13:58:46 ivana Exp $
20 // Class AliMpSectorAreaVPadIterator
21 // ---------------------------------
22 // Class, which defines an iterator over the pads
23 // inside a given area in a sector in vertical direction.
24 // Included in AliRoot: 2003/05/02
25 // Authors: David Guez, Ivana Hrivnacova; IPN Orsay
27 #include "AliMpSectorAreaVPadIterator.h"
28 #include "AliMpSectorSegmentation.h"
29 #include "AliMpConstants.h"
33 #include <Riostream.h>
36 ClassImp(AliMpSectorAreaVPadIterator)
39 //______________________________________________________________________________
40 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator(
41 const AliMpSectorSegmentation* segmentation,
42 const AliMpArea& area)
43 : AliMpVPadIterator(),
44 fkSegmentation(segmentation),
46 fCurrentPad(AliMpPad::Invalid()),
47 fCurrentColumnPosition(0.)
49 /// Standard constructor, start in invalid position
52 //______________________________________________________________________________
53 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator(
54 const AliMpSectorAreaVPadIterator& right)
55 : AliMpVPadIterator(right),
58 fCurrentPad(AliMpPad::Invalid()),
59 fCurrentColumnPosition(0.)
66 //______________________________________________________________________________
67 AliMpSectorAreaVPadIterator::AliMpSectorAreaVPadIterator()
68 : AliMpVPadIterator(),
71 fCurrentPad(AliMpPad::Invalid()),
72 fCurrentColumnPosition(0.)
74 /// Default constructor.
77 //______________________________________________________________________________
78 AliMpSectorAreaVPadIterator::~AliMpSectorAreaVPadIterator()
87 //______________________________________________________________________________
88 AliMpSectorAreaVPadIterator&
89 AliMpSectorAreaVPadIterator::operator = (const AliMpSectorAreaVPadIterator& 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 fCurrentColumnPosition = right.fCurrentColumnPosition;
111 //______________________________________________________________________________
112 Bool_t AliMpSectorAreaVPadIterator::IsValid() const
114 /// Is the iterator in a valid position?
116 return fCurrentPad.IsValid() ;
119 //______________________________________________________________________________
120 void AliMpSectorAreaVPadIterator::MoveRight()
122 /// Increase the current row position and searches the first valid pad.
124 Double_t dx = fkSegmentation->GetMinPadDimensions().X();
126 while ( !fCurrentPad.IsValid() &&
127 fCurrentColumnPosition + dx < fkArea.RightBorder())
129 fCurrentColumnPosition += 2.*dx;
130 TVector2 position = TVector2(fCurrentColumnPosition, fkArea.DownBorder());
132 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
140 //______________________________________________________________________________
141 void AliMpSectorAreaVPadIterator::First()
143 /// Reset the iterator, so that it points to the first available
146 if (!fkSegmentation) {
147 AliFatal("Segmentation is not defined");
151 // Start position = left down corner of the area
153 fCurrentColumnPosition = fkArea.LeftBorder();
154 TVector2 position(fkArea.LeftDownCorner());
156 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
160 // Set the column position to the center of pad
162 if (fCurrentPad.IsValid()) fCurrentColumnPosition = fCurrentPad.Position().X();
165 //______________________________________________________________________________
166 void AliMpSectorAreaVPadIterator::Next()
168 /// Move the iterator to the next valid pad.
170 if (!IsValid()) return;
172 // Start position = up board of current pad + little step
175 = fCurrentPad.Position()
176 + TVector2(0., fCurrentPad.Dimensions().Y() + AliMpConstants::LengthStep());
178 fCurrentPad = fkSegmentation->PadByDirection(position, fkArea.UpBorder());
180 if (fCurrentPad.IsValid()) return;
185 //______________________________________________________________________________
186 Bool_t AliMpSectorAreaVPadIterator::IsDone() const
188 /// Is the iterator in the end ?
193 //______________________________________________________________________________
194 AliMpPad AliMpSectorAreaVPadIterator::CurrentItem () const
196 /// Return current pad.
200 //______________________________________________________________________________
201 void AliMpSectorAreaVPadIterator::Invalidate()
203 /// Let the iterator point to the invalid position
205 fCurrentPad = AliMpPad::Invalid();
206 fCurrentColumnPosition = 0;