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618ea77a | 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 | // $MpId$ | |
18 | ||
19 | #include "AliMpPCBPadIterator.h" | |
20 | ||
21 | #include "AliMpArea.h" | |
22 | #include "AliMpConstants.h" | |
23 | #include "AliLog.h" | |
24 | #include "AliMpPCB.h" | |
25 | #include "AliMpSlat.h" | |
26 | #include "AliMpSlatSegmentation.h" | |
27 | ||
28 | #include "Riostream.h" | |
29 | #include "TMath.h" | |
30 | ||
3d1463c8 | 31 | |
32 | //----------------------------------------------------------------------------- | |
618ea77a | 33 | /// \class AliMpPCBPadIterator |
34 | /// | |
35 | /// Iterates over slat pads within a region of constant pad size. | |
36 | /// | |
37 | /// \author Laurent Aphecetche | |
3d1463c8 | 38 | //----------------------------------------------------------------------------- |
618ea77a | 39 | |
40 | /// \cond CLASSIMP | |
41 | ClassImp(AliMpPCBPadIterator) | |
42 | /// \endcond | |
43 | ||
44 | //_____________________________________________________________________________ | |
45 | AliMpPCBPadIterator::AliMpPCBPadIterator(const AliMpSlat* slat, | |
46 | const AliMpArea& area) | |
47 | : AliMpVPadIterator(), | |
48 | fkSlat(slat), | |
49 | fSlatSegmentation(new AliMpSlatSegmentation(slat)), | |
50 | fMinIndices(), | |
51 | fMaxIndices(), | |
52 | fOffset(0,0), | |
53 | fCurrentPad(), | |
54 | fIsDone(kTRUE) | |
55 | { | |
71a2d3aa | 56 | /// |
57 | /// Normal ctor. | |
58 | /// Iteration will be done on the slat, over the crop of (area,slat_area) | |
59 | /// | |
618ea77a | 60 | if (!CropArea(area)) |
61 | { | |
62 | AliError(Form("Could not crop area : (x,y)min=(%e,%e) ; max=(%e,%e) for slat %s", | |
63 | area.LeftBorder(),area.DownBorder(), | |
64 | area.RightBorder(),area.UpBorder(),fkSlat->GetID())); | |
65 | } | |
66 | Invalidate(); | |
67 | } | |
68 | ||
69 | //_____________________________________________________________________________ | |
70 | AliMpPCBPadIterator::~AliMpPCBPadIterator() | |
71 | { | |
71a2d3aa | 72 | /// |
73 | /// Dtor. | |
74 | /// | |
618ea77a | 75 | delete fSlatSegmentation; |
76 | } | |
77 | ||
78 | //_____________________________________________________________________________ | |
79 | Bool_t | |
80 | AliMpPCBPadIterator::CropArea(const AliMpArea& area) | |
81 | { | |
71a2d3aa | 82 | /// |
83 | /// Checks the area is correct, and truncate it | |
84 | /// if it goes outside the slat. | |
618ea77a | 85 | |
86 | AliDebug(3,Form("Input area (%7.2f,%7.2f)->(%7.2f,%7.2f)", | |
87 | area.LeftBorder(),area.DownBorder(), | |
88 | area.RightBorder(),area.UpBorder())); | |
89 | ||
90 | const Double_t kEpsilon = AliMpConstants::LengthTolerance(); | |
91 | ||
92 | // Left and right x-limits have to come from first and last pcbs | |
93 | // to deal with short and rounded pcbs cases. | |
94 | AliMpPCB* first = fkSlat->FindPCB(area.LeftBorder(),area.DownBorder()); | |
95 | AliMpPCB* last = fkSlat->FindPCB(area.RightBorder()-kEpsilon, | |
96 | area.DownBorder()); | |
97 | ||
98 | // Check we're indeed dealing with only one pcb | |
99 | if ( first != last ) | |
100 | { | |
101 | AliError("This iterator supposed to work on a single PCB. Please check"); | |
102 | return kFALSE; | |
103 | } | |
104 | ||
105 | AliDebug(3,Form("PCB %s Ixmin %2d Ixmax %2d", | |
106 | first->GetID(),first->Ixmin(),first->Ixmax())); | |
107 | ||
108 | Double_t xleft = first->ActiveXmin(); | |
109 | Double_t xright = first->ActiveXmax() - kEpsilon; | |
110 | ||
111 | AliDebug(3,Form("xleft,xright=%e,%e",xleft,xright)); | |
112 | ||
1b36647b | 113 | Double_t xmin = TMath::Max(area.LeftBorder(),xleft); |
114 | Double_t xmax = TMath::Min(area.RightBorder(),xright); | |
115 | Double_t ymin = TMath::Max(area.DownBorder(),0.0); | |
116 | Double_t ymax = TMath::Min(area.UpBorder(),first->DY()*2.0-kEpsilon); | |
618ea77a | 117 | |
118 | AliDebug(3,Form("Cropped area (%e,%e)->(%e,%e)", | |
119 | xmin,ymin,xmax,ymax)); | |
120 | ||
121 | // At this point (xmin,ymin)->(xmax,ymax) should be a zone completely included | |
122 | // inside the slat. | |
123 | // We now try to convert this into a couple of indices pair indicating the | |
124 | // region to iterate over, using integer values, not floating point ones. | |
125 | // For this, we must find out the 4 pads that intersect the (xmin,ymin;xmax,ymax) | |
126 | // area. | |
127 | ||
128 | Int_t ixmin = first->Ixmin() + TMath::FloorNint((xmin-first->ActiveXmin())/first->PadSizeX()); | |
129 | Int_t ixmax = first->Ixmin() + TMath::CeilNint((xmax-first->ActiveXmin())/first->PadSizeX()) - 1; | |
130 | Int_t iymin = first->Iymin() + TMath::FloorNint((ymin-first->Ymin())/first->PadSizeY()); | |
131 | Int_t iymax = first->Iymin() + TMath::CeilNint((ymax-first->Ymin())/first->PadSizeY()) - 1; | |
132 | ||
133 | ||
134 | fMinIndices.Set(ixmin,iymin); | |
135 | fMaxIndices.Set(ixmax,iymax); | |
136 | ||
137 | AliDebug(3,Form("Paddified cropped area (%d,%d)->(%d,%d) %d,%d ; %d,%d", | |
138 | ixmin,iymin,ixmax,iymax, | |
139 | fMinIndices.GetFirst(),fMinIndices.GetSecond(), | |
140 | fMaxIndices.GetFirst(),fMaxIndices.GetSecond())); | |
141 | ||
142 | return fMinIndices.IsValid() && fMaxIndices.IsValid(); | |
143 | } | |
144 | ||
145 | //_____________________________________________________________________________ | |
146 | AliMpPad | |
147 | AliMpPCBPadIterator::CurrentItem() const | |
148 | { | |
71a2d3aa | 149 | /// |
150 | /// Returns the current iteration position (i.e. a pad) | |
151 | /// | |
618ea77a | 152 | return fCurrentPad; |
153 | } | |
154 | ||
155 | //_____________________________________________________________________________ | |
156 | void | |
157 | AliMpPCBPadIterator::First() | |
158 | { | |
71a2d3aa | 159 | /// |
160 | /// (re)Starts the iteration. | |
161 | /// | |
618ea77a | 162 | |
163 | AliDebug(3,Form("area = (%d,%d)->(%d,%d)", | |
164 | fMinIndices.GetFirst(),fMinIndices.GetSecond(), | |
165 | fMaxIndices.GetFirst(),fMaxIndices.GetSecond())); | |
166 | fOffset = fMinIndices; | |
167 | fIsDone = kFALSE; | |
168 | SetPad(fCurrentPad,fOffset); | |
169 | if (!fCurrentPad.IsValid()) Next(); | |
170 | if ( !fCurrentPad.IsValid() ) | |
171 | { | |
172 | // did not find any valid pad in there, bailing out. | |
173 | fIsDone = kTRUE; | |
174 | AliError(Form("Could not initiate iterator for slat %s. " | |
175 | " Please check the area you gave : %d,%d to %d,%d", | |
176 | fkSlat->GetName(), | |
177 | fMinIndices.GetFirst(), | |
178 | fMinIndices.GetSecond(), | |
179 | fMaxIndices.GetFirst(), | |
180 | fMaxIndices.GetSecond())); | |
181 | return; | |
182 | } | |
183 | } | |
184 | ||
185 | //_____________________________________________________________________________ | |
186 | Bool_t | |
187 | AliMpPCBPadIterator::GetNextPosition(Int_t& ix, Int_t& iy) | |
188 | { | |
71a2d3aa | 189 | /// Get the next iteration position. |
190 | /// On input, fOffset must be a valid position (i.e. within iteration | |
191 | /// area already). | |
618ea77a | 192 | |
193 | ++ix; | |
194 | ||
195 | if ( ix > fMaxIndices.GetFirst() ) | |
196 | { | |
618ea77a | 197 | // Go back leftmost position... |
198 | ix = fMinIndices.GetFirst(); | |
199 | // ... and up | |
200 | ++iy; | |
201 | if ( iy > fMaxIndices.GetSecond() ) | |
202 | { | |
203 | return false; | |
204 | } | |
205 | } | |
206 | return true; | |
207 | } | |
208 | ||
209 | ||
210 | //_____________________________________________________________________________ | |
211 | void | |
212 | AliMpPCBPadIterator::Invalidate() | |
213 | { | |
71a2d3aa | 214 | /// |
215 | /// Invalidate the iterator. | |
216 | /// | |
618ea77a | 217 | fOffset = AliMpIntPair::Invalid(); |
218 | fCurrentPad = AliMpPad::Invalid(); | |
219 | fIsDone = kTRUE; | |
220 | } | |
221 | ||
222 | //_____________________________________________________________________________ | |
223 | Bool_t | |
224 | AliMpPCBPadIterator::IsDone() const | |
225 | { | |
71a2d3aa | 226 | /// |
227 | /// Whether the iteration is finished or not. | |
228 | /// | |
618ea77a | 229 | return fIsDone; |
230 | } | |
231 | ||
232 | //_____________________________________________________________________________ | |
233 | void | |
234 | AliMpPCBPadIterator::Next() | |
235 | { | |
71a2d3aa | 236 | /// This one is the meat of the class. |
237 | /// We're iterating in x-direction mainly, starting from | |
238 | /// lower-left of the iteration area, and proceeding right, | |
239 | /// until we reach right border, in which case we increment y | |
240 | /// and go back to leftmost position. | |
241 | /// End of iteration occurs when both x and y are outside the iteration | |
242 | /// window. | |
618ea77a | 243 | |
244 | if (IsDone()) return; | |
245 | ||
246 | AliMpPad pad(fCurrentPad); | |
247 | int n = 0; | |
248 | Int_t ix(fOffset.GetFirst()); | |
249 | Int_t iy(fOffset.GetSecond()); | |
250 | ||
251 | while ( ( pad == fCurrentPad || !pad.IsValid() ) && n<100 ) | |
252 | { | |
253 | ++n; | |
254 | if (GetNextPosition(ix,iy)==kFALSE) | |
255 | { | |
256 | Invalidate(); | |
257 | return; | |
258 | } | |
259 | SetPad(pad,AliMpIntPair(ix,iy)); | |
260 | } | |
261 | if ( n>=100 ) | |
262 | { | |
263 | AliFatal("This should not happen!"); | |
264 | } | |
265 | fCurrentPad = pad; | |
266 | } | |
267 | ||
268 | //_____________________________________________________________________________ | |
269 | void | |
270 | AliMpPCBPadIterator::Print(Option_t*) const | |
271 | { | |
272 | /// printout | |
273 | cout << Form("fkSlat=%p fSlatSegmentation=%p (%s)",fkSlat,fSlatSegmentation, | |
274 | fkSlat->GetName()) << endl | |
275 | << Form("minIndices=(%d,%d) maxIndices=(%d,%d)", | |
276 | fMinIndices.GetFirst(),fMinIndices.GetSecond(), | |
277 | fMaxIndices.GetFirst(),fMaxIndices.GetSecond()) << endl | |
278 | << Form("currentOffset=(%d,%d) isdone=%d currentpad=", | |
279 | fOffset.GetFirst(),fOffset.GetSecond(),IsDone()) << endl; | |
280 | fCurrentPad.Print(); | |
281 | } | |
282 | ||
283 | //_____________________________________________________________________________ | |
284 | void | |
285 | AliMpPCBPadIterator::SetPad(AliMpPad& pad, const AliMpIntPair& indices) | |
286 | { | |
71a2d3aa | 287 | /// |
288 | /// Sets the current pad. | |
289 | /// | |
618ea77a | 290 | pad = fSlatSegmentation->PadByIndices(indices,kFALSE); |
291 | if (pad.IsValid()) | |
292 | { | |
293 | fOffset = indices; | |
294 | } | |
295 | } |