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8ff54bb6 | 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 | ||
18 | /// \class AliMUONTriggerCircuit | |
19 | /// Contains as data members the Y positions of the X declusturized strips and | |
20 | /// the X positions of the (doubled or not) Y strips. | |
21 | /// This is used to associate the global positions to the fired strips of the | |
22 | /// local trigger output (see AliMUONTrackReconstructor::MakeTriggerTrack) | |
78649106 | 23 | /// |
24 | /// \author Philippe Crochet (LPCCFd) | |
8ff54bb6 | 25 | |
26 | #include "AliMUONTriggerCircuit.h" | |
8ff54bb6 | 27 | |
28 | #include "AliMpTriggerSegmentation.h" | |
29 | #include "AliMpTrigger.h" | |
30 | #include "AliMpSlat.h" | |
31 | #include "AliMpPCB.h" | |
32 | #include "AliMpSegmentation.h" | |
33 | #include "AliMpVSegmentation.h" | |
866c3232 | 34 | #include "AliMpCathodType.h" |
7103ac2d | 35 | #include "AliMpDDLStore.h" |
36 | #include "AliMpLocalBoard.h" | |
37 | #include "AliMpConstants.h" | |
8ff54bb6 | 38 | |
39 | #include "AliRun.h" | |
40 | #include "AliLog.h" | |
41 | ||
42 | #include <TMath.h> | |
9de45220 | 43 | #include <Riostream.h> |
8ff54bb6 | 44 | |
45 | /// \cond CLASSIMP | |
46 | ClassImp(AliMUONTriggerCircuit) | |
47 | /// \endcond | |
48 | ||
49 | //---------------------------------------------------------------------- | |
7103ac2d | 50 | AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONGeometryTransformer* transformer) |
51 | : TObject(), | |
52 | fTransformer(transformer), | |
53 | fCurrentSeg(0x0), | |
54 | fCurrentDetElem(0x0), | |
55 | fCurrentLocalBoard(0x0) | |
8ff54bb6 | 56 | { |
57 | /// Constructor | |
58 | ||
7103ac2d | 59 | for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { |
60 | fXpos11[i].Set(16); | |
61 | fYpos11[i].Set(31); | |
62 | fYpos21[i].Set(63); | |
63 | } | |
64 | ||
65 | for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { // board begins at 1 | |
66 | ||
67 | AliMpLocalBoard* localBoard = AliMpDDLStore::Instance()->GetLocalBoard(i); | |
68 | ||
69 | if (!localBoard) | |
70 | { | |
71 | AliError(Form("Did not get localboard %d",i)); | |
72 | continue; | |
73 | } | |
74 | ||
75 | LoadXPos(localBoard); | |
76 | LoadYPos(localBoard); | |
77 | ||
78 | } | |
79 | ||
8ff54bb6 | 80 | } |
81 | ||
82 | //---------------------------------------------------------------------- | |
83 | AliMUONTriggerCircuit::~AliMUONTriggerCircuit() | |
84 | { | |
85 | /// Destructor | |
7103ac2d | 86 | for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { |
87 | fXpos11[i].Reset(); | |
88 | fYpos11[i].Reset(); | |
89 | fYpos21[i].Reset(); | |
90 | } | |
91 | ||
8ff54bb6 | 92 | } |
93 | ||
94 | //---------------------------------------------------------------------- | |
95 | AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONTriggerCircuit& circuit) | |
7103ac2d | 96 | : TObject(circuit), |
97 | fTransformer(circuit.fTransformer), // do not copy, just pointed to | |
98 | fCurrentSeg(circuit.fCurrentSeg), | |
99 | fCurrentDetElem(circuit.fCurrentDetElem), | |
100 | fCurrentLocalBoard(circuit.fCurrentLocalBoard) | |
8ff54bb6 | 101 | { |
102 | /// Copy constructor | |
103 | ||
7103ac2d | 104 | for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { |
105 | fXpos11[i] = circuit.fXpos11[i]; | |
106 | fYpos11[i] = circuit.fYpos11[i]; | |
107 | fYpos21[i] = circuit.fYpos21[i]; | |
108 | } | |
8ff54bb6 | 109 | |
110 | } | |
111 | //---------------------------------------------------------------------- | |
112 | AliMUONTriggerCircuit& AliMUONTriggerCircuit::operator=(const AliMUONTriggerCircuit& circuit) | |
113 | { | |
114 | /// Assignment operator | |
115 | ||
116 | if (this == &circuit) return *this; | |
117 | ||
7103ac2d | 118 | fTransformer = circuit.fTransformer; |
119 | fCurrentSeg = circuit.fCurrentSeg; | |
120 | fCurrentDetElem = circuit.fCurrentDetElem; | |
121 | fCurrentLocalBoard = circuit.fCurrentLocalBoard; | |
8ff54bb6 | 122 | |
7103ac2d | 123 | for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { |
8ff54bb6 | 124 | fXpos11[i] = circuit.fXpos11[i]; |
8ff54bb6 | 125 | fYpos11[i] = circuit.fYpos11[i]; |
8ff54bb6 | 126 | fYpos21[i] = circuit.fYpos21[i]; |
7103ac2d | 127 | } |
8ff54bb6 | 128 | |
129 | return *this; | |
130 | ||
8ff54bb6 | 131 | } |
132 | ||
133 | //--------------------------------------------------------------------- | |
7103ac2d | 134 | void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) |
8ff54bb6 | 135 | { |
136 | /// fill fYpos11 and fYpos21 -> y position of X declusterized strips | |
137 | ||
7103ac2d | 138 | fCurrentLocalBoard = localBoard->GetId(); |
8ff54bb6 | 139 | Int_t ichamber = 0; |
140 | Int_t icathode = 0; | |
7103ac2d | 141 | |
142 | Int_t zeroDown = localBoard->GetSwitch(AliMpLocalBoard::kZeroDown); | |
143 | Int_t zeroUp = localBoard->GetSwitch(AliMpLocalBoard::kZeroUp); | |
144 | ||
145 | Int_t iline = localBoard->GetPosition().GetFirst(); | |
146 | Int_t icol = localBoard->GetPosition().GetSecond(); | |
147 | if ( iline == 5 ) --icol; | |
148 | ||
8ff54bb6 | 149 | //--- first plane |
150 | ichamber = 10; | |
7103ac2d | 151 | fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); |
8ff54bb6 | 152 | |
7103ac2d | 153 | fCurrentSeg = AliMpSegmentation::Instance() |
154 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
155 | ||
156 | Int_t iFirstStrip = FirstStrip(localBoard); | |
157 | Int_t iLastStrip = iFirstStrip + 16; | |
8ff54bb6 | 158 | Int_t iStripCircuit = 0; |
7103ac2d | 159 | |
160 | FillXstrips(icol, iFirstStrip, iLastStrip, | |
161 | iStripCircuit, fYpos11[fCurrentLocalBoard]); | |
8ff54bb6 | 162 | |
163 | //--- second plane | |
164 | ichamber = 12; | |
7103ac2d | 165 | fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); |
166 | ||
167 | fCurrentSeg = AliMpSegmentation::Instance() | |
168 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
8ff54bb6 | 169 | |
170 | // second plane middle part | |
7103ac2d | 171 | Int_t iFirstStripMiddle = FirstStrip(localBoard); |
172 | Int_t iLastStripMiddle = iFirstStrip + 16; | |
173 | iStripCircuit = 8; | |
174 | ||
175 | FillXstrips(icol, iFirstStripMiddle, iLastStripMiddle, | |
176 | iStripCircuit, fYpos21[fCurrentLocalBoard]); | |
8ff54bb6 | 177 | |
178 | // second plane upper part | |
179 | if (zeroUp == 0) { // something up | |
180 | Int_t iFirstStripUp; | |
181 | Int_t iLastStripUp; | |
7103ac2d | 182 | Int_t icolUp = icol; |
183 | ||
8ff54bb6 | 184 | // check if we need to move to another detElemId |
7103ac2d | 185 | AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,iLastStripMiddle+1),kFALSE); |
186 | ||
8ff54bb6 | 187 | if (pad.IsValid()) { // upper strips within same detElemId |
188 | iFirstStripUp = iLastStripMiddle; | |
7103ac2d | 189 | iLastStripUp = iFirstStripUp + 8; |
190 | ||
8ff54bb6 | 191 | } else { // upper strips in another detElemId |
7103ac2d | 192 | fCurrentDetElem = AliMpDDLStore::Instance()-> |
193 | GetNextDEfromLocalBoard(fCurrentLocalBoard, ichamber); | |
194 | ||
195 | fCurrentSeg = AliMpSegmentation::Instance() | |
196 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
8ff54bb6 | 197 | |
198 | iFirstStripUp = 0; | |
7103ac2d | 199 | iLastStripUp = iFirstStripUp + 8; |
8ff54bb6 | 200 | if (iline == 4) icolUp = icol - 1; // special case |
201 | if (iline == 5) icolUp = icol + 1; // special case | |
202 | } | |
203 | ||
7103ac2d | 204 | iStripCircuit = 24; |
205 | FillXstrips(icolUp, iFirstStripUp, iLastStripUp, | |
206 | iStripCircuit, fYpos21[fCurrentLocalBoard]); | |
8ff54bb6 | 207 | |
208 | // fill strip between middle and upper part | |
7103ac2d | 209 | fYpos21[fCurrentLocalBoard][47] = (fYpos21[fCurrentLocalBoard][46] + |
210 | fYpos21[fCurrentLocalBoard][48])/2.; | |
8ff54bb6 | 211 | } // end of something up |
212 | ||
213 | // restore current detElemId & segmentation | |
7103ac2d | 214 | fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); |
215 | fCurrentSeg = AliMpSegmentation::Instance() | |
216 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
8ff54bb6 | 217 | |
218 | // second plane lower part | |
219 | if (zeroDown == 0) { // something down | |
220 | Int_t iFirstStripDo; | |
221 | Int_t iLastStripDo; | |
7103ac2d | 222 | Int_t icolDo = icol; |
8ff54bb6 | 223 | |
224 | // check if we need to move to another detElemId | |
7103ac2d | 225 | AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,iFirstStripMiddle-1),kFALSE); |
8ff54bb6 | 226 | if (pad.IsValid()) { // lower strips within same detElemId |
227 | iFirstStripDo = iFirstStripMiddle - 8; | |
7103ac2d | 228 | iLastStripDo = iFirstStripDo + 8; |
229 | ||
8ff54bb6 | 230 | } else { // lower strips in another detElemId |
7103ac2d | 231 | fCurrentDetElem = AliMpDDLStore::Instance() |
232 | ->GetPreviousDEfromLocalBoard(fCurrentLocalBoard, ichamber); | |
233 | ||
234 | fCurrentSeg = AliMpSegmentation::Instance() | |
235 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
8ff54bb6 | 236 | |
237 | // get iFirstStrip in this module | |
7103ac2d | 238 | const AliMpTriggerSegmentation* trig = (AliMpTriggerSegmentation*)(fCurrentSeg); |
8ff54bb6 | 239 | const AliMpTrigger* t = trig->Slat(); |
240 | const AliMpSlat* slat = t->GetLayer(0); | |
7103ac2d | 241 | |
8ff54bb6 | 242 | if (iline == 5) icolDo = icol + 1; // special case |
7103ac2d | 243 | if (iline == 6) icolDo = icol - 1; // special case |
244 | ||
8ff54bb6 | 245 | const AliMpPCB* pcb = slat->GetPCB(icolDo-1); |
246 | iFirstStripDo = (pcb->Iymax() + 1) - 8; | |
247 | iLastStripDo = iFirstStripDo + 8; | |
248 | } | |
249 | ||
7103ac2d | 250 | iStripCircuit = 0; |
251 | FillXstrips(icolDo, iFirstStripDo, iLastStripDo, | |
252 | iStripCircuit, fYpos21[fCurrentLocalBoard]); | |
8ff54bb6 | 253 | |
254 | // fill strip between middle and upper part | |
7103ac2d | 255 | fYpos21[fCurrentLocalBoard][15] = (fYpos21[fCurrentLocalBoard][14] + |
256 | fYpos21[fCurrentLocalBoard][16])/2.; | |
8ff54bb6 | 257 | } // end of something down |
258 | ||
259 | } | |
260 | ||
261 | //---------------------------------------------------------------------- | |
7103ac2d | 262 | void AliMUONTriggerCircuit::FillXstrips(const Int_t icol, |
263 | const Int_t iFirstStrip, const Int_t iLastStrip, | |
264 | Int_t liStripCircuit, TArrayF& ypos) | |
265 | { | |
266 | /// fill | |
267 | Double_t xyGlobal[2] = {0.}; | |
268 | for (Int_t istrip = iFirstStrip; istrip < iLastStrip; ++istrip) { | |
269 | ||
270 | AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,istrip),kTRUE); | |
271 | if ( !pad.IsValid() ) { | |
272 | StdoutToAliError(cout << "Pad not found in seg " << endl; | |
273 | fCurrentSeg->Print(); | |
274 | cout << " ix,iy=" << icol-1 << "," << istrip << endl; | |
275 | ); | |
276 | } | |
277 | Float_t yDim = pad.Dimensions().Y(); // half size! | |
278 | ||
279 | XYGlobal(pad,xyGlobal); | |
280 | ||
281 | ypos[2*liStripCircuit] = xyGlobal[1]; | |
282 | if (istrip != (iLastStrip - 1)) ypos[2*liStripCircuit+1] = xyGlobal[1] + yDim; | |
283 | liStripCircuit++; | |
284 | } | |
285 | } | |
286 | ||
287 | ||
288 | //---------------------------------------------------------------------- | |
289 | void AliMUONTriggerCircuit::LoadXPos(AliMpLocalBoard* localBoard) | |
8ff54bb6 | 290 | { |
291 | /// fill fXpos11 -> x position of Y strips for the first plane only | |
292 | /// fXpos11 contains the x position of Y strip for the current circuit | |
293 | /// taking into account whether or nor not part(s) of the circuit | |
294 | /// (middle, up or down) has(have) 16 strips (handdled by means of switchs) | |
7103ac2d | 295 | |
296 | fCurrentLocalBoard = localBoard->GetId(); | |
297 | ||
8ff54bb6 | 298 | Int_t ichamber = 10; |
299 | Int_t icathode = 1; | |
300 | ||
7103ac2d | 301 | Int_t x2u = localBoard->GetSwitch(AliMpLocalBoard::kX2u); |
302 | Int_t x2m = localBoard->GetSwitch(AliMpLocalBoard::kX2m); | |
303 | Int_t x2d = localBoard->GetSwitch(AliMpLocalBoard::kX2d); | |
304 | Int_t zeroAllYLSB = localBoard->GetSwitch(AliMpLocalBoard::kZeroAllYLSB); | |
305 | ||
306 | Int_t iStripCircuit = 0; | |
307 | Int_t iFirstStrip = 0; | |
308 | Int_t iLastStrip = 0; | |
309 | Bool_t doubling = kFALSE; | |
8ff54bb6 | 310 | |
7103ac2d | 311 | Int_t iline = localBoard->GetPosition().GetFirst(); |
312 | Int_t icol = localBoard->GetPosition().GetSecond(); | |
313 | if ( iline == 5 ) --icol; | |
8ff54bb6 | 314 | |
7103ac2d | 315 | fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); |
316 | ||
317 | fCurrentSeg = AliMpSegmentation::Instance() | |
318 | ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); | |
8ff54bb6 | 319 | |
320 | // check if one needs a strip doubling or not | |
7103ac2d | 321 | if ( (x2u || x2m || x2d ) && x2m ) doubling = kTRUE; |
322 | ||
0d528e1f | 323 | |
8ff54bb6 | 324 | // check if one starts at strip = 0 or 8 (boards 26-29 and 143-146) |
7103ac2d | 325 | if (zeroAllYLSB) iStripCircuit = 8; |
8ff54bb6 | 326 | |
327 | // get iFirstStrip in this module | |
7103ac2d | 328 | const AliMpTriggerSegmentation* trig = (AliMpTriggerSegmentation*)(fCurrentSeg); |
8ff54bb6 | 329 | const AliMpTrigger* t = trig->Slat(); |
330 | const AliMpSlat* slat = t->GetLayer(0); | |
331 | ||
332 | const AliMpPCB* pcb = slat->GetPCB(icol-1); | |
333 | iFirstStrip = pcb->Ixmin(); | |
334 | ||
7103ac2d | 335 | |
0d528e1f | 336 | if (doubling || zeroAllYLSB == 1) iLastStrip = iFirstStrip + 8; |
8ff54bb6 | 337 | else iLastStrip = iFirstStrip + 16; |
338 | ||
7103ac2d | 339 | FillYstrips(iFirstStrip, iLastStrip, iStripCircuit, doubling); |
8ff54bb6 | 340 | } |
341 | ||
342 | //---------------------------------------------------------------------- | |
7103ac2d | 343 | void AliMUONTriggerCircuit::FillYstrips(const Int_t iFirstStrip, const Int_t iLastStrip, |
344 | Int_t liStripCircuit, | |
345 | const Bool_t doubling) | |
8ff54bb6 | 346 | { |
347 | /// fill | |
7103ac2d | 348 | Double_t xyGlobal[2] = {0.}; |
349 | ||
350 | for (Int_t istrip = iFirstStrip; istrip < iLastStrip; ++istrip) { | |
0d528e1f | 351 | |
7103ac2d | 352 | AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(istrip,0),kTRUE); |
0d528e1f | 353 | |
8ff54bb6 | 354 | if ( !pad.IsValid() ) |
355 | { | |
356 | StdoutToAliError(cout << "Pad not found in seg " << endl; | |
7103ac2d | 357 | fCurrentSeg->Print(); |
8ff54bb6 | 358 | cout << " ix,iy=" << istrip << "," << 0 << endl; |
359 | ); | |
360 | } | |
7103ac2d | 361 | Float_t xDim = pad.Dimensions().X(); // half size! |
8ff54bb6 | 362 | |
7103ac2d | 363 | XYGlobal(pad,xyGlobal); |
8ff54bb6 | 364 | |
7103ac2d | 365 | if (!doubling) { |
366 | fXpos11[fCurrentLocalBoard].AddAt(xyGlobal[0], liStripCircuit); | |
367 | } else if (doubling) { | |
368 | ||
369 | fXpos11[fCurrentLocalBoard].AddAt(TMath::Sign(1.,xyGlobal[0]) * | |
370 | (TMath::Abs(xyGlobal[0]) - xDim/2.), 2*liStripCircuit); | |
371 | ||
372 | fXpos11[fCurrentLocalBoard].AddAt(TMath::Sign(1.,xyGlobal[0]) * | |
373 | (TMath::Abs(fXpos11[fCurrentLocalBoard][2*liStripCircuit]) + xDim), | |
374 | 2*liStripCircuit + 1); | |
375 | } | |
376 | ||
8ff54bb6 | 377 | liStripCircuit++; |
378 | } | |
379 | } | |
380 | ||
381 | //---------------------------------------------------------------------- | |
7103ac2d | 382 | void AliMUONTriggerCircuit::XYGlobal(const AliMpPad& pad, |
383 | Double_t* xyGlobal) | |
8ff54bb6 | 384 | { |
7103ac2d | 385 | /// returns pad x & y positions and x & y pad dimensions in global coordinates |
386 | /// note: no need for transformation for pad dimensions | |
8ff54bb6 | 387 | |
7103ac2d | 388 | // get the pad position and dimensions |
389 | Double_t xl1 = pad.Position().X(); | |
390 | Double_t yl1 = pad.Position().Y(); | |
391 | Double_t zg1 = 0; | |
392 | ||
393 | // positions from local to global | |
394 | fTransformer->Local2Global(fCurrentDetElem, xl1, yl1, 0, | |
395 | xyGlobal[0], xyGlobal[1], zg1); | |
8ff54bb6 | 396 | } |
7103ac2d | 397 | |
8ff54bb6 | 398 | |
399 | //---------------------------------------------------------------------- | |
7103ac2d | 400 | //--- methods which return member data related info |
401 | //---------------------------------------------------------------------- | |
402 | Float_t AliMUONTriggerCircuit::GetY11Pos(Int_t localBoardId, Int_t istrip) const | |
8ff54bb6 | 403 | { |
7103ac2d | 404 | /// returns Y position of X strip istrip in MC11 |
405 | return fYpos11[localBoardId][istrip]; | |
8ff54bb6 | 406 | } |
8ff54bb6 | 407 | //---------------------------------------------------------------------- |
7103ac2d | 408 | Float_t AliMUONTriggerCircuit::GetY21Pos(Int_t localBoardId, Int_t istrip) const |
8ff54bb6 | 409 | { |
7103ac2d | 410 | /// returns Y position of X strip istrip in MC21 |
411 | return fYpos21[localBoardId][istrip]; | |
8ff54bb6 | 412 | } |
8ff54bb6 | 413 | //---------------------------------------------------------------------- |
7103ac2d | 414 | Float_t AliMUONTriggerCircuit::GetX11Pos(Int_t localBoardId, Int_t istrip) const |
8ff54bb6 | 415 | { |
7103ac2d | 416 | /// returns X position of Y strip istrip in MC11 |
417 | return fXpos11[localBoardId][istrip]; | |
8ff54bb6 | 418 | } |
419 | ||
420 | //---------------------------------------------------------------------- | |
7103ac2d | 421 | Int_t AliMUONTriggerCircuit::FirstStrip(AliMpLocalBoard* localBoard) |
8ff54bb6 | 422 | { |
423 | /// returns the first strip from mapping for board boardName | |
424 | /// take care of special case for boards RC1L6B12 & LC1L6B12 | |
425 | Int_t iFirstStrip = -1; | |
7103ac2d | 426 | Int_t boardNumber = atoi(localBoard->GetName()+6); |
427 | ||
428 | Int_t iline = localBoard->GetPosition().GetFirst(); | |
429 | Int_t icol = localBoard->GetPosition().GetSecond(); | |
430 | if ( iline == 5 ) --icol; | |
431 | ||
8ff54bb6 | 432 | switch (boardNumber) |
433 | { | |
434 | case 12: | |
435 | iFirstStrip = 0; | |
436 | break; | |
437 | case 34: | |
438 | iFirstStrip = 16; | |
439 | break; | |
440 | case 56: | |
441 | iFirstStrip = 32; | |
442 | break; | |
443 | case 78: | |
444 | iFirstStrip = 48; | |
445 | break; | |
446 | } | |
7103ac2d | 447 | if (icol == 1 && iline == 6) iFirstStrip += 16; // special case |
8ff54bb6 | 448 | return iFirstStrip; |
449 | } | |
450 |