3 //**************************************************************************
4 //* This file is property of and copyright by the ALICE HLT Project *
5 //* ALICE Experiment at CERN, All rights reserved. *
7 //* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
8 //* for The ALICE HLT Project. *
10 //* Permission to use, copy, modify and distribute this software and its *
11 //* documentation strictly for non-commercial purposes is hereby granted *
12 //* without fee, provided that the above copyright notice appears in all *
13 //* copies and that both the copyright notice and this permission notice *
14 //* appear in the supporting documentation. The authors make no claims *
15 //* about the suitability of this software for any purpose. It is *
16 //* provided "as is" without express or implied warranty. *
17 //**************************************************************************
19 /// @file AliHLTTPCTrackGeometry.cxx
20 /// @author Matthias Richter
22 /// @brief Desciption of a track by a sequence of track points
25 #include "AliHLTTPCTrackGeometry.h"
26 #include "AliHLTTPCTransform.h"
27 #include "AliHLTTPCSpacePointData.h"
28 #include "AliHLTTPCClusterDataFormat.h"
29 #include "AliHLTTPCSpacePointContainer.h"
30 #include "AliHLTTPCHWCFSpacePointContainer.h"
31 #include "AliHLTTPCDefinitions.h"
32 #include "AliHLTComponent.h"
33 #include "AliHLTGlobalBarrelTrack.h"
34 #include "AliHLTDataDeflater.h"
35 #include "AliHLTErrorGuard.h"
40 /** ROOT macro for the implementation of ROOT specific class methods */
41 ClassImp(AliHLTTPCTrackGeometry)
43 AliHLTTPCTrackGeometry::AliHLTTPCTrackGeometry()
44 : AliHLTTrackGeometry()
46 , fDriftTimeFactorA(0.)
47 , fDriftTimeOffsetA(0.)
48 , fDriftTimeFactorC(0.)
49 , fDriftTimeOffsetC(0.)
51 /// standard constructor
54 AliHLTTPCTrackGeometry::AliHLTTPCTrackGeometry(const AliHLTTPCTrackGeometry& src)
55 : AliHLTTrackGeometry(src)
56 , fRawTrackPoints(src.fRawTrackPoints)
57 , fDriftTimeFactorA(0.)
58 , fDriftTimeOffsetA(0.)
59 , fDriftTimeFactorC(0.)
60 , fDriftTimeOffsetC(0.)
65 AliHLTTPCTrackGeometry& AliHLTTPCTrackGeometry::operator=(const AliHLTTPCTrackGeometry& src)
67 /// assignment operator
68 AliHLTTrackGeometry::operator=(src);
69 fRawTrackPoints.assign(src.fRawTrackPoints.begin(), src.fRawTrackPoints.end());
73 AliHLTTPCTrackGeometry::~AliHLTTPCTrackGeometry()
78 float AliHLTTPCTrackGeometry::GetPlaneAlpha(AliHLTUInt32_t planeId) const
80 /// alpha of the plane
81 UInt_t slice=AliHLTTPCSpacePointData::GetSlice(planeId);
82 float alpha=( slice + 0.5 ) * TMath::Pi() / 9.0;
83 if (alpha>TMath::TwoPi()) alpha-=TMath::TwoPi();
87 float AliHLTTPCTrackGeometry::GetPlaneR(AliHLTUInt32_t planeId) const
89 /// radial distance from global {0,0,0}
90 UInt_t partition=AliHLTTPCSpacePointData::GetPatch(planeId);
91 UInt_t number=AliHLTTPCSpacePointData::GetNumber(planeId);
92 Int_t row=AliHLTTPCTransform::GetFirstRow(partition)+number;
93 return AliHLTTPCTransform::Row2X(row);
96 float AliHLTTPCTrackGeometry::GetPlaneTheta(AliHLTUInt32_t /*planeId*/) const
98 /// theta of the plane
102 bool AliHLTTPCTrackGeometry::CheckBounds(AliHLTUInt32_t planeId, float u, float /*v*/) const
104 /// check bounds in u and v coordinate
105 float r=GetPlaneR(planeId);
106 if (r<AliHLTTPCTransform::GetFirstRow(0)) return false;
108 // TODO: check if the pad width needs to be considered here
109 return TMath::Abs(TMath::ASin(u/r))<=TMath::Pi()/18;
112 int AliHLTTPCTrackGeometry::CalculateTrackPoints(const AliHLTExternalTrackParam& track)
114 /// calculate the track points, expects the global magnetic field to be initialized
115 AliHLTGlobalBarrelTrack bt(track);
116 return CalculateTrackPoints(bt);
119 int AliHLTTPCTrackGeometry::CalculateTrackPoints(AliHLTGlobalBarrelTrack& track)
121 /// calculate the track points, expects the global magnetic field to be initialized
125 firstpadrow<AliHLTTPCTransform::GetNRows() &&
126 AliHLTTPCTransform::Row2X(firstpadrow)+AliHLTTPCTransform::GetPadLength(firstpadrow)<track.GetX();
128 if (firstpadrow>=AliHLTTPCTransform::GetNRows()) return 0;
129 iResult=CalculateTrackPoints(track, firstpadrow, 1);
130 if (iResult>=0 && firstpadrow>0)
131 iResult=CalculateTrackPoints(track, firstpadrow-1, -1);
135 int AliHLTTPCTrackGeometry::CalculateTrackPoints(AliHLTGlobalBarrelTrack& track, int firstpadrow, int step)
137 /// calculate the track points, expects the global magnetic field to be initialized
138 float offsetAlpha=0.0;
139 for (int padrow=firstpadrow; padrow>=0 && padrow<AliHLTTPCTransform::GetNRows(); padrow+=step) {
140 float x=AliHLTTPCTransform::Row2X(padrow);
148 // start calculation of crossing points with padrow planes in the slice of the first point
149 // plane alpha corresponds to alpha of the track, switch to neighboring slice if the result
151 if ((result=track.CalculateCrossingPoint(x, track.GetAlpha()-offsetAlpha, y, z))<1) break;
152 float pointAlpha=TMath::ATan(y/x);
153 if (TMath::Abs(pointAlpha)>TMath::Pi()/18) {
154 offsetAlpha+=(pointAlpha>0?-1:1)*TMath::Pi()/9;
157 } while (result==0 && shift++<maxshift);
158 if (result<1) continue;
159 float planealpha=track.GetAlpha()-offsetAlpha;
160 if (planealpha<0) planealpha+=TMath::TwoPi();
161 if (planealpha>TMath::TwoPi()) planealpha-=TMath::TwoPi();
162 int slice=int(9*planealpha/TMath::Pi());
165 HLTError("invalid slice %d calculated from alpha %f", slice, track.GetAlpha());
167 int partition=AliHLTTPCTransform::GetPatch(padrow);
168 int row=padrow-AliHLTTPCTransform::GetFirstRow(partition);
169 UInt_t id=AliHLTTPCSpacePointData::GetID(slice, partition, row);
170 if (TMath::Abs(planealpha-GetPlaneAlpha(id))>0.0001) {
171 HLTError("alpha missmatch for plane %08x (slice %d): alpha from id %f (%.0f deg), expected %f (%.0f deg)", id, slice, GetPlaneAlpha(id), 180*GetPlaneAlpha(id)/TMath::Pi(), planealpha, 180*planealpha/TMath::Pi());
173 if (AddTrackPoint(AliHLTTrackPoint(id, y, z), AliHLTTPCSpacePointData::GetID(slice, partition, 0))>=0) {
174 Float_t rpt[3]={0.,y,z}; // row pad time
175 AliHLTTPCTransform::LocHLT2Raw(rpt, slice, padrow);
176 float m=fDriftTimeFactorA;
177 float n=fDriftTimeOffsetA;
182 if (TMath::Abs(m)>0.) {
184 fRawTrackPoints.push_back(AliHLTTrackPoint(id, rpt[1], rpt[2]));
185 // cout << " row " << setfill(' ') << setw(3) << fixed << right << padrow
186 // << " y " << setfill(' ') << setw(5) << fixed << right << setprecision (2) << y
187 // << " z " << setfill(' ') << setw(5) << fixed << right << setprecision (2) << z
188 // << " pad " << setfill(' ') << setw(5) << fixed << right << setprecision (2) << rpt[1]
189 // << " time " << setfill(' ') << setw(5) << fixed << right << setprecision (2) << rpt[2]
192 ALIHLTERRORGUARD(1, "drift time correction not initialized, can not add track points in raw coordinates");
199 int AliHLTTPCTrackGeometry::FindMatchingTrackPoint(AliHLTUInt32_t spacepointId, float spacepoint[3], AliHLTUInt32_t& planeId)
201 /// find the track point which can be associated to a spacepoint with coordinates and id
202 UInt_t slice=AliHLTTPCSpacePointData::GetSlice(spacepointId);
203 UInt_t partition=AliHLTTPCSpacePointData::GetPatch(spacepointId);
204 int row=AliHLTTPCTransform::GetPadRow(spacepoint[0]);
205 bool bSpecialRow=row==30 || row==90 || row==139;
206 if (row<AliHLTTPCTransform::GetFirstRow(partition) || row>AliHLTTPCTransform::GetLastRow(partition)) {
207 HLTError("row number %d calculated from x value %f is outside slice %d partition %d", row, spacepoint[0], slice, partition);
211 // find the crossing point of the track with the padrow plane where
213 // 1) calculate plane id from slice, partition and row (within partition)
214 row-=AliHLTTPCTransform::GetFirstRow(partition);
215 UInt_t id=AliHLTTPCSpacePointData::GetID(slice, partition, row);
216 const AliHLTTrackPoint* point=GetTrackPoint(id);
217 // track might be outside the partition and cross the central membrane
218 // search in the other half of the TPC
219 if (!point && slice<18) {
220 // search in the neighboring partition on the C side
221 id=AliHLTTPCSpacePointData::GetID(slice+18, partition, row);
222 point=GetTrackPoint(id);
223 } else if (!point && slice>=18) {
224 // search in the neighboring partition on the A side
225 id=AliHLTTPCSpacePointData::GetID(slice-18, partition, row);
226 point=GetTrackPoint(id);
229 // search in the neighboring partition, this takes account for rows
230 // 30, 90, and 139 which are partly in one and the other partition
231 if (!point && bSpecialRow) {
232 row+=AliHLTTPCTransform::GetFirstRow(partition);
233 row-=AliHLTTPCTransform::GetFirstRow(partition-1);
234 id=AliHLTTPCSpacePointData::GetID(slice, partition-1, row);
235 point=GetTrackPoint(id);
236 if (!point && slice<18) {
237 // search in the neighboring partition on the C side
238 id=AliHLTTPCSpacePointData::GetID(slice+18, partition-1, row);
239 point=GetTrackPoint(id);
240 } else if (!point && slice>=18) {
241 // search in the neighboring partition on the A side
242 id=AliHLTTPCSpacePointData::GetID(slice-18, partition-1, row);
243 point=GetTrackPoint(id);
249 if (point->HaveAssociatedSpacePoint()) {
250 if (GetVerbosity()>2) HLTInfo("descarding spacepoint 0x%08x z=%f y=%f z=%f: track point 0x%08x already occupied", spacepoint[0], spacepoint[1], spacepoint[2], planeId);
251 return 0; // already occupied
255 if (TMath::Abs(point->GetU()-spacepoint[1])>maxdy) {
256 if (GetVerbosity()>0) HLTInfo("descarding spacepoint 0x%08x y=%f z=%f: track point 0x%08x y %f outside tolerance %f", spacepoint[1], spacepoint[2], planeId, point->GetU(), maxdy);
259 if (TMath::Abs(point->GetV()-spacepoint[2])>maxdz) {
260 if (GetVerbosity()>0) HLTInfo("descarding spacepoint 0x%08x y=%f z=%f: track point 0x%08x z %f outside tolerance %f", spacepoint[1], spacepoint[2], planeId, point->GetV(), maxdz);
269 int AliHLTTPCTrackGeometry::RegisterTrackPoints(AliHLTTrackGrid* pGrid) const
271 /// register track points in the index grid, at this step the number
272 /// of tracks in each cell is counted
273 if (!pGrid) return -EINVAL;
275 for (vector<AliHLTTrackPoint>::const_iterator tp=TrackPoints().begin();
276 tp!=TrackPoints().end() && iResult>=0; tp++) {
277 AliHLTUInt32_t id=tp->GetId();
278 iResult=pGrid->CountSpacePoint(AliHLTTPCSpacePointData::GetSlice(id),
279 AliHLTTPCSpacePointData::GetPatch(id),
280 AliHLTTPCSpacePointData::GetNumber(id));
285 int AliHLTTPCTrackGeometry::FillTrackPoints(AliHLTTrackGrid* pGrid) const
287 /// fill track points to index grid
288 if (!pGrid) return -EINVAL;
290 for (vector<AliHLTTrackPoint>::const_iterator tp=TrackPoints().begin();
291 tp!=TrackPoints().end() && iResult>=0; tp++) {
292 AliHLTUInt32_t id=tp->GetId();
293 iResult=pGrid->AddSpacePoint(GetTrackId(),
294 AliHLTTPCSpacePointData::GetSlice(id),
295 AliHLTTPCSpacePointData::GetPatch(id),
296 AliHLTTPCSpacePointData::GetNumber(id));
301 AliHLTSpacePointContainer* AliHLTTPCTrackGeometry::ConvertToSpacePoints(bool bAssociated) const
303 /// create a collection of all points
304 std::auto_ptr<AliHLTTPCSpacePointContainer> spacepoints(new AliHLTTPCSpacePointContainer);
305 if (!spacepoints.get()) return NULL;
307 const vector<AliHLTTrackPoint>& trackPoints=TrackPoints();
309 while (i<trackPoints.size()) {
310 // allocate buffer for all points, even though the buffer might not be filled
311 // completely because of a partition change
312 int nofPoints=trackPoints.size()-i;
313 int blocksize=sizeof(AliHLTTPCClusterData)+nofPoints*sizeof(AliHLTTPCSpacePointData);
314 AliHLTUInt8_t* pBuffer=spacepoints->Alloc(blocksize);
315 if (!pBuffer) return NULL;
316 AliHLTTPCClusterData* pClusterData=reinterpret_cast<AliHLTTPCClusterData*>(pBuffer);
317 pClusterData->fSpacePointCnt=0;
318 AliHLTTPCSpacePointData* pClusters=pClusterData->fSpacePoints;
320 int currentPartition=-1;
321 for (; i<trackPoints.size(); i++) {
322 if (bAssociated && !trackPoints[i].HaveAssociatedSpacePoint()) continue;
323 AliHLTUInt32_t planeId=trackPoints[i].GetId();
324 int slice=AliHLTTPCSpacePointData::GetSlice(planeId);
325 int partition=AliHLTTPCSpacePointData::GetPatch(planeId);
326 int number=AliHLTTPCSpacePointData::GetNumber(planeId);
327 if ((currentSlice>=0 && currentSlice!=slice) || (currentPartition>=0 && currentPartition!=partition)) {
328 // change of partition or slice, need to go to next block
329 // 2011-07-26 currently all spacepoints go into one block, if separated
330 // blocks per partition are needed one has to leave the inner loop here
331 // and set the data block specification below
332 // Caution: not tested, only the last block seems to make it through
336 currentPartition=partition;
337 pClusters[pClusterData->fSpacePointCnt].fX=GetPlaneR(planeId);
338 pClusters[pClusterData->fSpacePointCnt].fY=trackPoints[i].GetU();
339 pClusters[pClusterData->fSpacePointCnt].fZ=trackPoints[i].GetV();
340 pClusters[pClusterData->fSpacePointCnt].fID=planeId;
341 pClusters[pClusterData->fSpacePointCnt].fPadRow=AliHLTTPCTransform::GetFirstRow(partition)+number;
342 pClusters[pClusterData->fSpacePointCnt].fSigmaY2=0.;
343 pClusters[pClusterData->fSpacePointCnt].fSigmaZ2=0.;
344 pClusters[pClusterData->fSpacePointCnt].fCharge=0;
345 pClusters[pClusterData->fSpacePointCnt].fQMax=0;
346 pClusters[pClusterData->fSpacePointCnt].fUsed=0;
347 pClusters[pClusterData->fSpacePointCnt].fTrackN=0;
348 pClusterData->fSpacePointCnt++;
350 AliHLTComponentBlockData bd;
351 AliHLTComponent::FillBlockData(bd);
353 bd.fSize=sizeof(AliHLTTPCClusterData)+pClusterData->fSpacePointCnt*sizeof(AliHLTTPCSpacePointData);
354 AliHLTComponent::SetDataType(bd.fDataType, "CLUSTERS", "TPC ");
355 bd.fSpecification=kAliHLTVoidDataSpec;//AliHLTTPCDefinitions::EncodeDataSpecification(currentSlice, currentSlice, currentPartition, currentPartition);
356 spacepoints->AddInputBlock(&bd);
359 return spacepoints.release();
362 const AliHLTTrackGeometry::AliHLTTrackPoint* AliHLTTPCTrackGeometry::GetRawTrackPoint(AliHLTUInt32_t id) const
364 /// get raw track point of id
365 const AliHLTTrackGeometry::AliHLTTrackPoint* p=find(&fRawTrackPoints[0], &fRawTrackPoints[fRawTrackPoints.size()], id);
366 if (p==&fRawTrackPoints[fRawTrackPoints.size()]) return 0;
370 AliHLTTrackGeometry::AliHLTTrackPoint* AliHLTTPCTrackGeometry::GetRawTrackPoint(AliHLTUInt32_t id)
372 /// get raw track point of id
373 AliHLTTrackGeometry::AliHLTTrackPoint* p=find(&fRawTrackPoints[0], &fRawTrackPoints[fRawTrackPoints.size()], id);
374 if (p==&fRawTrackPoints[fRawTrackPoints.size()]) return 0;
378 int AliHLTTPCTrackGeometry::FillRawResidual(int coordinate, TH2* histo, AliHLTSpacePointContainer* points) const
380 // fill residual histogram
381 if (!histo || !points) return -EINVAL;
382 const vector<AliHLTTrackPoint>& trackPoints=TrackPoints();
383 for (vector<AliHLTTrackPoint>::const_iterator trackpoint=trackPoints.begin();
384 trackpoint!=trackPoints.end(); trackpoint++) {
385 if (!trackpoint->HaveAssociatedSpacePoint()) continue;
386 for (vector<AliHLTTrackSpacepoint>::const_iterator sp=(trackpoint->GetSpacepoints()).begin();
387 sp!=(trackpoint->GetSpacepoints()).end(); sp++) {
388 AliHLTUInt32_t spacepointId=sp->fId;
389 vector<AliHLTTrackPoint>::const_iterator rawpoint=find(fRawTrackPoints.begin(), fRawTrackPoints.end(), trackpoint->GetId());
390 if (rawpoint==fRawTrackPoints.end()) {
391 HLTError("can not find track raw coordinates of track point 0x%08x", trackpoint->GetId());
394 if (!points->Check(spacepointId)) {
395 //HLTError("can not find associated space point 0x%08x of track point 0x%08x", spacepointId, trackpoint->GetId());
400 value=rawpoint->GetU()-points->GetY(spacepointId);
401 histo->Fill(GetPlaneR(trackpoint->GetId()), value);
403 value=rawpoint->GetV()-points->GetZ(spacepointId);
404 //histo->Fill(GetPlaneR(trackpoint->GetId()), value);
405 histo->Fill(rawpoint->GetV(), value);
412 int AliHLTTPCTrackGeometry::Write(const AliHLTGlobalBarrelTrack& track,
413 AliHLTSpacePointContainer* pSpacePoints,
414 AliHLTDataDeflater* pDeflater,
415 AliHLTUInt8_t* outputPtr,
417 vector<AliHLTUInt32_t>* writtenClusterIds,
418 const char* option) const
420 // write track block to buffer
421 if (size<=sizeof(AliHLTTPCTrackBlock)) return -ENOSPC;
422 AliHLTTPCTrackBlock* pTrackBlock=reinterpret_cast<AliHLTTPCTrackBlock*>(outputPtr);
423 pTrackBlock->fSize=sizeof(AliHLTTPCTrackBlock); // size of cluster block added later
424 float alpha=track.GetAlpha();
425 while (alpha<0.) alpha+=TMath::TwoPi();
426 while (alpha>TMath::TwoPi()) alpha-=TMath::TwoPi();
427 pTrackBlock->fSlice=AliHLTUInt8_t(9*alpha/TMath::Pi());
428 if (pTrackBlock->fSlice>=36) {
429 HLTError("invalid slice %d calculated from alpha %f", pTrackBlock->fSlice, track.GetAlpha());
431 pTrackBlock->fReserved=0;
432 pTrackBlock->fX = track.GetX();
433 pTrackBlock->fY = track.GetY();
434 pTrackBlock->fZ = track.GetZ();
435 pTrackBlock->fSinPsi = track.GetSnp();
436 pTrackBlock->fTgl = track.GetTgl();
437 pTrackBlock->fq1Pt = track.GetSigned1Pt();
440 pDeflater->InitBitDataOutput(reinterpret_cast<AliHLTUInt8_t*>(outputPtr+sizeof(AliHLTTPCTrackBlock)), size-sizeof(AliHLTTPCTrackBlock));
441 int result=WriteAssociatedClusters(pSpacePoints, pDeflater, writtenClusterIds, option);
442 if (result<0) return result;
443 pTrackBlock->fSize+=result;
444 return pTrackBlock->fSize;
447 int AliHLTTPCTrackGeometry::WriteAssociatedClusters(AliHLTSpacePointContainer* pSpacePoints,
448 AliHLTDataDeflater* pDeflater,
449 vector<AliHLTUInt32_t>* writtenClusterIds,
450 const char* /*option*/) const
452 // write associated clusters to buffer via deflater
453 if (!pDeflater || !pSpacePoints) return -EINVAL;
454 AliHLTTPCHWCFSpacePointContainer* pTPCRawSpacePoints=dynamic_cast<AliHLTTPCHWCFSpacePointContainer*>(pSpacePoints);
455 if (!pTPCRawSpacePoints) return -EINVAL;
457 bool bWriteSuccess=true;
458 int writtenClusters=0;
459 // filling of track points starts from first point on track outwards, and
460 // then from that point inwards. That's why the lower padrows might be in
461 // reverse order at the end of the track point array. If the last element
462 // is bigger than the first element, only trackpoints in ascending order
464 vector<AliHLTTrackPoint>::const_iterator clrow=fRawTrackPoints.end();
465 if (clrow!=fRawTrackPoints.begin()) {
467 AliHLTUInt32_t partition=AliHLTTPCSpacePointData::GetPatch(clrow->GetId());
468 AliHLTUInt32_t partitionrow=AliHLTTPCSpacePointData::GetNumber(clrow->GetId());
469 partitionrow+=AliHLTTPCTransform::GetFirstRow(partition);
470 AliHLTUInt32_t firstpartition=AliHLTTPCSpacePointData::GetPatch(fRawTrackPoints.begin()->GetId());
471 AliHLTUInt32_t firstpartitionrow=AliHLTTPCSpacePointData::GetNumber(fRawTrackPoints.begin()->GetId());
472 firstpartitionrow+=AliHLTTPCTransform::GetFirstRow(firstpartition);
473 if (partitionrow>=firstpartitionrow) {
475 clrow=fRawTrackPoints.begin();
478 const AliHLTUInt32_t clusterCountBitLength=AliHLTTPCDefinitions::fgkClusterParameterDefinitions[AliHLTTPCDefinitions::kClusterCount].fBitLength;
479 unsigned long dataPosition=pDeflater->GetCurrentByteOutputPosition();
480 for (unsigned row=0; row<159 && bWriteSuccess; row++) {
481 if (clrow!=fRawTrackPoints.end()) {
482 AliHLTUInt32_t thisPartition=AliHLTTPCSpacePointData::GetPatch(clrow->GetId());
483 AliHLTUInt32_t thisTrackRow=AliHLTTPCSpacePointData::GetNumber(clrow->GetId());
484 thisTrackRow+=AliHLTTPCTransform::GetFirstRow(thisPartition);
485 if (thisTrackRow==row) {
487 const vector<AliHLTTrackSpacepoint>& clusters=clrow->GetSpacepoints();
488 AliHLTUInt32_t haveClusters=clusters.size()>0;
489 // 1 bit for clusters on that padrow
490 bWriteSuccess=bWriteSuccess && pDeflater->OutputBit(haveClusters);
492 bWriteSuccess=bWriteSuccess && pDeflater->OutputBits(clusters.size(), clusterCountBitLength);
493 for (vector<AliHLTTrackSpacepoint>::const_iterator clid=clusters.begin();
494 clid!=clusters.end() && bWriteSuccess; clid++) {
495 if (!pSpacePoints->Check(clid->fId)) {
496 HLTError("can not find spacepoint 0x%08x", clid->fId);
499 if (writtenClusterIds) {
500 writtenClusterIds->push_back(clid->fId);
503 // FIXME: there is a bug in the calculation of the residuals stored with the
504 // assiciated space point, calculate again, but needs to be fixed
505 float deltapad =pSpacePoints->GetY(clid->fId)-clrow->GetU();//clid->fdU;
506 float deltatime =pSpacePoints->GetZ(clid->fId)-clrow->GetV();//clid->fdV;
507 float sigmaY2=pSpacePoints->GetYWidth(clid->fId);
508 float sigmaZ2=pSpacePoints->GetZWidth(clid->fId);
509 AliHLTUInt64_t charge=(AliHLTUInt64_t)pSpacePoints->GetCharge(clid->fId);
510 AliHLTUInt64_t qmax=(AliHLTUInt64_t)pTPCRawSpacePoints->GetQMax(clid->fId);
511 // cout << " row " << setfill(' ') << setw(3) << fixed << right << row
512 // << " pad " << setfill(' ') << setw(7) << fixed << right << setprecision (4) << pSpacePoints->GetY(clid->fId)
513 // << " dpad " << setfill(' ') << setw(7) << fixed << right << setprecision (4) << deltapad
514 // << " time " << setfill(' ') << setw(7) << fixed << right << setprecision (4) << pSpacePoints->GetZ(clid->fId)
515 // << " dtime " << setfill(' ') << setw(7) << fixed << right << setprecision (4) << deltatime
516 // << " charge " << setfill(' ') << setw(5) << fixed << right << charge
517 // << " qmax " << setfill(' ') << setw(4) << fixed << right << qmax
520 AliHLTUInt64_t deltapad64=0;
521 AliHLTUInt32_t signDeltaPad=0;
522 if (!isnan(deltapad)) {
523 if (deltapad<0.) {deltapad*=-1; signDeltaPad=1;}
524 deltapad*=AliHLTTPCDefinitions::fgkClusterParameterDefinitions[AliHLTTPCDefinitions::kResidualPad].fScale;
525 deltapad64=(AliHLTUInt64_t)round(deltapad);
527 AliHLTUInt64_t deltatime64=0;
528 AliHLTUInt32_t signDeltaTime=0;
529 if (!isnan(deltatime)) {
530 if (deltatime<0.) {deltatime*=-1; signDeltaTime=1;}
531 deltatime*=AliHLTTPCDefinitions::fgkClusterParameterDefinitions[AliHLTTPCDefinitions::kResidualTime].fScale;
532 deltatime64=(AliHLTUInt64_t)round(deltatime);
534 AliHLTUInt64_t sigmaY264=0;
535 if (!isnan(sigmaY2)) sigmaY264=(AliHLTUInt64_t)round(sigmaY2*AliHLTTPCDefinitions::fgkClusterParameterDefinitions[AliHLTTPCDefinitions::kSigmaY2].fScale);
536 AliHLTUInt64_t sigmaZ264=0;
537 if (!isnan(sigmaZ2)) sigmaZ264=(AliHLTUInt64_t)round(sigmaZ2*AliHLTTPCDefinitions::fgkClusterParameterDefinitions[AliHLTTPCDefinitions::kSigmaZ2].fScale);
538 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kResidualPad , deltapad64);
539 bWriteSuccess=bWriteSuccess && pDeflater->OutputBit(signDeltaPad);
540 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kResidualTime , deltatime64);
541 bWriteSuccess=bWriteSuccess && pDeflater->OutputBit(signDeltaTime);
542 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kSigmaY2 , sigmaY264);
543 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kSigmaZ2 , sigmaZ264);
544 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kCharge , charge);
545 bWriteSuccess=bWriteSuccess && pDeflater->OutputParameterBits(AliHLTTPCDefinitions::kQMax , qmax);
546 if (bWriteSuccess) writtenClusters++;
550 // set to next trackpoint
552 if (clrow!=fRawTrackPoints.begin()) {
553 AliHLTUInt32_t nextPartition=AliHLTTPCSpacePointData::GetPatch((clrow-1)->GetId());
554 AliHLTUInt32_t nextTrackRow=AliHLTTPCSpacePointData::GetNumber((clrow-1)->GetId());
555 nextTrackRow+=AliHLTTPCTransform::GetFirstRow(nextPartition);
556 if (thisTrackRow+1==nextTrackRow) {
559 // switch direction start from beginning
560 clrow=fRawTrackPoints.begin();
564 // all trackpoints processed
565 clrow=fRawTrackPoints.end();
572 // sequence not ordered, search
573 // this has been fixed and the search is no longer necessary
574 // for (clrow=fRawTrackPoints.begin(); clrow!=fRawTrackPoints.end(); clrow++) {
575 // if ((AliHLTTPCSpacePointData::GetNumber(clrow->GetId())+AliHLTTPCTransform::GetFirstRow(AliHLTTPCSpacePointData::GetPatch(clrow->GetId())))==row) break;
577 // if (clrow==fRawTrackPoints.end()) {
578 // clrow=fRawTrackPoints.begin();
579 // HLTWarning("no trackpoint on row %d, current point %d", row, thisTrackRow);
583 // no cluster on that padrow
584 AliHLTUInt32_t haveClusters=0;
585 bWriteSuccess=bWriteSuccess && pDeflater->OutputBit(haveClusters);
588 if (!bWriteSuccess) return -ENOSPC;
591 for (clrow=fRawTrackPoints.begin(); clrow!=fRawTrackPoints.end(); clrow++) {
592 allClusters+=clrow->GetSpacepoints().size();
594 if (allClusters!=writtenClusters) {
595 HLTError("track %d mismatch in written clusters: %d but expected %d", GetTrackId(), writtenClusters, allClusters);
598 pDeflater->Pad8Bits();
599 return pDeflater->GetCurrentByteOutputPosition()-dataPosition;
602 int AliHLTTPCTrackGeometry::Read(const AliHLTUInt8_t* buffer,
605 AliHLTUInt32_t& clusterBlockSize,
606 const char* /*option*/)
608 // read track block from buffer
610 if (!buffer) return -EINVAL;
611 if (size<sizeof(AliHLTTPCTrackBlock)) {
612 HLTError("buffer does not contain valid data of track model clusters");
615 const AliHLTTPCTrackBlock* pTrackBlock=reinterpret_cast<const AliHLTTPCTrackBlock*>(buffer);
616 if (pTrackBlock->fSize>size) {
617 HLTError("inconsistent track data block of size %d exceeds available buffer of size %d", pTrackBlock->fSize, size);
620 if (pTrackBlock->fSize<sizeof(AliHLTTPCTrackBlock)) {
621 HLTError("inconsistent size of track data block specified in the header: %d", pTrackBlock->fSize);
624 AliHLTExternalTrackParam param;
625 memset(¶m, 0, sizeof(param));
626 param.fAlpha =( pTrackBlock->fSlice + 0.5 ) * TMath::Pi() / 9.0;
627 if (param.fAlpha>TMath::TwoPi()) param.fAlpha-=TMath::TwoPi();
628 param.fX = pTrackBlock->fX;
629 param.fY = pTrackBlock->fY;
630 param.fZ = pTrackBlock->fZ;
631 param.fSinPsi = pTrackBlock->fSinPsi;
632 param.fTgl = pTrackBlock->fTgl;
633 param.fq1Pt = pTrackBlock->fq1Pt;
634 AliHLTGlobalBarrelTrack track(param);
635 if ((iResult=track.CalculateHelixParams(bz))<0) {
636 HLTError("failed to calculate helix params: %d", iResult);
639 if ((iResult=CalculateTrackPoints(track))<0) {
640 HLTError("failed to calculate track points: %d", iResult);
643 clusterBlockSize=pTrackBlock->fSize-sizeof(AliHLTTPCTrackBlock);
644 return sizeof(AliHLTTPCTrackBlock);