2 //**************************************************************************
3 //* This file is property of and copyright by the ALICE HLT Project *
4 //* ALICE Experiment at CERN, All rights reserved. *
6 //* Primary Authors: Timur Pocheptsov <Timur.Pocheptsov@cern.ch> *
7 //* for The ALICE HLT Project. *
9 //* Permission to use, copy, modify and distribute this software and its *
10 //* documentation strictly for non-commercial purposes is hereby granted *
11 //* without fee, provided that the above copyright notice appears in all *
12 //* copies and that both the copyright notice and this permission notice *
13 //* appear in the supporting documentation. The authors make no claims *
14 //* about the suitability of this software for any purpose. It is *
15 //* provided "as is" without express or implied warranty. *
16 //**************************************************************************
18 /// @file AliHLTGlobalTrackResidualsComponent.cxx
19 /// @author Timur Pocheptsov
21 /// @brief A histogramming component for plotting the Y and Z track residual
28 #include "AliHLTGlobalTrackResidualsComponent.h"
29 #include "AliHLTTPCClusterDataFormat.h"
30 #include "AliHLTTPCSpacePointData.h"
31 #include "AliHLTGlobalBarrelTrack.h"
32 #include "AliHLTTPCDefinitions.h"
33 #include "AliHLTDataTypes.h"
37 ClassImp(AliHLTGlobalTrackResidualsComponent)
39 //_______________________________________________________________________________________________
41 AliHLTGlobalTrackResidualsComponent::AliHLTGlobalTrackResidualsComponent()
43 fResY("y_residuals", "y residuals", kNBins, -1., 1.),
44 fResZ("z_residuals", "z residuals", kNBins, -1., 1.),
48 fResY.SetMarkerStyle(8);
49 fResY.SetMarkerSize(0.4);
50 fResY.SetXTitle("Y [cm]");
51 fResY.SetDirectory(0);
53 fResZ.SetMarkerStyle(8);
54 fResZ.SetMarkerSize(0.4);
55 fResZ.SetXTitle("Z [cm]");
56 fResZ.SetDirectory(0);
61 //_______________________________________________________________________________________________
62 const char * AliHLTGlobalTrackResidualsComponent::GetComponentID()
65 return "GlobalTrackResiduals";
68 //_______________________________________________________________________________________________
69 void AliHLTGlobalTrackResidualsComponent::GetInputDataTypes(AliHLTComponentDataTypeList& list)
71 //Possible input data types
73 list.push_back(AliHLTTPCDefinitions::fgkClustersDataType|kAliHLTDataOriginTPC);
74 list.push_back(kAliHLTDataTypeTrack|kAliHLTDataOriginTPC);
77 //_______________________________________________________________________________________________
78 AliHLTComponentDataType AliHLTGlobalTrackResidualsComponent::GetOutputDataType()
80 //Output's data type(s).
81 return kAliHLTMultipleDataType;
84 //_______________________________________________________________________________________________
85 int AliHLTGlobalTrackResidualsComponent::GetOutputDataTypes(AliHLTComponentDataTypeList& tgtList)
87 //Output's data type(s).
89 tgtList.push_back(kAliHLTDataTypeTNtuple|kAliHLTDataOriginTPC);
90 tgtList.push_back(kAliHLTDataTypeHistogram|kAliHLTDataOriginTPC);
91 return tgtList.size();
94 //_______________________________________________________________________________________________
95 void AliHLTGlobalTrackResidualsComponent::GetOutputDataSize(unsigned long& constBase, double& inputMultiplier)
97 //Approximate output histograms sizes.
98 constBase = sizeof(TH1F) * 2; //Size of histogram objects.
99 constBase += sizeof(Float_t) * kNBins * 2; //Size of memory, allocated by 1D histograms.
100 //Forget about strings (name and title), just multiply by 2.
105 //_______________________________________________________________________________________________
106 AliHLTComponent* AliHLTGlobalTrackResidualsComponent::Spawn()
108 //Create the component.
109 return new AliHLTGlobalTrackResidualsComponent;
112 //_______________________________________________________________________________________________
113 int AliHLTGlobalTrackResidualsComponent::DoInit(int /*argc*/, const char** /*argv*/)
115 //(Re)Initialize component.
120 //_______________________________________________________________________________________________
121 int AliHLTGlobalTrackResidualsComponent::DoDeinit()
123 //DoNothing will be better name.
127 //_______________________________________________________________________________________________
128 int AliHLTGlobalTrackResidualsComponent::DoEvent(const AliHLTComponentEventData& /*evtData*/, AliHLTComponentTriggerData& /*trigData*/)
130 //Process global barrel tracks and clusters, calculate residuals.
131 if (GetFirstInputBlock(kAliHLTDataTypeSOR) || GetFirstInputBlock(kAliHLTDataTypeEOR))
134 //Read input data, find residuals, fill histgrams.
138 PushBack(&fResY, kAliHLTDataTypeHistogram | kAliHLTDataOriginTPC, 0);
139 PushBack(&fResZ, kAliHLTDataTypeHistogram | kAliHLTDataOriginTPC, 0);
144 //_______________________________________________________________________________________________
145 void AliHLTGlobalTrackResidualsComponent::ProcessBlocks()
147 //1. Read cluster blocks.
149 //2. Loop over merged tracks, calculate residuals, fill histogramms.
150 std::vector<AliHLTGlobalBarrelTrack> ts;
152 Int_t totalTracks = 0;
153 const AliHLTComponentBlockData * i = GetFirstInputBlock(kAliHLTDataTypeTrack|kAliHLTDataOriginTPC);
155 for (; i; i = GetNextInputBlock()) {
156 if (i->fDataType != (kAliHLTDataTypeTrack | kAliHLTDataOriginTPC))
160 AliHLTGlobalBarrelTrack::ConvertTrackDataArray((AliHLTTracksData*)i->fPtr, i->fSize, ts);
162 totalTracks += Int_t(ts.size());
164 std::vector<AliHLTGlobalBarrelTrack>::size_type j = 0, e = ts.size();
165 for (; j != e; ++j) {
168 FillResiduals(ts[j]);
171 HLTDebug("TrackResiduals found %d tracks", totalTracks);
175 //_______________________________________________________________________________________________
176 void AliHLTGlobalTrackResidualsComponent::ReadClusterBlocks()
178 //Loop over blocks, find cluster blocks, extract space points.
181 Int_t totalSpacePoints = 0;
182 const AliHLTComponentBlockData* iter = GetFirstInputBlock(AliHLTTPCDefinitions::fgkClustersDataType);
184 for (; iter; iter = GetNextInputBlock()) {
185 if (iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType)
188 const AliHLTUInt8_t minSlice = AliHLTTPCDefinitions::GetMinSliceNr(*iter);
189 const AliHLTUInt8_t minPartition = AliHLTTPCDefinitions::GetMinPatchNr(*iter);
191 const AliHLTTPCClusterData * clusterData = (AliHLTTPCClusterData *)iter->fPtr;
192 const Int_t nSpacepoint = Int_t(clusterData->fSpacePointCnt);
193 totalSpacePoints += nSpacepoint;
195 //This part is from AliHLTTPCTrackHistoComponent. Logic is not clear -
196 //is it possible that I can have two blocks with same minSlice and minPartition???
197 //and one of them with 0 spacepoint?
199 HLTDebug("TrackResiduals component found %d spacepoints in slice %d partition %d", nSpacepoint, minSlice, minPartition);
200 fClustersArray[minSlice][minPartition] = (AliHLTTPCSpacePointData*)clusterData->fSpacePoints;
201 fNSpacePoints[minSlice][minPartition] = nSpacepoint;
205 HLTDebug("TrackResiduals found %d spacepoints", totalSpacePoints);
210 void Rotate(Float_t* xy, Float_t alpha);
211 Bool_t CmpX(const std::pair<Float_t, UInt_t>& rhs, const std::pair<Float_t, UInt_t>& lhs);
215 //_______________________________________________________________________________________________
216 void AliHLTGlobalTrackResidualsComponent::SortHitsX(const AliHLTGlobalBarrelTrack& gt)
218 //Extract hits' Xs for the track gt, sort them.
221 const UInt_t * hitnum = gt.GetPoints();
222 Int_t prevSlice = -1;
223 Float_t rotAngle = 0.f;
225 for (UInt_t i = 0; i < gt.GetNumberOfPoints(); ++i) {
226 const UInt_t idTrack = hitnum[i];
227 const UInt_t pos = idTrack & 0x3fffff;
228 const Int_t sliceTrack = (idTrack >> 25) & 0x7f;
229 const UInt_t patchTrack = (idTrack >> 22) & 0x7;
231 if (!fClustersArray[sliceTrack][patchTrack])
234 //The following conditional is from the original code.
235 if (sliceTrack > 36 || patchTrack > 5) {
236 HLTError("Corrupted TPC cluster Id: slice %d, patch %d, cluster %d", sliceTrack, patchTrack, idTrack);
240 if (fNSpacePoints[sliceTrack][patchTrack] <= pos) {
241 HLTError("Space point array out of boundaries!");
245 if (sliceTrack != prevSlice) {
247 prevSlice < sliceTrack ? rotAngle += 0.349066 : rotAngle -= 0.349066;
248 prevSlice = sliceTrack;
251 Float_t clusterXY[] = {fClustersArray[sliceTrack][patchTrack][pos].fX,
252 fClustersArray[sliceTrack][patchTrack][pos].fY};
254 Rotate(clusterXY, rotAngle);
256 fSortedX.push_back(std::pair<Float_t, UInt_t>(clusterXY[0], i));
259 std::sort(fSortedX.begin(), fSortedX.end(), CmpX);
262 //_______________________________________________________________________________________________
263 void AliHLTGlobalTrackResidualsComponent::FillResiduals(const AliHLTGlobalBarrelTrack& gt)
265 //Find residuals using clusters and helix approximation.
266 const UInt_t * hitnum = gt.GetPoints();
267 AliExternalTrackParam track(gt);
268 Int_t prevSlice = -1;
269 Float_t rotAngle = 0.f;
271 std::vector<std::pair<Float_t, UInt_t> >::size_type i = 0;
272 for (; i < fSortedX.size(); ++i) {
273 const UInt_t idTrack = hitnum[fSortedX[i].second];
274 const UInt_t pos = idTrack & 0x3fffff;
275 const Int_t sliceTrack = (idTrack >> 25) & 0x7f;
276 const UInt_t patchTrack = (idTrack >> 22) & 0x7;
278 if(!fClustersArray[sliceTrack][patchTrack])
281 //The following conditionals are from the original code.
282 if (sliceTrack > 36 || patchTrack > 5) {
283 HLTError("Corrupted TPC cluster Id: slice %d, patch %d, cluster %d", sliceTrack, patchTrack, idTrack);
287 if (fNSpacePoints[sliceTrack][patchTrack] <= pos) {
288 HLTError("Space point array out of boundaries!");
292 if (sliceTrack != prevSlice) {
294 prevSlice < sliceTrack ? rotAngle += 0.349066 : rotAngle -= 0.349066;
295 prevSlice = sliceTrack;
298 if (track.PropagateTo(fSortedX[i].first, GetBz())) {
299 Float_t clusterXYZ[] = {fClustersArray[sliceTrack][patchTrack][pos].fX,
300 fClustersArray[sliceTrack][patchTrack][pos].fY,
301 fClustersArray[sliceTrack][patchTrack][pos].fZ};
302 Rotate(clusterXYZ, rotAngle);
304 fResY.Fill(clusterXYZ[1] - track.GetY());
305 fResZ.Fill(clusterXYZ[2] - track.GetZ());
311 //_______________________________________________________________________________________________
312 void AliHLTGlobalTrackResidualsComponent::CleanClusters()
314 //Set pointers and counters to zero.
315 for (int i = 0; i < 36; ++i) {
316 for (int j = 0; j < 6; ++j) {
317 fClustersArray[i][j] = 0;
318 fNSpacePoints[i][j] = 0;
323 //_______________________________________________________________________________________________
324 void AliHLTGlobalTrackResidualsComponent::ResetHistograms()
326 //Set default values.
330 fResY.SetBins(kNBins, -1., 1.);
331 fResZ.SetBins(kNBins, -1., 1.);
337 //_______________________________________________________________________________________________
338 void Rotate(Float_t* xy, Float_t alpha)
340 //From hits's local to track's _local_.
341 const Float_t cosA = TMath::Cos(alpha);
342 const Float_t sinA = TMath::Sin(alpha);
343 const Float_t xPrim = xy[0] * cosA - xy[1] * sinA;
344 const Float_t yPrim = xy[0] * sinA + xy[1] * cosA;
349 //_______________________________________________________________________________________________
350 Bool_t CmpX(const std::pair<Float_t, UInt_t>& rhs, const std::pair<Float_t, UInt_t>& lhs)
352 //Sort "hits" along x.
353 return rhs.first < lhs.first;