* This file is property of and copyright by the ALICE HLT Project *
* ALICE Experiment at CERN, All rights reserved. *
* *
- * Primary Authors: Anders Vestbo <mailto:vestbo@fi.uib.no>, *
- * Constantin Loizides <mailto:loizides@ikf.uni-frankfurt.de> *
- * Jochen Thaeder <mailto:thaeder@kip.uni-heidelberg.de> *
- * for The ALICE Off-line Project. *
+ * Primary Authors: Anders Vestbo, Constantin Loizides, Jochen Thaeder *
+ * Kenneth Aamodt <kenneth.aamodt@student.uib.no> *
+ * for The ALICE HLT Project. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation strictly for non-commercial purposes is hereby granted *
**************************************************************************/
/** @file AliHLTTPCClusterFinder.cxx
- @author Anders Vestbo <mailto:vestbo@fi.uib.no>,
- Constantin Loizides <mailto:loizides@ikf.uni-frankfurt.de>
- Jochen Thaeder <mailto:thaeder@kip.uni-heidelberg.de>
+ @author Anders Vestbo, Constantin Loizides, Jochen Thaeder
+ Kenneth Aamodt kenneth.aamodt@student.uib.no
@date
@brief Cluster Finder for the TPC
*/
#include "AliHLTTPCSpacePointData.h"
#include "AliHLTTPCMemHandler.h"
#include "AliHLTTPCPad.h"
+#include "AliHLTTPCPadArray.h"
#if __GNUC__ >= 3
using namespace std;
//
// The current cluster finder for HLT
// (Based on STAR L3)
-//
+//
+//Basically we have two versions for the cluster finder now.
+//The default version, reads the data pad by pad, and find the
+//clusters as it reads the data. The other version has now been
+//developed to cope with unsorted data. New methods for the unsorted
+//version can be found at the end of the default one i the source file.
+//Currently the new version is only build to manage zero-suppressed data.
+//More functionality will be added later.
+//
// The cluster finder is initialized with the Init function,
// providing the slice and patch information to work on.
//
fMatch(1),
fThreshold(10),
fSignalThreshold(-1),
+ fNSigmaThreshold(0),
fNClusters(0),
fMaxNClusters(0),
fXYErr(0.2),
fZErr(0.3),
- fOccupancyLimit(1.0)
+ fOccupancyLimit(1.0),
+ fPadArray(NULL),
+ fUnsorted(0),
+ fActivePads()
{
//constructor
}
-AliHLTTPCClusterFinder::AliHLTTPCClusterFinder(const AliHLTTPCClusterFinder& src)
- :
- fSpacePointData(NULL),
- fDigitReader(src.fDigitReader),
- fPtr(NULL),
- fSize(src.fSize),
- fDeconvTime(src.fDeconvTime),
- fDeconvPad(src.fDeconvPad),
- fStdout(src.fStdout),
- fCalcerr(src.fCalcerr),
- fRawSP(src.fRawSP),
- fFirstRow(src.fFirstRow),
- fLastRow(src.fLastRow),
- fCurrentRow(src.fCurrentRow),
- fCurrentSlice(src.fCurrentSlice),
- fCurrentPatch(src.fCurrentPatch),
- fMatch(src.fMatch),
- fThreshold(src.fThreshold),
- fSignalThreshold(src.fSignalThreshold),
- fNClusters(src.fNClusters),
- fMaxNClusters(src.fMaxNClusters),
- fXYErr(src.fXYErr),
- fZErr(src.fZErr),
- fOccupancyLimit(src.fOccupancyLimit)
-{
-}
-
-AliHLTTPCClusterFinder& AliHLTTPCClusterFinder::operator=(const AliHLTTPCClusterFinder& src)
-{
- fMatch=src.fMatch;
- fThreshold=src.fThreshold;
- fSignalThreshold=src.fSignalThreshold;
- fOccupancyLimit=src.fOccupancyLimit;
- fXYErr=src.fXYErr;
- fZErr=src.fZErr;
- fDeconvPad=src.fDeconvPad;
- fDeconvTime=src.fDeconvTime;
- fStdout=src.fStdout;
- fCalcerr=src.fCalcerr;
- fRawSP=src.fRawSP;
- fFirstRow=src.fFirstRow;
- fLastRow=src.fLastRow;
- fDigitReader=src.fDigitReader;
- return (*this);
-}
-
AliHLTTPCClusterFinder::~AliHLTTPCClusterFinder()
{
//destructor
void AliHLTTPCClusterFinder::ProcessDigits()
{
+ int iResult=0;
bool readValue = true;
Int_t newRow = 0;
Int_t rowOffset = 0;
AliHLTTPCSignal_t charge=0;
fNClusters = 0;
+ fActivePads.clear();
// initialize block for reading packed data
- fDigitReader->InitBlock(fPtr,fSize,fFirstRow,fLastRow,fCurrentPatch,fCurrentSlice);
+ iResult=fDigitReader->InitBlock(fPtr,fSize,fFirstRow,fLastRow,fCurrentPatch,fCurrentSlice);
+ if (iResult<0) return;
+
readValue = fDigitReader->Next();
// Matthias 08.11.2006 the following return would cause termination without writing the
baseline.SetThreshold(fSignalThreshold);
}
- while ( readValue ){ // Reads through all digits in block
+ while ( readValue!=0 && iResult>=0){ // Reads through all digits in block
+ iResult=0;
if(pad != lastpad){
//This is a new pad
bLastWasFalling = 0;
}
- while(1){ //Loop over time bins of current pad
+ while(iResult>=0){ //Loop over time bins of current pad
// read all the values for one pad at once to calculate the base line
if (pCurrentPad) {
if (!pCurrentPad->IsStarted()) {
}
}
+ if (fActivePads.size()==0 ||
+ fActivePads.back().fRow!=fCurrentRow-rowOffset ||
+ fActivePads.back().fPad!=pad) {
+ AliHLTTPCPadArray::AliHLTTPCActivePads entry;
+ entry.fRow=fCurrentRow-rowOffset;
+ entry.fPad=pad;
+ fActivePads.push_back(entry);
+ }
+
if (pCurrentPad) {
Float_t occupancy=pCurrentPad->GetOccupancy();
//HLTDebug("pad %d occupancy level: %f", pCurrentPad->GetPadNumber(), occupancy);
}
if(time >= AliHLTTPCTransform::GetNTimeBins()){
- HLTWarning("Timebin (%d) out of range (%d)", time, AliHLTTPCTransform::GetNTimeBins());
- break;
+ HLTWarning("Pad %d: Timebin (%d) out of range (%d)", pad, time, AliHLTTPCTransform::GetNTimeBins());
+ iResult=-ERANGE;
}
if(newPad != pad)break; //new pad
if(newTime != time+1) break; //end of sequence
+ if(iResult<0) break;
// pad = newpad; is equal
time = newTime;
void AliHLTTPCClusterFinder::WriteClusters(Int_t nclusters,AliClusterData *list)
{
//write cluster to output pointer
- Int_t thisrow,thissector;
+ Int_t thisrow=-1,thissector=-1;
UInt_t counter = fNClusters;
for(int j=0; j<nclusters; j++)
{
+
+
+
if(!list[j].fFlags) continue; //discard single pad clusters
if(list[j].fTotalCharge < fThreshold) continue; //noise cluster
Float_t ftime2=fZErr*fZErr; //fixed given error
-
-
+ if(fUnsorted){
+ fCurrentRow=list[j].fRow;
+ }
+
if(fCalcerr) { //calc the errors, otherwice take the fixed error
Int_t patch = AliHLTTPCTransform::GetPatch(fCurrentRow);
UInt_t q2=list[j].fTotalCharge*list[j].fTotalCharge;
}
}
#endif
+
+//----------------------------------Methods for the new unsorted way of reading the data --------------------------------
+
+void AliHLTTPCClusterFinder::SetPadArray(AliHLTTPCPadArray * padArray)
+{
+ // see header file for function documentation
+ fPadArray=padArray;
+}
+
+void AliHLTTPCClusterFinder::ReadDataUnsorted(void* ptr,unsigned long size)
+{
+ //set input pointer
+ fPtr = (UChar_t*)ptr;
+ fSize = size;
+
+ fDigitReader->InitBlock(fPtr,fSize,fFirstRow,fLastRow,fCurrentPatch,fCurrentSlice);
+
+ fPadArray->SetDigitReader(fDigitReader);
+
+ if(fSignalThreshold>0){
+ fPadArray->SetSignalThreshold(fSignalThreshold);
+ }
+ if(fNSigmaThreshold>0){
+ fPadArray->SetNSigmaThreshold(fNSigmaThreshold);
+ }
+ fPadArray->ReadData();
+}
+
+void AliHLTTPCClusterFinder::FindClusters()
+{
+ // see header file for function documentation
+ fPadArray->FindClusterCandidates();
+ fPadArray->FindClusters(fMatch);
+
+ AliClusterData * clusterlist = new AliClusterData[fPadArray->fClusters.size()]; //Clusterlist
+ for(unsigned int i=0;i<fPadArray->fClusters.size();i++){
+ clusterlist[i].fTotalCharge = fPadArray->fClusters[i].fTotalCharge;
+ clusterlist[i].fPad = fPadArray->fClusters[i].fPad;
+ clusterlist[i].fPad2 = fPadArray->fClusters[i].fPad2;
+ clusterlist[i].fTime = fPadArray->fClusters[i].fTime;
+ clusterlist[i].fTime2 = fPadArray->fClusters[i].fTime2;
+ clusterlist[i].fMean = fPadArray->fClusters[i].fMean;
+ clusterlist[i].fFlags = fPadArray->fClusters[i].fFlags;
+ clusterlist[i].fChargeFalling = fPadArray->fClusters[i].fChargeFalling;
+ clusterlist[i].fLastCharge = fPadArray->fClusters[i].fLastCharge;
+ clusterlist[i].fLastMergedPad = fPadArray->fClusters[i].fLastMergedPad;
+ clusterlist[i].fRow = fPadArray->fClusters[i].fRowNumber;
+ }
+ WriteClusters(fPadArray->fClusters.size(),clusterlist);
+ delete [] clusterlist;
+ fPadArray->DataToDefault();
+}
+
+Int_t AliHLTTPCClusterFinder::GetActivePads(AliHLTTPCPadArray::AliHLTTPCActivePads* activePads,Int_t maxActivePads)
+{
+ // see header file for function documentation
+ Int_t iResult=0;
+ if (fPadArray) {
+ iResult=fPadArray->GetActivePads((AliHLTTPCPadArray::AliHLTTPCActivePads*)activePads , maxActivePads);
+ } else if ((iResult=fActivePads.size())>0) {
+ if (iResult>maxActivePads) {
+ HLTWarning("target array (%d) not big enough to receive %d active pad descriptors", maxActivePads, iResult);
+ iResult=maxActivePads;
+ }
+ memcpy(activePads, &fActivePads[0], iResult*sizeof(AliHLTTPCPadArray::AliHLTTPCActivePads));
+ }
+
+ return iResult;
+}
+
+void AliHLTTPCClusterFinder::WriteClusters(Int_t nclusters,AliHLTTPCClusters *list)//This is used when using the AliHLTTPCClusters class for cluster data
+{
+ //write cluster to output pointer
+ Int_t thisrow,thissector;
+ UInt_t counter = fNClusters;
+
+ for(int j=0; j<nclusters; j++)
+ {
+ if(!list[j].fFlags) continue; //discard single pad clusters
+ if(list[j].fTotalCharge < fThreshold) continue; //noise cluster
+
+ Float_t xyz[3];
+ Float_t fpad =(Float_t)list[j].fPad / list[j].fTotalCharge;
+ Float_t fpad2=fXYErr*fXYErr; //fixed given error
+ Float_t ftime =(Float_t)list[j].fTime / list[j].fTotalCharge;
+ Float_t ftime2=fZErr*fZErr; //fixed given error
+
+
+ if(fCalcerr) { //calc the errors, otherwice take the fixed error
+ Int_t patch = AliHLTTPCTransform::GetPatch(fCurrentRow);
+ UInt_t q2=list[j].fTotalCharge*list[j].fTotalCharge;
+ Float_t sy2=list[j].fPad2 * list[j].fTotalCharge - list[j].fPad * list[j].fPad;
+ sy2/=q2;
+ if(sy2 < 0) {
+ LOG(AliHLTTPCLog::kError,"AliHLTTPCClusterFinder::WriteClusters","Cluster width")
+ <<"SigmaY2 negative "<<sy2<<" on row "<<fCurrentRow<<" "<<fpad<<" "<<ftime<<ENDLOG;
+ continue;
+ } else {
+ if(!fRawSP){
+ fpad2 = (sy2 + 1./12)*AliHLTTPCTransform::GetPadPitchWidth(patch)*AliHLTTPCTransform::GetPadPitchWidth(patch);
+ if(sy2 != 0){
+ fpad2*=0.108; //constants are from offline studies
+ if(patch<2)
+ fpad2*=2.07;
+ }
+ } else fpad2=sy2; //take the width not the error
+ }
+ Float_t sz2=list[j].fTime2*list[j].fTotalCharge - list[j].fTime*list[j].fTime;
+ sz2/=q2;
+ if(sz2 < 0){
+ LOG(AliHLTTPCLog::kError,"AliHLTTPCClusterFinder::WriteClusters","Cluster width")
+ <<"SigmaZ2 negative "<<sz2<<" on row "<<fCurrentRow<<" "<<fpad<<" "<<ftime<<ENDLOG;
+ continue;
+ } else {
+ if(!fRawSP){
+ ftime2 = (sz2 + 1./12)*AliHLTTPCTransform::GetZWidth()*AliHLTTPCTransform::GetZWidth();
+ if(sz2 != 0) {
+ ftime2 *= 0.169; //constants are from offline studies
+ if(patch<2)
+ ftime2 *= 1.77;
+ }
+ } else ftime2=sz2; //take the width, not the error
+ }
+ }
+ if(fStdout==kTRUE)
+ cout<<"WriteCluster: padrow "<<fCurrentRow<<" pad "<<fpad << " +- "<<fpad2<<" time "<<ftime<<" +- "<<ftime2<<" charge "<<list[j].fTotalCharge<<endl;
+
+ if(!fRawSP){
+ AliHLTTPCTransform::Slice2Sector(fCurrentSlice,fCurrentRow,thissector,thisrow);
+ AliHLTTPCTransform::Raw2Local(xyz,thissector,thisrow,fpad,ftime);
+
+ if(xyz[0]==0) LOG(AliHLTTPCLog::kError,"AliHLTTPCClustFinder","Cluster Finder")
+ <<AliHLTTPCLog::kDec<<"Zero cluster"<<ENDLOG;
+ if(fNClusters >= fMaxNClusters)
+ {
+ LOG(AliHLTTPCLog::kError,"AliHLTTPCClustFinder::WriteClusters","Cluster Finder")
+ <<AliHLTTPCLog::kDec<<"Too many clusters "<<fNClusters<<ENDLOG;
+ return;
+ }
+
+ fSpacePointData[counter].fX = xyz[0];
+ fSpacePointData[counter].fY = xyz[1];
+ fSpacePointData[counter].fZ = xyz[2];
+
+ } else {
+ fSpacePointData[counter].fX = fCurrentRow;
+ fSpacePointData[counter].fY = fpad;
+ fSpacePointData[counter].fZ = ftime;
+ }
+
+ fSpacePointData[counter].fCharge = list[j].fTotalCharge;
+ fSpacePointData[counter].fPadRow = fCurrentRow;
+ fSpacePointData[counter].fSigmaY2 = fpad2;
+ fSpacePointData[counter].fSigmaZ2 = ftime2;
+
+ fSpacePointData[counter].fUsed = kFALSE; // only used / set in AliHLTTPCDisplay
+ fSpacePointData[counter].fTrackN = -1; // only used / set in AliHLTTPCDisplay
+
+ Int_t patch=fCurrentPatch;
+ if(patch==-1) patch=0; //never store negative patch number
+ fSpacePointData[counter].fID = counter
+ +((fCurrentSlice&0x7f)<<25)+((patch&0x7)<<22);//Uli
+
+#ifdef do_mc
+ Int_t trackID[3];
+ GetTrackID((Int_t)rint(fpad),(Int_t)rint(ftime),trackID);
+
+ fSpacePointData[counter].fTrackID[0] = trackID[0];
+ fSpacePointData[counter].fTrackID[1] = trackID[1];
+ fSpacePointData[counter].fTrackID[2] = trackID[2];
+
+ //cout<<"padrow "<<fCurrentRow<<" pad "<<(Int_t)rint(fpad)<<" time "<<(Int_t)rint(ftime)<<" Trackid "<<trackID[0]<<endl;
+#endif
+
+ fNClusters++;
+ counter++;
+ }
+}
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