1 // $Id: AliHLTCaloClusterAnalyser.cxx 35107 2009-09-30 01:45:06Z phille $
3 /**************************************************************************
4 * This file is property of and copyright by the ALICE HLT Project *
5 * All rights reserved. *
7 * Primary Authors: Oystein Djuvsland *
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 **************************************************************************/
19 * @file AliHLTCaloClusterAnalyser.cxx
20 * @author Oystein Djuvsland
22 * @brief Cluster analyser for Calo HLT
25 // see header file for class documentation
27 // refer to README to build package
29 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
31 #include "AliHLTCaloClusterAnalyser.h"
32 #include "AliHLTCaloRecPointHeaderStruct.h"
33 #include "AliHLTCaloRecPointDataStruct.h"
34 #include "AliHLTCaloClusterDataStruct.h"
35 //#include "AliHLTCaloPhysicsAnalyzer.h"
36 #include "AliPHOSGeoUtils.h"
37 #include "AliESDCaloCluster.h"
41 ClassImp(AliHLTCaloClusterAnalyser);
43 AliHLTCaloClusterAnalyser::AliHLTCaloClusterAnalyser() :
48 fCaloClusterDataPtr(0),
49 fCaloClusterHeaderPtr(0),
55 fHaveDistanceToBadChannel(false)
57 //See header file for documentation
60 // fAnalyzerPtr = new AliHLTCaloPhysicsAnalyzer();
61 // fPHOSGeometry = AliPHOSGeometry::GetInstance("noCPV");
62 fPHOSGeometry = new AliPHOSGeoUtils("PHOS", "noCPV");
65 AliHLTCaloClusterAnalyser::~AliHLTCaloClusterAnalyser()
70 AliHLTCaloClusterAnalyser::SetCaloClusterDataPtr(AliHLTCaloClusterDataStruct *caloClusterDataPtr)
72 //see header file for documentation
73 fCaloClusterDataPtr = caloClusterDataPtr;
76 AliHLTCaloClusterAnalyser::SetRecPointDataPtr(AliHLTCaloRecPointHeaderStruct *recPointDataPtr)
78 fNRecPoints = recPointDataPtr->fNRecPoints;
79 fRecPointDataPtr = reinterpret_cast<AliHLTCaloRecPointDataStruct*>(reinterpret_cast<Char_t*>(recPointDataPtr)+sizeof(AliHLTCaloRecPointHeaderStruct));
83 AliHLTCaloClusterAnalyser::CalculateCenterOfGravity()
85 //see header file for documentation
92 AliHLTCaloDigitDataStruct *digit = 0;
93 //AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
95 AliHLTCaloRecPointDataStruct *recPoint = fRecPointDataPtr;
99 for(Int_t iRecPoint=0; iRecPoint < fNRecPoints; iRecPoint++)
101 digit = &(recPoint->fDigits);
102 for(iDigit = 0; iDigit < recPoint->fMultiplicity; iDigit++)
107 // cout << "COG digits (x:z:E:time): " << xi << " : " << zi << " : " << digit->fEnergy << " : " << digit->fTime << endl;
108 if (recPoint->fAmp > 0 && digit->fEnergy > 0)
110 Float_t w = TMath::Max( 0., fLogWeight + TMath::Log( digit->fEnergy / recPoint->fAmp ) ) ;
120 recPoint->fX = x/wtot ;
121 recPoint->fZ = z/wtot ;
127 recPoint = reinterpret_cast<AliHLTCaloRecPointDataStruct*>(digit);
134 AliHLTCaloClusterAnalyser::CalculateRecPointMoments()
136 //See header file for documentation
141 AliHLTCaloClusterAnalyser::CalculateClusterMoments(AliHLTCaloRecPointDataStruct */*recPointPtr*/, AliHLTCaloClusterDataStruct* /*clusterPtr*/)
143 //See header file for documentation
149 AliHLTCaloClusterAnalyser::DeconvoluteClusters()
151 //See header file for documentation
156 AliHLTCaloClusterAnalyser::CreateClusters(UInt_t availableSize, UInt_t& totSize)
158 //See header file for documentation
160 UInt_t maxClusterSize = sizeof(AliHLTCaloClusterDataStruct) + (6 << 7); //Reasonable estimate... (6 = sizeof(Short_t) + sizeof(Float_t)
162 AliHLTCaloRecPointDataStruct* recPointPtr = fRecPointDataPtr;
163 AliHLTCaloDigitDataStruct* digitPtr = &(recPointPtr->fDigits);
165 AliHLTCaloClusterDataStruct* caloClusterPtr = fCaloClusterDataPtr;
166 UShort_t* cellIDPtr = &(caloClusterPtr->fCellsAbsId);
167 Float_t* cellAmpFracPtr = &(caloClusterPtr->fCellsAmpFraction);
172 for(Int_t i = 0; i < fNRecPoints; i++) //TODO needs fix when we start unfolding (number of clusters not necessarily same as number of recpoints gotten from the clusterizer
175 if(availableSize < (totSize + maxClusterSize))
177 return -1; //Might get out of buffer, exiting
179 // cout << "Local Position (x:z:module): " << recPointPtr->fX << " : "<< recPointPtr->fZ << " : " << recPointPtr->fModule << endl;
180 fPHOSGeometry->Local2Global(recPointPtr->fModule, recPointPtr->fX, recPointPtr->fZ, globalPos);
181 // cout << "Global Position (x:y:z): " << globalPos[0] << " : "<< globalPos[1] << " : " << globalPos[2] << endl << endl;
183 caloClusterPtr->fGlobalPos[0] = globalPos[0];
184 caloClusterPtr->fGlobalPos[1] = globalPos[1];
185 caloClusterPtr->fGlobalPos[2] = globalPos[2];
187 caloClusterPtr->fNCells = recPointPtr->fMultiplicity;
189 cellIDPtr = &(caloClusterPtr->fCellsAbsId);
190 cellAmpFracPtr = &(caloClusterPtr->fCellsAmpFraction);
192 for(UInt_t j = 0; j < caloClusterPtr->fNCells; j++)
194 fPHOSGeometry->RelPosToAbsId((Int_t)(recPointPtr->fModule), (double)(digitPtr->fX), (double)(digitPtr->fZ), id);
196 *cellAmpFracPtr = digitPtr->fEnergy/recPointPtr->fAmp;
198 cellIDPtr = reinterpret_cast<UShort_t*>(reinterpret_cast<char*>(cellAmpFracPtr) + sizeof(Float_t));
199 cellAmpFracPtr = reinterpret_cast<Float_t*>(reinterpret_cast<char*>(cellIDPtr) + sizeof(Short_t));
202 caloClusterPtr->fEnergy = recPointPtr->fAmp;
206 FitCluster(recPointPtr);
210 caloClusterPtr->fDispersion = 0;
211 caloClusterPtr->fFitQuality = 0;
212 caloClusterPtr->fM20 = 0;
213 caloClusterPtr->fM02 = 0;
218 caloClusterPtr->fEmcCpvDistance = GetCPVDistance(recPointPtr);
222 caloClusterPtr->fEmcCpvDistance = -1;
226 DoParticleIdentification(caloClusterPtr);
230 for(Int_t k = 0; k < AliPID::kSPECIESN; k++)
232 caloClusterPtr->fPID[k] = 0;
235 if(fHaveDistanceToBadChannel)
237 caloClusterPtr->fDistanceToBadChannel = GetDistanceToBadChannel(caloClusterPtr);
241 caloClusterPtr->fDistanceToBadChannel = -1;
244 caloClusterPtr->fClusterType = (AliESDCaloCluster::kPHOSCluster);
245 // totSize += sizeof(AliHLTCaloClusterDataStruct) + (caloClusterPtr->fNCells)*(sizeof(Short_t) +sizeof(Float_t)-1);
246 totSize += sizeof(AliHLTCaloClusterDataStruct) + (caloClusterPtr->fNCells-1)*(sizeof(Short_t) + sizeof(Float_t));
248 // caloClusterPtr = reinterpret_cast<AliHLTCaloClusterDataStruct*>(cellAmpFracPtr);
249 caloClusterPtr = reinterpret_cast<AliHLTCaloClusterDataStruct*>(cellIDPtr);
250 recPointPtr = reinterpret_cast<AliHLTCaloRecPointDataStruct*>(digitPtr);
251 digitPtr = &(recPointPtr->fDigits);
253 // cout << "CA: Energy End: " << fCaloClusterDataPtr->fEnergy << endl;
254 //cout << "CA totSize: " << totSize << endl;