// AliITSClusterFinderSDD AliITSClusterFinderV2 //
////////////////////////////////////////////////////////////////////////////
+#include "AliRun.h"
#include "AliITSClusterFinder.h"
#include "AliITSRecPoint.h"
#include "AliITSdigit.h"
#include "AliITSDetTypeRec.h"
#include "AliITSMap.h"
+#include "AliITSgeomTGeo.h"
+#include <TParticle.h>
+#include "AliMC.h"
ClassImp(AliITSClusterFinder)
+extern AliRun *gAlice;
+
//----------------------------------------------------------------------
AliITSClusterFinder::AliITSClusterFinder():
TObject(),
-fDebug(0),
fModule(0),
fDigits(0),
fNdigits(0),
fDetTypeRec(0),
fClusters(0),
-fNRawClusters(0),
fMap(0),
-fNperMax(0),
-fDeclusterFlag(0),
-fClusterSize(0),
-fNPeaks(-1){
+fNPeaks(-1),
+fNModules(AliITSgeomTGeo::GetNModules()),
+fEvent(0){
// default cluster finder
// Input:
// none.
//----------------------------------------------------------------------
AliITSClusterFinder::AliITSClusterFinder(AliITSDetTypeRec* dettyp):
TObject(),
-fDebug(0),
fModule(0),
fDigits(0),
fNdigits(0),
+fDetTypeRec(dettyp),
fClusters(0),
-fNRawClusters(0),
fMap(0),
-fNperMax(0),
-fDeclusterFlag(0),
-fClusterSize(0),
-fNPeaks(-1){
+fNPeaks(-1),
+fNModules(AliITSgeomTGeo::GetNModules()),
+fEvent(0){
+ // default cluster finder
// Standard constructor for cluster finder
// Input:
// AliITSsegmentation *seg The segmentation class to be used
// Return:
// A Standard constructed AliITSCulsterFinder
- SetNperMax();
- SetClusterSize();
- SetDeclusterFlag();
- fDetTypeRec = dettyp;
}
//----------------------------------------------------------------------
AliITSClusterFinder::AliITSClusterFinder(AliITSDetTypeRec* dettyp,
TClonesArray *digits):
TObject(),
-fDebug(0),
fModule(0),
fDigits(digits),
fNdigits(0),
fDetTypeRec(dettyp),
fClusters(0),
-fNRawClusters(0),
fMap(0),
-fNperMax(0),
-fDeclusterFlag(0),
-fClusterSize(0),
-fNPeaks(-1){
+fNPeaks(-1),
+fNModules(AliITSgeomTGeo::GetNModules()),
+fEvent(0){
+ // default cluster finder
// Standard + cluster finder constructor
// Input:
// AliITSsegmentation *seg The segmentation class to be used
// A Standard constructed AliITSCulsterFinder
fNdigits = fDigits->GetEntriesFast();
- SetNperMax();
- SetClusterSize();
- SetDeclusterFlag();
}
+
//______________________________________________________________________
-AliITSClusterFinder::AliITSClusterFinder(const AliITSClusterFinder &source) : TObject(source) {
+AliITSClusterFinder::AliITSClusterFinder(const AliITSClusterFinder &source) : TObject(source),
+fModule(source.fModule),
+fDigits(),
+fNdigits(source.fNdigits),
+fDetTypeRec(),
+fClusters(),
+fMap(),
+fNPeaks(source.fNPeaks),
+fNModules(source.fNModules),
+fEvent(source.fEvent) {
// Copy constructor
// Copies are not allowed. The method is protected to avoid misuse.
- Fatal("AliITSClusterFinder","Copy constructor not allowed\n");
+ AliError("Copy constructor not allowed\n");
}
+
//______________________________________________________________________
-AliITSClusterFinder& AliITSClusterFinder::operator=(const AliITSClusterFinder& /* source */){
+//AliITSClusterFinder& AliITSClusterFinder::operator=(const AliITSClusterFinder& /* source */){
// Assignment operator
// Assignment is not allowed. The method is protected to avoid misuse.
- Fatal("= operator","Assignment operator not allowed\n");
- return *this;
-}
+// Fatal("= operator","Assignment operator not allowed\n");
+// return *this;
+//}
//----------------------------------------------------------------------
AliITSClusterFinder::~AliITSClusterFinder(){
fMap = 0;
fDigits = 0;
fNdigits = 0;
- fNRawClusters = 0;
- fNperMax = 0;
- fDeclusterFlag= 0;
- fClusterSize = 0;
fNPeaks = 0;
fDetTypeRec = 0;
}
//__________________________________________________________________________
void AliITSClusterFinder::InitGeometry(){
-
-
- //Initialisation of ITS geometry
- if(!fDetTypeRec->GetITSgeom()) {
- Error("InitGeometry","ITS geom is null!");
- return;
- }
- Int_t mmax=fDetTypeRec->GetITSgeom()->GetIndexMax();
- if (mmax>2200) {
- Fatal("AliITSClusterFinder","Too many ITS subdetectors !");
- }
- Int_t m;
- for (m=0; m<mmax; m++) {
- Int_t lay,lad,det; fDetTypeRec->GetITSgeom()->GetModuleId(m,lay,lad,det);
- Float_t x,y,z; fDetTypeRec->GetITSgeom()->GetTrans(lay,lad,det,x,y,z);
- Double_t rot[9]; fDetTypeRec->GetITSgeom()->GetRotMatrix(lay,lad,det,rot);
- Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
- Double_t ca=TMath::Cos(alpha), sa=TMath::Sin(alpha);
- fYshift[m] = x*ca + y*sa;
- fZshift[m] = (Double_t)z;
- fNdet[m] = (lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay) + (det-1);
+ //
+ // Initialisation of ITS geometry
+ //
+ Int_t mmax=AliITSgeomTGeo::GetNModules();
+ for (Int_t m=0; m<mmax; m++) {
+ Int_t lay,lad,det; AliITSgeomTGeo::GetModuleId(m,lay,lad,det);
+ fNdet[m] = (lad-1)*AliITSgeomTGeo::GetNDetectors(lay) + (det-1);
fNlayer[m] = lay-1;
}
}
-//----------------------------------------------------------------------
-void AliITSClusterFinder::AddCluster(Int_t branch, AliITSRawCluster *c){
- // Add a raw cluster copy to the list
- // Input:
- // Int_t branch The branch to which the cluster is to be added to
- // AliITSRawCluster *c The cluster to be added to the array of clusters
- // Output:
- // none.
- // Return:
- // none.
-
- if(!fDetTypeRec) {
- Error("AddCluster","fDetTypeRec is null!");
- return;
- }
- fDetTypeRec->AddCluster(branch,c);
- fNRawClusters++;
-}
-//----------------------------------------------------------------------
-void AliITSClusterFinder::AddCluster(Int_t branch, AliITSRawCluster *c,
- AliITSRecPoint &rp){
- // Add a raw cluster copy to the list and the RecPoint
- // Input:
- // Int_t branch The branch to which the cluster is to be added to
- // AliITSRawCluster *c The cluster to be added to the array of clusters
- // AliITSRecPoint &rp The RecPoint to be added to the array of RecPoints
- // Output:
- // none.
- // Return:
- // none.
- if(!fDetTypeRec) {
- Error("AddCluster","fDetTypeRec is null!");
- return;
- }
-
- fDetTypeRec->AddCluster(branch,c);
- fNRawClusters++;
- fDetTypeRec->AddRecPoint(rp);
-
-}
-/*
-//______________________________________________________________________
-void AliITSClusterFinder::CheckLabels(Int_t lab[3]) {
- //------------------------------------------------------------
- // Tries to find mother's labels
- //------------------------------------------------------------
- if(lab[0]<0 && lab[1]<0 && lab[2]<0) return; // In case of no labels just exit
- // Check if simulation
- AliMC* mc = gAlice->GetMCApp();
- if(!mc)return;
-
- Int_t ntracks = mc->GetNtrack();
- for (Int_t i=0;i<3;i++){
- Int_t label = lab[i];
- if (label>=0 && label<ntracks) {
- TParticle *part=(TParticle*)mc->Particle(label);
- if (part->P() < 0.005) {
- Int_t m=part->GetFirstMother();
- if (m<0) {
- continue;
- }
- if (part->GetStatusCode()>0) {
- continue;
- }
- lab[i]=m;
- }
- }
- }
-
-}
-*/
-//______________________________________________________________________
-void AliITSClusterFinder::FindRawClusters(Int_t module){
- // Default Cluster finder.
- // Input:
- // Int_t module Module number for which culster are to be found.
- // Output:
- // none.
- // Return:
- // none.
- const Int_t kelms = 10;
- Int_t ndigits = fDigits->GetEntriesFast();
- TObjArray *digs = new TObjArray(ndigits);
- TObjArray *clusts = new TObjArray(ndigits); // max # cluster
- TObjArray *clust0=0; // A spacific cluster of digits
- TObjArray *clust1=0; // A spacific cluster of digits
- AliITSdigit *dig=0; // locat pointer to a digit
- Int_t i=0,nc=0,j[4],k,k2=0;
-
- // Copy all digits for this module into a local TObjArray.
- for(i=0;i<ndigits;i++) digs->AddAt(new AliITSdigit(*(GetDigit(i))),i);
- digs->Sort();
- // First digit is a cluster.
- i = 0;
- nc = 0;
- clusts->AddAt(new TObjArray(kelms),nc);
- clust0 = (TObjArray*)(clusts->At(nc));
- clust0->AddAtFree(digs->At(i)); // move owner ship from digs to clusts
- nc++;
- for(i=1;i<ndigits;i++){
- if(IsNeighbor(digs,i,j)){
- dig = (AliITSdigit*)(digs->At(j[0]));
- // Add to existing cluster. Find which cluster this digis
- for(k=0;k<nc;k++){
- clust0 = ((TObjArray*)(clusts->At(k)));
- if(clust0->IndexOf(dig)>=0) break;
- } // end for k
- if(k>=nc){
- Fatal("FindRawClusters","Digit not found as expected");
- } // end if
- if(j[1]>=0){
- dig = (AliITSdigit*)(digs->At(j[1]));
- // Add to existing cluster. Find which cluster this digis
- for(k2=0;k2<nc;k2++){
- clust1 = ((TObjArray*)(clusts->At(k2)));
- if(clust1->IndexOf(dig)>=0) break;
- } // end for k2
- if(k2>=nc){
- Fatal("FindRawClusters","Digit not found as expected");
- } // end if
- } // end if j[1]>=0
- // Found cluster with neighboring digits add this one to it.
- if(clust0==clust1){ // same cluster
- clust0->AddAtFree(digs->At(i));
- clust0 = 0; // finished with cluster. zero for safty
- clust1 = 0; // finished wit hcluster. zero for safty
- }else{ // two different clusters which need to be merged.
- clust0->AddAtFree(digs->At(i)); // Add digit to this cluster.
- for(k=0;k<clust1->GetEntriesFast();k++){
- // move clust1 into clust0
- //move digit to this cluster
- clust0->AddAtFree(clust1->At(k));
- clust1->AddAt(0,k); // zero this one
- } // end for k
- delete clust1;
- clusts->AddAt(0,k2); // zero array of clusters element clust1
- clust0 = 0; // finished with cluster. zero for safty
- clust1 = 0; // finished wit hcluster. zero for safty
- } // end if clust0==clust1
- }else{// New cluster
- clusts->AddAt(new TObjArray(kelms),nc);
- clust0 = ((TObjArray*)(clusts->At(nc)));
- // move owner ship from digs to clusts
- clust0->AddAtFree(digs->At(i));
- clust0 = 0; // finished with cluster. zero for safty
- nc++;
- } // End if IsNeighbor
- } // end for i
- // There are now nc clusters in clusts. Each element of clust is an
- // array of digits which are clustered together.
-
- // For each cluster call detector specific CreateRecPoints
- for(i=0;i<nc;i++) CreateRecPoints((TObjArray*)(clusts->At(i)),module);
-
- // clean up at the end.
- for(i=0;i<nc;i++){
- clust0 =(TObjArray*)(clusts->At(i));
- // Digits deleted below, so zero this TObjArray
- for(k=0;k<clust0->GetEntriesFast();k++) clust0->AddAt(0,k);
- delete clust0; // Delete this TObjArray
- clusts->AddAt(0,i); // Contents deleted above, so zero it.
- } // end for i
- delete clusts; // Delete this TObjArray/
- // Delete the digits then the TObjArray which containted them.
- for(i=0;i<ndigits;i++) delete ((AliITSdigit*)(digs->At(i)));
- delete digs;
-}
//______________________________________________________________________
Bool_t AliITSClusterFinder::IsNeighbor(TObjArray *digs,Int_t i,Int_t n[])const{
// Locagical function which checks to see if digit i has a neighbor.
// Return:
// none.
- *os << fDebug<<",";
*os << fModule<<",";
*os << fNdigits<<",";
- *os << fNRawClusters<<",";
- *os << fNperMax<<",";
- *os << fDeclusterFlag<<",";
- *os << fClusterSize<<",";
*os << fNPeaks<<endl;
}
-/*
-//______________________________________________________________________
-void AliITSClusterFinder::RecPoints2Clusters
-(const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
- //------------------------------------------------------------
- // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
- // subdetector indexed by idx
- //------------------------------------------------------------
- if(!fDetTypeRec->GetITSgeom()) {
- Error("RecPoints2Clusters","ITS geom is null!");
- return;
- }
- Int_t lastSPD1=fDetTypeRec->GetITSgeom()->GetModuleIndex(2,1,1)-1;
- TClonesArray &cl=*clusters;
- Int_t ncl=points->GetEntriesFast();
- for (Int_t i=0; i<ncl; i++) {
- AliITSRecPoint *p = (AliITSRecPoint *)points->UncheckedAt(i);
- Float_t lp[5];
- lp[0]=-(-p->GetX()+fYshift[idx]); if (idx<=lastSPD1) lp[0]*=-1; //SPD1
- lp[1]= -p->GetZ()+fZshift[idx];
- lp[2]=p->GetSigmaX2();
- lp[3]=p->GetSigmaZ2();
- lp[4]=p->GetQ()*36./23333.; //electrons -> ADC
- Int_t lab[4];
- lab[0]=p->GetLabel(0); lab[1]=p->GetLabel(1); lab[2]=p->GetLabel(2);
- lab[3]=fNdet[idx];
- CheckLabels(lab);
- Int_t dummy[3]={0,0,0};
- new (cl[i]) AliITSclusterV2(lab,lp, dummy);
- }
-}
-*/
//______________________________________________________________________
void AliITSClusterFinder::Read(istream *is) {
//Standard input for this class
// Return:
// none.
- *is >> fDebug;
*is >> fModule;
*is >> fNdigits;
- *is >> fNRawClusters;
- *is >> fNperMax;
- *is >> fDeclusterFlag;
- *is >> fClusterSize;
*is >> fNPeaks;
}
//______________________________________________________________________
source.Read(&is);
return is;
}
-/*
-void AliITSClusterFinder::RecPoints2Clusters
-(const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
+//______________________________________________________________________
+void AliITSClusterFinder::CheckLabels2(Int_t lab[10]) {
+ //------------------------------------------------------------
+ // Tries to find mother's labels
+ //------------------------------------------------------------
+ AliRunLoader *rl = AliRunLoader::Instance();
+ TTree *trK=(TTree*)rl->TreeK();
+
+ if(trK){
+ Int_t nlabels =0;
+ for (Int_t i=0;i<10;i++) if (lab[i]>=0) nlabels++;
+ if(nlabels == 0) return; // In case of no labels just exit
+
+
+ Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
+
+ for (Int_t i=0;i<10;i++){
+ Int_t label = lab[i];
+ if (label>=0 && label<ntracks) {
+ TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
+
+ if (part->P() < 0.02) {
+ Int_t m=part->GetFirstMother();
+ if (m<0) {
+ continue;
+ }
+ if (part->GetStatusCode()>0) {
+ continue;
+ }
+ lab[i]=m;
+ }
+ else
+ if (part->P() < 0.12 && nlabels>3) {
+ lab[i]=-2;
+ nlabels--;
+ }
+ }
+ else{
+ if ( (label>ntracks||label <0) && nlabels>3) {
+ lab[i]=-2;
+ nlabels--;
+ }
+ }
+ }
+ if (nlabels>3){
+ for (Int_t i=0;i<10;i++){
+ if (nlabels>3){
+ Int_t label = lab[i];
+ if (label>=0 && label<ntracks) {
+ TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
+ if (part->P() < 0.1) {
+ lab[i]=-2;
+ nlabels--;
+ }
+ }
+ }
+ }
+ }
+
+ //compress labels -- if multi-times the same
+ Int_t lab2[10];
+ for (Int_t i=0;i<10;i++) lab2[i]=-2;
+ for (Int_t i=0;i<10 ;i++){
+ if (lab[i]<0) continue;
+ for (Int_t j=0;j<10 &&lab2[j]!=lab[i];j++){
+ if (lab2[j]<0) {
+ lab2[j]= lab[i];
+ break;
+ }
+ }
+ }
+ for (Int_t j=0;j<10;j++) lab[j]=lab2[j];
+
+ }
+}
+
+//______________________________________________________________________
+void AliITSClusterFinder::AddLabel(Int_t lab[10], Int_t label) {
+ //add label to the cluster
+ AliRunLoader *rl = AliRunLoader::Instance();
+ TTree *trK=(TTree*)rl->TreeK();
+ if(trK){
+ if(label<0) return; // In case of no label just exit
+
+ Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
+ if (label>ntracks) return;
+ for (Int_t i=0;i<10;i++){
+ // if (label<0) break;
+ if (lab[i]==label) break;
+ if (lab[i]<0) {
+ lab[i]= label;
+ break;
+ }
+ }
+ }
+}
+
+
+//______________________________________________________________________
+void AliITSClusterFinder::
+FindCluster(Int_t k,Int_t maxz,AliBin *bins,Int_t &n,Int_t *idx) {
+ //------------------------------------------------------------
+ // returns an array of indices of digits belonging to the cluster
+ // (needed when the segmentation is not regular)
+ //------------------------------------------------------------
+ if (n<200) idx[n++]=bins[k].GetIndex();
+ bins[k].Use();
+
+ if (bins[k-maxz].IsNotUsed()) FindCluster(k-maxz,maxz,bins,n,idx);
+ if (bins[k-1 ].IsNotUsed()) FindCluster(k-1 ,maxz,bins,n,idx);
+ if (bins[k+maxz].IsNotUsed()) FindCluster(k+maxz,maxz,bins,n,idx);
+ if (bins[k+1 ].IsNotUsed()) FindCluster(k+1 ,maxz,bins,n,idx);
+ /*
+ if (bins[k-maxz-1].IsNotUsed()) FindCluster(k-maxz-1,maxz,bins,n,idx);
+ if (bins[k-maxz+1].IsNotUsed()) FindCluster(k-maxz+1,maxz,bins,n,idx);
+ if (bins[k+maxz-1].IsNotUsed()) FindCluster(k+maxz-1,maxz,bins,n,idx);
+ if (bins[k+maxz+1].IsNotUsed()) FindCluster(k+maxz+1,maxz,bins,n,idx);
+ */
+}
+
+//______________________________________________________________________
+Bool_t AliITSClusterFinder::IsMaximum(Int_t k,Int_t max,const AliBin *bins) {
+ //------------------------------------------------------------
+ //is this a local maximum ?
+ //------------------------------------------------------------
+ UShort_t q=bins[k].GetQ();
+ if (q==1023) return kFALSE;
+ if (bins[k-max].GetQ() > q) return kFALSE;
+ if (bins[k-1 ].GetQ() > q) return kFALSE;
+ if (bins[k+max].GetQ() > q) return kFALSE;
+ if (bins[k+1 ].GetQ() > q) return kFALSE;
+ if (bins[k-max-1].GetQ() > q) return kFALSE;
+ if (bins[k+max-1].GetQ() > q) return kFALSE;
+ if (bins[k+max+1].GetQ() > q) return kFALSE;
+ if (bins[k-max+1].GetQ() > q) return kFALSE;
+ return kTRUE;
+}
+
+//______________________________________________________________________
+void AliITSClusterFinder::
+FindPeaks(Int_t k,Int_t max,AliBin *b,Int_t *idx,UInt_t *msk,Int_t& n) {
//------------------------------------------------------------
- // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
- // subdetector indexed by idx
+ //find local maxima
//------------------------------------------------------------
- TClonesArray &cl=*clusters;
- Int_t ncl=points->GetEntriesFast();
- for (Int_t i=0; i<ncl; i++) {
- AliITSRecPoint *p = (AliITSRecPoint *)points->UncheckedAt(i);
- Float_t lp[5];
- lp[0]=-(-p->GetX()+fYshift[idx]); if (idx<=fLastSPD1) lp[0]*=-1; //SPD1
- lp[1]= -p->GetZ()+fZshift[idx];
- lp[2]=p->GetSigmaX2();
- lp[3]=p->GetSigmaZ2();
- lp[4]=p->GetQ()*36./23333.; //electrons -> ADC
- Int_t lab[4];
- lab[0]=p->GetLabel(0); lab[1]=p->GetLabel(1); lab[2]=p->GetLabel(2);
- lab[3]=fNdet[idx];
- CheckLabels(lab);
- Int_t dummy[3]={0,0,0};
- new (cl[i]) AliITSclusterV2(lab,lp, dummy);
- }
-}
-*/
+ if (n<31)
+ if (IsMaximum(k,max,b)) {
+ idx[n]=k; msk[n]=(2<<n);
+ n++;
+ }
+ b[k].SetMask(0);
+ if (b[k-max].GetMask()&1) FindPeaks(k-max,max,b,idx,msk,n);
+ if (b[k-1 ].GetMask()&1) FindPeaks(k-1 ,max,b,idx,msk,n);
+ if (b[k+max].GetMask()&1) FindPeaks(k+max,max,b,idx,msk,n);
+ if (b[k+1 ].GetMask()&1) FindPeaks(k+1 ,max,b,idx,msk,n);
+}
+
+//______________________________________________________________________
+void AliITSClusterFinder::
+MarkPeak(Int_t k, Int_t max, AliBin *bins, UInt_t m) {
+ //------------------------------------------------------------
+ //mark this peak
+ //------------------------------------------------------------
+ UShort_t q=bins[k].GetQ();
+
+ bins[k].SetMask(bins[k].GetMask()|m);
+
+ if (bins[k-max].GetQ() <= q)
+ if ((bins[k-max].GetMask()&m) == 0) MarkPeak(k-max,max,bins,m);
+ if (bins[k-1 ].GetQ() <= q)
+ if ((bins[k-1 ].GetMask()&m) == 0) MarkPeak(k-1 ,max,bins,m);
+ if (bins[k+max].GetQ() <= q)
+ if ((bins[k+max].GetMask()&m) == 0) MarkPeak(k+max,max,bins,m);
+ if (bins[k+1 ].GetQ() <= q)
+ if ((bins[k+1 ].GetMask()&m) == 0) MarkPeak(k+1 ,max,bins,m);
+}
+
+//______________________________________________________________________
+void AliITSClusterFinder::
+MakeCluster(Int_t k,Int_t max,AliBin *bins,UInt_t m,AliITSRecPoint &c) {
+ //------------------------------------------------------------
+ //make cluster using digits of this peak
+ //------------------------------------------------------------
+ Float_t q=(Float_t)bins[k].GetQ();
+ Int_t i=k/max, j=k-i*max;
+
+ c.SetQ(c.GetQ()+q);
+ c.SetY(c.GetY()+i*q);
+ c.SetZ(c.GetZ()+j*q);
+ c.SetSigmaY2(c.GetSigmaY2()+i*i*q);
+ c.SetSigmaZ2(c.GetSigmaZ2()+j*j*q);
+
+ bins[k].SetMask(0xFFFFFFFE);
+
+ if (bins[k-max].GetMask() == m) MakeCluster(k-max,max,bins,m,c);
+ if (bins[k-1 ].GetMask() == m) MakeCluster(k-1 ,max,bins,m,c);
+ if (bins[k+max].GetMask() == m) MakeCluster(k+max,max,bins,m,c);
+ if (bins[k+1 ].GetMask() == m) MakeCluster(k+1 ,max,bins,m,c);
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff