-//_____________________________________________________________________________
-void AliTPC::LoadPoints2(Int_t)
-{
- //
- // Store x, y, z of all hits in memory
- //
- if (fTrackHits == 0 && fTrackHitsOld==0) return;
- //
- Int_t nhits =0;
- if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
- if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
-
- if (nhits == 0) return;
- Int_t tracks = gAlice->GetNtrack();
- if (fPoints == 0) fPoints = new TObjArray(tracks);
- AliHit *ahit;
- //
- Int_t *ntrk=new Int_t[tracks];
- Int_t *limi=new Int_t[tracks];
- Float_t **coor=new Float_t*[tracks];
- for(Int_t i=0;i<tracks;i++) {
- ntrk[i]=0;
- coor[i]=0;
- limi[i]=0;
- }
- //
- AliPoints *points = 0;
- Float_t *fp=0;
- Int_t trk;
- Int_t chunk=nhits/4+1;
- //
- // Loop over all the hits and store their position
- //
- ahit = FirstHit2(-1);
- while (ahit){
- trk=ahit->GetTrack();
- if(ntrk[trk]==limi[trk]) {
- //
- // Initialise a new track
- fp=new Float_t[3*(limi[trk]+chunk)];
- if(coor[trk]) {
- memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
- delete [] coor[trk];
- }
- limi[trk]+=chunk;
- coor[trk] = fp;
- } else {
- fp = coor[trk];
- }
- fp[3*ntrk[trk] ] = ahit->X();
- fp[3*ntrk[trk]+1] = ahit->Y();
- fp[3*ntrk[trk]+2] = ahit->Z();
- ntrk[trk]++;
- ahit = NextHit2();
- }
-
-
-
- //
- for(trk=0; trk<tracks; ++trk) {
- if(ntrk[trk]) {
- points = new AliPoints();
- points->SetMarkerColor(GetMarkerColor());
- points->SetMarkerSize(GetMarkerSize());
- points->SetDetector(this);
- points->SetParticle(trk);
- points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
- fPoints->AddAt(points,trk);
- delete [] coor[trk];
- coor[trk]=0;
- }
- }
- delete [] coor;
- delete [] ntrk;
- delete [] limi;
-}
-
-
-//_____________________________________________________________________________
-void AliTPC::LoadPoints3(Int_t)
-{
- //
- // Store x, y, z of all hits in memory
- // - only intersection point with pad row
- if (fTrackHits == 0) return;
- //
- Int_t nhits = fTrackHits->GetEntriesFast();
- if (nhits == 0) return;
- Int_t tracks = gAlice->GetNtrack();
- if (fPoints == 0) fPoints = new TObjArray(2*tracks);
- fPoints->Expand(2*tracks);
- AliHit *ahit;
- //
- Int_t *ntrk=new Int_t[tracks];
- Int_t *limi=new Int_t[tracks];
- Float_t **coor=new Float_t*[tracks];
- for(Int_t i=0;i<tracks;i++) {
- ntrk[i]=0;
- coor[i]=0;
- limi[i]=0;
- }
- //
- AliPoints *points = 0;
- Float_t *fp=0;
- Int_t trk;
- Int_t chunk=nhits/4+1;
- //
- // Loop over all the hits and store their position
- //
- ahit = FirstHit2(-1);
- //for (Int_t hit=0;hit<nhits;hit++) {
-
- Int_t lastrow = -1;
- while (ahit){
- // ahit = (AliHit*)fHits->UncheckedAt(hit);
- trk=ahit->GetTrack();
- Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
- Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
- Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
- if (currentrow!=lastrow){
- lastrow = currentrow;
- //later calculate intersection point
- if(ntrk[trk]==limi[trk]) {
- //
- // Initialise a new track
- fp=new Float_t[3*(limi[trk]+chunk)];
- if(coor[trk]) {
- memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
- delete [] coor[trk];
- }
- limi[trk]+=chunk;
- coor[trk] = fp;
- } else {
- fp = coor[trk];
- }
- fp[3*ntrk[trk] ] = ahit->X();
- fp[3*ntrk[trk]+1] = ahit->Y();
- fp[3*ntrk[trk]+2] = ahit->Z();
- ntrk[trk]++;
- }
- ahit = NextHit2();
- }
-
- //
- for(trk=0; trk<tracks; ++trk) {
- if(ntrk[trk]) {
- points = new AliPoints();
- points->SetMarkerColor(GetMarkerColor()+1);
- points->SetMarkerStyle(5);
- points->SetMarkerSize(0.2);
- points->SetDetector(this);
- points->SetParticle(trk);
- // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
- points->SetPolyMarker(ntrk[trk],coor[trk],30);
- fPoints->AddAt(points,tracks+trk);
- delete [] coor[trk];
- coor[trk]=0;
- }
- }
- delete [] coor;
- delete [] ntrk;
- delete [] limi;
-}
-
-
-
-void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
-{
-
- //
- //fill clones array with intersection of current point with the
- //middle of the row
- Int_t sector;
- Int_t ipart;
-
- const Int_t kcmaxhits=30000;
- AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
- AliTPCFastVector & xxx = *xxxx;
- Int_t maxhits = kcmaxhits;
-
- //
- AliTPChit * tpcHit=0;
- tpcHit = (AliTPChit*)FirstHit2(-1);
- Int_t currentIndex=0;
- Int_t lastrow=-1; //last writen row
-
- while (tpcHit){
- if (tpcHit==0) continue;
- sector=tpcHit->fSector; // sector number
- ipart=tpcHit->Track();
-
- //find row number
-
- Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
- Int_t index[3]={1,sector,0};
- Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
- if (currentrow<0) continue;
- if (lastrow<0) lastrow=currentrow;
- if (currentrow==lastrow){
- if ( currentIndex>=maxhits){
- maxhits+=kcmaxhits;
- xxx.ResizeTo(4*maxhits);
- }
- xxx(currentIndex*4)=x[0];
- xxx(currentIndex*4+1)=x[1];
- xxx(currentIndex*4+2)=x[2];
- xxx(currentIndex*4+3)=tpcHit->fQ;
- currentIndex++;
- }
- else
- if (currentIndex>2){
- Float_t sumx=0;
- Float_t sumx2=0;
- Float_t sumx3=0;
- Float_t sumx4=0;
- Float_t sumy=0;
- Float_t sumxy=0;
- Float_t sumx2y=0;
- Float_t sumz=0;
- Float_t sumxz=0;
- Float_t sumx2z=0;
- Float_t sumq=0;
- for (Int_t index=0;index<currentIndex;index++){
- Float_t x,x2,x3,x4;
- x=x2=x3=x4=xxx(index*4);
- x2*=x;
- x3*=x2;
- x4*=x3;
- sumx+=x;
- sumx2+=x2;
- sumx3+=x3;
- sumx4+=x4;
- sumy+=xxx(index*4+1);
- sumxy+=xxx(index*4+1)*x;
- sumx2y+=xxx(index*4+1)*x2;
- sumz+=xxx(index*4+2);
- sumxz+=xxx(index*4+2)*x;
- sumx2z+=xxx(index*4+2)*x2;
- sumq+=xxx(index*4+3);
- }
- Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
- Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
- sumx2*(sumx*sumx3-sumx2*sumx2);
-
- Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
- sumx2*(sumxy*sumx3-sumx2y*sumx2);
- Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
- sumx2*(sumxz*sumx3-sumx2z*sumx2);
-
- Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
- sumx2*(sumx*sumx2y-sumx2*sumxy);
- Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
- sumx2*(sumx*sumx2z-sumx2*sumxz);
-
- Float_t y=detay/det+centralPad;
- Float_t z=detaz/det;
- Float_t by=detby/det; //y angle
- Float_t bz=detbz/det; //z angle
- sumy/=Float_t(currentIndex);
- sumz/=Float_t(currentIndex);
-
- AliComplexCluster cl;
- cl.fX=z;
- cl.fY=y;
- cl.fQ=sumq;
- cl.fSigmaX2=bz;
- cl.fSigmaY2=by;
- cl.fTracks[0]=ipart;
-
- AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
- if (row!=0) row->InsertCluster(&cl);
- currentIndex=0;
- lastrow=currentrow;
- } //end of calculating cluster for given row
-
- } // end of loop over hits
- xxxx->Delete();
-
-}
-//_______________________________________________________________________________
-void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
-{
- // produces rec points from digits and writes them on the root file
- // AliTPCclusters.root
-
- TDirectory *cwd = gDirectory;
-
-
- AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
- if(dig){
- printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
- delete dig;
- dig = new AliTPCParamSR();
- }
- else
- {
- dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
- }
- if(!dig){
- printf("No TPC parameters found\n");
- exit(3);
- }
-
- SetParam(dig);
- cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
- TFile *out;
- if(!gSystem->Getenv("CONFIG_FILE")){
- out=TFile::Open("AliTPCclusters.root","recreate");
- }
- else {
- const char *tmp1;
- const char *tmp2;
- char tmp3[80];
- tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
- tmp2=gSystem->Getenv("CONFIG_OUTDIR");
- sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
- out=TFile::Open(tmp3,"recreate");
- }
-
- TStopwatch timer;
- cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
- timer.Start();
- cwd->cd();
- for(Int_t iev=firstevent;iev<lastevent+1;iev++){
-
- printf("Processing event %d\n",iev);
- Digits2Clusters(iev);
- }
- cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
- timer.Stop();
- timer.Print();
- out->Close();
- cwd->cd();
-
-
-}