/* $Id$ */
-////////////////////////////////////////////////////
-// Stand alone tracker class //
-// Origin: Elisabetta Crescio //
-// e-mail: crescio@to.infn.it //
-// tracks are saved as AliITStrackV2 objects //
-////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////
+// Stand alone ITS tracker class //
+// Origin: Elisabetta Crescio - crescio@to.infn.it //
+// Updated: Francesco Prino - prino@to.infn.it //
+///////////////////////////////////////////////////////////
#include <stdlib.h>
#include "AliITStrackSA.h"
#include "AliITStrackerSA.h"
#include "AliITSReconstructor.h"
+#include "AliLog.h"
#include "AliRun.h"
ClassImp(AliITStrackerSA)
fNloop(0),
fPhiWin(0),
fLambdaWin(0),
-fVert(0),
-fVertexer(0),
fListOfTracks(0),
fListOfSATracks(0),
fITSclusters(0),
-fSixPoints(0),
+fInwardFlag(0),
fOuterStartLayer(0),
-fCluLayer(0),
+fInnerStartLayer(5),
+fMinNPoints(0),
+fMinQ(0.),
fCluCoord(0){
// Default constructor
Init();
fNloop(0),
fPhiWin(0),
fLambdaWin(0),
-fVert(0),
-fVertexer(0),
fListOfTracks(0),
fListOfSATracks(0),
fITSclusters(0),
-fSixPoints(0),
+fInwardFlag(0),
fOuterStartLayer(0),
-fCluLayer(0),
+fInnerStartLayer(5),
+fMinNPoints(0),
+fMinQ(0.),
fCluCoord(0)
{
// Standard constructor (Vertex is known and passed to this obj.)
}
Init();
- fVert = 0;
-
-}
-
-//____________________________________________________________________________
-AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliESDVertex *vert):AliITStrackerMI(0),
-fPhiEstimate(0),
-fITSStandAlone(0),
-fLambdac(0),
-fPhic(0),
-fCoef1(0),
-fCoef2(0),
-fCoef3(0),
-fNloop(0),
-fPhiWin(0),
-fLambdaWin(0),
-fVert(vert),
-fVertexer(0),
-fListOfTracks(0),
-fListOfSATracks(0),
-fITSclusters(0),
-fSixPoints(0),
-fOuterStartLayer(0),
-fCluLayer(0),
-fCluCoord(0)
-{
- // Standard constructor (Vertex is known and passed to this obj.)
- if (geom) {
- AliWarning("\"geom\" is actually a dummy argument !");
- }
- Init();
-
-}
-
-//____________________________________________________________________________
-AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliITSVertexer *vertexer):AliITStrackerMI(0),
-fPhiEstimate(0),
-fITSStandAlone(0),
-fLambdac(0),
-fPhic(0),
-fCoef1(0),
-fCoef2(0),
-fCoef3(0),
-fNloop(0),
-fPhiWin(0),
-fLambdaWin(0),
-fVert(),
-fVertexer(vertexer),
-fListOfTracks(0),
-fListOfSATracks(0),
-fITSclusters(0),
-fSixPoints(0),
-fOuterStartLayer(0),
-fCluLayer(0),
-fCluCoord(0)
-{
- // Standard constructor (Vertex is unknown - vertexer is passed to this obj)
- if (geom) {
- AliWarning("\"geom\" is actually a dummy argument !");
- }
- Init();
- fVertexer = vertexer;
-
-}
-
-//____________________________________________________________________________
-AliITStrackerSA::AliITStrackerSA(const AliITStrackerSA& tracker):AliITStrackerMI(),
-fPhiEstimate(tracker.fPhiEstimate),
-fITSStandAlone(tracker.fITSStandAlone),
-fLambdac(tracker.fLambdac),
-fPhic(tracker.fPhic),
-fCoef1(tracker.fCoef1),
-fCoef2(tracker.fCoef2),
-fCoef3(tracker.fCoef3),
-fNloop(tracker.fNloop),
-fPhiWin(tracker.fPhiWin),
-fLambdaWin(tracker.fLambdaWin),
-fVert(tracker.fVert),
-fVertexer(tracker.fVertexer),
-fListOfTracks(tracker.fListOfTracks),
-fListOfSATracks(tracker.fListOfSATracks),
-fITSclusters(tracker.fITSclusters),
-fSixPoints(tracker.fSixPoints),
-fOuterStartLayer(tracker.fOuterStartLayer),
-fCluLayer(tracker.fCluLayer),
-fCluCoord(tracker.fCluCoord) {
- // Copy constructor
- for(Int_t i=0;i<2;i++){
- fPoint1[i]=tracker.fPoint1[i];
- fPoint2[i]=tracker.fPoint2[i];
- fPoint3[i]=tracker.fPoint3[i];
- fPointc[i]=tracker.fPointc[i];
- }
- if(tracker.fVertexer && tracker.fVert){
- fVert = new AliESDVertex(*tracker.fVert);
- }
- else {
- fVert = tracker.fVert;
- }
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
- fCluLayer[i] = tracker.fCluLayer[i];
- fCluCoord[i] = tracker.fCluCoord[i];
- }
-}
-//______________________________________________________________________
-AliITStrackerSA& AliITStrackerSA::operator=(const AliITStrackerSA& source){
- // Assignment operator.
- this->~AliITStrackerSA();
- new(this) AliITStrackerSA(source);
- return *this;
}
//____________________________________________________________________________
AliITStrackerSA::~AliITStrackerSA(){
// destructor
- // if fVertexer is not null, the AliESDVertex obj. is owned by this class
- // and is deleted here
- if(fVertexer){
- if(fVert)delete fVert;
- }
- fVert = 0;
- fVertexer = 0;
if(fPhiWin)delete []fPhiWin;
if(fLambdaWin)delete []fLambdaWin;
delete fListOfTracks;
fListOfSATracks->Delete();
delete fListOfSATracks;
- if(fCluLayer){
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
- if(fCluLayer[i]){
- fCluLayer[i]->Delete();
- delete fCluLayer[i];
- }
- }
- delete [] fCluLayer;
- }
if(fCluCoord){
for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
if(fCluCoord[i]){
}
delete [] fCluCoord;
}
-
}
//____________________________________________________________________________
// is done in the ITS only. In the standard reconstruction chain this option
// can be set via AliReconstruction::SetOption("ITS","onlyITS")
Int_t rc=0;
+
if(!fITSStandAlone){
rc=AliITStrackerMI::Clusters2Tracks(event);
}
else {
AliDebug(1,"Stand Alone flag set: doing tracking in ITS alone\n");
}
- if(!rc) rc=FindTracks(event);
+ if(!rc){
+ rc=FindTracks(event,kFALSE);
+ Int_t nSPDcontr=0;
+ const AliESDVertex *spdv = event->GetPrimaryVertexSPD();
+ if(spdv) nSPDcontr = spdv->GetNContributors();
+ if(AliITSReconstructor::GetRecoParam()->GetSAUseAllClusters()==kTRUE &&
+ nSPDcontr<=AliITSReconstructor::GetRecoParam()->GetMaxSPDcontrForSAToUseAllClusters()) {
+ rc=FindTracks(event,kTRUE);
+ }
+ }
return rc;
}
void AliITStrackerSA::Init(){
// Reset all data members
fPhiEstimate=0;
- for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
+ for(Int_t i=0;i<2;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
fLambdac=0;
fPhic=0;
fCoef1=0;
fCoef3=0;
fPointc[0]=0;
fPointc[1]=0;
- fVert = 0;
- fVertexer = 0;
Int_t nLoops=AliITSReconstructor::GetRecoParam()->GetNLoopsSA();
- if(nLoops==33){
+ if(nLoops==32){
SetFixedWindowSizes();
}else{
Double_t phimin=AliITSReconstructor::GetRecoParam()->GetMinPhiSA();
Double_t lambmax=AliITSReconstructor::GetRecoParam()->GetMaxLambdaSA();
SetCalculatedWindowSizes(nLoops,phimin,phimax,lambmin,lambmax);
}
+ fMinQ=AliITSReconstructor::GetRecoParam()->GetSAMinClusterCharge();
fITSclusters = 0;
- SetSixPoints();
- SetOuterStartLayer(0);
+ SetOuterStartLayer(1);
SetSAFlag(kFALSE);
- fListOfTracks=new TObjArray(0,0);
- fListOfSATracks=new TObjArray(0,0);
- fCluLayer = 0;
+ fListOfTracks=new TClonesArray("AliITStrackMI",100);
+ fListOfSATracks=new TClonesArray("AliITStrackSA",100);
fCluCoord = 0;
+ fMinNPoints = 3;
}
//_______________________________________________________________________
void AliITStrackerSA::ResetForFinding(){
// Reset data members used in all loops during track finding
fPhiEstimate=0;
- for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
+ for(Int_t i=0;i<2;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
fLambdac=0;
fPhic=0;
fCoef1=0;
fCoef3=0;
fPointc[0]=0;
fPointc[1]=0;
- fListOfTracks->Delete();
- fListOfSATracks->Delete();
+ fListOfTracks->Clear();
+ fListOfSATracks->Clear();
}
//______________________________________________________________________
-Int_t AliITStrackerSA::FindTracks(AliESDEvent* event){
+Int_t AliITStrackerSA::FindTracks(AliESDEvent* event, Bool_t useAllClusters){
// Track finder using the ESD object
+ AliDebug(2,Form(" field is %f",event->GetMagneticField()));
+ AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
-
if(!fITSclusters){
- Fatal("FindTracks","ITS cluster tree is not accessed - Abort!!!\n Please use method SetClusterTree to pass the pointer to the tree\n");
+ Fatal("FindTracks","ITS cluster tree is not accessed!!!\n Please use method SetClusterTree to pass the pointer to the tree\n");
return -1;
}
//Reads event and mark clusters of traks already found, with flag kITSin
Int_t nentr=event->GetNumberOfTracks();
- if(AliITSReconstructor::GetRecoParam()->GetSAUseAllClusters()==kFALSE) {
+ if(!useAllClusters) {
while (nentr--) {
AliESDtrack *track=event->GetTrack(nentr);
- if (track->GetStatus()&AliESDtrack::kITSin==AliESDtrack::kITSin){
+ if ((track->GetStatus()&AliESDtrack::kITSin) == AliESDtrack::kITSin){
Int_t idx[12];
Int_t ncl = track->GetITSclusters(idx);
for(Int_t k=0;k<ncl;k++){
}
}
}
+ }else{
+ while (nentr--) {
+ AliESDtrack *track=event->GetTrack(nentr);
+ if ((track->GetStatus()&AliESDtrack::kITSin) == AliESDtrack::kITSin){
+ Int_t idx[12];
+ Int_t ncl = track->GetITSclusters(idx);
+ for(Int_t k=0;k<ncl;k++){
+ AliITSRecPoint* cll = (AliITSRecPoint*)GetCluster(idx[k]);
+ cll->ResetBit(kSAflag);
+ }
+ }
+ }
}
//Get primary vertex
Double_t primaryVertex[3];
//by AliITStrackerMI are not considered
Int_t nclusters[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0};
Int_t dmar[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0};
- if (fCluLayer == 0) {
- fCluLayer = new TClonesArray*[AliITSgeomTGeo::kNLayers];
+ if (fCluCoord == 0) {
fCluCoord = new TClonesArray*[AliITSgeomTGeo::kNLayers];
for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
- fCluLayer[i]=0;
fCluCoord[i]=0;
}
}
for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
AliITSlayer &layer=fgLayers[i];
- if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) {
+ if (!ForceSkippingOfLayer(i)) {
for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){
AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli);
if(cls->TestBit(kSAflag)==kTRUE) continue; //clusters used by TPC prol.
if(cls->GetQ()==0) continue; //fake clusters dead zones
+ if(i>1 && cls->GetQ()<=fMinQ) continue; // cut on SDD and SSD cluster charge
nclusters[i]++;
}
}
dmar[i]=0;
- delete fCluLayer[i];
- fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]);
- delete fCluCoord[i];
- fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]);
+ if(!fCluCoord[i]){
+ fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]);
+ }else{
+ fCluCoord[i]->Delete();
+ fCluCoord[i]->Expand(nclusters[i]);
+ }
}
for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){
- TClonesArray &clulay = *fCluLayer[ilay];
TClonesArray &clucoo = *fCluCoord[ilay];
AliITSlayer &layer=fgLayers[ilay];
- if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) {
+ if (!ForceSkippingOfLayer(ilay)) {
for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){
AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli);
if(cls->TestBit(kSAflag)==kTRUE) continue;
if(cls->GetQ()==0) continue;
+ if(ilay>1 && cls->GetQ()<=fMinQ) continue;
Double_t phi=0;Double_t lambda=0;
- Float_t x=0;Float_t y=0;Float_t z=0;
- Float_t sx=0;Float_t sy=0;Float_t sz=0;
+ Double_t x=0;Double_t y=0;Double_t z=0;
+ Double_t sx=0;Double_t sy=0;Double_t sz=0;
GetCoorAngles(cls,phi,lambda,x,y,z,primaryVertex);
GetCoorErrors(cls,sx,sy,sz);
- new (clulay[dmar[ilay]]) AliITSRecPoint(*cls);
new (clucoo[dmar[ilay]]) AliITSclusterTable(x,y,z,sx,sy,sz,phi,lambda,cli);
dmar[ilay]++;
}
}
+ fCluCoord[ilay]->Sort();
}
// track counter
Int_t ntrack=0;
- Int_t minNPoints = (fSixPoints ? AliITSgeomTGeo::GetNLayers() : AliITSgeomTGeo::GetNLayers()-1);
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
- if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) {
- minNPoints--;
- }
- }
-
static Int_t nClusLay[AliITSgeomTGeo::kNLayers];//counter for clusters on each layer
+ Int_t startLayForSeed=0;
+ Int_t lastLayForSeed=fOuterStartLayer;
+ Int_t nSeedSteps=lastLayForSeed-startLayForSeed;
+ Int_t seedStep=1;
+ if(fInwardFlag){
+ startLayForSeed=AliITSgeomTGeo::GetNLayers()-1;
+ lastLayForSeed=fInnerStartLayer;
+ nSeedSteps=startLayForSeed-lastLayForSeed;
+ seedStep=-1;
+ }
- //loop on different minNPoints
- Int_t minMinNPoints=minNPoints;
- if(AliITSReconstructor::GetRecoParam()->GetSAOnePointTracks()) minMinNPoints=2;
- for(Int_t iMinNPoints=minNPoints; iMinNPoints>=minMinNPoints; iMinNPoints--) {
- //loop on the different windows
- for(Int_t nloop=0;nloop<fNloop;nloop++){
- for(Int_t ncl=0;ncl<fCluLayer[0]->GetEntries();ncl++){ //loop starting from layer 0
-
- ResetForFinding();
- Int_t pflag=0;
-
- AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[0]->At(ncl);
-
- if(!cl) continue;
- if (cl->GetQ()<=0) continue;
-
- AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(0,ncl);
- fPhic = arr->GetPhi();
- fLambdac = arr->GetLambda();
- if (TMath::Abs(fLambdac)>0.26*TMath::Pi()) continue;
- fPhiEstimate = fPhic;
- AliITStrackSA* trs = new AliITStrackSA();
- fPoint1[0]=primaryVertex[0];
- fPoint1[1]=primaryVertex[1];
-
-
- fPoint2[0]=arr->GetX();
- fPoint2[1]=arr->GetY();
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) nClusLay[i]=0;
- nClusLay[0] = SearchClusters(0,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
- nClusLay[1] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
- if(nClusLay[1]>0){
- pflag=1;
- fPoint3[0] = fPointc[0];
- fPoint3[1] = fPointc[1];
- }
- nClusLay[2] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
- if(nClusLay[1]==0 && nClusLay[2]==0) pflag=0;
- if(nClusLay[2]!=0 && nClusLay[1]!=0){ pflag=1; UpdatePoints();}
- if(nClusLay[2]!=0 && nClusLay[1]==0){
- pflag=1;
- fPoint3[0]=fPointc[0];
- fPoint3[1]=fPointc[1];
- }
-
- nClusLay[3] = SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
- pflag=1;
- if(nClusLay[3]!=0) UpdatePoints();
- nClusLay[4] = SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
- pflag=1;
- if(nClusLay[4]!=0) UpdatePoints();
- nClusLay[5] = SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
-
-
- Int_t layOK=0;
- //check of the candidate track
- for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers();nnp++) {
- if(nClusLay[nnp]!=0) layOK+=1;
- }
-
- if(layOK>=iMinNPoints) {
- //printf("-NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]);
- AliITStrackV2* tr2 = 0;
- tr2 = FitTrack(trs,primaryVertex);
- if(!tr2) continue;
- //printf("-NPOINTS fit: %d\n",tr2->GetNumberOfClusters());
-
-
- AliESDtrack outtrack;
- outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
- event->AddTrack(&outtrack);
- ntrack++;
- }
- delete trs;
- }//end loop on clusters of layer1
- }//end loop on windows
- }//end loop on min points
-
-
- minNPoints--;
-
- //if 5/6 points are required, second loop starting
- //from second layer (SPD2), to find tracks with point of
- //layer 1 missing. Not done for cosmics.
- if(!fSixPoints && fOuterStartLayer==0) {
- //printf("looking from SPD2\n");
- // counter for clusters on each layer
- for(Int_t nloop=0;nloop<fNloop;nloop++){
- Int_t ncl2=fCluLayer[1]->GetEntries();
- while(ncl2--){ //loop starting from layer 2
- ResetForFinding();
- Int_t pflag=0;
- AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[1]->At(ncl2);
-
- if(!cl) continue;
- AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(1,ncl2);
- fPhic = arr->GetPhi();
- fLambdac = arr->GetLambda();
- fPhiEstimate = fPhic;
-
- AliITStrackSA* trs = new AliITStrackSA();
- fPoint1[0]=primaryVertex[0];
- fPoint1[1]=primaryVertex[1];
-
- fPoint2[0]=arr->GetX();
- fPoint2[1]=arr->GetY();
- for(Int_t kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0;
- nClusLay[0] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
- nClusLay[1] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
- if(nClusLay[1]!=0){
- pflag=1;
- fPoint3[0]=fPointc[0];
- fPoint3[1]=fPointc[1];
- }
- nClusLay[2]= SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
- if(nClusLay[2]!=0){
- pflag=1;
- UpdatePoints();
- }
- nClusLay[3]= SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
- if(nClusLay[3]!=0){
- pflag=1;
- UpdatePoints();
- }
- nClusLay[4]=SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
-
- Int_t layOK=0;
- for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-1;nnp++){
- if(nClusLay[nnp]!=0) layOK+=1;
- }
- if(layOK>=minNPoints){ // 5/6
- //printf("--NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]);
-
- AliITStrackV2* tr2 = 0;
- tr2 = FitTrack(trs,primaryVertex);
- if(!tr2) continue;
- //printf("--NPOINTS fit: %d\n",tr2->GetNumberOfClusters());
-
- AliESDtrack outtrack;
- outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
- event->AddTrack(&outtrack);
- ntrack++;
-
- }
-
- delete trs;
- }//end loop on clusters of layer2
- }
-
- } //end opt="5/6"
-
- // search for tracks starting from SPD2, SDD1, SDD2, SSD2
- // for cosmics (A. Dainese 31.07.07)
- if(fOuterStartLayer>0 && !AliITSReconstructor::GetRecoParam()->GetSAOnePointTracks()) {
- for(Int_t innLay=1; innLay<=fOuterStartLayer; innLay++) {
- //printf("Searching from layer %d outward\n",innLay);
- minNPoints=AliITSgeomTGeo::GetNLayers()-innLay;
- for(Int_t i=innLay;i<AliITSgeomTGeo::GetNLayers();i++)
- if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i))
+ // loop on minimum number of points
+ for(Int_t iMinNPoints=AliITSgeomTGeo::GetNLayers(); iMinNPoints>=fMinNPoints; iMinNPoints--) {
+
+ // loop on starting layer for track finding
+ for(Int_t iSeedLay=0; iSeedLay<=nSeedSteps; iSeedLay++) {
+ Int_t theLay=startLayForSeed+iSeedLay*seedStep;
+ if(ForceSkippingOfLayer(theLay)) continue;
+ Int_t minNPoints=iMinNPoints-theLay;
+ if(fInwardFlag) minNPoints=iMinNPoints-(AliITSgeomTGeo::GetNLayers()-1-theLay);
+ for(Int_t i=theLay+1;i<AliITSgeomTGeo::GetNLayers();i++)
+ if(ForceSkippingOfLayer(i))
minNPoints--;
- // counter for clusters on each layer
+ if(minNPoints<fMinNPoints) continue;
+ // loop on phi and lambda window size
for(Int_t nloop=0;nloop<fNloop;nloop++){
- Int_t nclInnLay=fCluLayer[innLay]->GetEntries();
- while(nclInnLay--){ //loop starting from layer innLay
+ Int_t nclTheLay=fCluCoord[theLay]->GetEntries();
+ while(nclTheLay--){
ResetForFinding();
- Int_t pflag=0;
- AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay);
-
- if(!cl) continue;
- AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay);
- fPhic = arr->GetPhi();
- fLambdac = arr->GetLambda();
- fPhiEstimate = fPhic;
-
- AliITStrackSA* trs = new AliITStrackSA();
- fPoint1[0]=primaryVertex[0];
- fPoint1[1]=primaryVertex[1];
- fPoint2[0]=arr->GetX();
- fPoint2[1]=arr->GetY();
-
+ Bool_t useRP=SetFirstPoint(theLay,nclTheLay,primaryVertex);
+ if(!useRP) continue;
+ AliITStrackSA trs;
+
+ Int_t pflag=0;
Int_t kk;
for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0;
-
+
kk=0;
- nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
- for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) {
+ nClusLay[kk] = SearchClusters(theLay,fPhiWin[nloop],fLambdaWin[nloop],
+ &trs,primaryVertex[2],pflag);
+ Int_t nextLay=theLay+seedStep;
+ Bool_t goon=kTRUE;
+ if(nextLay<0 || nextLay == 6) goon = kFALSE;
+ while(goon){
kk++;
nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
+ &trs,primaryVertex[2],pflag);
if(nClusLay[kk]!=0){
pflag=1;
if(kk==1) {
UpdatePoints();
}
}
+ nextLay+=seedStep;
+ if(nextLay<0 || nextLay==6) goon=kFALSE;
}
-
+
+
Int_t layOK=0;
- for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){
- if(nClusLay[nnp]!=0) layOK+=1;
+ if(!fInwardFlag){
+ for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-theLay;nnp++){
+ if(nClusLay[nnp]!=0) layOK+=1;
+ }
+ }else{
+ for(Int_t nnp=theLay; nnp>=0; nnp--){
+ if(nClusLay[nnp]!=0) layOK+=1;
+ }
}
if(layOK>=minNPoints){
- //printf("---NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]);
+ AliDebug(2,Form("---NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]));
AliITStrackV2* tr2 = 0;
- tr2 = FitTrack(trs,primaryVertex);
- if(!tr2) continue;
- //printf("---NPOINTS fit: %d\n",tr2->GetNumberOfClusters());
-
- AliESDtrack outtrack;
- outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
- event->AddTrack(&outtrack);
+ tr2 = FitTrack(&trs,primaryVertex);
+ if(!tr2){
+ continue;
+ }
+ AliDebug(2,Form("---NPOINTS fit: %d\n",tr2->GetNumberOfClusters()));
+
+ StoreTrack(tr2,event,useAllClusters);
ntrack++;
-
+
}
- delete trs;
- }//end loop on clusters of innLay
+ }//end loop on clusters of theLay
} //end loop on window sizes
-
- } //end loop on innLay
- } //end if(fOuterStartLayer>0)
-
+ } //end loop on theLay
+ }//end loop on min points
// search for 1-point tracks in SPD, only for cosmics
// (A.Dainese 21.03.08)
// counter for clusters on each layer
for(Int_t nloop=0;nloop<fNloop;nloop++){
- Int_t nclInnLay=fCluLayer[innLay]->GetEntries();
+ Int_t nclInnLay=fCluCoord[innLay]->GetEntries();
while(nclInnLay--){ //loop starting from layer innLay
ResetForFinding();
- Int_t pflag=0;
- AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay);
-
- if(!cl) continue;
- AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay);
- fPhic = arr->GetPhi();
- fLambdac = arr->GetLambda();
- fPhiEstimate = fPhic;
-
- AliITStrackSA* trs = new AliITStrackSA();
- fPoint1[0]=primaryVertex[0];
- fPoint1[1]=primaryVertex[1];
- fPoint2[0]=arr->GetX();
- fPoint2[1]=arr->GetY();
-
+ Bool_t useRP=SetFirstPoint(innLay,nclInnLay,primaryVertex);
+ if(!useRP) continue;
+ AliITStrackSA trs;
+
+ Int_t pflag=0;
Int_t kk;
for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0;
kk=0;
nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
+ &trs,primaryVertex[2],pflag);
for(Int_t nextLay=innLay+1; nextLay<=outerLayer; nextLay++) {
kk++;
nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop],
- trs,primaryVertex[2],pflag);
+ &trs,primaryVertex[2],pflag);
if(nClusLay[kk]!=0){
pflag=1;
if(kk==1) {
if(nClusLay[nnp]!=0) layOK+=1;
}
if(layOK==1) {
- //printf("----NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]);
+ AliDebug(2,Form("----NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]));
AliITStrackV2* tr2 = 0;
Bool_t onePoint = kTRUE;
- tr2 = FitTrack(trs,primaryVertex,onePoint);
- if(!tr2) continue;
- //printf("----NPOINTS fit: %d\n",tr2->GetNumberOfClusters());
+ tr2 = FitTrack(&trs,primaryVertex,onePoint);
+ if(!tr2){
+ continue;
+ }
+ AliDebug(2,Form("----NPOINTS fit: %d\n",tr2->GetNumberOfClusters()));
- AliESDtrack outtrack;
- outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
- event->AddTrack(&outtrack);
+ StoreTrack(tr2,event,useAllClusters);
ntrack++;
}
- delete trs;
}//end loop on clusters of innLay
} //end loop on window sizes
} //end loop on innLay
} // end search 1-point tracks
- Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks());
+ if(!useAllClusters) AliInfo(Form("Number of found tracks: %d",event->GetNumberOfTracks()));
+ ResetForFinding();
return 0;
}
const Int_t kMaxClu=AliITStrackSA::kMaxNumberOfClusters;
- static Int_t firstmod[AliITSgeomTGeo::kNLayers];
-
+ static Int_t firstmod[AliITSgeomTGeo::kNLayers];
static Int_t clind[AliITSgeomTGeo::kNLayers][kMaxClu];
static Int_t clmark[AliITSgeomTGeo::kNLayers][kMaxClu];
- static Int_t nnn[AliITSgeomTGeo::kNLayers];
- static Int_t kkk[AliITSgeomTGeo::kNLayers];
static Int_t end[AliITSgeomTGeo::kNLayers];
+ static Int_t indices[AliITSgeomTGeo::kNLayers];
+
static AliITSRecPoint *listlayer[AliITSgeomTGeo::kNLayers][kMaxClu];
for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
- nnn[i]=0;
- kkk[i]=0;
end[i]=0;
for(Int_t j=0;j<kMaxClu; j++){
clind[i][j]=0;
for(Int_t ncl=0;ncl<nclusters;ncl++){
Int_t index = tr->GetClusterIndexSA(ncl);
AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
- if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
Int_t lay = (index & 0xf0000000) >> 28;
Int_t nInLay=end[lay];
listlayer[lay][nInLay]=cl;
- Int_t ind=nnn[lay];
- clind[lay][ind]=index;
+ clind[lay][nInLay]=index;
end[lay]++;
}
for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
Int_t mark = tr->GetClusterMark(nlay,ncl);
- Int_t ind=kkk[nlay];
- clmark[nlay][ind]=mark;
+ clmark[nlay][ncl]=mark;
}
}
}
if(firstLay==-1 || (secondLay==-1 && !onePoint)) return 0;
-
+ TClonesArray &arrMI= *fListOfTracks;
+ TClonesArray &arrSA= *fListOfSATracks;
+ Int_t nFoundTracks=0;
+
+
for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1
- AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0][l0];
+ indices[0]=l0;
for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2
- AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1][l1];
+ indices[1]=l1;
for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3
- AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2][l2];
+ indices[2]=l2;
for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4
- AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3][l3];
+ indices[3]=l3;
for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5
- AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4][l4];
+ indices[4]=l4;
for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6
- AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5][l5];
-
-
- Double_t x1,y1,z1,sx1,sy1,sz1;
- Double_t x2,y2,z2,sx2,sy2,sz2;
- AliITSRecPoint* p1=0;
- AliITSRecPoint* p2=0;
- Int_t index1=0,index2=0;
- Int_t mrk1=0,mrk2=0;
-
- switch(firstLay) {
- case 0:
- p1=cl0;
- index1=clind[0][l0];mrk1=clmark[0][l0];
- break;
- case 1:
- p1=cl1;
- index1=clind[1][l1];mrk1=clmark[1][l1];
- break;
- case 2:
- p1=cl2;
- index1=clind[2][l2];mrk1=clmark[2][l2];
- break;
- case 3:
- p1=cl3;
- index1=clind[3][l3];mrk1=clmark[3][l3];
- break;
- case 4:
- p1=cl4;
- index1=clind[4][l4];mrk1=clmark[4][l4];
- break;
- }
+ indices[5]=l5;
- switch(secondLay) {
- case 1:
- p2=cl1;
- index2=clind[1][l1];mrk2=clmark[1][l1];
- break;
- case 2:
- p2=cl2;
- index2=clind[2][l2];mrk2=clmark[2][l2];
- break;
- case 3:
- p2=cl3;
- index2=clind[3][l3];mrk2=clmark[3][l3];
- break;
- case 4:
- p2=cl4;
- index2=clind[4][l4];mrk2=clmark[4][l4];
- break;
- case 5:
- p2=cl5;
- index2=clind[5][l5];mrk2=clmark[5][l5];
- break;
- default:
- p2=0;
- index2=-1;mrk2=-1;
- break;
- }
+ // estimate curvature from 2 innermost points (or innermost point + vertex)
+
+ Int_t iFirstLay=indices[firstLay];
+ Int_t mrk1=clmark[firstLay][iFirstLay];
+ AliITSRecPoint* p1=(AliITSRecPoint*)listlayer[firstLay][iFirstLay];
Int_t module1 = p1->GetDetectorIndex()+firstmod[firstLay];
Int_t layer,ladder,detector;
AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
- Float_t yclu1 = p1->GetY();
- Float_t zclu1 = p1->GetZ();
+ Double_t yclu1 = p1->GetY();
+ Double_t zclu1 = p1->GetZ();
+
+ Double_t x1,y1,z1;
+ Double_t x2,y2,z2;
Double_t cv=0,tgl2=0,phi2=0;
-
- Int_t cln1=mrk1;
- AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(firstLay,cln1);
+ AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(firstLay,mrk1);
x1 = arr1->GetX();
y1 = arr1->GetY();
z1 = arr1->GetZ();
- sx1 = arr1->GetSx();
- sy1 = arr1->GetSy();
- sz1 = arr1->GetSz();
if(secondLay>0) {
- Int_t cln2=mrk2;
- AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(secondLay,cln2);
+ Int_t iSecondLay=indices[secondLay];
+ Int_t mrk2=clmark[secondLay][iSecondLay];
+ AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(secondLay,mrk2);
x2 = arr2->GetX();
y2 = arr2->GetY();
z2 = arr2->GetZ();
- sx2 = arr2->GetSx();
- sy2 = arr2->GetSy();
- sz2 = arr2->GetSz();
cv = Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
phi2 = TMath::ATan2((y2-y1),(x2-x1));
phi2 = TMath::ATan2((y1-y2),(x1-x2));
}
-
- AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
-
-
- if(cl5!=0) {
- trac->AddClusterV2(5,(clind[5][l5] & 0x0fffffff)>>0);
- trac->AddClusterMark(5,clmark[5][l5]);
- }
- if(cl4!=0){
- trac->AddClusterV2(4,(clind[4][l4] & 0x0fffffff)>>0);
- trac->AddClusterMark(4,clmark[4][l4]);
- }
- if(cl3!=0){
- trac->AddClusterV2(3,(clind[3][l3] & 0x0fffffff)>>0);
- trac->AddClusterMark(3,clmark[3][l3]);
- }
- if(cl2!=0){
- trac->AddClusterV2(2,(clind[2][l2] & 0x0fffffff)>>0);
- trac->AddClusterMark(2,clmark[2][l2]);
- }
- if(cl1!=0){
- trac->AddClusterV2(1,(clind[1][l1] & 0x0fffffff)>>0);
- trac->AddClusterMark(1,clmark[1][l1]);
- }
- if(cl0!=0){
- trac->AddClusterV2(0,(clind[0][l0] & 0x0fffffff)>>0);
- trac->AddClusterMark(0,clmark[0][l0]);
+ // create track and attach it the RecPoints
+ AliITStrackSA trac(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
+ for(Int_t iLay=5; iLay>=0; iLay--){
+ Int_t iInLay=indices[iLay];
+ AliITSRecPoint* cl=(AliITSRecPoint*)listlayer[iLay][iInLay];
+ if(cl!=0){
+ trac.AddClusterV2(iLay,(clind[iLay][iInLay] & 0x0fffffff)>>0);
+ trac.AddClusterMark(iLay,clmark[iLay][iInLay]);
+ }
}
//fit with Kalman filter using AliITStrackerMI::RefitAt()
- AliITStrackMI* ot = new AliITStrackSA(*trac);
-
- ot->ResetCovariance(10.);
- ot->ResetClusters();
+ AliITStrackSA ot(trac);
+
+ ot.ResetCovariance(10.);
+ ot.ResetClusters();
- if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
- AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
- otrack2->ResetCovariance(10.);
- otrack2->ResetClusters();
- //fit from layer 6 to layer 1
- if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
- fListOfTracks->AddLast(otrack2);
- fListOfSATracks->AddLast(trac);
- } else {
- delete otrack2;
- delete trac;
- }
+ // Propagate inside the innermost layer with a cluster
+ if(ot.Propagate(ot.GetX()-0.1*ot.GetX())) {
+
+ if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&ot,&trac)){ //fit from layer 1 to layer 6
+ AliITStrackMI otrack2(ot);
+ otrack2.ResetCovariance(10.);
+ otrack2.ResetClusters();
+ //fit from layer 6 to layer 1
+ if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),&otrack2,&ot)) {
+ new(arrMI[nFoundTracks]) AliITStrackMI(otrack2);
+ new(arrSA[nFoundTracks]) AliITStrackSA(trac);
+ ++nFoundTracks;
+ }
- }
-
- delete ot;
+ }
+ }
}//end loop layer 6
}//end loop layer 5
}//end loop layer 4
if(otrack==0) return 0;
- Int_t indexc[AliITSgeomTGeo::kNLayers];
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
- for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
- indexc[nind] = otrack->GetClusterIndex(nind);
- }
- Int_t labl[6][3];
- for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
- if(i<otrack->GetNumberOfClusters()) {
- AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]);
- labl[i][0]=cl->GetLabel(0);
- labl[i][1]=cl->GetLabel(1);
- labl[i][2]=cl->GetLabel(2);
- } else {
- labl[i][0]=-1;
- labl[i][1]=-1;
- labl[i][2]=-1;
- }
- }
-
CookLabel(otrack,0.); //MI change - to see fake ratio
-
- Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]);
- Int_t lflag=0;
- for(Int_t i=0;i<otrack->GetNumberOfClusters();i++)
- if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++;
-
- if(lflag<otrack->GetNumberOfClusters()) label = -label;
+ Int_t label=FindLabel(otrack);
otrack->SetLabel(label);
+ Double_t low=0.;
+ Double_t up=0.51;
+ otrack->CookdEdx(low,up);
//remove clusters of found track
for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
Int_t index = trsa->GetClusterMark(nlay,cln);
- fCluLayer[nlay]->RemoveAt(index);
RemoveClusterCoord(nlay,index);
- fCluLayer[nlay]->Compress();
}
}
}
+//_______________________________________________________
+void AliITStrackerSA::StoreTrack(AliITStrackV2 *t,AliESDEvent *event, Bool_t pureSA) const
+{
+ //
+ // Add new track to the ESD
+ //
+ AliESDtrack outtrack;
+ outtrack.UpdateTrackParams(t,AliESDtrack::kITSin);
+ if(pureSA) outtrack.SetStatus(AliESDtrack::kITSpureSA);
+ for(Int_t i=0;i<12;i++) {
+ outtrack.SetITSModuleIndex(i,t->GetModuleIndex(i));
+ }
+ Double_t sdedx[4]={0.,0.,0.,0.};
+ for(Int_t i=0; i<4; i++) sdedx[i]=t->GetSampledEdx(i);
+ outtrack.SetITSdEdxSamples(sdedx);
+
+
+ if(AliITSReconstructor::GetRecoParam()->GetSAUsedEdxInfo()){
+ Double_t mom=t->P();
+ Double_t ppid[AliPID::kSPECIES];
+ for(Int_t isp=0;isp<AliPID::kSPECIES;isp++) ppid[isp]=0.;
+ ppid[AliPID::kPion]=1.;
+ if(mom<0.7){
+ Double_t truncmean=t->GetdEdx();
+ Int_t ide=fITSPid->GetParticleIdFromdEdxVsP(mom,truncmean,kTRUE);
+ if(ide==AliPID::kProton){
+ ppid[AliPID::kProton]=1.;
+ ppid[AliPID::kPion]=0.;
+ }
+ else if(ide==AliPID::kKaon){
+ ppid[AliPID::kKaon]=1.;
+ ppid[AliPID::kPion]=0.;
+ }
+ }
+ outtrack.SetITSpid(ppid);
+ outtrack.SetESDpid(ppid);
+ }
+ event->AddTrack(&outtrack);
+
+ return;
+}
//_______________________________________________________
Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){
//function used to to find the clusters associated to the track
- if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(layer)) return 0;
+ if(ForceSkippingOfLayer(layer)) return 0;
+
Int_t nc=0;
AliITSlayer &lay = fgLayers[layer];
Double_t r=lay.GetR();
if(pflag==1){
- Float_t cx1,cx2,cy1,cy2;
+ Double_t cx1,cx2,cy1,cy2;
FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3);
if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0)
return 0;
}
- Int_t ncl = fCluLayer[layer]->GetEntries();
- for (Int_t index=0; index<ncl; index++) {
- AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index);
- if (!c) continue;
- if (c->GetQ()<=0) continue;
-
- AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index);
- Double_t phi = arr->GetPhi();
- if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue;
-
- Double_t lambda = arr->GetLambda();
- if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue;
-
- if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0;
- if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0;
- Int_t orind = arr->GetOrInd();
- trs->AddClusterSA(layer,orind);
- trs->AddClusterMark(layer,index);
-
- nc++;
- fLambdac=lambda;
- fPhiEstimate=phi;
-
- fPointc[0]=arr->GetX();
- fPointc[1]=arr->GetY();
+ Double_t phiExpect=fPhiEstimate;
+ Double_t lamExpect=fLambdac;
+ Int_t ncl = fCluCoord[layer]->GetEntriesFast();
+ Int_t startcl=FindIndex(layer,lamExpect-lambdawindow*1.02);
+ Int_t endcl=FindIndex(layer,lamExpect+lambdawindow*1.02)+1;
+ if(endcl>=ncl) endcl=ncl-1;
+
+ for (Int_t index=startcl; index<=endcl; index++) {
+ //for (Int_t index=0; index<ncl; index++) {
+ AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index);
+
+
+ Double_t phi = arr->GetPhi();
+ Double_t deltaPhi = phi-phiExpect;
+ if(deltaPhi>TMath::Pi()) deltaPhi-=2*TMath::Pi();
+ else if(deltaPhi<-TMath::Pi()) deltaPhi+=2*TMath::Pi();
+ if (TMath::Abs(deltaPhi)>phiwindow) continue;
+
+ Double_t lambda = arr->GetLambda();
+ if (TMath::Abs(lambda-lamExpect)>lambdawindow) continue;
+
+ if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0;
+ if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0;
+ Int_t orind = arr->GetOrInd();
+ trs->AddClusterSA(layer,orind);
+ trs->AddClusterMark(layer,index);
+ nc++;
+ fLambdac=lambda;
+ fPhiEstimate=phi;
+
+ fPointc[0]=arr->GetX();
+ fPointc[1]=arr->GetY();
+
}
return nc;
}
+//________________________________________________________________
+Bool_t AliITStrackerSA::SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex){
+ // Sets the first point (seed) for tracking
+
+ AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(lay,clu);
+ fPhic = arr->GetPhi();
+ fLambdac = arr->GetLambda();
+ fPhiEstimate = fPhic;
+ fPoint1[0]=primaryVertex[0];
+ fPoint1[1]=primaryVertex[1];
+ fPoint2[0]=arr->GetX();
+ fPoint2[1]=arr->GetY();
+ return kTRUE;
+}
+
//________________________________________________________________
void AliITStrackerSA::UpdatePoints(){
//update of points for the estimation of the curvature
}
//___________________________________________________________________
-Int_t AliITStrackerSA::FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2, Float_t x3, Float_t y3,Float_t& a, Float_t& b, Float_t& c){
+Int_t AliITStrackerSA::FindEquation(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Double_t x3, Double_t y3,Double_t& a, Double_t& b, Double_t& c){
//given (x,y) of three recpoints (in global coordinates)
//returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c
-
- Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1);
+ double dx31=x3-x1,dy31=y3-y1,dx21=x2-x1,dy21=y2-y1;
+ Double_t den = dx31*dy21-dx21*dy31;
if(den==0) return 0;
- a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den;
- b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1);
+ else den = 1./den;
+ //
+ double r31 = -dx31*(x1+x3) - dy31*(y1+y3);
+ double r21 = -dx21*(x1+x2) - dy21*(y1+y2);
+ //
+ double da = r31*dy21 - r21*dy31;
+ double db = r21*dx31 - r31*dx21;
+ a = da*den;
+ b = db*den;
c = -x1*x1-y1*y1-a*x1-b*y1;
return 1;
}
//__________________________________________________________________________
- Int_t AliITStrackerSA::FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2){
+ Int_t AliITStrackerSA::FindIntersection(Double_t a1, Double_t b1, Double_t c1, Double_t c2,Double_t& x1,Double_t& y1, Double_t& x2, Double_t& y2){
//Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer
//c2 is -rlayer*rlayer
}
//__________________________________________________________
-Int_t AliITStrackerSA::FindLabel(Int_t l0, Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5){
-
- //function used to determine the track label
-
- Int_t lb[6] = {l0,l1,l2,l3,l4,l5};
- Int_t aa[6]={1,1,1,1,1,1};
- Int_t ff=0;
- Int_t ll=0;
- Int_t k=0;Int_t w=0;Int_t num=6;
- for(Int_t i=5;i>=0;i--) if(lb[i]==-1) num=i;
-
- while(k<num){
+Int_t AliITStrackerSA::FindLabel(AliITStrackV2* track){
+ // compute the track label starting from cluster labels
- for(Int_t i=k+1;i<num;i++){
-
- if(lb[k]==lb[i] && aa[k]!=0){
-
- aa[k]+=1;
- aa[i]=0;
- }
+ Int_t labl[AliITSgeomTGeo::kNLayers][3];
+ Int_t cnts[AliITSgeomTGeo::kNLayers][3];
+ for(Int_t j=0;j<AliITSgeomTGeo::GetNLayers();j++){
+ for(Int_t k=0;k<3;k++){
+ labl[j][k]=-2;
+ cnts[j][k]=1;
}
- k++;
}
-
- while(w<num){
-
- for(Int_t j=0;j<6;j++){
- if(aa[w]<aa[j]){
- ff=aa[w];
- aa[w]=aa[j];
- aa[j]=ff;
- ll=lb[w];
- lb[w]=lb[j];
- lb[j]=ll;
- }
+ Int_t iNotLabel=0;
+ for(Int_t i=0;i<track->GetNumberOfClusters(); i++) {
+ Int_t indexc = track->GetClusterIndex(i);
+ AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc);
+ Int_t iLayer=cl->GetLayer();
+ for(Int_t k=0;k<3;k++){
+ labl[iLayer][k]=cl->GetLabel(k);
+ if(labl[iLayer][k]<0) iNotLabel++;
+ }
+ }
+ if(iNotLabel==3*track->GetNumberOfClusters()) return -2;
+
+ for(Int_t j1=0;j1<AliITSgeomTGeo::kNLayers; j1++) {
+ for(Int_t j2=0; j2<j1; j2++){
+ for(Int_t k1=0; k1<3; k1++){
+ for(Int_t k2=0; k2<3; k2++){
+ if(labl[j1][k1]>=0 && labl[j1][k1]==labl[j2][k2] && cnts[j2][k2]>0){
+ cnts[j2][k2]++;
+ cnts[j1][k1]=0;
+ }
+ }
+ }
}
- w++;
}
-
- if(num<1) return -1;
- return lb[num-1];
-}
-
-//_____________________________________________________________________________
-Int_t AliITStrackerSA::Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5, Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11,
-Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, Int_t gl17, Int_t gl18, Int_t minNPoints){
-
-
- //function used to assign label to the found track. If track is fake, the label is negative
- Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6};
- Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12};
- Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18};
- Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]);
- Int_t lflag=0;Int_t num=6;
- if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5;
- for(Int_t i=0;i<num;i++){
- if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1;
+ Int_t cntMax=0;
+ Int_t label=-1;
+ for(Int_t j=0;j<AliITSgeomTGeo::kNLayers;j++){
+ for(Int_t k=0;k<3;k++){
+ if(cnts[j][k]>cntMax && labl[j][k]>=0){
+ cntMax=cnts[j][k];
+ label=labl[j][k];
+ }
+ }
}
- if(lflag>=minNPoints) return ll;
- else return -ll;
-
+ Int_t lflag=0;
+ for(Int_t i=0;i<AliITSgeomTGeo::kNLayers;i++)
+ if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++;
+ if(lflag<track->GetNumberOfClusters()) label = -label;
+ return label;
}
//_____________________________________________________________________________
-void AliITStrackerSA::SetCalculatedWindowSizes(Int_t n, Float_t phimin, Float_t phimax, Float_t lambdamin, Float_t lambdamax){
+void AliITStrackerSA::SetCalculatedWindowSizes(Int_t n, Double_t phimin, Double_t phimax, Double_t lambdamin, Double_t lambdamax){
// Set sizes of the phi and lambda windows used for track finding
fNloop = n;
if(fPhiWin) delete [] fPhiWin;
if(fLambdaWin) delete [] fLambdaWin;
fPhiWin = new Double_t[fNloop];
fLambdaWin = new Double_t[fNloop];
- Float_t stepPhi=(phimax-phimin)/(Float_t)(fNloop-1);
- Float_t stepLambda=(lambdamax-lambdamin)/(Float_t)(fNloop-1);
+ Double_t stepPhi=(phimax-phimin)/(Double_t)(fNloop-1);
+ Double_t stepLambda=(lambdamax-lambdamin)/(Double_t)(fNloop-1);
for(Int_t k=0;k<fNloop;k++){
- Float_t phi=phimin+k*stepPhi;
- Float_t lam=lambdamin+k*stepLambda;
+ Double_t phi=phimin+k*stepPhi;
+ Double_t lam=lambdamin+k*stepLambda;
fPhiWin[k]=phi;
fLambdaWin[k]=lam;
}
}
else { // default values
- Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047,
- 0.005,0.0053,0.0055,
- 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077,
- 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097,
- 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145};
- Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005,
- 0.005,0.005,0.006,
- 0.006,0.006,0.006,0.007,0.007,0.007,0.007,
- 0.007,0.007,0.007,0.007,0.007,0.007,0.007,
- 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008};
+ Double_t phid[32] = {0.002,0.003,0.004,0.0045,0.0047,
+ 0.005,0.0053,0.0055,0.006,0.0063,
+ 0.0065,0.007,0.0073,0.0075,0.0077,
+ 0.008,0.0083,0.0085,0.0087,0.009,
+ 0.0095,0.0097,0.01,0.0105,0.011,
+ 0.0115,0.012,0.0125,0.013,0.0135,
+ 0.0140,0.0145};
+ Double_t lambdad[32] = {0.003,0.004,0.005,0.005,0.005,
+ 0.005,0.005,0.006,0.006,0.006,
+ 0.006,0.007,0.007,0.007,0.007,
+ 0.007,0.007,0.007,0.007,0.007,
+ 0.007,0.007,0.008,0.008,0.008,
+ 0.008,0.008,0.008,0.008,0.008,
+ 0.008,0.008};
- if(fNloop!=33){
- fNloop = 33;
+ if(fNloop!=32){
+ fNloop = 32;
}
}
//_______________________________________________________________________
-void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){
+void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Double_t &x, Double_t &y,Double_t &z, const Double_t* vertex){
//Returns values of phi (azimuthal) and lambda angles for a given cluster
/*
Double_t rot[9]; fGeom->GetRotMatrix(module,rot);
Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det);
- Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz);
+ Double_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz);
Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
Double_t phi1=TMath::Pi()/2+alpha;
if (lay==1) phi1+=TMath::Pi();
- Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1);
- Float_t r=tx*cp+ty*sp;
+ Double_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1);
+ Double_t r=tx*cp+ty*sp;
xyz= r*cp - cl->GetY()*sp;
y= r*sp + cl->GetY()*cp;
}
//________________________________________________________________________
-void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){
+void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Double_t &sx,Double_t &sy, Double_t &sz){
//returns sigmax, y, z of cluster in global coordinates
/*
Double_t phi=TMath::Pi()/2+alpha;
if (lay==1) phi+=TMath::Pi();
- Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi);
+ Double_t cp=TMath::Cos(phi), sp=TMath::Sin(phi);
*/
Float_t covm[6];
cl->GetGlobalCov(covm);
sz = TMath::Sqrt(cl->GetSigmaZ2());
*/
}
+
+//________________________________________________________________________
+Int_t AliITStrackerSA::FindIndex(Int_t lay, Double_t lamVal) const {
+ // Find the cluster at limit of lambda window
+
+ Int_t base = 0;
+ Int_t last = fCluCoord[lay]->GetEntriesFast()-1;
+ if(last<0) return 0;
+ Int_t position;
+ Double_t lamfirst=((AliITSclusterTable*)fCluCoord[lay]->At(base))->GetLambda();
+ if(lamfirst>lamVal) return base;
+ Double_t lamlast=((AliITSclusterTable*)fCluCoord[lay]->At(last))->GetLambda();
+ if(lamlast<=lamVal) return last;
+ while (last >= base) {
+ position = (base+last) / 2;
+ Double_t a=((AliITSclusterTable*)fCluCoord[lay]->At(position))->GetLambda()-lamVal;
+ Double_t b=((AliITSclusterTable*)fCluCoord[lay]->At(position+1))->GetLambda()-lamVal;
+ if(a*b<=0) return position;
+ if(a>0) last = position;
+ else base = position;
+ }
+ return 0;
+}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff