/* $Id$ */
-////////////////////////////////////////////////////
-// 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>
fNloop(0),
fPhiWin(0),
fLambdaWin(0),
-fVert(0),
-fVertexer(0),
fListOfTracks(0),
fListOfSATracks(0),
fITSclusters(0),
fInnerStartLayer(5),
fMinNPoints(0),
fMinQ(0.),
-fCluLayer(0),
fCluCoord(0){
// Default constructor
Init();
fNloop(0),
fPhiWin(0),
fLambdaWin(0),
-fVert(0),
-fVertexer(0),
fListOfTracks(0),
fListOfSATracks(0),
fITSclusters(0),
fInnerStartLayer(5),
fMinNPoints(0),
fMinQ(0.),
-fCluLayer(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),
-fInwardFlag(0),
-fOuterStartLayer(0),
-fInnerStartLayer(5),
-fMinNPoints(0),
-fMinQ(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),
-fInwardFlag(0),
-fOuterStartLayer(0),
-fInnerStartLayer(5),
-fMinNPoints(0),
-fMinQ(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),
-fInwardFlag(tracker.fInwardFlag),
-fOuterStartLayer(tracker.fOuterStartLayer),
-fInnerStartLayer(tracker.fInnerStartLayer),
-fMinNPoints(tracker.fMinNPoints),
-fMinQ(tracker.fMinQ),
-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);
}
}
if(!rc){
rc=FindTracks(event,kFALSE);
- if(AliITSReconstructor::GetRecoParam()->GetSAUseAllClusters()==kTRUE) {
+ 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();
SetSAFlag(kFALSE);
fListOfTracks=new TClonesArray("AliITStrackMI",100);
fListOfSATracks=new TClonesArray("AliITStrackSA",100);
- fCluLayer = 0;
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;
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
//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;
}
}
}
}
dmar[i]=0;
- if(!fCluLayer[i]){
- fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]);
- }else{
- fCluLayer[i]->Delete();
- fCluLayer[i]->Expand(nclusters[i]);
- }
if(!fCluCoord[i]){
fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]);
}else{
}
for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){
- TClonesArray &clulay = *fCluLayer[ilay];
TClonesArray &clucoo = *fCluCoord[ilay];
AliITSlayer &layer=fgLayers[ilay];
if (!ForceSkippingOfLayer(ilay)) {
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
// loop on phi and lambda window size
for(Int_t nloop=0;nloop<fNloop;nloop++){
- Int_t nclTheLay=fCluLayer[theLay]->GetEntries();
+ Int_t nclTheLay=fCluCoord[theLay]->GetEntries();
while(nclTheLay--){
ResetForFinding();
Bool_t useRP=SetFirstPoint(theLay,nclTheLay,primaryVertex);
&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],
// 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();
Bool_t useRP=SetFirstPoint(innLay,nclInnLay,primaryVertex);
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 end[AliITSgeomTGeo::kNLayers];
+ static Int_t indices[AliITSgeomTGeo::kNLayers];
+
static AliITSRecPoint *listlayer[AliITSgeomTGeo::kNLayers][kMaxClu];
for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
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));
}
-
+ // create track and attach it the RecPoints
AliITStrackSA trac(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]);
+ 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()
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();
}
}
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;
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;
- if(layer>1 && c->GetQ()<=fMinQ) 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
- AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[lay]->At(clu);
- if(!cl) return kFALSE;
- if (cl->GetQ()<=0) return kFALSE;
- if(lay>1 && cl->GetQ()<=fMinQ) return kFALSE;
-
AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(lay,clu);
fPhic = arr->GetPhi();
fLambdac = arr->GetLambda();
}
//___________________________________________________________________
-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(AliITStrackV2* track){
- //
+ // compute the track label starting from cluster labels
Int_t labl[AliITSgeomTGeo::kNLayers][3];
Int_t cnts[AliITSgeomTGeo::kNLayers][3];
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);
*/
}
+//________________________________________________________________________
+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