* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
+////////////////////////////////////////////////////////////////////////////
+// //
+// Base Class used to find //
+// the reconstructed points for ITS //
+// See also AliITSClusterFinderSPD, AliITSClusterFinderSDD, //
+// AliITSClusterFinderSDD AliITSClusterFinderV2 //
+////////////////////////////////////////////////////////////////////////////
#include "AliITSClusterFinder.h"
-#include "AliRun.h"
-#include "AliITS.h"
+#include "AliITSRecPoint.h"
+#include "AliITSdigit.h"
+#include "AliITSDetTypeRec.h"
+#include "AliITSMap.h"
ClassImp(AliITSClusterFinder)
//----------------------------------------------------------------------
-AliITSClusterFinder::AliITSClusterFinder(){
+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){
// default cluster finder
-
- fSegmentation = 0;
- fResponse = 0;
- fMap = 0;
- fDigits = 0;
- fNdigits = 0;
- fNRawClusters = 0;
- fNperMax = 0;
- fDeclusterFlag= 0;
- fClusterSize = 0;
- fNPeaks = 0;
+ // Input:
+ // none.
+ // Output:
+ // none.
+ // Return:
+ // A default constructed AliITSCulsterFinder
}
//----------------------------------------------------------------------
-AliITSClusterFinder::AliITSClusterFinder(AliITSsegmentation *seg,
- AliITSresponse *response,
- TClonesArray *digits){
- // cluster finder
- fSegmentation=seg;
- fResponse=response;
- fMap = 0;
-
- fDigits=digits;
- fNdigits = fDigits->GetEntriesFast();
+AliITSClusterFinder::AliITSClusterFinder(AliITSDetTypeRec* dettyp):
+TObject(),
+fDebug(0),
+fModule(0),
+fDigits(0),
+fNdigits(0),
+fClusters(0),
+fNRawClusters(0),
+fMap(0),
+fNperMax(0),
+fDeclusterFlag(0),
+fClusterSize(0),
+fNPeaks(-1){
+ // Standard constructor for cluster finder
+ // Input:
+ // AliITSsegmentation *seg The segmentation class to be used
+ // AliITSresponse *res The response class to be used
+ // Output:
+ // none.
+ // Return:
+ // A Standard constructed AliITSCulsterFinder
- fNRawClusters=0;
+ 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){
+ // Standard + cluster finder constructor
+ // Input:
+ // AliITSsegmentation *seg The segmentation class to be used
+ // AliITSresponse *res The response class to be used
+ // TClonesArray *digits Array of digits to be used
+ // Output:
+ // none.
+ // Return:
+ // A Standard constructed AliITSCulsterFinder
+ fNdigits = fDigits->GetEntriesFast();
SetNperMax();
SetClusterSize();
SetDeclusterFlag();
+}
+//______________________________________________________________________
+AliITSClusterFinder::AliITSClusterFinder(const AliITSClusterFinder &source) : TObject(source) {
+ // Copy constructor
+ // Copies are not allowed. The method is protected to avoid misuse.
+ Fatal("AliITSClusterFinder","Copy constructor not allowed\n");
+}
- fNPeaks=-1;
+//______________________________________________________________________
+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;
}
+
//----------------------------------------------------------------------
AliITSClusterFinder::~AliITSClusterFinder(){
// destructor cluster finder
+ // Input:
+ // none.
+ // Output:
+ // none.
+ // Return:
+ // none.
+ if(fMap) {delete fMap;}
// Zero local pointers. Other classes own these pointers.
- fSegmentation = 0;
- fResponse = 0;
fMap = 0;
fDigits = 0;
fNdigits = 0;
fDeclusterFlag= 0;
fClusterSize = 0;
fNPeaks = 0;
+ fDetTypeRec = 0;
+
}
//__________________________________________________________________________
-AliITSClusterFinder::AliITSClusterFinder(const AliITSClusterFinder &source){
- // Copy Constructor
- if(&source == this) return;
- this->fDigits = source.fDigits;
- this->fNdigits = source.fNdigits;
- this->fResponse = source.fResponse;
- this->fSegmentation = source.fSegmentation;
- this->fNRawClusters = source.fNRawClusters;
- this->fMap = source.fMap;
- this->fNperMax = source.fNperMax;
- this->fDeclusterFlag = source.fDeclusterFlag;
- this->fClusterSize = source.fClusterSize;
- this->fNPeaks = source.fNPeaks;
+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);
+ fNlayer[m] = lay-1;
+ }
}
-//______________________________________________________________________
-AliITSClusterFinder& AliITSClusterFinder::operator=(const AliITSClusterFinder &source) {
- // Assignment operator
-
- if(&source == this) return *this;
- this->fDigits = source.fDigits;
- this->fNdigits = source.fNdigits;
- this->fResponse = source.fResponse;
- this->fSegmentation = source.fSegmentation;
- this->fNRawClusters = source.fNRawClusters;
- this->fMap = source.fMap;
- this->fNperMax = source.fNperMax;
- this->fDeclusterFlag = source.fDeclusterFlag;
- this->fClusterSize = source.fClusterSize;
- this->fNPeaks = source.fNPeaks;
- return *this;
-}
+
+
+
//----------------------------------------------------------------------
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.
- AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
- iTS->AddCluster(branch,c);
- fNRawClusters++;
+ 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
+ // 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.
+ // If so, then it returns kTRUE and its neighbor index j.
+ // This routine checks if the digits are side by side or one before the
+ // other. Requires that the array of digits be in proper order.
+ // Returns kTRUE in the following cases.
+ // ji 0j if kdiagonal j0 0i
+ // 00 0i if kdiagonal 0i j0
+ // Inputs:
+ // TObjArray *digs Array to search for neighbors in
+ // Int_t i Index of digit for which we are searching for
+ // a neighbor of.
+ // Output:
+ // Int_t j[4] Index of one or more of the digits which is a
+ // neighbor of digit a index i.
+ // Return:
+ // Bool_t kTRUE if a neighbor was found kFALSE otherwise.
+ Int_t ix,jx,iz,jz,j;
+ const Bool_t kdiagonal=kFALSE;
+ Bool_t nei[4];
+
+ // No neighbors found if array empty.
+ if(digs->GetEntriesFast()<=0) return kFALSE;
+ // can not be a digit with first element or elements out or range
+ if(i<=0 || i>=digs->GetEntriesFast()) return kFALSE;
+
+ for(j=0;j<4;j++){n[j] = -1;nei[j]=kFALSE;}
+ ix = ((AliITSdigit*)(digs->At(i)))->GetCoord1();
+ iz = ((AliITSdigit*)(digs->At(i)))->GetCoord2();
+ for(j=0;j<i;j++){
+ jx = ((AliITSdigit*)(digs->At(j)))->GetCoord1();
+ jz = ((AliITSdigit*)(digs->At(j)))->GetCoord2();
+ if(jx+1==ix && jz ==iz){n[0] = j;nei[0] = kTRUE;}
+ if(jx ==ix && jz+1==iz){n[1] = j;nei[1] = kTRUE;}
+ if(jx+1==ix && jz+1==iz){n[2] = j;nei[2] = kTRUE;}
+ if(jx+1==ix && jz-1==iz){n[3] = j;nei[3] = kTRUE;}
+ } // end for k
+ if(nei[0]||nei[1]) return kTRUE;
+ if(kdiagonal&&(nei[2]||nei[3])) return kTRUE;
+ // no Neighbors found.
+ return kFALSE;
+}
+
+//______________________________________________________________________
+void AliITSClusterFinder::Print(ostream *os) const{
+ //Standard output format for this class
+ // Inputs:
+ // ostream *os Output stream
+ // Output:
+ // ostream *os Output stream
+ // 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
+ // Inputs:
+ // istream *is Input stream
+ // Output:
+ // istream *is Input stream
+ // Return:
+ // none.
+
+ *is >> fDebug;
+ *is >> fModule;
+ *is >> fNdigits;
+ *is >> fNRawClusters;
+ *is >> fNperMax;
+ *is >> fDeclusterFlag;
+ *is >> fClusterSize;
+ *is >> fNPeaks;
+}
+//______________________________________________________________________
+ostream &operator<<(ostream &os,AliITSClusterFinder &source){
+ // Standard output streaming function.
+ // Inputs:
+ // ostream *os Output stream
+ // AliITSClusterFinder &source Class to be printed
+ // Output:
+ // ostream *os Output stream
+ // Return:
+ // none.
+
+ source.Print(&os);
+ return os;
+}
+//______________________________________________________________________
+istream &operator>>(istream &is,AliITSClusterFinder &source){
+ // Standard output streaming function.
+ // Inputs:
+ // istream *is Input stream
+ // AliITSClusterFinder &source Class to be read in.
+ // Output:
+ // istream *is Input stream
+ // Return:
+ // none.
- AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
- iTS->AddCluster(branch,c);
- fNRawClusters++;
- iTS->AddRecPoint(rp);
+ source.Read(&is);
+ return is;
}
+/*
+void AliITSClusterFinder::RecPoints2Clusters
+(const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
+ //------------------------------------------------------------
+ // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
+ // subdetector indexed by idx
+ //------------------------------------------------------------
+ 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);
+ }
+}
+*/
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff