fTracks=0;
fNtinit=0;
fTrackCopy=0;
+ fSelected=0;
}
///////////////////////////////////////////////////////////////////////////
AliJet::AliJet(Int_t n) : TNamed(),Ali4Vector()
delete fTracks;
fTracks=0;
}
+ if (fSelected)
+ {
+ delete fSelected;
+ fSelected=0;
+ }
}
///////////////////////////////////////////////////////////////////////////
void AliJet::SetOwner(Bool_t own)
fTrackCopy=j.fTrackCopy;
fUserId=j.fUserId;
+ fSelected=0;
+
fTracks=0;
if (fNtrk)
{
if (strlen(title)) cout << " Title : " << GetTitle();
cout << endl;
cout << " Id : " << fUserId << " Invmass : " << GetInvmass() << " Charge : " << fQ
- << " Momentum : " << GetMomentum() << " Ntracks : " << fNtrk << endl;
+ << " Momentum : " << GetMomentum() << endl;
+
+ ShowTracks(0);
Ali4Vector::Data(f);
}
AliTrack* AliJet::GetTrack(Int_t i) const
{
// Return the i-th track of this jet
- if (!fTracks)
+
+ if (!fTracks) return 0;
+
+ if (i<=0 || i>fNtrk)
{
- cout << " *AliJet*::GetTrack* No tracks present." << endl;
+ cout << " *AliJet*::GetTrack* Invalid argument i : " << i
+ << " Ntrk = " << fNtrk << endl;
return 0;
}
else
{
- if (i<=0 || i>fNtrk)
- {
- cout << " *AliJet*::GetTrack* Invalid argument i : " << i
- << " Ntrk = " << fNtrk << endl;
- return 0;
- }
- else
- {
- return (AliTrack*)fTracks->At(i-1);
- }
+ return (AliTrack*)fTracks->At(i-1);
}
}
///////////////////////////////////////////////////////////////////////////
return 0; // No matching id found
}
///////////////////////////////////////////////////////////////////////////
+TObjArray* AliJet::GetTracks(Int_t idmode,Int_t chmode,Int_t pcode)
+{
+// Provide references to user selected tracks based on the idmode, chmode
+// and pcode selections as specified by the user.
+//
+// The following selection combinations are available :
+// ----------------------------------------------------
+// idmode = -1 ==> Select tracks with negative user identifier "id"
+// 0 ==> No selection on user identifier
+// 1 ==> Select tracks with positive user identifier "id"
+//
+// chmode = -1 ==> Select tracks with negative charge
+// 0 ==> Select neutral tracks
+// 1 ==> Select tracks with positive charge
+// 2 ==> No selection on charge
+//
+// pcode = 0 ==> No selection on particle code
+// X ==> Select tracks with particle code +X or -X
+// This allows selection of both particles and anti-particles
+// in case of PDG particle codes.
+// Selection of either particles or anti-particles can be
+// obtained in combination with the "chmode" selector.
+//
+// Examples :
+// ----------
+// idmode=-1 chmode=0 pcode=0 : Selection of all neutral tracks with negative id.
+// idmode=0 chmode=2 pcode=211 : Selection of all charged pions (PDG convention).
+// idmode=0 chmode=1 pcode=321 : Selection of all positive kaons (PDG convention).
+//
+// The default values are idmode=0 chmode=2 pcode=0 (i.e. no selections applied).
+//
+// Notes :
+// -------
+// 1) In case the user has labeled simulated tracks with negative id and
+// reconstructed tracks with positive id, this memberfunction provides
+// easy access to either all simulated or reconstructed tracks.
+// 2) Subsequent invokations of this memberfunction with e.g. chmode=-1 and chmode=1
+// provides a convenient way to investigate particle pairs with opposite charge
+// (e.g. for invariant mass analysis).
+
+ if (fSelected)
+ {
+ fSelected->Clear();
+ }
+ else
+ {
+ fSelected=new TObjArray();
+ }
+
+ if (!fTracks) return fSelected;
+
+ AliTrack* tx=0;
+ Int_t code=0;
+ Int_t id=0;
+ Float_t q=0;
+ for (Int_t i=0; i<fNtrk; i++)
+ {
+ tx=(AliTrack*)fTracks->At(i);
+ if (!tx) continue;
+
+ code=tx->GetParticleCode();
+ if (pcode && abs(pcode)!=abs(code)) continue;
+
+ id=tx->GetId();
+ if (idmode==-1 && id>=0) continue;
+ if (idmode==1 && id<=0) continue;
+
+ q=tx->GetCharge();
+ if (chmode==-1 && q>=0) continue;
+ if (chmode==0 && fabs(q)>1e-10) continue;
+ if (chmode==1 && q<=0) continue;
+
+ fSelected->Add(tx);
+ }
+
+ return fSelected;
+}
+///////////////////////////////////////////////////////////////////////////
+void AliJet::ShowTracks(Int_t mode) const
+{
+// Provide an overview of the available tracks.
+// The argument mode determines the amount of information as follows :
+// mode = 0 ==> Only printout of the number of tracks
+// 1 ==> Provide a listing with 1 line of info for each track
+//
+// The default is mode=1.
+//
+ Int_t ntk=GetNtracks();
+ if (ntk)
+ {
+ if (!mode)
+ {
+ cout << " There are " << ntk << " tracks available." << endl;
+ }
+ else
+ {
+ cout << " The following " << ntk << " tracks are available :" << endl;
+ for (Int_t i=1; i<=ntk; i++)
+ {
+ AliTrack* tx=GetTrack(i);
+ if (tx)
+ {
+ const char* name=tx->GetName();
+ const char* title=tx->GetTitle();
+ cout << " Track : " << i;
+ cout << " Id : " << tx->GetId();
+ cout << " Q : " << tx->GetCharge() << " m : " << tx->GetMass() << " p : " << tx->GetMomentum();
+ if (strlen(name)) cout << " Name : " << name;
+ if (strlen(title)) cout << " Title : " << title;
+ cout << endl;
+ }
+ }
+ }
+ }
+ else
+ {
+ cout << " No tracks are present." << endl;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
Double_t AliJet::GetPt()
{
// Provide trans. momentum value w.r.t. z-axis.
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff