* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.3 1999/09/29 09:24:28 fca
-Introduction of the Copyright and cvs Log
-
-*/
+// $Id$
///////////////////////////////////////////////////////////////////////////
// Class AliVertex
//
// Note : Also (secondary) vertices can be added to a vertex.
//
+// To provide maximal flexibility to the user, two modes of vertex storage
+// are provided by means of the memberfunction SetVertexCopy().
+// The same holds for the storage of jets via SetJetCopy().
+//
+// a) SetVertexCopy(0) (which is the default).
+// Only the pointers of the 'added' vertices are stored.
+// This mode is typically used by making vertex studies based on a fixed list
+// of vertices which stays under user control or is contained for instance
+// in an AliEvent.
+// In this way the AliVertex just represents a 'logical structure' for the
+// physics analysis which can be embedded in e.g. an AliEvent or AliVertex.
+//
+// Note :
+// Modifications made to the original vertices also affect the AliVertex objects
+// which are stored.
+//
+// b) SetVertexCopy(1).
+// Of every 'added' vertex a private copy will be made of which the pointer
+// will be stored.
+// In this way the AliVertex represents an entity on its own and modifications
+// made to the original vertices do not affect the AliVertex objects which are
+// stored.
+// This mode will allow 'adding' many different AliVertex objects by
+// creating only one AliVertex instance in the main programme and using the
+// AliVertex::Reset, AliVertex::AddTrack and parameter setting memberfunctions.
+//
+// See also the documentation provided for the memberfunction SetOwner().
+//
// Coding example to make 3 vertices v1, v2 and v3.
// ------------------------------------------------
// v1 contains the tracks 1,2,3 and 4
-// v2 contains the tracks 5,6 and 7
+// v2 contains many different tracks
// v3 contains the jets 1 and 2
//
-// AliTrack t1,t2,t3,t4,t5,t6,t7;
+// AliTrack t1,t2,t3,t4;
// ...
// ... // code to fill the track data
// ...
// ... // code to fill the jet data
// ...
//
-// AliVertex v1(5);
+// AliVertex v1;
+// v1.SetVertexCopy(1);
//
-// v1.Add(t1);
-// v1.Add(t2);
-// v1.Add(t3);
-// v1.Add(t4);
+// v1.AddTrack(t1);
+// v1.AddTrack(t2);
+// v1.AddTrack(t3);
+// v1.AddTrack(t4);
//
// Float_t r1[3]={2.4,0.1,-8.5};
// v1.SetPosition(r1,"car");
//
-// AliVertex v2(2);
-// v2.Add(t5);
-// v2.Add(t6);
-// v2.Add(t7);
+// AliVertex v2;
+// v2.SetTrackCopy(1);
+//
+// AliTrack* tx=new AliTrack();
+// for (Int_t i=0; i<10; i++)
+// {
+// ...
+// ... // code to fill the track data
+// ...
+// v2.AddTrack(tx);
+// tx->Reset();
+// }
//
// Float_t r2[3]={1.6,-3.2,5.7};
// v2.SetPosition(r2,"car");
//
// AliVertex v3;
//
-// v3.Add(j1);
-// v3.Add(j2);
+// v3.AddJet(j1);
+// v3.AddJet(j2);
//
// Float_t r3[3]={6.2,4.8,1.3};
// v3.SetPosition(r3,"car");
//
-// v1.Info("sph");
+// v1.Data("sph");
// v2.ListAll();
// v3.List("cyl");
//
// Float_t loc[3];
// v1.GetPosition(loc,"sph");
// AliPosition r=v2.GetPosition();
-// r.Info();
+// r.Data();
// Int_t nt=v2.GetNtracks();
// AliTrack* tv=v2.GetTrack(1); // Access track number 1 of Vertex v2
//
// Specify the vertices v2 and v3 as secondary vertices of v1
//
-// v1.Add(v2);
-// v1.Add(v3);
+// v1.AddVertex(v2);
+// v1.AddVertex(v3);
//
// v1.List();
//
//
// v1.Reset();
// v1.SetNvmax(25); // Increase initial no. of sec. vertices
-// v1.Add(t3);
-// v1.Add(t7);
-// v1.Add(j2);
+// v1.AddTrack(t3);
+// v1.AddTrack(t4);
+// v1.AddJet(j2);
// Float_t pos[3]={7,9,4};
// v1.SetPosition(pos,"car");
//
-// Note : All quantities are in GeV, GeV/c or GeV/c**2
+// Note : By default all quantities are in meter, GeV, GeV/c or GeV/c**2
+// but the user can indicate the usage of a different scale for
+// the metric and/or energy-momentum units via the SetUnitScale()
+// and SetEscale() memberfunctions, respectively.
+// The actual metric and energy-momentum unit scales in use can be
+// obtained via the GetUnitScale() and GetEscale() memberfunctions.
//
//--- Author: Nick van Eijndhoven 04-apr-1998 UU-SAP Utrecht
-//- Modified: NvE 08-apr-1999 UU-SAP Utrecht to inherit from AliJet
+//- Modified: NvE $Date$ UU-SAP Utrecht
///////////////////////////////////////////////////////////////////////////
+#include <cstdlib>
#include "AliVertex.h"
+#include "Riostream.h"
ClassImp(AliVertex) // Class implementation to enable ROOT I/O
-AliVertex::AliVertex()
+AliVertex::AliVertex() : AliJet(),AliPosition()
{
// Default constructor.
// All variables initialised to 0.
// Initial maximum number of tracks is set to the default value.
// Initial maximum number of sec. vertices is set to the default value.
- fNvmax=0;
- fVertices=0;
+ Init();
Reset();
- SetNtinit();
SetNvmax();
+ SetNjmax();
}
///////////////////////////////////////////////////////////////////////////
-AliVertex::AliVertex(Int_t n)
+void AliVertex::Init()
{
-// Create a vertex to hold initially a maximum of n tracks
-// All variables initialised to 0
+// Initialisation of pointers etc...
fNvmax=0;
fVertices=0;
- Reset();
- if (n > 0)
- {
- SetNtinit(n);
- }
- else
+ fConnects=0;
+ fVertexCopy=0;
+ fNjmax=0;
+ fJets=0;
+ fJetTracks=0;
+ fJetCopy=0;
+ fLines=0;
+}
+///////////////////////////////////////////////////////////////////////////
+AliVertex::AliVertex(Int_t n) : AliJet(n),AliPosition()
+{
+// Create a vertex to hold initially a maximum of n tracks
+// All variables initialised to 0
+ if (n<=0)
{
- cout << endl;
- cout << " *AliVertex* Initial max. number of tracks entered : " << n << endl;
- cout << " This is invalid. Default initial maximum will be used." << endl;
- cout << endl;
- SetNtinit();
+ cout << " *** This AliJet initialisation was invoked via the AliVertex ctor." << endl;
}
+ Init();
+ Reset();
SetNvmax();
+ SetNjmax();
}
///////////////////////////////////////////////////////////////////////////
AliVertex::~AliVertex()
{
// Default destructor
- if (fVertices) delete fVertices;
- fVertices=0;
+ if (fVertices)
+ {
+ delete fVertices;
+ fVertices=0;
+ }
+ if (fConnects)
+ {
+ delete fConnects;
+ fConnects=0;
+ }
+ if (fJets)
+ {
+ delete fJets;
+ fJets=0;
+ }
+ if (fJetTracks)
+ {
+ delete fJetTracks;
+ fJetTracks=0;
+ }
+ if (fLines)
+ {
+ delete fLines;
+ fLines=0;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::SetOwner(Bool_t own)
+{
+// Set ownership of all added objects.
+// The default parameter is own=kTRUE.
+//
+// Invokation of this memberfunction also sets all the copy modes
+// (e.g. TrackCopy & co.) according to the value of own.
+//
+// This function (with own=kTRUE) is particularly useful when reading data
+// from a tree/file, since Reset() will then actually remove all the
+// added objects from memory irrespective of the copy mode settings
+// during the tree/file creation process. In this way it provides a nice way
+// of preventing possible memory leaks in the reading/analysis process.
+//
+// In addition this memberfunction can also be used as a shortcut to set all
+// copy modes in one go during a tree/file creation process.
+// However, in this case the user has to take care to only set/change the
+// ownership (and copy mode) for empty objects (e.g. newly created objects
+// or after invokation of the Reset() memberfunction) otherwise it will
+// very likely result in inconsistent destructor behaviour.
+
+ Int_t mode=1;
+ if (!own) mode=0;
+ if (fVertices) fVertices->SetOwner(own);
+ fVertexCopy=mode;
+ if (fJets) fJets->SetOwner(own);
+ fJetCopy=mode;
+
+ AliJet::SetOwner(own);
+}
+///////////////////////////////////////////////////////////////////////////
+AliVertex::AliVertex(const AliVertex& v) : AliJet(v.fNtinit),AliPosition(v)
+{
+// Copy constructor
+ Init();
+ fNvtx=0;
+ fNjets=0;
+ SetNvmax(v.fNvmax);
+ SetNjmax(v.fNjmax);
+ SetTrackCopy(v.GetTrackCopy());
+ SetVertexCopy(v.GetVertexCopy());
+ SetJetCopy(v.GetJetCopy());
+ SetId(v.GetId());
+
+ // Copy all tracks except the ones coming from jets
+ AliTrack* tx=0;
+ Int_t jetflag=0,connect=0;
+ AliTrack* tx2=0;
+ for (Int_t it=1; it<=v.fNtrk; it++)
+ {
+ tx=v.GetTrack(it);
+ if (tx)
+ {
+ jetflag=v.IsJetTrack(tx);
+ connect=v.IsConnectTrack(tx);
+
+ if (!jetflag && !connect) AddTrack(tx);
+
+ if (connect)
+ {
+ if (!fConnects)
+ {
+ fConnects=new TObjArray(fNvmax);
+ if (!fTrackCopy) fConnects->SetOwner();
+ }
+ tx2=new AliTrack(*tx);
+ fConnects->Add(tx2);
+ AddTrack(tx2,0);
+ }
+ }
+ }
+
+ // Copy all the (secondary) vertices without re-creating connecting tracks
+ // The connecting tracks have already been copied above
+ AliVertex* vx=0;
+ for (Int_t iv=1; iv<=v.GetNvertices(); iv++)
+ {
+ vx=v.GetVertex(iv);
+ if (vx) AddVertex(vx,0);
+ }
+
+ // Copy all the jets including the jet tracks for these jets for which
+ // this was also the case in the original vertex
+ AliJet* jx=0;
+ for (Int_t ij=1; ij<=v.GetNjets(); ij++)
+ {
+ jx=v.GetJet(ij);
+ if (jx)
+ {
+ jetflag=0;
+ if (jx->GetNtracks())
+ {
+ tx=jx->GetTrack(1);
+ if (tx)
+ {
+ jetflag=v.IsJetTrack(tx);
+ }
+ }
+ AddJet(jx,jetflag);
+ }
+ }
}
///////////////////////////////////////////////////////////////////////////
void AliVertex::SetNvmax(Int_t n)
{
fNvmax=1;
}
- if (fVertices) delete fVertices;
- fVertices=new TObjArray(fNvmax);
+ if (fVertices)
+ {
+ delete fVertices;
+ fVertices=0;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::SetNjmax(Int_t n)
+{
+// Set the initial maximum number of jets
+ if (n > 0)
+ {
+ fNjmax=n;
+ }
+ else
+ {
+ fNjmax=1;
+ }
+ if (fJets)
+ {
+ delete fJets;
+ fJets=0;
+ }
}
///////////////////////////////////////////////////////////////////////////
void AliVertex::Reset()
{
-// Reset all variables to 0
+// Reset all variables to 0 and reset all stored vertex and jet lists.
// The max. number of tracks is set to the initial value again
// The max. number of vertices is set to the default value again
+// The max. number of jets is set to the default value again
AliJet::Reset();
+ Double_t a[3]={0,0,0};
+ SetPosition(a,"sph");
+ SetPositionErrors(a,"car");
+
fNvtx=0;
if (fNvmax>0) SetNvmax(fNvmax);
+ if (fConnects)
+ {
+ delete fConnects;
+ fConnects=0;
+ }
+
+ fNjets=0;
+ if (fNjmax>0) SetNjmax(fNjmax);
+ if (fJetTracks)
+ {
+ delete fJetTracks;
+ fJetTracks=0;
+ }
+
+ if (fLines)
+ {
+ delete fLines;
+ fLines=0;
+ }
}
///////////////////////////////////////////////////////////////////////////
-void AliVertex::Add(AliJet& j)
+void AliVertex::ResetVertices()
{
-// Add the tracks of a jet to the vertex
- AliTrack* tj;
- for (Int_t i=1; i<=j.GetNtracks(); i++)
+// Reset the stored vertex list and delete all connecting tracks which
+// were generated automatically via connect=1 in AddVertex().
+// The max. number of vertices is set to the default value again.
+// All physics quantities are updated according to the removal of the
+// connecting tracks.
+ AliTrack* t;
+ if (fConnects)
+ {
+ for (Int_t i=0; i<=fConnects->GetLast(); i++)
+ {
+ t=(AliTrack*)fConnects->At(i);
+ AliTrack* test=(AliTrack*)fTracks->Remove(t);
+ if (test)
+ {
+ fNtrk--;
+ (Ali4Vector&)(*this)-=(Ali4Vector&)(*t);
+ fQ-=t->GetCharge();
+ if (fTrackCopy) delete t;
+ }
+ }
+ fTracks->Compress();
+ }
+
+ fNvtx=0;
+ if (fNvmax>0) SetNvmax(fNvmax);
+ if (fConnects)
+ {
+ delete fConnects;
+ fConnects=0;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::AddJet(AliJet& j,Int_t tracks)
+{
+// Add a jet (and its tracks) to the vertex
+// In case the maximum number of jets has been reached,
+// the array space will be extended automatically
+//
+// Note : By default the tracks of the jet are added to the current (primary)
+// vertex.
+// The automatic addition of the tracks of the jet can be suppressed
+// by specifying tracks=0. In this case only the AliJet object will
+// be stored according to the mode specified by SetJetCopy().
+// The latter will enable jet studies based on a fixed list of tracks
+// as contained e.g. in an AliVertex or AliEvent.
+//
+// In case a private copy is made, this is performed via the Clone() memberfunction.
+// All AliJet and derived classes have the default TObject::Clone() memberfunction.
+// However, derived classes generally contain an internal data structure which may
+// include pointers to other objects. Therefore it is recommended to provide
+// for all derived classes a specific copy constructor and override the default Clone()
+// memberfunction using this copy constructor.
+// An example for this may be seen from AliJet.
+
+ if (!fJets)
+ {
+ fJets=new TObjArray(fNjmax);
+ if (fJetCopy) fJets->SetOwner();
+ }
+ if (fNjets == fNjmax) // Check if maximum jet number is reached
+ {
+ fNjmax++;
+ fJets->Expand(fNjmax);
+ }
+
+ // Add the jet to the list
+ AliJet* jx=&j;
+ if (fJetCopy) jx=(AliJet*)j.Clone();
+
+ if (jx)
+ {
+ fNjets++;
+ fJets->Add(jx);
+ }
+
+ // Add the tracks of the jet to this vertex
+ if (tracks)
{
- tj=j.GetTrack(i);
- AliJet::Add(tj);
+ if (!fJetTracks)
+ {
+ fJetTracks=new TObjArray();
+ }
+ Int_t copy=1-(jx->GetTrackCopy());
+ AliTrack* tj;
+ for (Int_t i=1; i<=jx->GetNtracks(); i++)
+ {
+ tj=jx->GetTrack(i);
+ if (tj)
+ {
+ AddTrack(tj,copy);
+ fJetTracks->Add(tj);
+ }
+ }
}
}
///////////////////////////////////////////////////////////////////////////
-void AliVertex::Add(AliVertex& v)
+void AliVertex::AddVertex(AliVertex& v,Int_t connect)
{
// Add a (secondary) vertex to the current vertex.
// In case the maximum number of (secondary) vertices has been reached,
// the array space will be extended automatically
//
-// Note : The 4-momentum of the current (primary) vertex
-// is updated automatically, but the track connecting
-// both vertices has to be entered separately by the user.
+// Note : By default the 4-momentum and charge of the current (primary) vertex
+// are updated by automatically creating the track connecting
+// both vertices. The track parameters are taken from the
+// 4-momentum and charge of the secondary vertex.
+// The automatic creation of the connecting track and updating
+// of the (primary) vertex 4-momentum and charge can be suppressed
+// by specifying connect=0. In this case, however, the user
+// has to introduce the connecting track lateron by hand
+// explicitly in order to match the kinematics and charge.
//
+// In case a private copy is made, this is performed via the Clone() memberfunction.
+// All AliVertex and derived classes have the default TObject::Clone() memberfunction.
+// However, derived classes generally contain an internal data structure which may
+// include pointers to other objects. Therefore it is recommended to provide
+// for all derived classes a specific copy constructor and override the default Clone()
+// memberfunction using this copy constructor.
+// An example for this may be seen from AliVertex.
+
+ if (!fVertices)
+ {
+ fVertices=new TObjArray(fNvmax);
+ if (fVertexCopy) fVertices->SetOwner();
+ }
if (fNvtx == fNvmax) // Check if maximum vertex number is reached
{
fNvmax++;
fVertices->Expand(fNvmax);
}
-
- // Update 4-momentum for current vertex
- fNvtx++;
- fVertices->Add(&v);
- (Ali4Vector)(*this)+=v;
+
+ // Add the linked (secondary) vertex to the list
+ AliVertex* vx=&v;
+ if (fVertexCopy) vx=(AliVertex*)v.Clone();
+
+ if (vx)
+ {
+ fNvtx++;
+ fVertices->Add(vx);
+ }
+
+ // Create connecting track and update 4-momentum and charge for current vertex
+ if (connect)
+ {
+ AliTrack* t=new AliTrack();
+ t->SetBeginPoint(GetPosition());
+ t->SetEndPoint(v.GetPosition());
+ t->SetCharge(v.GetCharge());
+ t->Set4Momentum((Ali4Vector&)v);
+
+ AddTrack(t,0);
+
+ if (!fConnects)
+ {
+ fConnects=new TObjArray(fNvmax);
+ if (!fTrackCopy) fConnects->SetOwner();
+ }
+ fConnects->Add(t);
+ }
}
///////////////////////////////////////////////////////////////////////////
-void AliVertex::Info(TString f)
+void AliVertex::Data(TString f,TString u)
{
// Provide vertex information within the coordinate frame f
- cout << " *AliVertex::Info* Invmass : " << GetInvmass()
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
+
+ const char* name=GetName();
+ const char* title=GetTitle();
+ cout << " *AliVertex::Data*";
+ if (strlen(name)) cout << " Name : " << GetName();
+ if (strlen(title)) cout << " Title : " << GetTitle();
+ cout << endl;
+ cout << " Id : " << fUserId << " Invmass : " << GetInvmass()
<< " Charge : " << GetCharge() << " Momentum : " << GetMomentum()
- << " Ntracks : " << GetNtracks() << " Nvertices : " << fNvtx << endl;
+ << " Ntracks : " << GetNtracks() << endl;
+ cout << " Nvertices : " << fNvtx << " Njets : " << fNjets
+ << " Energy scale : " << fEscale << " GeV" << endl;
cout << " ";
- Ali4Vector::Info(f);
+ Ali4Vector::Data(f,u);
cout << " Position";
- AliPosition::Info(f);
+ AliPosition::Data(f,u);
}
///////////////////////////////////////////////////////////////////////////
-void AliVertex::List(TString f)
+void AliVertex::List(TString f,TString u)
{
// Provide primary track and sec. vertex information within the coordinate frame f
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
- Info(f); // Information of the current vertex
+ Data(f,u); // Information of the current vertex
// The tracks of this vertex
AliTrack* t;
{
cout << " ---Track no. " << it << endl;
cout << " ";
- t->Info(f);
+ t->Data(f,u);
}
else
{
{
cout << " ---Level 1 sec. vertex no. " << iv << endl;
cout << " ";
- v->Info(f);
+ v->Data(f,u);
}
else
{
}
}
///////////////////////////////////////////////////////////////////////////
-void AliVertex::ListAll(TString f)
+void AliVertex::ListAll(TString f,TString u)
{
// Provide complete (sec) vertex and (decay) track info within the coordinate frame f
+//
+// The string argument "u" allows to choose between different angular units
+// in case e.g. a spherical frame is selected.
+// u = "rad" : angles provided in radians
+// "deg" : angles provided in degrees
+//
+// The defaults are f="car" and u="rad".
- Info(f); // Information of the current vertex
+ Data(f,u); // Information of the current vertex
// The tracks of this vertex
AliTrack* t;
{
cout << " ---Track no. " << it << endl;
cout << " ";
- t->ListAll(f);
+ t->ListAll(f,u);
}
else
{
}
AliVertex* v=this;
- Dump(v,1,f); // Information of all sec. vertices
+ Dumps(v,1,f,u); // Information of all sec. vertices
}
//////////////////////////////////////////////////////////////////////////
-void AliVertex::Dump(AliVertex* v,Int_t n,TString f)
+void AliVertex::Dumps(AliVertex* v,Int_t n,TString f,TString u)
{
// Recursively provide the info of all secondary vertices of this vertex
AliVertex* vs;
{
cout << " ---Level " << n << " sec. vertex no. " << iv << endl;
cout << " ";
- vs->Info(f);
+ vs->Data(f,u);
// The tracks of this vertex
AliTrack* t;
{
cout << " ---Track no. " << it << endl;
cout << " ";
- t->ListAll(f);
+ t->ListAll(f,u);
}
else
{
- cout << " *AliVertex::Dump* Error : No track present." << endl;
+ cout << " *AliVertex::Dumps* Error : No track present." << endl;
}
}
// Go for next sec. vertex level of this sec. vertex recursively
- Dump(vs,n+1,f);
+ Dumps(vs,n+1,f,u);
}
else
{
- cout << " *AliVertex::Dump* Error : No sec. vertex present." << endl;
+ cout << " *AliVertex::Dumps* Error : No sec. vertex present." << endl;
}
}
}
//////////////////////////////////////////////////////////////////////////
-Int_t AliVertex::GetNvertices()
+Int_t AliVertex::GetNvertices() const
{
// Return the current number of (secondary) vertices
return fNvtx;
}
///////////////////////////////////////////////////////////////////////////
-AliVertex* AliVertex::GetVertex(Int_t i)
+AliVertex* AliVertex::GetVertex(Int_t i) const
{
// Return the i-th (secondary) vertex of the current vertex
- return (AliVertex*)fVertices->At(i-1);
+ if (!fVertices)
+ {
+ cout << " *AliVertex*::GetVertex* No (secondary) vertices present." << endl;
+ return 0;
+ }
+ else
+ {
+ if (i<=0 || i>fNvtx)
+ {
+ cout << " *AliVertex*::GetVertex* Invalid argument i : " << i
+ << " Nvtx = " << fNvtx << endl;
+ return 0;
+ }
+ else
+ {
+ return (AliVertex*)fVertices->At(i-1);
+ }
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+AliVertex* AliVertex::GetIdVertex(Int_t id) const
+{
+// Return the (sec.) vertex with user identifier "id"
+ AliVertex* vx=0;
+ AliVertex* v=0;
+ if (!fVertices)
+ {
+ cout << " *AliVertex*::GetIdVertex* No (secondary) vertices present." << endl;
+ return 0;
+ }
+ else
+ {
+ for (Int_t i=0; i<fNvtx; i++)
+ {
+ vx=(AliVertex*)fVertices->At(i);
+ if (id == vx->GetId()) v=vx;
+ }
+ return v;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::SetVertexCopy(Int_t j)
+{
+// (De)activate the creation of private copies of the added vertices.
+// j=0 ==> No private copies are made; pointers of original vertices are stored.
+// j=1 ==> Private copies of the vertices are made and these pointers are stored.
+//
+// Note : Once the storage contains pointer(s) to AliVertex objects one cannot
+// change the VertexCopy mode anymore.
+// To change the VertexCopy mode for an existing AliVertex containing
+// vertices one first has to invoke Reset().
+ if (!fVertices)
+ {
+ if (j==0 || j==1)
+ {
+ fVertexCopy=j;
+ }
+ else
+ {
+ cout << "*AliVertex::SetVertexCopy* Invalid argument : " << j << endl;
+ }
+ }
+ else
+ {
+ cout << "*AliVertex::SetVertexCopy* Storage already contained vertices."
+ << " ==> VertexCopy mode not changed." << endl;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+Int_t AliVertex::GetVertexCopy() const
+{
+// Provide value of the VertexCopy mode.
+// 0 ==> No private copies are made; pointers of original vertices are stored.
+// 1 ==> Private copies of the vertices are made and these pointers are stored.
+ return fVertexCopy;
+}
+///////////////////////////////////////////////////////////////////////////
+Int_t AliVertex::GetNjets() const
+{
+// Return the current number of jets
+ return fNjets;
+}
+///////////////////////////////////////////////////////////////////////////
+AliJet* AliVertex::GetJet(Int_t i) const
+{
+// Return the i-th jet of the current vertex
+ if (!fJets)
+ {
+ cout << " *AliVertex*::GetJet* No jets present." << endl;
+ return 0;
+ }
+ else
+ {
+ if (i<=0 || i>fNjets)
+ {
+ cout << " *AliVertex*::GetJet* Invalid argument i : " << i
+ << " Njets = " << fNjets << endl;
+ return 0;
+ }
+ else
+ {
+ return (AliJet*)fJets->At(i-1);
+ }
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+AliJet* AliVertex::GetIdJet(Int_t id) const
+{
+// Return the jet with user identifier "id"
+ AliJet* jx=0;
+ AliJet* j=0;
+ if (!fJets)
+ {
+ cout << " *AliVertex*::GetIdJet* No jets present." << endl;
+ return 0;
+ }
+ else
+ {
+ for (Int_t i=0; i<fNjets; i++)
+ {
+ jx=(AliJet*)fJets->At(i);
+ if (id == jx->GetId()) j=jx;
+ }
+ return j;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::SetJetCopy(Int_t j)
+{
+// (De)activate the creation of private copies of the added jets.
+// j=0 ==> No private copies are made; pointers of original jets are stored.
+// j=1 ==> Private copies of the jets are made and these pointers are stored.
+//
+// Note : Once the storage contains pointer(s) to AliJet objects one cannot
+// change the JetCopy mode anymore.
+// To change the JetCopy mode for an existing AliVertex containing
+// jets one first has to invoke Reset().
+ if (!fJets)
+ {
+ if (j==0 || j==1)
+ {
+ fJetCopy=j;
+ }
+ else
+ {
+ cout << "*AliVertex::SetJetCopy* Invalid argument : " << j << endl;
+ }
+ }
+ else
+ {
+ cout << "*AliVertex::SetJetCopy* Storage already contained jets."
+ << " ==> JetCopy mode not changed." << endl;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+Int_t AliVertex::GetJetCopy() const
+{
+// Provide value of the JetCopy mode.
+// 0 ==> No private copies are made; pointers of original jets are stored.
+// 1 ==> Private copies of the jets are made and these pointers are stored.
+ return fJetCopy;
+}
+///////////////////////////////////////////////////////////////////////////
+Int_t AliVertex::IsConnectTrack(AliTrack* t) const
+{
+// Indicate whether a track from the tracklist was created via the
+// connection of a (secondary) vertex or not.
+// In case the track was the result of (secondary) vertex addition the
+// return value is 1, otherwise the value 0 will be returned.
+ Int_t connect=0;
+ if (fConnects)
+ {
+ if (fConnects->FindObject(t)) connect=1;
+ }
+ return connect;
+}
+///////////////////////////////////////////////////////////////////////////
+Int_t AliVertex::IsJetTrack(AliTrack* t) const
+{
+// Indicate whether a track from the tracklist was created via the
+// addition of a jet or not.
+// In case the track was the result of jet addition the return value is 1,
+// otherwise the value 0 will be returned.
+ Int_t jetflag=0;
+ if (fJetTracks)
+ {
+ if (fJetTracks->FindObject(t)) jetflag=1;
+ }
+ return jetflag;
+}
+///////////////////////////////////////////////////////////////////////////
+void AliVertex::Draw(Int_t secs,Int_t cons,Int_t jets)
+{
+// 3-Dimensional visualisation of an AliVertex with its attributes.
+// The displayed tracklength is proportional to the momentum of the track.
+//
+// Color conventions :
+// -------------------
+// positive track : red
+// neutral track : green
+// negative track : blue
+// jet-track : magenta (if explicit marking selected)
+//
+// secs = 1 --> Draw secondary vertices. (Default)
+// 0 --> Don't draw secondary vertices.
+//
+// cons = 1 --> Draw (auto generated) connecting tracks. (Default)
+// 0 --> Don't draw (auto generated) connecting tracks.
+//
+// jets = 1 --> Mark tracks belonging to jets.
+// 0 --> Don't mark jet-tracks. (Default)
+//
+// Notes :
+// -------
+// Auto generated connecting tracks will be drawn as thin lines.
+// Tracks belonging to jets will be marked as somewhat thinner magenta lines.
+// This memberfunction is used recursively.
+//
+ Double_t vec[3]={0,0,0};
+ AliTrack* tx=0;
+ AliVertex* vx=0;
+ AliPosition* r=0;
+ Ali3Vector p;
+ Float_t charge;
+
+ AliPosition dummy;
+
+ if (fLines) delete fLines;
+ fLines=new TObjArray();
+ fLines->SetOwner();
+
+ Int_t ntk=GetNtracks();
+ for (Int_t jtk=1; jtk<=ntk; jtk++)
+ {
+ tx=GetTrack(jtk);
+
+ if (!tx) continue;
+
+ charge=tx->GetCharge();
+
+ TPolyLine3D* line=new TPolyLine3D();
+ fLines->Add(line);
+
+ if (IsConnectTrack(tx))
+ {
+ if (cons==1)
+ {
+ r=tx->GetBeginPoint();
+ if (!r) r=&dummy;
+ r->GetPosition(vec,"car");
+ line->SetNextPoint(vec[0],vec[1],vec[2]);
+ r=tx->GetEndPoint();
+ if (!r) r=&dummy;
+ r->GetPosition(vec,"car");
+ line->SetNextPoint(vec[0],vec[1],vec[2]);
+ line->SetLineWidth(1);
+ }
+ }
+ else
+ {
+ r=tx->GetClosestPoint();
+ if (!r) r=&dummy;
+ r->GetPosition(vec,"car");
+ line->SetNextPoint(vec[0],vec[1],vec[2]);
+ p=tx->Get3Momentum();
+ p=p+(*r);
+ p.GetVector(vec,"car");
+ line->SetNextPoint(vec[0],vec[1],vec[2]);
+ line->SetLineWidth(3);
+ }
+
+ line->SetLineColor(kGreen); // Neutral track
+ if (charge>0) line->SetLineColor(kRed); // Positive track
+ if (charge<0) line->SetLineColor(kBlue); // Negative track
+
+ // Mark tracks belonging to jets
+ if (IsJetTrack(tx))
+ {
+ if (jets==1)
+ {
+ line->SetLineWidth(2);
+ line->SetLineColor(kMagenta);
+ }
+ }
+
+ line->Draw();
+ }
+
+ // Go for secondary vertices if selected
+ if (secs==1)
+ {
+ Int_t nvtx=GetNvertices();
+ for (Int_t jvtx=1; jvtx<=nvtx; jvtx++)
+ {
+ vx=GetVertex(jvtx);
+ if (vx) vx->Draw(secs,cons,jets);
+ }
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+TObjArray* AliVertex::SortJets(Int_t mode,TObjArray* jets)
+{
+// Order the references to an array of jets by looping over the input array "jets"
+// and checking the value of a certain observable.
+// The ordered array is returned as a TObjArray.
+// In case jets=0 (default), the registered jets of the current vertex are used.
+// Note that the original jet array is not modified.
+// Via the "mode" argument the user can specify the observable to be checked upon
+// and specify whether sorting should be performed in decreasing order (mode<0)
+// or in increasing order (mode>0).
+//
+// The convention for the observable selection is the following :
+// mode : 1 ==> Number of tracks in the jet
+// 2 ==> Jet energy
+// 3 ==> Jet momentum
+// 4 ==> Invariant mass of the jet
+// 5 ==> Transverse momentum of the jet
+// 6 ==> Longitudinal momentum of the jet
+// 7 ==> Transverse energy of the jet
+// 8 ==> Longitudinal energy of the jet
+// 9 ==> Transverse mass of the jet
+// 10 ==> Jet rapidity
+// 11 ==> Pseudo-rapidity of the jet
+// 12 ==> Number of associated signals
+// 13 ==> Total charge of the jet
+//
+// The default is mode=-1.
+//
+// Note : This sorting routine uses a common area in memory, which is used
+// by various other sorting facilities as well.
+// This means that the resulting sorted TObjArray may be overwritten
+// when another sorting is invoked.
+// To retain the sorted list of pointers, the user is advised to copy
+// the pointers contained in the returned TObjArray into a private
+// TObjArray instance.
+
+ if (fSelected)
+ {
+ delete fSelected;
+ fSelected=0;
+ }
+
+ if (!jets) jets=fJets;
+
+ if (!mode || abs(mode)>13 || !jets) return fSelected;
+
+ Int_t njets=jets->GetEntries();
+ if (!njets)
+ {
+ return fSelected;
+ }
+ else
+ {
+ fSelected=new TObjArray(njets);
+ }
+
+ Double_t val1,val2; // Values of the observable to be tested upon
+
+ Int_t nord=0;
+ for (Int_t i=0; i<njets; i++) // Loop over all jets of the array
+ {
+ AliJet* jx=(AliJet*)jets->At(i);
+
+ if (!jx) continue;
+
+ if (nord == 0) // store the first jet at the first ordered position
+ {
+ nord++;
+ fSelected->AddAt(jx,nord-1);
+ continue;
+ }
+
+ for (Int_t j=0; j<=nord; j++) // put jet in the right ordered position
+ {
+ if (j == nord) // jet has smallest (mode<0) or largest (mode>0) observable value seen so far
+ {
+ nord++;
+ fSelected->AddAt(jx,j); // add jet at the end
+ break; // go for next jet
+ }
+
+ val1=0;
+ val2=0;
+
+ switch (abs(mode))
+ {
+ case 1:
+ val1=jx->GetNtracks();
+ val2=((AliJet*)fSelected->At(j))->GetNtracks();
+ break;
+ case 2:
+ val1=jx->GetEnergy(1);
+ val2=((AliJet*)fSelected->At(j))->GetEnergy(1);
+ break;
+ case 3:
+ val1=jx->GetMomentum(1);
+ val2=((AliJet*)fSelected->At(j))->GetMomentum(1);
+ break;
+ case 4:
+ val1=jx->GetInvmass(1);
+ val2=((AliJet*)fSelected->At(j))->GetInvmass(1);
+ break;
+ case 5:
+ val1=jx->GetPt(1);
+ val2=((AliJet*)fSelected->At(j))->GetPt(1);
+ break;
+ case 6:
+ val1=jx->GetPl(1);
+ val2=((AliJet*)fSelected->At(j))->GetPl(1);
+ break;
+ case 7:
+ val1=jx->GetEt(1);
+ val2=((AliJet*)fSelected->At(j))->GetEt(1);
+ break;
+ case 8:
+ val1=jx->GetEl(1);
+ val2=((AliJet*)fSelected->At(j))->GetEl(1);
+ break;
+ case 9:
+ val1=jx->GetMt(1);
+ val2=((AliJet*)fSelected->At(j))->GetMt(1);
+ break;
+ case 10:
+ val1=jx->GetRapidity();
+ val2=((AliJet*)fSelected->At(j))->GetRapidity();
+ break;
+ case 11:
+ val1=jx->GetPseudoRapidity();
+ val2=((AliJet*)fSelected->At(j))->GetPseudoRapidity();
+ break;
+ case 12:
+ val1=jx->GetNsignals();
+ val2=((AliJet*)fSelected->At(j))->GetNsignals();
+ break;
+ case 13:
+ val1=jx->GetCharge();
+ val2=((AliJet*)fSelected->At(j))->GetCharge();
+ break;
+ }
+
+ if (mode<0 && val1 <= val2) continue;
+ if (mode>0 && val1 >= val2) continue;
+
+ nord++;
+ for (Int_t k=nord-1; k>j; k--) // create empty position
+ {
+ fSelected->AddAt(fSelected->At(k-1),k);
+ }
+ fSelected->AddAt(jx,j); // put jet at empty position
+ break; // go for next jet
+ }
+ }
+ return fSelected;
+}
+///////////////////////////////////////////////////////////////////////////
+TObject* AliVertex::Clone(const char* name) const
+{
+// Make a deep copy of the current object and provide the pointer to the copy.
+// This memberfunction enables automatic creation of new objects of the
+// correct type depending on the object type, a feature which may be very useful
+// for containers when adding objects in case the container owns the objects.
+// This feature allows e.g. AliEvent to store either AliVertex objects or
+// objects derived from AliVertex via the AddVertex memberfunction, provided
+// these derived classes also have a proper Clone memberfunction.
+
+ AliVertex* vtx=new AliVertex(*this);
+ if (name)
+ {
+ if (strlen(name)) vtx->SetName(name);
+ }
+ return vtx;
}
///////////////////////////////////////////////////////////////////////////
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff