/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-/* $Id$ */
+// $Id$
-///////////////////////////////////////////////////////////////////////////
-// Class AliVertex
-// Creation and investigation of an AliVertex.
-// An AliVertex can be constructed by adding AliTracks and/or AliJets.
-//
-// Note : Also (secondary) vertices can be added to a vertex.
-//
-// 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
-// v3 contains the jets 1 and 2
-//
-// AliTrack t1,t2,t3,t4,t5,t6,t7;
-// ...
-// ... // code to fill the track data
-// ...
-//
-// AliJet j1,j2;
-// ...
-// ... // code to fill the jet data
-// ...
-//
-// AliVertex v1(5);
-//
-// v1.Add(t1);
-// v1.Add(t2);
-// v1.Add(t3);
-// v1.Add(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);
-//
-// Float_t r2[3]={1.6,-3.2,5.7};
-// v2.SetPosition(r2,"car");
-//
-// AliVertex v3;
-//
-// v3.Add(j1);
-// v3.Add(j2);
-//
-// Float_t r3[3]={6.2,4.8,1.3};
-// v3.SetPosition(r3,"car");
-//
-// v1.Info("sph");
-// v2.ListAll();
-// v3.List("cyl");
-//
-// Float_t e1=v1.GetEnergy();
-// Ali3Vector p1=v1.Get3Momentum();
-// Float_t loc[3];
-// v1.GetPosition(loc,"sph");
-// AliPosition r=v2.GetPosition();
-// r.Info();
-// 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.List();
-//
-// Int_t nv=v1.GetNvtx();
-// AliVertex* vx=v1.GetVertex(1); // Access 1st secondary vertex of v1
-// Float_t e=vx->GetEnergy();
-//
-// Float_t M=v1.GetInvmass();
-//
-// Reconstruct Vertex v1 from scratch
-//
-// v1.Reset();
-// v1.SetNvmax(25); // Increase initial no. of sec. vertices
-// v1.Add(t3);
-// v1.Add(t7);
-// v1.Add(j2);
-// Float_t pos[3]={7,9,4};
-// v1.SetPosition(pos,"car");
-//
-// Note : All quantities are in GeV, GeV/c or GeV/c**2
-//
-//--- NvE 04-apr-1998 UU-SAP Utrecht
-//--- Modified : NvE 08-apr-1999 UU-SAP Utrecht to inherit from AliJet
-///////////////////////////////////////////////////////////////////////////
-
#include <iostream.h>
#include <math.h>
class AliVertex : public AliJet,public AliPosition
{
public:
- AliVertex(); // Default constructor
- AliVertex(Int_t n); // Create a vertex to hold initially n tracks
- ~AliVertex(); // Default destructor
- void Reset(); // Reset all values
- void Add(AliJet& j); // Add a jet of tracks to the vertex
- void Add(AliVertex& v); // Add a (secondary) vertex to the current vertex
- void Add(AliJet* j) { Add(*j); }
- void Add(AliVertex* v) { Add(*v); }
- void Info(TString f="car"); // Print the vertex info within coordinate frame f
- void List(TString f="car"); // Print vertex prim. track information for coord. frame f
- void ListAll(TString f="car"); // Print prim. + sec. vertex full track info for coord. frame f
- Int_t GetNvertices(); // Return the number of (secondary) vertices
- AliVertex* GetVertex(Int_t i); // Provide i-th (secondary) vertex
- void SetNvmax(Int_t n=2); // Set the initial max. number of (secondary) vertices
+ AliVertex(); // Default constructor
+ AliVertex(Int_t n); // Create a vertex to hold initially n tracks
+ ~AliVertex(); // Default destructor
+ void Reset(); // Reset all values
+ void AddJet(AliJet& j); // Add a jet of tracks to the vertex
+ void AddVertex(AliVertex& v,Int_t connect=1);// Add (and connect) a (sec.) vertex to the current vertex
+ void Add(AliJet* j) { AddJet(*j); }
+ void Add(AliVertex* v,Int_t connect=1) { AddVertex(*v,connect); }
+ void Info(TString f="car"); // Print the vertex info within coordinate frame f
+ void List(TString f="car"); // Print vertex prim. track information for coord. frame f
+ void ListAll(TString f="car"); // Print prim. + sec. vertex full track info for coord. frame f
+ Int_t GetNvertices(); // Return the number of (secondary) vertices
+ AliVertex* GetVertex(Int_t i); // Provide i-th (secondary) vertex
+ void SetNvmax(Int_t n=2); // Set the initial max. number of (secondary) vertices
protected:
Int_t fNvmax; // The maximum number of (secondary) vertices
Int_t fNvtx; // The number of (secondary) vertices
TObjArray* fVertices; // Array to hold the pointers to the (secondary) vertices
+ TObjArray* fConnects; // Array to hold the pointers to the auto-generated connecting tracks
private:
void Dump(AliVertex* v,Int_t n,TString f); // Recursively print all sec. vertices
- ClassDef(AliVertex,1) // Class definition to enable ROOT I/O
+ ClassDef(AliVertex,1) // Creation and investigation of an AliVertex.
};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff