1 /**************************************************************************
2 * Copyright(c) 2006-2008, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 //-----------------------------------------------------------------
17 // Implementation of the base Vertex class
18 // This class contains the Secondary Vertex
20 // And it is the base class for primary vertices
21 // Origin: F.Prino, Torino, prino@to.infn.it
22 //-----------------------------------------------------------------
24 #include "AliVertex.h"
29 //--------------------------------------------------------------------------
30 AliVertex::AliVertex() : TNamed() {
32 // Default Constructor, set everything to 0
34 for(Int_t k=0;k<3;k++) fPosition[k] = 0;
39 //--------------------------------------------------------------------------
40 AliVertex::AliVertex(Double_t position[3],Double_t dispersion,
41 Int_t nContributors): TNamed() {
43 // Standard Constructor
46 for(Int_t k=0;k<3;k++) fPosition[k] = position[k];
48 fNContributors = nContributors;
49 SetName("BaseVertex");
54 //--------------------------------------------------------------------------
55 AliVertex::~AliVertex() {
61 //--------------------------------------------------------------------------
62 void AliVertex::GetXYZ(Double_t position[3]) const {
64 // Return position of the vertex in global frame
66 position[0] = fPosition[0];
67 position[1] = fPosition[1];
68 position[2] = fPosition[2];
72 //--------------------------------------------------------------------------
73 void AliVertex::Print(Option_t* /*option*/) const {
75 // Print out information on all data members
77 printf("Vertex position:\n");
78 printf(" x = %f\n",fPosition[0]);
79 printf(" y = %f\n",fPosition[1]);
80 printf(" z = %f\n",fPosition[2]);
81 printf(" Dispersion = %f\n",fSigma);
82 printf(" # tracks = %d\n",fNContributors);