Corrected initialization of pointers (Solaris x86)
[u/mrichter/AliRoot.git] / STEER / AliVertex.cxx
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8a553be2 1/**************************************************************************
2 * Copyright(c) 2006-2008, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16//-----------------------------------------------------------------
17// Implementation of the base Vertex class
18// This class contains the Secondary Vertex
19// of a set of tracks
20// And it is the base class for primary vertices
21// Origin: F.Prino, Torino, prino@to.infn.it
22//-----------------------------------------------------------------
23
24#include "AliVertex.h"
25
26
27ClassImp(AliVertex)
28
29//--------------------------------------------------------------------------
fe12e09c 30AliVertex::AliVertex() :
31 TNamed(),
32 fSigma(0),
c1b20d31 33 fNContributors(0),
34 fNIndices(0)
fe12e09c 35{
8a553be2 36//
37// Default Constructor, set everything to 0
38//
39 for(Int_t k=0;k<3;k++) fPosition[k] = 0;
c1b20d31 40 fIndices = 0;
8a553be2 41}
42
43//--------------------------------------------------------------------------
44AliVertex::AliVertex(Double_t position[3],Double_t dispersion,
fe12e09c 45 Int_t nContributors):
46 TNamed(),
47 fSigma(dispersion),
c1b20d31 48 fNContributors(nContributors),
49 fNIndices(0)
fe12e09c 50{
8a553be2 51 //
52 // Standard Constructor
53 //
54
55 for(Int_t k=0;k<3;k++) fPosition[k] = position[k];
c1b20d31 56 fIndices = 0;
8a553be2 57 SetName("BaseVertex");
58
59}
60
2d57349e 61//--------------------------------------------------------------------------
fe12e09c 62AliVertex::AliVertex(const AliVertex &source):
63 TNamed(source),
64 fSigma(source.GetDispersion()),
c1b20d31 65 fNContributors(source.GetNContributors()),
101dc7be 66 fNIndices(source.GetNIndices()),
67 fIndices(0x0)
fe12e09c 68{
2d57349e 69 //
70 // Copy constructor
71 //
72 for(Int_t i=0;i<3;i++)fPosition[i] = source.fPosition[i];
c1b20d31 73 if(source.fNIndices>0) {
74 fIndices = new UShort_t[fNIndices];
75 memcpy(fIndices,source.fIndices,fNIndices*sizeof(UShort_t));
76 }
2d57349e 77}
78
79//--------------------------------------------------------------------------
80AliVertex &AliVertex::operator=(const AliVertex &source){
81 //
82 // assignment operator
83 //
84 if(&source == this) return *this;
85 this->SetName(source.GetName());
86 this->SetTitle(source.GetTitle());
87 for(Int_t i=0;i<3;i++)fPosition[i] = source.fPosition[i];
88 fSigma = source.GetDispersion();
89 fNContributors = source.GetNContributors();
c1b20d31 90 fNIndices = source.GetNIndices();
101dc7be 91 fIndices = 0x0;
c1b20d31 92 if(source.fNIndices>0) {
93 fIndices = new UShort_t[fNIndices];
94 memcpy(fIndices,source.fIndices,fNIndices*sizeof(UShort_t));
95 }
2d57349e 96 return *this;
97}
98
8a553be2 99
100//--------------------------------------------------------------------------
101AliVertex::~AliVertex() {
102//
103// Default Destructor
104//
c1b20d31 105 delete [] fIndices;
8a553be2 106}
107//--------------------------------------------------------------------------
108void AliVertex::GetXYZ(Double_t position[3]) const {
109//
110// Return position of the vertex in global frame
111//
112 position[0] = fPosition[0];
113 position[1] = fPosition[1];
114 position[2] = fPosition[2];
115
116 return;
117}
118//--------------------------------------------------------------------------
c1b20d31 119void AliVertex::SetIndices(Int_t nindices,UShort_t *indices) {
120//
121// Set indices of tracks used for vertex determination
122//
123 if(fNContributors<1) { printf("fNContributors<1"); return; }
124 fNIndices = nindices;
101dc7be 125 delete [] fIndices;
c1b20d31 126 fIndices = new UShort_t[fNIndices];
127 for(Int_t i=0;i<fNIndices;i++) fIndices[i] = indices[i];
128 return;
129}
130//--------------------------------------------------------------------------
131Bool_t AliVertex::UsesTrack(Int_t index) const {
132//
133// checks if a track is used for the vertex
134//
135 if(fNIndices<1) { printf("fNIndices<1"); return kFALSE; }
136 for(Int_t i=0;i<fNIndices;i++) {
137 if((Int_t)fIndices[i]==index) return kTRUE;
138 }
139 return kFALSE;
140}
141//--------------------------------------------------------------------------
8a553be2 142void AliVertex::Print(Option_t* /*option*/) const {
143//
144// Print out information on all data members
145//
146 printf("Vertex position:\n");
147 printf(" x = %f\n",fPosition[0]);
148 printf(" y = %f\n",fPosition[1]);
149 printf(" z = %f\n",fPosition[2]);
150 printf(" Dispersion = %f\n",fSigma);
151 printf(" # tracks = %d\n",fNContributors);
152
153 return;
154}
155
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