Removing extra semicolons (FedoraCore3, gcc 3.4.2)
[u/mrichter/AliRoot.git] / EVGEN / AliGenReaderCwn.cxx
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f24650c5 1/**************************************************************************
2 * Copyright(c) 1998-1999, 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
88cb7938 17/* $Id$ */
f24650c5 18
19// Read the old ALICE event format based on CW-ntuples
20// http://consult.cern.ch/alice/Internal_Notes/1995/32/abstract
21// .cwn file have to be converted to .root using h2root
22// Use SetFileName(file) to read from "file"
23// Author: andreas.morsch@cern.ch
24
25#include <TFile.h>
f24650c5 26#include <TParticle.h>
88cb7938 27#include <TTree.h>
acc86a24 28#include <TVirtualMC.h>
f24650c5 29
30#include "AliGenReaderCwn.h"
88cb7938 31
925e6570 32ClassImp(AliGenReaderCwn)
f24650c5 33
34
35AliGenReaderCwn::AliGenReaderCwn()
36{
37// Default constructor
38 fNcurrent = 0;
39 fTreeNtuple = 0;
40}
41
ae872676 42AliGenReaderCwn::~AliGenReaderCwn()
43{
44 delete fTreeNtuple;
45}
46
f24650c5 47void AliGenReaderCwn::Init()
48{
49//
50// reset the existing file environment and open a new root file if
51// the pointer to the Fluka tree is null
52
53 TFile *pFile=0;
54 if (!pFile) {
55 pFile = new TFile(fFileName);
56 pFile->cd();
57 printf("\n I have opened %s file \n", fFileName);
58 }
59// get the tree address in the Fluka boundary source file
60 fTreeNtuple = (TTree*)gDirectory->Get("h888");
61
62 TTree *h2=fTreeNtuple;
63//Set branch addresses
64 h2->SetBranchAddress("Nihead",&fNihead);
65 h2->SetBranchAddress("Ihead",fIhead);
66 h2->SetBranchAddress("Nrhead",&fNrhead);
67 h2->SetBranchAddress("Rhead",fRhead);
68 h2->SetBranchAddress("Idpart",&fIdpart);
69 h2->SetBranchAddress("Theta",&fTheta);
70 h2->SetBranchAddress("Phi",&fPhi);
71 h2->SetBranchAddress("P",&fP);
72 h2->SetBranchAddress("E",&fE);
73}
74
75Int_t AliGenReaderCwn::NextEvent()
76{
77// Read the next event
78 Int_t nTracks;
79 fNparticle = 0;
80 TFile* pFile = fTreeNtuple->GetCurrentFile();
81 pFile->cd();
82
83 Int_t nentries = (Int_t) fTreeNtuple->GetEntries();
84 if (fNcurrent < nentries) {
f24650c5 85 fNcurrent++;
86
87 Int_t i5=fIhead[4];
88 Int_t i6=fIhead[5];
89 if (i5==0) {
90 printf("\n This should never happen !\n");
91 nTracks = 0;
92 } else {
93 printf("\n Next event contains %d tracks! \n", i6);
94 nTracks = i6;
95 }
96 fNparticleMax = nTracks;
97 return nTracks;
f24650c5 98 }
4facea7f 99
f24650c5 100 return 0;
101}
102
103TParticle* AliGenReaderCwn::NextParticle()
104{
105//
106//
107 Float_t prwn;
108 Float_t p[4];
109// Read the next particle
110 if (fCode == kGEANT3) fIdpart=gMC->PDGFromId(fIdpart);
111 Double_t amass = TDatabasePDG::Instance()->GetParticle(fIdpart)->Mass();
112 if(fE<=amass) {
113 Warning("Generate","Particle %d E = %f mass = %f %f %f \n",
114 fIdpart,fE,amass, fPhi, fTheta);
115 prwn=0;
116 } else {
117 prwn=sqrt((fE+amass)*(fE-amass));
118 }
119
120 fTheta *= TMath::Pi()/180.;
121 fPhi = (fPhi-180)*TMath::Pi()/180.;
122 p[0] = prwn*TMath::Sin(fTheta)*TMath::Cos(fPhi);
123 p[1] = prwn*TMath::Sin(fTheta)*TMath::Sin(fPhi);
124 p[2] = prwn*TMath::Cos(fTheta);
125 p[3] = fE;
159ec319 126 TParticle* particle = new TParticle(fIdpart, 0, -1, -1, -1, -1, p[0], p[1], p[2], p[3], 0., 0., 0., 0.);
f24650c5 127 fNcurrent++;
128 fNparticle++;
129 return particle;
130}
131
132
133
ae872676 134AliGenReaderCwn& AliGenReaderCwn::operator=(const AliGenReaderCwn& rhs)
135{
136// Assignment operator
198bb1c7 137 rhs.Copy(*this);
ae872676 138 return *this;
139}
f24650c5 140
dc1d768c 141void AliGenReaderCwn::Copy(TObject&) const
198bb1c7 142{
143 //
144 // Copy
145 //
146 Fatal("Copy","Not implemented!\n");
147}
148
149
f24650c5 150
151