Derive from TNamed.
[u/mrichter/AliRoot.git] / EVGEN / AliGenFixed.cxx
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790bbabf 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/*
17$Log$
18*/
19
20///////////////////////////////////////////////////////////////////
21// //
22// Generate the final state of the interaction as the input //
23// to the MonteCarlo //
24//
25//Begin_Html
26/*
27<img src="picts/AliGeneratorClass.gif">
28</pre>
29<br clear=left>
30<font size=+2 color=red>
31<p>The responsible person for this module is
32<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
33</font>
34<pre>
35*/
36//End_Html
37// //
38///////////////////////////////////////////////////////////////////
39
40#include "AliGenFixed.h"
41#include "AliRun.h"
42#include "AliConst.h"
43#include "AliPDG.h"
44#include "TF1.h"
45
46ClassImp(AliGenFixed)
47
48//_____________________________________________________________________________
49AliGenFixed::AliGenFixed()
50 :AliGenerator()
51{
52 //
53 // Default constructor
54 //
55 fIpart = 0;
56}
57
58//_____________________________________________________________________________
59AliGenFixed::AliGenFixed(Int_t npart)
60 :AliGenerator(npart)
61{
62 //
63 // Standard constructor
64 //
65 fName="Fixed";
66 fTitle="Fixed Particle Generator";
67 // Generate Proton by default
68 fIpart=kProton;
69}
70
71//_____________________________________________________________________________
72void AliGenFixed::Generate()
73{
74 //
75 // Generate one trigger
76 //
77 Float_t polar[3]= {0,0,0};
78 Float_t p[3] = {fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin),
79 fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin),
80 fPMin*TMath::Cos(fThetaMin)};
81 Int_t i, nt;
82 //
83 for(i=0;i<fNpart;i++) {
84 gAlice->SetTrack(fTrackIt,-1,fIpart,p,fOrigin.GetArray(),polar,0,"Primary",nt);
85 }
86}
87
88//_____________________________________________________________________________
89void AliGenFixed::SetSigma(Float_t sx, Float_t sy, Float_t sz)
90{
91 //
92 // Set the interaction point sigma
93 //
94 printf("Vertex smearing not implemented for fixed generator\n");
95}