Add the number of local boards
[u/mrichter/AliRoot.git] / EVGEN / AliGenFixed.cxx
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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/* $Id$ */
17
18// Simple particle gun.
19// Momentum, phi and theta of the partice as well as the particle type can be set.
20// If fExplicit is true the user set momentum vector is used,
21// otherwise it is calculated.
22// andreas.morsch@cern.ch
23
24#include "TPDGCode.h"
25
26#include "AliGenFixed.h"
27#include "AliRun.h"
28
29ClassImp(AliGenFixed)
30
31//_____________________________________________________________________________
32AliGenFixed::AliGenFixed()
33 :AliGenerator(),
34 fIpart(0),
35 fExplicit(kFALSE)
36{
37 //
38 // Default constructor
39 //
40}
41
42//_____________________________________________________________________________
43AliGenFixed::AliGenFixed(Int_t npart)
44 :AliGenerator(npart),
45 fIpart(kProton),
46 fExplicit(kFALSE)
47{
48 //
49 // Standard constructor
50 //
51 fName="Fixed";
52 fTitle="Fixed Particle Generator";
53}
54
55//_____________________________________________________________________________
56void AliGenFixed::Generate()
57{
58 //
59 // Generate one trigger
60 //
61 Float_t polar[3]= {0,0,0};
62 if(!fExplicit) {
63 fP[0] = fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin);
64 fP[1] = fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin);
65 fP[2] = fPMin*TMath::Cos(fThetaMin);
66 }
67 Int_t i, nt;
68 //
69 Float_t o[3];
70 o[0] = fOrigin[0];
71 o[1] = fOrigin[1];
72 o[2] = fOrigin[2];
73
74 printf("Origin %f %f %f \n", o[0], o[1], o[2]);
75
76
77 for(i=0;i<fNpart;i++)
78 PushTrack(fTrackIt,-1,fIpart,fP,o ,polar,0,kPPrimary,nt);
79}
80
81//_____________________________________________________________________________
82void AliGenFixed::SetSigma(Float_t /*sx*/, Float_t /*sy*/, Float_t /*sz*/)
83{
84 //
85 // Set the interaction point sigma
86 //
87 printf("Vertex smearing not implemented for fixed generator\n");
88}