Introducing Header instead of Log
[u/mrichter/AliRoot.git] / EVGEN / AliGenFixed.cxx
CommitLineData
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$Log$
49c4fdc3 18Revision 1.6 2001/07/27 17:09:36 morsch
19Use local SetTrack, KeepTrack and SetHighWaterMark methods
20to delegate either to local stack or to stack owned by AliRun.
21(Piotr Skowronski, A.M.)
22
a99cf51f 23Revision 1.5 2001/02/24 11:41:59 morsch
24SetGun allows specify completely the particle kinematics and position in one go. (FCA)
25
f1f30542 26Revision 1.4 2000/12/21 16:24:06 morsch
27Coding convention clean-up
28
675e9664 29Revision 1.3 2000/11/30 07:12:50 alibrary
30Introducing new Rndm and QA classes
31
65fb704d 32Revision 1.2 2000/10/02 15:17:54 morsch
33Unused includes removed.
34
6c2f0383 35Revision 1.1 2000/06/09 20:24:00 morsch
36Same class as previously in AliSimpleGen.cxx
37All coding rule violations except RS3 corrected (AM)
38
790bbabf 39*/
40
675e9664 41
42
43// Simple particle gun.
44// Momentum, phi and theta of the partice as well as the particle type can be set.
45// andreas.morsch@cern.ch
790bbabf 46//Begin_Html
47/*
48<img src="picts/AliGeneratorClass.gif">
49</pre>
50<br clear=left>
51<font size=+2 color=red>
52<p>The responsible person for this module is
53<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
54</font>
55<pre>
56*/
57//End_Html
58// //
59///////////////////////////////////////////////////////////////////
60
61#include "AliGenFixed.h"
62#include "AliRun.h"
790bbabf 63#include "AliPDG.h"
790bbabf 64
65ClassImp(AliGenFixed)
66
67//_____________________________________________________________________________
68AliGenFixed::AliGenFixed()
69 :AliGenerator()
70{
71 //
72 // Default constructor
73 //
74 fIpart = 0;
f1f30542 75 fExplicit = kFALSE;
790bbabf 76}
77
78//_____________________________________________________________________________
79AliGenFixed::AliGenFixed(Int_t npart)
80 :AliGenerator(npart)
81{
82 //
83 // Standard constructor
84 //
85 fName="Fixed";
86 fTitle="Fixed Particle Generator";
87 // Generate Proton by default
88 fIpart=kProton;
49c4fdc3 89 fExplicit = kFALSE;
790bbabf 90}
91
92//_____________________________________________________________________________
93void AliGenFixed::Generate()
94{
95 //
96 // Generate one trigger
97 //
98 Float_t polar[3]= {0,0,0};
f1f30542 99 if(!fExplicit) {
100 fP[0] = fPMin*TMath::Cos(fPhiMin)*TMath::Sin(fThetaMin);
101 fP[1] = fPMin*TMath::Sin(fPhiMin)*TMath::Sin(fThetaMin);
102 fP[2] = fPMin*TMath::Cos(fThetaMin);
103 }
790bbabf 104 Int_t i, nt;
105 //
f1f30542 106 for(i=0;i<fNpart;i++)
a99cf51f 107 SetTrack(fTrackIt,-1,fIpart,fP,fOrigin.GetArray(),polar,0,kPPrimary,nt);
790bbabf 108}
109
110//_____________________________________________________________________________
111void AliGenFixed::SetSigma(Float_t sx, Float_t sy, Float_t sz)
112{
113 //
114 // Set the interaction point sigma
115 //
116 printf("Vertex smearing not implemented for fixed generator\n");
117}