+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/*
+$Log$
+Revision 1.12 2001/02/02 11:12:50 morsch
+Add Vertex() method that allows to get vertex from merging manager, if needed.
+
+Revision 1.11 2001/01/26 19:58:48 hristov
+Major upgrade of AliRoot code
+
+Revision 1.10 2000/12/21 15:30:18 fca
+Correcting coding convention violations
+
+Revision 1.9 2000/10/04 10:08:01 fca
+Correction of minor typing mistakes
+
+Revision 1.8 2000/10/02 21:28:14 fca
+Removal of useless dependecies via forward declarations
+
+Revision 1.7 2000/07/12 08:56:25 fca
+Coding convention correction and warning removal
+
+Revision 1.6 2000/07/11 18:24:59 fca
+Coding convention corrections + few minor bug fixes
+
+Revision 1.5 2000/06/08 13:34:50 fca
+Better control of momentum range in GenBox
+
+Revision 1.4 1999/09/29 09:24:29 fca
+Introduction of the Copyright and cvs Log
+
+*/
+
///////////////////////////////////////////////////////////////////
// //
// Generate the final state of the interaction as the input //
//
//Begin_Html
/*
-<img src="gif/AliGeneratorClass.gif">
+<img src="picts/AliGeneratorClass.gif">
</pre>
<br clear=left>
<font size=+2 color=red>
///////////////////////////////////////////////////////////////////
#include "AliGenerator.h"
+#include "TGenerator.h"
#include "AliRun.h"
+#include "AliConfig.h"
ClassImp(AliGenerator)
//____________________________________________________________
AliGenerator::AliGenerator()
{
- gAlice->SetGenerator(this);
- SetThetaRange();
- SetPhiRange();
- SetMomentumRange();
- SetPtRange();
- SetYRange();
- SetNumberParticles();
//
- // fName="Default";
- // fTitle="Base Generator Class";
+ // Default constructor
//
+ if (gAlice->GetDebug()>0)
+ printf("\n AliGenerator Default Constructor\n\n");
+
+ gAlice->SetGenerator(this);
+ SetThetaRange(); ResetBit(kThetaRange);
+ SetPhiRange(); ResetBit(kPhiRange);
+ SetMomentumRange(); ResetBit(kMomentumRange);
+ SetPtRange(); ResetBit(kPtRange);
+ SetYRange(); ResetBit(kYRange);
+ SetNumberParticles();
+ SetTrackingFlag();
+
fOrigin.Set(3);
fOsigma.Set(3);
+ fVertex.Set(3);
+
fOrigin[0]=fOrigin[1]=fOrigin[2]=0;
fOsigma[0]=fOsigma[1]=fOsigma[2]=0;
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+
+ fVMin.Set(3);
+ fVMin[0]=fVMin[1]=fVMin[2]=0;
+ fVMax.Set(3);
+ fVMax[0]=fVMax[1]=fVMax[2]=10000;
}
//____________________________________________________________
AliGenerator::AliGenerator(Int_t npart)
: TNamed(" "," ")
{
- gAlice->SetGenerator(this);
- SetThetaRange();
- SetPhiRange();
- SetMomentumRange();
- SetPtRange();
- SetYRange();
- SetNumberParticles(npart);
//
- // fName="Default";
- // fTitle="Base Generator Class";
+ // Standard constructor
//
- fVertexSmear=none;
+ if (gAlice->GetDebug()>0)
+ printf("\n AliGenerator Constructor initializing number of particles \n\n");
+ gAlice->SetGenerator(this);
+ SetThetaRange(); ResetBit(kThetaRange);
+ SetPhiRange(); ResetBit(kPhiRange);
+ SetMomentumRange(); ResetBit(kMomentumRange);
+ SetPtRange(); ResetBit(kPtRange);
+ SetYRange(); ResetBit(kYRange);
+ SetTrackingFlag();
+
fOrigin.Set(3);
fOsigma.Set(3);
+ fVertex.Set(3);
+
fOrigin[0]=fOrigin[1]=fOrigin[2]=0;
fOsigma[0]=fOsigma[1]=fOsigma[2]=0;
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+
fVMin.Set(3);
fVMin[0]=fVMin[1]=fVMin[2]=0;
fVMax.Set(3);
fVMax[0]=fVMax[1]=fVMax[2]=10000;
+
+ SetNumberParticles(npart);
+
+ AliConfig::Instance()->Add(this);
+}
+
+//____________________________________________________________
+AliGenerator::AliGenerator(const AliGenerator &gen) : TNamed(" "," ")
+{
+ //
+ // Copy constructor
+ //
+ gen.Copy(*this);
+}
+
+//____________________________________________________________
+AliGenerator & AliGenerator::operator=(const AliGenerator &gen)
+{
+ //
+ // Assignment operator
+ //
+ gen.Copy(*this);
+ return (*this);
+}
+
+//____________________________________________________________
+void AliGenerator::Copy(AliGenerator &/* gen */) const
+{
+ //
+ // Copy *this onto gen
+ //
+ Fatal("Copy","Not implemented!\n");
}
//____________________________________________________________
AliGenerator::~AliGenerator()
{
+ //
+ // Destructor
+ //
fOrigin.Set(0);
fOsigma.Set(0);
delete fgMCEvGen;
void AliGenerator::Init()
{
+ //
+ // Dummy initialisation
+ //
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetOrigin(Float_t ox, Float_t oy, Float_t oz)
+{
+ //
+ // Set the vertex for the generated tracks
+ //
+ fOrigin[0]=ox;
+ fOrigin[1]=oy;
+ fOrigin[2]=oz;
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetOrigin(const TLorentzVector &o)
+{
+ //
+ // Set the vertex for the generated tracks
+ //
+ fOrigin[0]=o[0];
+ fOrigin[1]=o[1];
+ fOrigin[2]=o[2];
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetSigma(Float_t sx, Float_t sy, Float_t sz)
+{
+ //
+ // Set the spread of the vertex
+ //
+ fOsigma[0]=sx;
+ fOsigma[1]=sy;
+ fOsigma[2]=sz;
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetMomentumRange(Float_t pmin, Float_t pmax)
+{
+ //
+ // Set the momentum range for the generated particles
+ //
+ fPMin = pmin;
+ fPMax = pmax;
+ SetBit(kMomentumRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetPtRange(Float_t ptmin, Float_t ptmax)
+{
+ //
+ // Set the Pt range for the generated particles
+ //
+ fPtMin = ptmin;
+ fPtMax = ptmax;
+ SetBit(kPtRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetPhiRange(Float_t phimin, Float_t phimax)
+{
+ //
+ // Set the Phi range for the generated particles
+ //
+ fPhiMin = TMath::Pi()*phimin/180;
+ fPhiMax = TMath::Pi()*phimax/180; SetBit(kPhiRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetYRange(Float_t ymin, Float_t ymax)
+{
+ //
+ // Set the Rapidity range for the generated particles
+ //
+ fYMin=ymin;
+ fYMax=ymax;
+ SetBit(kYRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetVRange(Float_t vxmin, Float_t vxmax,
+ Float_t vymin, Float_t vymax,
+ Float_t vzmin, Float_t vzmax)
+{
+ //
+ // Set the vertex range for the generated particles
+ //
+ fVMin[0]=vxmin; fVMin[1]=vymin; fVMin[2]=vzmin;
+ fVMax[0]=vxmax; fVMax[1]=vymax; fVMax[2]=vzmax;
+ SetBit(kVertexRange);
+}
+
+//_______________________________________________________________________
+void AliGenerator::SetThetaRange(Float_t thetamin, Float_t thetamax)
+{
+ //
+ // Set the theta range for the generated particles
+ //
+ fThetaMin = TMath::Pi()*thetamin/180;
+ fThetaMax = TMath::Pi()*thetamax/180; SetBit(kThetaRange);
+}
+
+void AliGenerator::Vertex()
+{
+ //
+ // Obtain vertex for current event from external source or calculated (internal)
+ //
+ if (fVertexSource == kInternal) {
+ VertexInternal();
+ } else {
+ VertexExternal();
+ }
+}
+
+
+void AliGenerator::VertexExternal()
+{
+ // Dummy !!!!!!
+ // Obtain vertex from external source
+ //
+ // Should be something like fVertex = gAlice->GetVertex()
+
+ fVertex[0]=fVertex[1]=fVertex[2]=0;
+}
+
+void AliGenerator::VertexInternal()
+{
+ //
+ // Obtain calculated vertex
+ // Default is gaussian smearing
+ Float_t random[6];
+ Rndm(random,6);
+ for (Int_t j = 0; j<3 ; j++) {
+ fVertex[j]=
+ fOrigin[j]+fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
+ }
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff