#ifndef ALIGENERATOR_H
#define ALIGENERATOR_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+/* $Id$ */
+
///////////////////////////////////////////////////////////
// //
// Class to generate the particles for the MC //
// //
///////////////////////////////////////////////////////////
-#include "TLorentzVector.h"
-#include "TArrayF.h"
-#include "TGenerator.h"
+#include <TArrayF.h>
+#include <TLorentzVector.h>
+#include <TMCProcess.h>
-typedef enum { none, perEvent, perTrack } VertexSmear_t;
+#include "AliRndm.h"
+
+class AliVertexGenerator;
+class AliCollisionGeometry;
+class AliStack;
+
+class TGenerator;
-class AliGenerator : public TNamed
-{
-protected:
- static TGenerator* fgMCEvGen;
- Float_t fThetaMin; //Minimum theta of generation in radians
- Float_t fThetaMax; //Maximum theta of generation in radians
- Float_t fPhiMin; //Minimum phi of generation in radians
- Float_t fPhiMax; //Maximum phi of generation in radians
- Float_t fPMin; //Minimum momentum of generation in GeV/c
- Float_t fPMax; //Minimum momentum of generation in GeV/c
- Float_t fPtMin; //Minimum transverse momentum
- Float_t fPtMax; //Maximum transverse momentum
- Float_t fYMin; //Minimum rapidity
- Float_t fYMax; //Maximum rapidity
- TArrayF fVMin; //Minimum Decaylength
- TArrayF fVMax; //Minimum Decaylength
- Int_t fNpart; //Maximum number of particles per event
- Float_t fParentWeight; //Parent Weight
- Float_t fChildWeight; //ChildWeight
- Int_t fTrackit; // Track the generated final state particle if 1
- Int_t fAnalog; //Flaf for anolog or pt-weighted generation
- //
- VertexSmear_t fVertexSmear; //Vertex Smearing mode
- Int_t fTrackIt; // if 1 Track final state particles
- TArrayF fOrigin; //Origin of event
- TArrayF fOsigma; //Sigma of the Origin of event
+
+typedef enum { kNoSmear, kPerEvent, kPerTrack } VertexSmear_t;
+typedef enum { kExternal, kInternal, kContainer} VertexSource_t;
+
+
+class AliGenerator : public TNamed, public AliRndm
+{
public:
AliGenerator();
AliGenerator(Int_t npart);
+ AliGenerator(const AliGenerator &gen);
virtual ~AliGenerator();
virtual void Init();
- virtual void SetOrigin(Float_t ox, Float_t oy, Float_t oz)
- {fOrigin[0]=ox;fOrigin[1]=oy;fOrigin[2]=oz;}
- virtual void SetOrigin(const TLorentzVector &o)
- {fOrigin[0]=o[0];fOrigin[1]=o[1];fOrigin[2]=o[2];}
- virtual void SetSigma(Float_t sx, Float_t sy, Float_t sz)
- {fOsigma[0]=sx;fOsigma[1]=sy;fOsigma[2]=sz;}
- virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10)
- {fPMin = pmin; fPMax = pmax;}
- virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=20.)
- {fPtMin = ptmin; fPtMax = ptmax;}
- virtual void SetPhiRange(Float_t phimin=-180., Float_t phimax=180)
- {fPhiMin = TMath::Pi()*phimin/180;
- fPhiMax = TMath::Pi()*phimax/180;}
- virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100)
- {fYMin=ymin; fYMax=ymax;}
+ void Copy(TObject &gen) const;
+ virtual void SetOrigin(Float_t ox, Float_t oy, Float_t oz);
+ virtual void SetOrigin(const TLorentzVector &o);
+ virtual void SetSigma(Float_t sx, Float_t sy, Float_t sz);
+ virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10);
+ virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=1.e10);
+ virtual void SetPhiRange(Float_t phimin = 0., Float_t phimax = 360.);
+ virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100);
virtual void SetVRange(Float_t vxmin, Float_t vxmax,
Float_t vymin, Float_t vymax,
- Float_t vzmin, Float_t vzmax)
- {
- fVMin[0]=vxmin; fVMin[1]=vymin; fVMin[2]=vzmin;
- fVMax[0]=vxmax; fVMax[1]=vymax; fVMax[2]=vzmax;
- }
+ Float_t vzmin, Float_t vzmax);
virtual void SetNumberParticles(Int_t npart=100) {fNpart=npart;}
- virtual Int_t NumberParticles() {return fNpart;}
- virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180)
- {fThetaMin = TMath::Pi()*thetamin/180;
- fThetaMax = TMath::Pi()*thetamax/180;}
+ virtual Int_t NumberParticles() const {return fNpart;}
+ virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180);
virtual void Generate()=0;
virtual void SetParentWeight(Float_t wgt) {fParentWeight=wgt;}
virtual void SetChildWeight(Float_t wgt) {fChildWeight=wgt;}
virtual void SetAnalog(Int_t flag=1) {fAnalog=flag;}
virtual void SetVertexSmear(VertexSmear_t smear) {fVertexSmear = smear;}
+ virtual void SetCutVertexZ(Float_t cut=999999.) {fCutVertexZ = cut;}
+ virtual void SetVertexSource(VertexSource_t source = kInternal) {fVertexSource = source;}
+ virtual void SetVertex(Float_t vx, Float_t vy, Float_t vz)
+ {fVertex[0] = vx; fVertex[1] = vy; fVertex[2] = vz;}
+ void SetVertexGenerator(AliVertexGenerator* vertexGenerator)
+ {fVertexGenerator = vertexGenerator; fVertexSource = kExternal; fVertexSmear = kPerEvent;}
virtual void SetTrackingFlag(Int_t flag=1) {fTrackIt=flag;}
-
- virtual void SetMC(TGenerator *theMC)
- {if (!fgMCEvGen) fgMCEvGen =theMC;}
+ void Vertex();
+ void VertexExternal();
+ virtual void VertexInternal();
+ virtual void FinishRun();
+ virtual void SetMC(TGenerator *theMC) {fMCEvGen =theMC;}
+ AliGenerator & operator=(const AliGenerator &gen);
// Getters
- virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz)
- {ox=fOrigin[0];oy=fOrigin[1];oz=fOrigin[2];}
- virtual void GetOrigin(TLorentzVector &o)
- {o[0]=fOrigin[0];o[1]=fOrigin[1];o[2]=fOrigin[2];o[3]=0;}
+ virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz) const
+ {ox=fOrigin.At(0);oy=fOrigin.At(1);oz=fOrigin.At(2);}
+ virtual void GetOrigin(TLorentzVector &o) const
+ {o[0]=fOrigin.At(0);o[1]=fOrigin.At(1);o[2]=fOrigin.At(2);o[3]=0;}
+ // Stack
+ void SetStack (AliStack *stack) {fStack = stack;}
+ AliStack* GetStack(){return fStack;}
+ // Collision Geometry
+ virtual Bool_t ProvidesCollisionGeometry() const {return kFALSE;}
+ virtual Bool_t NeedsCollisionGeometry() const {return kFALSE;}
+ virtual AliCollisionGeometry* CollisionGeometry() const {return fCollisionGeometry;}
+ virtual void SetCollisionGeometry(AliCollisionGeometry* geom) {fCollisionGeometry = geom;}
+ protected:
+ virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg,
+ Float_t *pmom, Float_t *vpos, Float_t *polar,
+ Float_t tof, TMCProcess mech, Int_t &ntr,
+ Float_t weight = 1, Int_t is = 0);
+ virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg,
+ Double_t px, Double_t py, Double_t pz, Double_t e,
+ Double_t vx, Double_t vy, Double_t vz, Double_t tof,
+ Double_t polx, Double_t poly, Double_t polz,
+ TMCProcess mech, Int_t &ntr, Float_t weight = 1, Int_t is = 0);
+ virtual void KeepTrack(Int_t itrack);
+ virtual void SetHighWaterMark(Int_t nt);
+
+ protected:
+ TGenerator* fMCEvGen; //!Pointer to the generator
+ Float_t fThetaMin; //Minimum theta of generation in radians
+ Float_t fThetaMax; //Maximum theta of generation in radians
+ Float_t fPhiMin; //Minimum phi of generation in radians
+ Float_t fPhiMax; //Maximum phi of generation in radians
+ Float_t fPMin; //Minimum momentum of generation in GeV/c
+ Float_t fPMax; //Minimum momentum of generation in GeV/c
+ Float_t fPtMin; //Minimum transverse momentum
+ Float_t fPtMax; //Maximum transverse momentum
+ Float_t fYMin; //Minimum rapidity
+ Float_t fYMax; //Maximum rapidity
+ TArrayF fVMin; //Minimum Decaylength
+ TArrayF fVMax; //Minimum Decaylength
+ Int_t fNpart; //Maximum number of particles per event
+ Float_t fParentWeight; //Parent Weight
+ Float_t fChildWeight; //ChildWeight
+ Int_t fAnalog; //Flag for anolog or pt-weighted generation
+ //
+ VertexSmear_t fVertexSmear; //Vertex Smearing mode
+ VertexSource_t fVertexSource; //Vertex source (internal/external)
+ Float_t fCutVertexZ; // Vertex cut in units of sigma_z
+ Int_t fTrackIt; // if 1, Track final state particles
+ AliVertexGenerator* fVertexGenerator; //! Generator for the vertex
+ TArrayF fOrigin; // Origin of event
+ TArrayF fOsigma; // Sigma of the Origin of event
+ TArrayF fVertex; //! Vertex of current event
- ClassDef(AliGenerator,1)
+ AliStack* fStack; //! Local pointer to stack
+ AliCollisionGeometry* fCollisionGeometry; //!Collision geometry
+ /*************************************************************************/
+ enum {kThetaRange = BIT(14),
+ kVertexRange = BIT(15),
+ kPhiRange = BIT(16),
+ kPtRange = BIT(17),
+ kYRange = BIT(18),
+ kMomentumRange = BIT(19)
+ };
+ ClassDef(AliGenerator,3) // Base class for event generators
};
#endif
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git://git.uio.no / u / mrichter / AliRoot.git / blobdiff