-#include "AliHBTPositionRandomizer.h"
+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/* $Id$ */
+
//___________________________________________________
////////////////////////////////////////////////////////////////////////////////
//
//
////////////////////////////////////////////////////////////////////////////////
+#include <TMath.h>
#include <TRandom.h>
+
#include "AliAOD.h"
+#include "AliHBTPositionRandomizer.h"
+#include "AliLog.h"
#include "AliVAODParticle.h"
ClassImp(AliHBTPositionRandomizer)
+const Int_t AliHBTPositionRandomizer::fgkNumberOfPids = 10;
+
/*********************************************************************/
AliHBTPositionRandomizer::AliHBTPositionRandomizer():
fReader(0x0),
- fRandomizer(0x0),
- fModel(0),
+ fDefaultRandomizer(0x0),
+ fRandomizers(0x0),
+ fNPid(0),
+ fPids(0x0),
fAddToExistingPos(kFALSE),
fOnlyParticlesFromVertex(kFALSE),
fRandomizeTracks(kFALSE),
AliHBTPositionRandomizer::AliHBTPositionRandomizer(AliReader* reader):
fReader(reader),
- fRandomizer(new AliHBTRndmGaussBall(8.0)),
- fModel(0),
+ fRandomizers(new TObjArray(fgkNumberOfPids)),
+ fNPid(1),
+ fPids(new Int_t[fgkNumberOfPids]),
fAddToExistingPos(kFALSE),
fOnlyParticlesFromVertex(kFALSE),
fRandomizeTracks(kFALSE),
fVZ(0.0)
{
//constructor
+ fRandomizers->AddAt(new AliHBTRndmGaussBall(8.0,0.0,0.0),0);
}
/*********************************************************************/
AliHBTPositionRandomizer::AliHBTPositionRandomizer(const AliHBTPositionRandomizer& in):
AliReader(in),
fReader(),
- fRandomizer(0x0),
- fModel(0),
+ fRandomizers(0x0),
+ fNPid(0),
+ fPids(0x0),
fAddToExistingPos(kFALSE),
fOnlyParticlesFromVertex(kFALSE),
fRandomizeTracks(kFALSE),
{
//dtor
delete fReader;
- delete fRandomizer;
+ delete fRandomizers;
+ delete [] fPids;
}
/*********************************************************************/
AliHBTPositionRandomizer& AliHBTPositionRandomizer::operator=(const AliHBTPositionRandomizer& in)
}
/*********************************************************************/
-AliAOD* AliHBTPositionRandomizer::GetEventSim()
+AliAOD* AliHBTPositionRandomizer::GetEventSim() const
{
// gets from fReader and randomizes current particle event
- if (fReader == 0x0) return 0x0;
+ if (fReader == 0x0)
+ {
+ Error("GetEventSim","Reader is null");
+ return 0x0;
+ }
AliAOD *e = fReader->GetEventSim();
- if (e->IsRandomized() == kFALSE) Randomize(e);
+ if (e)
+ if (e->IsRandomized() == kFALSE)
+ Randomize(e);
return e;
}
/*********************************************************************/
-AliAOD* AliHBTPositionRandomizer::GetEventRec()
+AliAOD* AliHBTPositionRandomizer::GetEventRec() const
{
// gets from fReader and randomizes current track event
- if (fReader == 0x0) return 0x0;
+ if (fReader == 0x0)
+ {
+ Error("GetEventRec","Reader is null");
+ return 0x0;
+ }
AliAOD *e = fReader->GetEventRec();
- if (fRandomizeTracks) if (e->IsRandomized() == kFALSE) Randomize(e);
+ if (fRandomizeTracks && e) if (e->IsRandomized() == kFALSE) Randomize(e);
return e;
}
/*********************************************************************/
{
// randomizes postions of all particles in the event
static const Double_t kfmtocm = 1.e-13;
- if (AliVAODParticle::GetDebug() > 5) Info("Randomize(AliAOD*)","");
+ AliDebug(5," ");
if (event == 0x0) return;
for (Int_t i = 0; i < event->GetNumberOfParticles(); i++)
{
AliVAODParticle* p = event->GetParticle(i);
Double_t x,y,z,t=0.0;
- fRandomizer->Randomize(x,y,z,p);
+ AliHBTRndm* r = GetRandomizer(p->GetPdgCode());
+ r->Randomize(x,y,z,t,p);
Double_t nx = x*kfmtocm;
Double_t ny = y*kfmtocm;
}
/*********************************************************************/
-void AliHBTPositionRandomizer::SetGaussianBall(Double_t r)
+AliHBTRndm* AliHBTPositionRandomizer::GetRandomizer(Int_t pdg) const
+{
+ //returns randomizer for a given pdg
+ Int_t idx = GetRandomizerIndex(pdg);//in most of cases
+ if (idx < 0) idx = 0;//if not found return a default one
+ return (AliHBTRndm*)fRandomizers->At(idx);
+}
+/*********************************************************************/
+Int_t AliHBTPositionRandomizer::GetRandomizerIndex(Int_t pdg) const
+{
+ //returns randomizer index for a given pdg
+
+ if (pdg == 0) return 0;
+
+ for (Int_t i=1; i < fNPid; i++)
+ {
+ if (fPids[i] == pdg)
+ return i;
+ }
+
+ return -1;
+}
+/*********************************************************************/
+
+void AliHBTPositionRandomizer::SetRandomizer(Int_t pid, AliHBTRndm* rndm)
+{
+ //sets the randomizer for a given particle type
+ if (rndm == 0x0)
+ {
+ Error("SetRandomizer","Randomizer is null");
+ return;
+ }
+
+ Int_t idx = GetRandomizerIndex(pid);
+ if (idx >= 0)
+ {
+ delete fRandomizers->At(idx);
+ fRandomizers->AddAt(rndm,idx);
+ }
+
+ if (fNPid == fgkNumberOfPids)
+ {
+ Error("SetRandomizer","There is no more space in the array");
+ return;
+ }
+
+ fPids[fNPid] = pid;
+ fRandomizers->AddAt(rndm,fNPid);
+ fNPid++;
+}
+/*********************************************************************/
+
+void AliHBTPositionRandomizer::SetGaussianBall(Int_t pid, Double_t r, Double_t meantime, Double_t sigmatime)
{
//Sets Gaussian Ball Model
- SetGaussianBall(r,r,r);
+ SetGaussianBall(pid,r,r,r,meantime,sigmatime);
}
/*********************************************************************/
-void AliHBTPositionRandomizer::SetGaussianBall(Double_t rx, Double_t ry, Double_t rz)
+void AliHBTPositionRandomizer::SetGaussianBall(Int_t pid, Double_t rx, Double_t ry, Double_t rz, Double_t meantime, Double_t sigmatime)
{
//Sets Gaussian Ball Model
- delete fRandomizer;
- fRandomizer = new AliHBTRndmGaussBall(rx,ry,rz);
+ AliHBTRndm* rndm = new AliHBTRndmGaussBall(rx,ry,rz,meantime,sigmatime);
+ SetRandomizer(pid,rndm);
}
/*********************************************************************/
-void AliHBTPositionRandomizer::SetCyllinderSurface(Double_t r, Double_t l)
+void AliHBTPositionRandomizer::SetCyllinderSurface(Int_t pid, Double_t r, Double_t l)
{
//Sets Cylinder Surface Model
- delete fRandomizer;
- fRandomizer = new AliHBTRndmCyllSurf(r,l);
+ AliHBTRndm* rndm = new AliHBTRndmCyllSurf(r,l);
+ SetRandomizer(pid,rndm);
}
/*********************************************************************/
fVY = y;
fVZ = z;
}
+
+
+void AliHBTPositionRandomizer::SetEllipse(Int_t pid, Double_t rx, Double_t ryz)
+{
+//sets the ellipse randomization for the given pid
+ AliHBTRndm* rndm = new AliHBTRndmEllipse(rx,ryz);
+ SetRandomizer(pid,rndm);
+}
+
/*********************************************************************/
//_____________________________________________________________________
///////////////////////////////////////////////////////////////////////
AliHBTRndmGaussBall::AliHBTRndmGaussBall():
fRx(0.0),
fRy(0.0),
- fRz(0.0)
+ fRz(0.0),
+ fTmean(0.0),
+ fTsigma(0.0)
{
//constructor
}
/*********************************************************************/
-AliHBTRndmGaussBall::AliHBTRndmGaussBall(Float_t r):
+AliHBTRndmGaussBall::AliHBTRndmGaussBall(Float_t r, Double_t meantime, Double_t sigmatime):
fRx(r),
fRy(r),
- fRz(r)
+ fRz(r),
+ fTmean(meantime),
+ fTsigma(sigmatime)
{
//constructor
}
/*********************************************************************/
-AliHBTRndmGaussBall::AliHBTRndmGaussBall(Float_t rx, Float_t ry, Float_t rz):
+AliHBTRndmGaussBall::AliHBTRndmGaussBall(Float_t rx, Float_t ry, Float_t rz, Double_t meantime, Double_t sigmatime):
fRx(rx),
fRy(ry),
- fRz(rz)
+ fRz(rz),
+ fTmean(meantime),
+ fTsigma(sigmatime)
{
//constructor
}
/*********************************************************************/
-void AliHBTRndmGaussBall::Randomize(Double_t& x,Double_t& y,Double_t&z, AliVAODParticle*/*particle*/) const
+
+AliHBTRndmEllipse::AliHBTRndmEllipse(Float_t rmin, Float_t rmax):
+ fRmin(rmin),
+ fRmax(rmax)
+{
+ //constructor
+}
+
+/*********************************************************************/
+
+void AliHBTRndmGaussBall::Randomize(Double_t& x,Double_t& y,Double_t&z,Double_t&t, AliVAODParticle*/*particle*/) const
{
//randomizez gauss for each coordinate separately
x = gRandom->Gaus(0.0,fRx);
y = gRandom->Gaus(0.0,fRy);
z = gRandom->Gaus(0.0,fRz);
+
+ if (fTsigma == 0.0)
+ {
+ t = fTmean;
+ return;
+ }
+
+ t = gRandom->Gaus(fTmean,fTsigma);
+
}
/*********************************************************************/
//_____________________________________________________________________
// //
///////////////////////////////////////////////////////////////////////
-void AliHBTRndmCyllSurf::Randomize(Double_t& x,Double_t& y,Double_t&z, AliVAODParticle* particle) const
+void AliHBTRndmCyllSurf::Randomize(Double_t& x,Double_t& y,Double_t&z,Double_t&/*t*/, AliVAODParticle* particle) const
{
//Randomizes x,y,z
Double_t r = fR + gRandom->Gaus(0.0, 1.0);
y = sf*particle->Py();
z = gRandom->Uniform(-fL,fL);
}
+
+/*********************************************************************/
+/*********************************************************************/
+
+void AliHBTRndmEllipse::Randomize(Double_t& x, Double_t& y, Double_t& z,Double_t&/*t*/, AliVAODParticle*p) const
+{
+ // p=0; //workaround - fix this damn little thingy
+ double R;
+ double phi=p->Phi();
+
+ R=fRmin+(fRmax-fRmin)*TMath::Sin(phi);
+ x=R*TMath::Sin(phi);
+ y=R*TMath::Cos(phi);
+ z=z;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff