/*
$Log$
+Revision 1.19 2002/02/08 16:50:50 morsch
+Add name and title in constructor.
+
+Revision 1.18 2001/11/12 14:31:00 morsch
+Memory leaks fixed. (M. Bondila)
+
+Revision 1.17 2001/11/09 09:12:58 morsch
+Generalization by using AliGenReader object to read particles from file.
+
+Revision 1.16 2001/07/27 17:09:35 morsch
+Use local SetTrack, KeepTrack and SetHighWaterMark methods
+to delegate either to local stack or to stack owned by AliRun.
+(Piotr Skowronski, A.M.)
+
+Revision 1.15 2001/01/23 13:29:37 morsch
+Add method SetParticleCode and enum type Code_t to handle both PDG (new ntuples)
+and GEANT3 codes (old ntuples) in input file.
+
+Revision 1.14 2000/12/21 16:24:06 morsch
+Coding convention clean-up
+
+Revision 1.13 2000/11/30 07:12:50 alibrary
+Introducing new Rndm and QA classes
+
+Revision 1.12 2000/10/27 13:54:45 morsch
+Remove explicite reference to input file from constuctor.
+
+Revision 1.11 2000/10/02 21:28:06 fca
+Removal of useless dependecies via forward declarations
+
+Revision 1.10 2000/07/11 18:24:55 fca
+Coding convention corrections + few minor bug fixes
+
+Revision 1.9 2000/06/14 15:20:09 morsch
+Include clean-up (IH)
+
Revision 1.8 2000/06/09 20:36:44 morsch
All coding rule violations except RS3 corrected
*/
+
+// Event generator that using an instance of type AliGenReader
+// reads particles from a file and applies cuts.
+
#include <iostream.h>
#include "AliGenExtFile.h"
-#include "AliMC.h"
#include "AliRun.h"
-#include <TDirectory.h>
+#include <TParticle.h>
#include <TFile.h>
-#include <stdlib.h>
+#include <TTree.h>
+
ClassImp(AliGenExtFile)
AliGenExtFile::AliGenExtFile()
:AliGenerator(-1)
{
// Constructor
- fName="ExtFile";
- fTitle="Primaries from ext. File";
- fFileName="dtujet93.root";
- fTreeNtuple=0;
- fNcurrent=0;
//
// Read all particles
- fNpart=-1;
+ fNpart =- 1;
+ fReader = 0;
}
AliGenExtFile::AliGenExtFile(Int_t npart)
:AliGenerator(npart)
{
// Constructor
- fName="ExtFile";
- fTitle="Primaries from ext. File";
- fFileName="dtujet93.root";
- fTreeNtuple=0;
- fNcurrent=0;
+ fName = "ExtFile";
+ fTitle = "Primaries from ext. File";
+ fReader = 0;
}
AliGenExtFile::AliGenExtFile(const AliGenExtFile & ExtFile)
AliGenExtFile::~AliGenExtFile()
{
// Destructor
- delete fTreeNtuple;
+ delete fReader;
}
-//____________________________________________________________
-void AliGenExtFile::NtupleInit()
+//___________________________________________________________
+void AliGenExtFile::Init()
{
-//
-// reset the existing file environment and open a new root file if
-// the pointer to the Fluka tree is null
-
- TFile *pFile=0;
- if (fTreeNtuple==0) {
- if (!pFile) {
- pFile = new TFile(fFileName);
- pFile->cd();
- cout<<"I have opened "<<fFileName<<" file "<<endl;
- }
-// get the tree address in the Fluka boundary source file
- fTreeNtuple = (TTree*)gDirectory->Get("h888");
- } else {
- pFile = fTreeNtuple->GetCurrentFile();
- pFile->cd();
- }
-
- TTree *h2=fTreeNtuple;
-//Set branch addresses
-//Set branch addresses
- h2->SetBranchAddress("Nihead",&fNihead);
- h2->SetBranchAddress("Ihead",fIhead);
- h2->SetBranchAddress("Nrhead",&fNrhead);
- h2->SetBranchAddress("Rhead",fRhead);
- h2->SetBranchAddress("Idpart",&fIdpart);
- h2->SetBranchAddress("Theta",&fTheta);
- h2->SetBranchAddress("Phi",&fPhi);
- h2->SetBranchAddress("P",&fP);
- h2->SetBranchAddress("E",&fE);
+// Initialize
+ if (fReader) fReader->Init();
}
-
-//____________________________________________________________
+
void AliGenExtFile::Generate()
{
// Generate particles
- Float_t polar[3]= {0,0,0};
+ Float_t polar[3] = {0,0,0};
//
- Float_t origin[3]={0,0,0};
+ Float_t origin[3] = {0,0,0};
Float_t p[3];
Float_t random[6];
- Float_t prwn;
- Int_t i, j, nt, nTracks=0;
+ Int_t i, j, nt;
//
- NtupleInit();
- TTree *h2=fTreeNtuple;
- Int_t nentries = (Int_t) h2->GetEntries();
- // loop over number of particles
- Int_t nb = (Int_t)h2->GetEvent(fNcurrent);
- Int_t i5=fIhead[4];
- Int_t i6=fIhead[5];
-
for (j=0;j<3;j++) origin[j]=fOrigin[j];
- if(fVertexSmear==perEvent) {
- gMC->Rndm(random,6);
- for (j=0;j<3;j++) {
- origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
+ if(fVertexSmear == kPerTrack) {
+ Rndm(random,6);
+ for (j = 0; j < 3; j++) {
+ origin[j] += fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
}
- if (fNcurrent >= nentries) {
- printf("\n No more entries !!! !\n");
+ Int_t nTracks = fReader->NextEvent();
+ if (nTracks == 0) {
+ printf("\n No more events !!! !\n");
return;
}
-
-
- if (i5==0) {
- printf("\n This should never happen !\n");
- } else {
- printf("\n Next event contains %d tracks! \n", i6);
- nTracks=i6;
- }
- for (i=0; i<nTracks; i++) {
- fIdpart=gMC->PDGFromId(fIdpart);
- Double_t amass = TDatabasePDG::Instance()->GetParticle(fIdpart)->Mass();
- if(fE<=amass) {
- Warning("Generate","Particle %d no %d E = %f mass = %f\n",
- fIdpart,i,fE,amass);
- prwn=0;
+
+ for (i = 0; i < nTracks; i++) {
+
+
+ TParticle* iparticle = fReader->NextParticle();
+ Double_t theta = iparticle->Theta();
+ Double_t phi = iparticle->Phi();
+ if (phi > TMath::Pi()) phi -= 2.*TMath::Pi();
+ Double_t pmom = iparticle->P();
+ Double_t pz = iparticle->Pz();
+ Double_t e = iparticle->Energy();
+ Double_t pt = iparticle->Pt();
+ Double_t y;
+ if ((e-pz) == 0) {
+ y = 20.;
+ } else if ((e+pz) == 0.) {
+ y = -20.;
} else {
- prwn=sqrt((fE+amass)*(fE-amass));
+ y = 0.5*TMath::Log((e+pz)/(e-pz));
}
-
- fTheta *= TMath::Pi()/180.;
- fPhi = (fPhi-180)*TMath::Pi()/180.;
- if(fTheta<fThetaMin || fTheta>fThetaMax ||
- fPhi<fPhiMin || fPhi>fPhiMax ||
- prwn<fPMin || prwn>fPMax)
+
+ if(theta < fThetaMin || theta > fThetaMax ||
+ phi < fPhiMin || phi > fPhiMax ||
+ pmom < fPMin || pmom > fPMax ||
+ pt < fPtMin || pt > fPtMax ||
+ y < fYMin || y > fYMax )
{
- ;
- } else {
- p[0]=prwn*TMath::Sin(fTheta)*TMath::Cos(fPhi);
- p[1]=prwn*TMath::Sin(fTheta)*TMath::Sin(fPhi);
- p[2]=prwn*TMath::Cos(fTheta);
-
- if(fVertexSmear==perTrack) {
- gMC->Rndm(random,6);
- for (j=0;j<3;j++) {
- origin[j]=fOrigin[j]
- +fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
- TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
- }
+ printf("\n Not selected %d %f %f %f %f %f", i, theta, phi, pmom, pt, y);
+ delete iparticle;
+ continue;
+ }
+ p[0] = iparticle->Px();
+ p[1] = iparticle->Py();
+ p[2] = iparticle->Pz();
+ Int_t idpart = iparticle->GetPdgCode();
+ if(fVertexSmear==kPerTrack) {
+ Rndm(random,6);
+ for (j = 0; j < 3; j++) {
+ origin[j]=fOrigin[j]
+ +fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
- gAlice->SetTrack(fTrackIt,-1,fIdpart,p,origin,polar,0,"Primary",nt);
}
- fNcurrent++;
- nb = (Int_t)h2->GetEvent(fNcurrent);
- }
-
- TFile *pFile=0;
+ SetTrack(fTrackIt,-1,idpart,p,origin,polar,0,kPPrimary,nt);
+ }
+ TFile *pFile=0;
// Get AliRun object or create it
- if (!gAlice) {
- gAlice = (AliRun*)pFile->Get("gAlice");
- if (gAlice) printf("AliRun object found on file\n");
- if (!gAlice) gAlice = new AliRun("gAlice","Alice test program");
- }
- TTree *fAli=gAlice->TreeK();
- if (fAli) pFile =fAli->GetCurrentFile();
- pFile->cd();
+ if (!gAlice) {
+ gAlice = (AliRun*)pFile->Get("gAlice");
+ if (gAlice) printf("AliRun object found on file\n");
+ if (!gAlice) gAlice = new AliRun("gAlice","Alice test program");
+ }
+ TTree *fAli=gAlice->TreeK();
+ if (fAli) pFile =fAli->GetCurrentFile();
+ pFile->cd();
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff