#include <Riostream.h>
+#include "AliLog.h"
#include "AliGenExtFile.h"
#include "AliRunLoader.h"
#include "AliHeader.h"
+#include "AliStack.h"
#include "AliGenEventHeader.h"
+#include "AliGenReader.h"
#include <TParticle.h>
#include <TFile.h>
#include <TTree.h>
+using std::cout;
+using std::endl;
ClassImp(AliGenExtFile)
AliGenExtFile::AliGenExtFile()
- :AliGenMC()
+ :AliGenMC(),
+ fFileName(0),
+ fReader(0),
+ fStartEvent(0)
{
// Constructor
//
// Read all particles
- fNpart =- 1;
- fReader = 0;
+ fNpart = -1;
}
AliGenExtFile::AliGenExtFile(Int_t npart)
- :AliGenMC(npart)
+ :AliGenMC(npart),
+ fFileName(0),
+ fReader(0),
+ fStartEvent(0)
{
// Constructor
fName = "ExtFile";
fTitle = "Primaries from ext. File";
- fReader = 0;
}
-AliGenExtFile::AliGenExtFile(const AliGenExtFile & ExtFile):
- AliGenMC(ExtFile)
-{
-// Copy constructor
- ExtFile.Copy(*this);
-}
//____________________________________________________________
AliGenExtFile::~AliGenExtFile()
{
if (fReader) fReader->Init();
}
-
+//___________________________________________________________
void AliGenExtFile::Generate()
{
// Generate particles
- Float_t polar[3] = {0,0,0};
+ Double_t polar[3] = {0,0,0};
//
- Float_t origin[3] = {0,0,0};
- Float_t p[3];
+ Double_t origin[3] = {0,0,0};
+ Double_t time = 0.;
+ Double_t p[4];
Float_t random[6];
Int_t i = 0, j, nt;
//
//
if (fVertexSmear == kPerEvent) Vertex();
- while(1) {
+ // Fast forward up to start Event
+ for (Int_t ie=0; ie<fStartEvent; ++ie ) {
Int_t nTracks = fReader->NextEvent();
if (nTracks == 0) {
// printf("\n No more events !!! !\n");
Warning("AliGenExtFile::Generate","\nNo more events in external file!!!\nLast event may be empty or incomplete.\n");
return;
}
+ for (Int_t i=0; i<nTracks; ++i) {
+ if (NULL == fReader->NextParticle())
+ AliFatal("Error while skipping tracks");
+ }
+ cout << "Skipping event " << ie << endl;
+ }
+ fStartEvent = 0; // do not skip events the second time
- // Generated event header
-
- AliRunLoader * inRunLoader = fReader->GetRunLoader();
- if(inRunLoader) {
- AliGenEventHeader * inHeader = inRunLoader->GetHeader()->GenEventHeader();
- if (inHeader) {
- AliGenEventHeader * header = new AliGenEventHeader(*inHeader);
- AliRunLoader::GetRunLoader()->GetHeader()->SetGenEventHeader(header);
- }
+ while(1) {
+ Int_t nTracks = fReader->NextEvent();
+ if (nTracks == 0) {
+ // printf("\n No more events !!! !\n");
+ Warning("AliGenExtFile::Generate","\nNo more events in external file!!!\nLast event may be empty or incomplete.\n");
+ return;
}
+
//
// Particle selection loop
//
//
// Stack filling loop
//
+ fNprimaries = 0;
for (i = 0; i < nTracks; i++) {
- TParticle* iparticle = fReader->NextParticle();
- Bool_t selected = KinematicSelection(iparticle,0);
+ TParticle* jparticle = fReader->NextParticle();
+ Bool_t selected = KinematicSelection(jparticle,0);
if (!selected) continue;
- p[0] = iparticle->Px();
- p[1] = iparticle->Py();
- p[2] = iparticle->Pz();
- Int_t idpart = iparticle->GetPdgCode();
+ p[0] = jparticle->Px();
+ p[1] = jparticle->Py();
+ p[2] = jparticle->Pz();
+ p[3] = jparticle->Energy();
+
+ Int_t idpart = jparticle->GetPdgCode();
if(fVertexSmear==kPerTrack)
{
Rndm(random,6);
fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
+ Rndm(random,2);
+ time = fTimeOrigin + fOsigma[2]/TMath::Ccgs()*
+ TMath::Cos(2*random[0]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[1]));
} else {
- origin[0] = fVertex[0] + iparticle->Vx();
- origin[1] = fVertex[1] + iparticle->Vy();
- origin[2] = fVertex[2] + iparticle->Vz();
+ origin[0] = fVertex[0] + jparticle->Vx();
+ origin[1] = fVertex[1] + jparticle->Vy();
+ origin[2] = fVertex[2] + jparticle->Vz();
+ time = fTime + jparticle->T();
}
+ Int_t doTracking = fTrackIt && selected && (jparticle->TestBit(kTransportBit));
+ Int_t parent = jparticle->GetFirstMother();
- Int_t decayed = iparticle->GetFirstDaughter();
- Int_t doTracking = fTrackIt && (decayed < 0) && (TMath::Abs(idpart) > 10) && selected;
- Int_t parent = iparticle->GetFirstMother();
-
- PushTrack(doTracking,parent,idpart,p,origin,polar,0,kPPrimary,nt);
+ PushTrack(doTracking, parent, idpart,
+ p[0], p[1], p[2], p[3], origin[0], origin[1], origin[2], time,
+ polar[0], polar[1], polar[2],
+ kPPrimary, nt, 1., jparticle->GetStatusCode());
+
KeepTrack(nt);
+ fNprimaries++;
} // track loop
+
+ // Generated event header
+ AliGenEventHeader * header = new AliGenEventHeader();
+ header->SetNProduced(fNprimaries);
+ header->SetPrimaryVertex(fVertex);
+ header->SetInteractionTime(fTime);
+ AddHeader(header);
break;
} // event loop
CdEventFile();
}
+//___________________________________________________________
void AliGenExtFile::CdEventFile()
{
// CD back to the event file
- (AliRunLoader::GetRunLoader())->CdGAFile();
-}
-
-
-AliGenExtFile& AliGenExtFile::operator=(const AliGenExtFile& rhs)
-{
-// Assignment operator
- rhs.Copy(*this);
- return *this;
-}
-
-
-void AliGenExtFile::Copy(TObject&) const
-{
- //
- // Copy
- //
- Fatal("Copy","Not implemented!\n");
+ AliRunLoader::Instance()->CdGAFile();
}
-
-