#include "AliHeader.h"
#include "AliStack.h"
#include "AliGenEventHeader.h"
+#include "AliGenReader.h"
#include <TParticle.h>
#include <TFile.h>
AliGenExtFile::AliGenExtFile()
:AliGenMC(),
fFileName(0),
- fReader(0)
+ fReader(0),
+ fStartEvent(0)
{
// Constructor
//
// Read all particles
- fNpart =- 1;
+ fNpart = -1;
}
AliGenExtFile::AliGenExtFile(Int_t npart)
:AliGenMC(npart),
fFileName(0),
- fReader(0)
+ fReader(0),
+ fStartEvent(0)
{
// Constructor
fName = "ExtFile";
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();
+ // 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;
+ }
+ TParticle* iparticle = 0x0;
+ while ((iparticle=fReader->NextParticle()) ) ;
+ cout << "Skipping event " << ie << endl;
+ }
+
while(1) {
Int_t nTracks = fReader->NextEvent();
if (nTracks == 0) {
p[0] = jparticle->Px();
p[1] = jparticle->Py();
p[2] = jparticle->Pz();
+ p[3] = jparticle->Energy();
+
Int_t idpart = jparticle->GetPdgCode();
if(fVertexSmear==kPerTrack)
{
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] + jparticle->Vx();
origin[1] = fVertex[1] + jparticle->Vy();
origin[2] = fVertex[2] + jparticle->Vz();
+ time = fTime + jparticle->T();
}
-
- Int_t decayed = jparticle->GetFirstDaughter();
- Int_t doTracking = fTrackIt && selected && !(jparticle->TestBit(kDoneBit));
+ Int_t doTracking = fTrackIt && selected && (jparticle->TestBit(kTransportBit));
Int_t parent = jparticle->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
AliGenEventHeader * header = new AliGenEventHeader();
header->SetNProduced(fNprimaries);
header->SetPrimaryVertex(fVertex);
+ header->SetInteractionTime(fTime);
AddHeader(header);
break;
CdEventFile();
}
+//___________________________________________________________
void AliGenExtFile::CdEventFile()
{
// CD back to the event file
- (AliRunLoader::GetRunLoader())->CdGAFile();
+ AliRunLoader::Instance()->CdGAFile();
}