Reading PMT gains from an external file

[u/mrichter/AliRoot.git] / EVGEN / AliGenExtFile.cxx

diff --git a/EVGEN/AliGenExtFile.cxx b/EVGEN/AliGenExtFile.cxx
index bc35f381073284fff7bb77af4475d121102f6114..8821335bfacf065b217f8d827aa95b675f2371bd 100644 (file)
--- a/EVGEN/AliGenExtFile.cxx
+++ b/EVGEN/AliGenExtFile.cxx
@@ -36,6 +36,7 @@
 #include "AliHeader.h"
 #include "AliStack.h"
 #include "AliGenEventHeader.h"
+#include "AliGenReader.h"
 
 #include <TParticle.h>
 #include <TFile.h>
@@ -52,7 +53,7 @@ AliGenExtFile::AliGenExtFile()
 //  Constructor
 //
 //  Read all particles
-    fNpart  =- 1;
+    fNpart  = -1;
 }
 
 AliGenExtFile::AliGenExtFile(Int_t npart)
@@ -87,6 +88,7 @@ void AliGenExtFile::Generate()
   Double_t polar[3]  = {0,0,0};
   //
   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;
@@ -153,17 +155,21 @@ void AliGenExtFile::Generate()
                    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();
        }
-       Double_t tof = jparticle->T();
        Int_t doTracking = fTrackIt && selected && (jparticle->TestBit(kTransportBit));
        Int_t parent     = jparticle->GetFirstMother();
        
        PushTrack(doTracking, parent, idpart,
-                 p[0], p[1], p[2], p[3], origin[0], origin[1], origin[2], tof,
+                 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());
 
@@ -176,6 +182,7 @@ void AliGenExtFile::Generate()
     AliGenEventHeader * header = new AliGenEventHeader();
     header->SetNProduced(fNprimaries);
     header->SetPrimaryVertex(fVertex);
+    header->SetInteractionTime(fTime);
     AddHeader(header);
     break;