New file.

diff --git a/EVE/alice-macros/kine_daughter_tracks.C b/EVE/alice-macros/kine_daughter_tracks.C
new file mode 100644 (file)
index 0000000..ec6c688
--- /dev/null
+++ b/EVE/alice-macros/kine_daughter_tracks.C
@@ -0,0 +1,63 @@
+// Import daughters of track with given label.
+
+Reve::TrackList*
+kine_daughter_tracks(Int_t label, Reve::TrackList* cont = 0)
+{
+  using namespace Reve;
+
+  gSystem->IgnoreSignal(kSigSegmentationViolation, true);
+  if (label < 0) {
+    Warning("kine_daughter_tracks", "label not set.");
+    return 0;
+  }
+ 
+  //Bool_t create_cont;
+  //create_cont = cont ? 0:1;
+  AliRunLoader* rl =  Alieve::Event::AssertRunLoader();
+  rl->LoadKinematics();
+  AliStack* stack = rl->Stack();
+
+  TParticle* p = stack->Particle(label);
+  if (p->GetNDaughters()) 
+  {
+    if (cont == 0) 
+    {
+      printf("create container \n");
+      cont =  
+       new TrackList(Form("%d kine_daughter_tracks %d", p->GetNDaughters(), label));
+
+      Reve::TrackRnrStyle* rnrStyle = cont->GetRnrStyle();
+      // !!! Watch the '-', apparently different sign convention then for ESD.
+      rnrStyle->SetMagField( - gAlice->Field()->SolenoidField() );
+      char tooltip[1000];
+      sprintf(tooltip,"%d, mother %d", p->GetNDaughters(), label);
+      cont->SetTitle(tooltip);  
+      cont->SelectByPt(0, 100);
+      rnrStyle->fColor = 8;  
+      rnrStyle->fMaxOrbs = 8;  
+      gReve->AddRenderElement(cont);
+    }
+
+    for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d) 
+    {  
+      TParticle* dp = stack->Particle(d);
+      Track* track = new Reve::Track(dp, d, cont->GetRnrStyle());  
+      char form[1000];
+      sprintf(form,"%s [%d]", dp->GetName(), d);
+      track->SetName(form);
+      gReve->AddRenderElement(cont, track);
+    }
+
+    cont->UpdateItems(); // update list tree
+    cont->MakeTracks();
+    cont->MakeMarkers();
+    gReve->Redraw3D();
+    return cont;
+  }
+  else 
+  {
+    printf("Particle %d does not have daughters.", label);
+    return 0;
+  }
+
+}