From 2d11c5b077bb2c0818dd78256acb3e66e495e1d6 Mon Sep 17 00:00:00 2001
From: Volker Friese <v.friese@gsi.de>
Date: Thu, 29 Apr 2021 20:19:32 +0200
Subject: [PATCH] Restored primary vertex branch in event-based reconstruction.
Refs #2096.
---
reco/global/CbmFindPrimaryVertex.cxx | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/reco/global/CbmFindPrimaryVertex.cxx b/reco/global/CbmFindPrimaryVertex.cxx
index e882246617..caf43ebea2 100644
--- a/reco/global/CbmFindPrimaryVertex.cxx
+++ b/reco/global/CbmFindPrimaryVertex.cxx
@@ -107,10 +107,14 @@ InitStatus CbmFindPrimaryVertex::Init()
}
// Create and register CbmVertex object
- if (!fEvents) {
- fPrimVert = new CbmVertex("Primary Vertex", "Global");
- ioman->Register("PrimaryVertex.", "Global", fPrimVert, IsOutputBranchPersistent("PrimaryVertex"));
- }
+ // if (!fEvents) {
+ // TODO: This is here for legacy, since many analysis tasks use the vertex branch instead
+ // of retrieving the vertex from the event object. It shall be removed after the all analysis tasks
+ // are adjusted. Neither in event-based nor in time-based reconstruction a branch with a single
+ // vertex object makes sense.
+ fPrimVert = new CbmVertex("Primary Vertex", "Global");
+ ioman->Register("PrimaryVertex.", "Global", fPrimVert, IsOutputBranchPersistent("PrimaryVertex"));
+ // }
// Call the Init method of the vertex finder
fFinder->Init();
@@ -142,6 +146,7 @@ void CbmFindPrimaryVertex::Exec(Option_t*)
// Event-based mode
else {
+ fPrimVert->Reset(); // TODO: Legacy
nEvents = fEvents->GetEntriesFast();
for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
CbmEvent* event = dynamic_cast<CbmEvent*>(fEvents->At(iEvent));
@@ -149,6 +154,9 @@ void CbmFindPrimaryVertex::Exec(Option_t*)
result = fFinder->FindEventVertex(event, fTracks);
LOG(debug) << GetName() << ": Event " << iEvent << " " << event->GetVertex()->ToString();
nTracksUsed += result;
+
+ // Legacy: copy event vertex object to event branch
+ if (iEvent == 0) *fPrimVert = *(event->GetVertex());
}
}
--
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