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DataReaderVSD.cxx
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97 lines (85 loc) · 2.33 KB
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
/// \file DataReaderVSD.cxx
/// \brief VSD specific reading from file(s) (Visualisation Summary Data)
/// \author julian.myrcha@cern.ch
/// \author p.nowakowski@cern.ch
#include <EventVisualisationDetectors/DataReaderVSD.h>
#include <TSystem.h>
#include <TEveManager.h>
#include <TFile.h>
#include <TPRegexp.h>
#include <TEveTrackPropagator.h>
#include <TEveEventManager.h>
#include <TKey.h>
namespace o2
{
namespace event_visualisation
{
DataReaderVSD::DataReaderVSD(DataInterpreter* interpreter)
: DataReader(interpreter),
mFile(nullptr),
mMaxEv(-1),
mCurEv(-1)
{
}
DataReaderVSD::~DataReaderVSD()
{
if (mEvDirKeys.size() > 0) {
for (auto obj : mEvDirKeys) {
delete obj;
}
mEvDirKeys.clear();
}
if (mFile) {
mFile->Close();
delete mFile;
mFile = nullptr;
}
}
void DataReaderVSD::open()
{
TString ESDFileName = "events_0.root";
Warning("GotoEvent", "OPEN");
mMaxEv = -1;
mCurEv = -1;
mFile = TFile::Open(ESDFileName);
if (!mFile) {
Error("VSD_Reader", "Can not open file '%s' ... terminating.",
ESDFileName.Data());
gSystem->Exit(1);
}
assert(mEvDirKeys.size() == 0);
TPMERegexp name_re("Event\\d+");
TObjLink* lnk = mFile->GetListOfKeys()->FirstLink();
while (lnk) {
if (name_re.Match(lnk->GetObject()->GetName())) {
mEvDirKeys.push_back((TKey*)lnk->GetObject());
}
lnk = lnk->Next();
}
mMaxEv = mEvDirKeys.size();
if (mMaxEv == 0) {
Error("VSD_Reader", "No events to show ... terminating.");
gSystem->Exit(1);
}
}
TObject* DataReaderVSD::getEventData(int ev)
{
if (ev < 0 || ev >= this->mMaxEv) {
Warning("GotoEvent", "Invalid event id %d.", ev);
return nullptr;
}
this->mCurEv = ev;
return this->mEvDirKeys[this->mCurEv]->ReadObj();
}
} // namespace event_visualisation
} // namespace o2