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// $Id: FillerMCEventInfo.cc,v 1.5 2009/03/22 10:00:29 loizides Exp $
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#include "MitProd/TreeFiller/interface/FillerMCEventInfo.h"
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#include "FWCore/MessageLogger/interface/MessageLogger.h"
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#include "DataFormats/Common/interface/Handle.h"
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#include "DataFormats/HepMCCandidate/interface/PdfInfo.h"
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#include "SimDataFormats/HepMCProduct/interface/HepMCProduct.h"
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#include "MitAna/DataTree/interface/Names.h"
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#include "MitAna/DataTree/interface/MCEventInfo.h"
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#include "MitProd/ObjectService/interface/ObjectService.h"
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using namespace std;
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using namespace edm;
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using namespace mithep;
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//--------------------------------------------------------------------------------------------------
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FillerMCEventInfo::FillerMCEventInfo(const ParameterSet &cfg, const char *name, bool active) :
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BaseFiller(cfg,"MCEventInfo",active),
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evtName_(Conf().getUntrackedParameter<string>("evtName",Names::gkMCEvtInfoBrn)),
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genHepMCEvName_(Conf().getUntrackedParameter<string>("genHepMCEventEdmName","source")),
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genEvWeightName_(Conf().getUntrackedParameter<string>("genEventWeightEdmName","genEventWeight")),
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genEvScaleName_(Conf().getUntrackedParameter<string>("genEventScaleEdmName","genEventScale")),
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genEvProcIdName_(Conf().getUntrackedParameter<string>("genEventProcIdEdmName","genEventProcID")),
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genPdfInfoName_(Conf().getUntrackedParameter<string>("genPdfInfoEdmName","genEventPdfInfo")),
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eventInfo_(new MCEventInfo())
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{
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// Constructor.
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}
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//--------------------------------------------------------------------------------------------------
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FillerMCEventInfo::~FillerMCEventInfo()
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{
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// Destructor.
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delete eventInfo_;
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}
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//--------------------------------------------------------------------------------------------------
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void FillerMCEventInfo::BookDataBlock(TreeWriter &tws)
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{
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// Create run info tre and book our branches.
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tws.AddBranch(evtName_,&eventInfo_);
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OS()->add<mithep::MCEventInfo>(eventInfo_,evtName_);
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}
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//--------------------------------------------------------------------------------------------------
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void FillerMCEventInfo::FillDataBlock(const edm::Event &event,
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const edm::EventSetup &setup)
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{
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// Fill our data structures.
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if (event.isRealData()) {
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PrintErrorAndExit("Expected monte-carlo record, but did not get it. Aborting.");
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}
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Handle<edm::HepMCProduct> hHepMCProduct;
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if (genHepMCEvName_.empty() || !GetProductSafe(genHepMCEvName_, hHepMCProduct, event)) {
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if (!genEvWeightName_.empty()) {
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Handle<double> genEventWeight;
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GetProduct(genEvWeightName_, genEventWeight, event);
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eventInfo_->SetWeight(*genEventWeight);
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}
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if (!genEvScaleName_.empty()) {
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Handle<double> genEventScale;
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GetProduct(genEvScaleName_, genEventScale, event);
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eventInfo_->SetScale(*genEventScale);
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}
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if (!genEvProcIdName_.empty()) {
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Handle<int> genEventProcId;
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GetProduct(genEvProcIdName_, genEventProcId, event);
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eventInfo_->SetProcessId(*genEventProcId);
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}
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if (!genPdfInfoName_.empty()) {
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Handle<reco::PdfInfo> genPdfInfo;
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GetProduct(genPdfInfoName_, genPdfInfo, event);
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eventInfo_->SetId1(genPdfInfo->id1);
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eventInfo_->SetId2(genPdfInfo->id2);
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eventInfo_->SetPdf1(genPdfInfo->pdf1);
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eventInfo_->SetPdf2(genPdfInfo->pdf2);
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eventInfo_->SetScalePdf(genPdfInfo->scalePDF);
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eventInfo_->SetX1(genPdfInfo->pdf1);
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eventInfo_->SetX2(genPdfInfo->pdf2);
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}
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} else {
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const HepMC::GenEvent *genEvt = hHepMCProduct->GetEvent();
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eventInfo_->SetScale(genEvt->event_scale());
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eventInfo_->SetProcessId(genEvt->signal_process_id());
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HepMC::WeightContainer wc = genEvt->weights();
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if (wc.size() > 0)
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eventInfo_->SetWeight(wc[0]);
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const HepMC::PdfInfo *genPdfInfo = genEvt->pdf_info();
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eventInfo_->SetId1(genPdfInfo->id1());
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eventInfo_->SetId2(genPdfInfo->id2());
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eventInfo_->SetPdf1(genPdfInfo->pdf1());
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eventInfo_->SetPdf2(genPdfInfo->pdf2());
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eventInfo_->SetScalePdf(genPdfInfo->scalePDF());
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eventInfo_->SetX1(genPdfInfo->pdf1());
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eventInfo_->SetX2(genPdfInfo->pdf2());
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}
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}
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