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// -*- C++ -*-
//
// Package: LHE2HepMCConverter
// Class: LHE2HepMCConverter
//
/**\class LHE2HepMCConverter LHE2HepMCConverter.cc GeneratorInterface/LHE2HepMCConverter/src/LHE2HepMCConverter.cc
Description: [one line class summary]
Implementation:
[Notes on implementation]
*/
//
// Original Author: Piergiulio Lenzi,40 1-B01,+41227671638,
// Created: Wed Aug 31 19:02:24 CEST 2011
//
//
// system include files
#include <memory>
// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/one/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/Run.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "DataFormats/Common/interface/Handle.h"
#include "SimDataFormats/GeneratorProducts/interface/LHEEventProduct.h"
#include "SimDataFormats/GeneratorProducts/interface/LHERunInfoProduct.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
//
// class declaration
//
class LHE2HepMCConverter : public edm::one::EDProducer<edm::one::WatchRuns> {
public:
explicit LHE2HepMCConverter(const edm::ParameterSet&);
~LHE2HepMCConverter() override = default;
static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
protected:
// lhef::LHERunInfo *lheRunInfo() { return lheRunInfo_.get(); }
private:
void produce(edm::Event&, const edm::EventSetup&) override;
void beginRun(edm::Run const&, edm::EventSetup const&) override;
void endRun(edm::Run const&, edm::EventSetup const&) override {}
// ----------member data ---------------------------
const LHERunInfoProduct* _lheRunSrc;
const edm::InputTag _lheEventSrcTag;
const edm::InputTag _lheRunSrcTag;
const edm::EDGetTokenT<LHEEventProduct> eventProductToken_;
const edm::EDGetTokenT<LHERunInfoProduct> runInfoProductToken_;
// std::shared_ptr<lhef::LHERunInfo> lheRunInfo_;
};
//
// constants, enums and typedefs
//
//
// static data member definitions
//
//
// constructors and destructor
//
LHE2HepMCConverter::LHE2HepMCConverter(const edm::ParameterSet& iConfig)
: _lheRunSrc(nullptr),
_lheEventSrcTag(iConfig.getParameter<edm::InputTag>("LHEEventProduct")),
_lheRunSrcTag(iConfig.getParameter<edm::InputTag>("LHERunInfoProduct")),
eventProductToken_(consumes<LHEEventProduct>(_lheEventSrcTag)),
runInfoProductToken_(consumes<LHERunInfoProduct, edm::InRun>(_lheRunSrcTag)) {
//register your products
produces<edm::HepMCProduct>("unsmeared");
}
//
// member functions
//
// ------------ method called to produce the data ------------
void LHE2HepMCConverter::produce(edm::Event& iEvent, const edm::EventSetup& iSetup) {
using namespace edm;
const edm::Handle<LHEEventProduct>& lheEventSrc = iEvent.getHandle(eventProductToken_);
HepMC::GenEvent* evt = new HepMC::GenEvent();
HepMC::GenVertex* v = new HepMC::GenVertex();
evt->add_vertex(v);
if (_lheRunSrc) {
HepMC::FourVector beam1(0, 0, _lheRunSrc->heprup().EBMUP.first, _lheRunSrc->heprup().EBMUP.first);
HepMC::GenParticle* gp1 = new HepMC::GenParticle(beam1, _lheRunSrc->heprup().IDBMUP.first, 4);
v->add_particle_in(gp1);
HepMC::FourVector beam2(0, 0, _lheRunSrc->heprup().EBMUP.second, _lheRunSrc->heprup().EBMUP.second);
HepMC::GenParticle* gp2 = new HepMC::GenParticle(beam2, _lheRunSrc->heprup().IDBMUP.second, 4);
v->add_particle_in(gp2);
evt->set_beam_particles(gp1, gp2);
} else {
LogWarning("LHE2HepMCConverter") << "Could not retrieve the LHERunInfoProduct for this event. You'll miss the beam "
"particles in your HepMC product.";
}
for (int i = 0; i < lheEventSrc->hepeup().NUP; ++i) {
if (lheEventSrc->hepeup().ISTUP[i] != 1) {
//cout << reader->hepeup.ISTUP[i] << ", " << reader->hepeup.IDUP[i] << endl;
continue;
}
HepMC::FourVector p(lheEventSrc->hepeup().PUP[i][0],
lheEventSrc->hepeup().PUP[i][1],
lheEventSrc->hepeup().PUP[i][2],
lheEventSrc->hepeup().PUP[i][3]);
HepMC::GenParticle* gp = new HepMC::GenParticle(p, lheEventSrc->hepeup().IDUP[i], 1);
gp->set_generated_mass(lheEventSrc->hepeup().PUP[i][4]);
v->add_particle_out(gp);
}
std::unique_ptr<HepMCProduct> pOut(new HepMCProduct(evt));
iEvent.put(std::move(pOut), "unsmeared");
}
// ------------ method called when starting to processes a run ------------
void LHE2HepMCConverter::beginRun(edm::Run const& iRun, edm::EventSetup const&) {
edm::Handle<LHERunInfoProduct> lheRunSrcHandle = iRun.getHandle(runInfoProductToken_);
if (lheRunSrcHandle.isValid()) {
_lheRunSrc = lheRunSrcHandle.product();
} else {
if (_lheRunSrcTag.label() != "source") {
iRun.getByLabel("source", lheRunSrcHandle);
if (lheRunSrcHandle.isValid()) {
_lheRunSrc = lheRunSrcHandle.product();
edm::LogInfo("LHE2HepMCConverter") << "Taking LHERunInfoproduct from source";
} else
edm::LogWarning("LHE2HepMCConverter") << "No LHERunInfoProduct from source";
}
}
}
// ------------ method fills 'descriptions' with the allowed parameters for the module ------------
void LHE2HepMCConverter::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
//The following says we do not know what parameters are allowed so do no validation
// Please change this to state exactly what you do use, even if it is no parameters
edm::ParameterSetDescription desc;
desc.setUnknown();
descriptions.addDefault(desc);
}
//define this as a plug-in
DEFINE_FWK_MODULE(LHE2HepMCConverter);
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