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#ifndef GeneratorInterface_LHEInterface_LHEEvent_h
#define GeneratorInterface_LHEInterface_LHEEvent_h
#include <iostream>
#include <utility>
#include <memory>
#include <vector>
#include <string>
#include "HepMC/GenEvent.h"
#include "HepMC/GenVertex.h"
#include "HepMC/PdfInfo.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "SimDataFormats/GeneratorProducts/interface/LesHouches.h"
#include "SimDataFormats/GeneratorProducts/interface/LHEEventProduct.h"
#include "GeneratorInterface/LHEInterface/interface/LHERunInfo.h"
namespace lhef {
class LHEEvent {
public:
LHEEvent(const std::shared_ptr<LHERunInfo> &runInfo, std::istream &in);
LHEEvent(const std::shared_ptr<LHERunInfo> &runInfo, const HEPEUP &hepeup);
LHEEvent(const std::shared_ptr<LHERunInfo> &runInfo,
const HEPEUP &hepeup,
const LHEEventProduct::PDF *pdf,
const std::vector<std::string> &comments);
LHEEvent(const std::shared_ptr<LHERunInfo> &runInfo, const LHEEventProduct &product);
~LHEEvent();
typedef LHEEventProduct::PDF PDF;
typedef LHEEventProduct::WGT WGT;
const std::shared_ptr<LHERunInfo> &getRunInfo() const { return runInfo; }
const HEPEUP *getHEPEUP() const { return &hepeup; }
const HEPRUP *getHEPRUP() const { return runInfo->getHEPRUP(); }
const PDF *getPDF() const { return pdf.get(); }
const std::vector<std::string> &getComments() const { return comments; }
const int getReadAttempts() { return readAttemptCounter; }
void addWeight(const WGT &wgt) { weights_.push_back(wgt); }
void setPDF(std::unique_ptr<PDF> pdf) { this->pdf = std::move(pdf); }
double originalXWGTUP() const { return originalXWGTUP_; }
const std::vector<WGT> &weights() const { return weights_; }
const std::vector<float> &scales() const { return scales_; }
void setScales(const std::vector<float> &scales) { scales_ = scales; }
int npLO() const { return npLO_; }
int npNLO() const { return npNLO_; }
int evtnum() const { return evtnum_; }
void setNpLO(int n) { npLO_ = n; }
void setNpNLO(int n) { npNLO_ = n; }
void setEvtNum(int n) { evtnum_ = n; }
void addComment(const std::string &line) { comments.push_back(line); }
static void removeParticle(lhef::HEPEUP &hepeup, int index);
void removeResonances(const std::vector<int> &ids);
void count(LHERunInfo::CountMode count, double weight = 1.0, double matchWeight = 1.0);
void attempted() {
readAttemptCounter++;
return;
}
void fillPdfInfo(HepMC::PdfInfo *info) const;
void fillEventInfo(HepMC::GenEvent *hepmc) const;
std::unique_ptr<HepMC::GenEvent> asHepMCEvent() const;
static const HepMC::GenVertex *findSignalVertex(const HepMC::GenEvent *event, bool status3 = true);
static void fixHepMCEventTimeOrdering(HepMC::GenEvent *event);
private:
static bool checkHepMCTree(const HepMC::GenEvent *event);
HepMC::GenParticle *makeHepMCParticle(unsigned int i) const;
const std::shared_ptr<LHERunInfo> runInfo;
HEPEUP hepeup;
std::unique_ptr<PDF> pdf;
std::vector<WGT> weights_;
std::vector<std::string> comments;
bool counted;
int readAttemptCounter;
double originalXWGTUP_;
std::vector<float> scales_; //scale value used to exclude EWK-produced partons from matching
int npLO_; //number of partons for LO process (used to steer matching/merging)
int npNLO_; //number of partons for NLO process (used to steer matching/merging)
int evtnum_; //The number of the event (needed to ensure the correct LHE events are saved for MG +Herwig)
};
} // namespace lhef
#endif // GeneratorEvent_LHEInterface_LHEEvent_h
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