10#include "Pythia8/Pythia.h" 
   11#ifdef HEPMC3_USE_INTERFACE_FROM_PYTHIA8 
   12#include "Pythia8Plugins/HepMC3.h" 
   14#include "Pythia8ToHepMC3.h" 
   20int main(
int argc, 
char **argv) {
 
   22        std::cout << 
"Usage: " << argv[0] << 
" <pythia_config_file> <output_hepmc3_file>" << std::endl;
 
   26    Pythia8::Pythia pythia;
 
   27    Pythia8ToHepMC3 pythiaToHepMC;
 
   28    pythia.readFile(argv[1]);
 
   30    std::shared_ptr<GenRunInfo> run = std::make_shared<GenRunInfo>();
 
   31    struct GenRunInfo::ToolInfo generator={std::string(
"Pythia8"),std::to_string(PYTHIA_VERSION).substr(0,5),std::string(
"Used generator")};
 
   32    run->tools().push_back(generator);
 
   34    run->tools().push_back(config);
 
   35    std::vector<std::string> names;
 
   36    for (
int iWeight=0; iWeight < pythia.info.nWeights(); ++iWeight) {
 
   37     std::string s=pythia.info.weightLabel(iWeight);
 
   38     if (!s.length()) s=std::to_string((
long long int)iWeight);
 
   41    if (names.empty()) names.emplace_back(
"default");
 
   42    run->set_weight_names(names);
 
   45    int nEvent = pythia.mode(
"Main:numberOfEvents");
 
   47    for( 
int i = 0; i< nEvent; ++i ) {
 
   48        if( !pythia.next() ) 
continue;
 
   50        GenEvent hepmc( Units::GEV, Units::MM );
 
   52        pythiaToHepMC.fill_next_event(pythia.event, &hepmc, -1, &pythia.info);
 
   55            std::cout << 
"First event: " << std::endl;
 
   59        file.write_event(hepmc);
 
Definition of class GenEvent.
Definition of static class Print.
Definition of class WriterAscii.
Stores event-related information.
static void listing(std::ostream &os, const GenEvent &event, unsigned short precision=2)
Print event in listing (HepMC2) format.
GenEvent I/O serialization for structured text files.