hepmc_rootio.cc

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#include <HepMC/GenParticle.h>
#include <HepMC/GenVertex.h>
#include <iostream>

//HACK We need to change the internals of GenVertex when reading
// back via ROOT. We use the private access of GenEvent to 
// accomplish it.
namespace HepMC {
  class GenEvent {
  public:
    static void clear_particles_in(HepMC::GenVertex* iVertex) {
      iVertex->m_particles_in.clear();
    }
    static void add_to_particles_in(HepMC::GenVertex* iVertex, HepMC::GenParticle* iPart) {
      iVertex->m_particles_in.push_back(iPart);
    }
  };
}


namespace hepmc_rootio {                                                                                                                
  void add_to_particles_in(HepMC::GenVertex* iVertex, HepMC::GenParticle* iPart) {
    HepMC::GenEvent::add_to_particles_in(iVertex, iPart);
  }
}