G4InuclParticle.cc

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// $Id$
//
// 20100409  M. Kelsey -- Drop unused string argument from ctors.
// 20110721  M. Kelsey -- Add model ID as optional ctor argument (so subclasses
//              don't have to call SetModel()).
// 20110922  M. Kelsey -- Add stream argument to printParticle() => print()

#include <cmath>

#include "G4InuclParticle.hh"
#include "G4ios.hh"
#include "G4SystemOfUnits.hh"

// Internal constructor only usable by subclasses
G4InuclParticle::G4InuclParticle(G4ParticleDefinition* pd,
                                 const G4LorentzVector& mom,
                                 G4InuclParticle::Model model)
  : modelId(model) {
  setDefinition(pd);
  setMomentum(mom);
}


// Assignment operator for use with std::sort()
G4InuclParticle& G4InuclParticle::operator=(const G4InuclParticle& right) {
  pDP = right.pDP;
  modelId = right.modelId;

  return *this;
}


// Set particle definition allowing for null pointer to erase DynPart content
void G4InuclParticle::setDefinition(G4ParticleDefinition* pd) {
  if (pd) pDP.SetDefinition(pd);
  else {
    static const G4DynamicParticle empty;       // To zero out everything
    pDP = empty;
  }
}


// WARNING!  Bertini code doesn't do four-vectors; repair mass before use!
void G4InuclParticle::setMomentum(const G4LorentzVector& mom) {
  G4double mass = getMass();
  if (std::fabs(mass-mom.m()) <= 1e-5) 
    pDP.Set4Momentum(mom*GeV/MeV);              // From Bertini to G4 units
  else
    pDP.SetMomentum(mom.vect()*GeV/MeV);        // Don't change current mass!
}


// Proper stream output (just calls print())

std::ostream& operator<<(std::ostream& os, const G4InuclParticle& part) {
  part.print(os);
  return os;
}

void G4InuclParticle::print(std::ostream& os) const {
  G4LorentzVector mom = getMomentum();
  os << " px " << mom.px() << " py " << mom.py() << " pz " << mom.pz()
     << " pmod " << mom.rho() << " E " << mom.e()
     << " creator model " << modelId;
}

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