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//
// -------------------------------------------------------------
//      GEANT 4 class 
//
//      ---------- Test30VSecondaryGenerator -------
//                by Vladimir Ivanchenko, 12 March 2002 
// 
//    Modified:
//
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#include "Test30VSecondaryGenerator.hh"
#include "G4SystemOfUnits.hh"
#include "G4Track.hh"
#include "G4ParticleTable.hh"
#include "G4IonTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4HadronicInteraction.hh"
#include "G4ElementVector.hh"
#include "G4Material.hh"
#include "G4NucleiProperties.hh"

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Test30VSecondaryGenerator::Test30VSecondaryGenerator(
    G4HadronicInteraction* hadi, const G4Material* mat):
  hInteraction(hadi),
  material(mat),
  targetA(0)
{
  elm = material->GetElement(0);
  targetZ = G4lrint(elm->GetZ());
  G4cout << "New generator for material " << material->GetName() 
	 << " Nelm= " <<  material->GetNumberOfElements() 
	 << " Nmat= " <<  material->GetNumberOfMaterials() 
	 << " Target element: " << elm->GetName() 
	 << G4endl;
  generatorName = "";
}

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Test30VSecondaryGenerator::~Test30VSecondaryGenerator()
{}

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void Test30VSecondaryGenerator::SetA(G4int A) 
{
  targetA = A;
  G4cout << "Nucleus with A= " << targetA << "  Z= " << targetZ 
	 << "  A(amu)= " << elm->GetN();
  if(targetA < targetZ) {
    targetA = 0; 
    G4cout << "  Natural abundances"; 
  } else {
    G4double mass = G4NucleiProperties::GetNuclearMass(targetA, targetZ);
    G4cout << "Mass from G4NucleiProperties(GeV)= " << mass/GeV << G4endl;
  }
  G4cout << G4endl;
}

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G4double Test30VSecondaryGenerator::GetMass()
{
  G4int A = targetA;
  if(0 == targetA) {
    A = G4lrint(elm->GetAtomicMassAmu());
    G4IsotopeVector* isoVector = elm->GetIsotopeVector();
    G4int nIsoPerElement = elm->GetNumberOfIsotopes();
    A = (*isoVector)[0]->GetN();
    if(nIsoPerElement > 1) {
      G4double* abundVector = elm->GetRelativeAbundanceVector();
      G4double y = G4UniformRand();
      for(G4int j=0; j<nIsoPerElement; ++j) {
	y -= abundVector[j];
	if(y <= 0.0) {
	  A = (*isoVector)[j]->GetN();
	  break;
	}
      }
    }
  }
  targetNucleus.SetParameters(A, targetZ);
  G4double mass = G4NucleiProperties::GetNuclearMass(A, targetZ);
  return mass;
}

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G4HadFinalState* Test30VSecondaryGenerator::Secondaries(const G4Track& track)
{
  G4HadFinalState *result1 = 0;
  G4HadProjectile thePro(track);
  if (hInteraction) {

    result1 = hInteraction->ApplyYourself(thePro, targetNucleus);
    result1->SetTrafoToLab(thePro.GetTrafoToLab());
    }
    return result1;
}

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