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// Geant4 class : G4LowEHadronElastic
//
// Author : V.Ivanchenko 10 May 2019
//  
//

#include "G4LowEHadronElastic.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"
#include "Randomize.hh"
#include "G4ios.hh"

G4LowEHadronElastic::G4LowEHadronElastic():G4HadronElastic("hLowEElastic")
{
  plabLowLimit  = 400*CLHEP::MeV;
  plabHighLimit = 2000*CLHEP::MeV;
}

G4LowEHadronElastic::~G4LowEHadronElastic()
{}

G4double 
G4LowEHadronElastic::SampleInvariantT(const G4ParticleDefinition* p, 
				      G4double plab, G4int Z, G4int A)
{
  return (IsResonanseScattering(p, plab, Z, A)) 
    ? G4UniformRand()*pLocalTmax 
    : G4HadronElastic::SampleInvariantT(p, plab, Z, A);
}

G4bool
G4LowEHadronElastic::IsResonanseScattering(const G4ParticleDefinition*, 
				           G4double plab, 
                                           G4int, G4int)
{
  return (plab < plabHighLimit);
}