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// $Id: G4hMultipleScattering.cc,v 1.7 2007/12/07 17:35:52 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
//
// -----------------------------------------------------------------------------
//
// GEANT4 Class file
//
// File name:     G4hMultipleScattering
//
// Author:        Laszlo Urban
//
// Creation date: 24.10.2006 cloned from G4MultipleScattering
// 
// Modified:
// 12-02-07 skin can be changed via UI command (VI)
// 20.03.07 Remove local parameter skin, set facgeom=0.1(V.Ivanchenko) 
//
// -----------------------------------------------------------------------------
//
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#include "G4hMultipleScattering.hh"
#include "G4UrbanMscModel.hh"
#include "G4UrbanMscModel90.hh"
#include "G4MscStepLimitType.hh"

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using namespace std;

G4hMultipleScattering::G4hMultipleScattering(const G4String& processName)
  : G4VMultipleScattering(processName)
{
  dtrl              = 0.05;
  lambdalimit       = 1.*mm;
  
  samplez           = false ; 
  isInitialized     = false;  

  SetLateralDisplasmentFlag(true);
  SetSkin(0.0);
  SetRangeFactor(0.2);
  SetGeomFactor(0.1);
  SetStepLimitType(fMinimal);
}

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G4hMultipleScattering::~G4hMultipleScattering()
{}

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G4bool G4hMultipleScattering::IsApplicable (const G4ParticleDefinition& p)
{
  return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
}

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void G4hMultipleScattering::InitialiseProcess(const G4ParticleDefinition* p)
{
  // Modification of parameters between runs
  if(isInitialized) {
    if (p->GetParticleType() != "nucleus") {
      mscUrban->SetStepLimitType(StepLimitType());
      mscUrban->SetLateralDisplasmentFlag(LateralDisplasmentFlag());
      mscUrban->SetSkin(Skin());
      mscUrban->SetRangeFactor(RangeFactor());
      mscUrban->SetGeomFactor(GeomFactor());
    }
    return;
  }

  // initialisation of parameters
  G4String part_name = p->GetParticleName();
  mscUrban = new G4UrbanMscModel90(RangeFactor(),dtrl,lambdalimit,
                                 GeomFactor(),Skin(),
                                 samplez,StepLimitType());
  mscUrban->SetLateralDisplasmentFlag(LateralDisplasmentFlag());

  if (p->GetParticleType() == "nucleus") {
    mscUrban->SetStepLimitType(fMinimal);
    SetLateralDisplasmentFlag(false);
    SetBuildLambdaTable(false);
    SetSkin(0.0);
    SetRangeFactor(0.2);
  }
  AddEmModel(1,mscUrban);
  isInitialized = true;
}

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void G4hMultipleScattering::PrintInfo()
{
  G4cout << "      Boundary/stepping algorithm is active with RangeFactor= "
	 << RangeFactor()
	 << "  Step limit type " << StepLimitType()
	 << G4endl;
}

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