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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Sample/Material/MaterialFactoryFuncs.cpp
//! @brief Factory functions used to create material instances.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "Base/Const/Units.h"
#include "Sample/Material/MaterialBySLDImpl.h"
#include "Sample/Material/MaterialUtil.h"
#include "Sample/Material/RefractiveMaterialImpl.h"
Material RefractiveMaterial(const std::string& name, complex_t refractive_index,
const R3& magnetization)
{
const double delta = 1.0 - refractive_index.real();
const double beta = refractive_index.imag();
return RefractiveMaterial(name, delta, beta, magnetization);
}
Material RefractiveMaterial(const std::string& name, double delta, double beta,
const R3& magnetization)
{
std::unique_ptr<RefractiveMaterialImpl> mat_impl(
new RefractiveMaterialImpl(name, delta, beta, magnetization));
return {std::move(mat_impl)};
}
Material Vacuum()
{
return RefractiveMaterial("vacuum", 0.0, 0.0, R3{});
}
// accepts SLD in AA^-2
Material MaterialBySLD(const std::string& name, double sld_real, double sld_imag,
const R3& magnetization)
{
constexpr double inv_sq_angstroms = 1.0 / (Units::angstrom * Units::angstrom);
std::unique_ptr<MaterialBySLDImpl> mat_impl(new MaterialBySLDImpl(
name, sld_real * inv_sq_angstroms, sld_imag * inv_sq_angstroms, magnetization));
return {std::move(mat_impl)};
}
Material MaterialBySLD()
{
return MaterialBySLD("vacuum", 0.0, 0.0, R3{});
}
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