MaterialUtils.h

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// ************************************************************************** //
//
//  BornAgain: simulate and fit scattering at grazing incidence
//
//! @file      Sample/Material/MaterialUtils.h
//! @brief     Declares functions in namespace MaterialUtils
//!
//! @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)
//
// ************************************************************************** //
 
#ifndef BORNAGAIN_CORE_MATERIAL_MATERIALUTILS_H
#define BORNAGAIN_CORE_MATERIAL_MATERIALUTILS_H
 
#include "Sample/Material/Material.h"
 
//! A number of materials-related helper functions for internal use
//! @ingroup materials
 
namespace MaterialUtils
{
 
//! Function for calculating the reduced potential, used for obtaining the Fresnel coefficients
//! (non-polarized material case)
 
complex_t ScalarReducedPotential(complex_t n, kvector_t k, double n_ref);
 
//! Function for calculating the reduced potential, used for obtaining the Fresnel coefficients
//! (polarized material case)
 
Eigen::Matrix2cd PolarizedReducedPotential(complex_t n, kvector_t b_field, kvector_t k,
                                           double n_ref);
 
// Utility to compute magnetization correction for reduced potential and scattering length density.
// Used with T = double, complex_t.
 
template <typename T>
Eigen::Matrix2cd MagnetizationCorrection(complex_t unit_factor, double magnetic_factor,
                                         BasicVector3D<T> polarization);
 
//! Checks if all non-default materials in _materials_ are of the same type and returns this type.
//! If several types of materials are involved, InvalidMaterialType identifier is returned.
 
MATERIAL_TYPES checkMaterialTypes(const std::vector<const Material*>& materials);
 
} // namespace MaterialUtils
 
#endif // BORNAGAIN_CORE_MATERIAL_MATERIALUTILS_H