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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Sample/Aggregate/InterferenceRadialParacrystal.h
//! @brief Defines class InterferenceRadialParacrystal.
//!
//! @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_SAMPLE_AGGREGATE_INTERFERENCERADIALPARACRYSTAL_H
#define BORNAGAIN_SAMPLE_AGGREGATE_INTERFERENCERADIALPARACRYSTAL_H
#include "Sample/Aggregate/IInterference.h"
#include "Sample/Correlation/Profiles1D.h"
#include <heinz/Complex.h>
#include <memory>
//! Interference function of radial paracrystal.
class InterferenceRadialParacrystal : public IInterference {
public:
InterferenceRadialParacrystal(double peak_distance, double damping_length);
#ifndef SWIG
InterferenceRadialParacrystal* clone() const override;
std::vector<const INode*> nodeChildren() const override;
#endif // SWIG
std::string className() const final { return "InterferenceRadialParacrystal"; }
std::vector<ParaMeta> parDefs() const final
{
return {{"PeakDistance", "nm"}, {"DampingLength", "nm"}};
}
void setKappa(double kappa);
double kappa() const { return m_kappa; }
void setDomainSize(double size);
double domainSize() const { return m_domain_size; }
complex_t FTPDF(double qpar) const;
void setProbabilityDistribution(const IProfile1D& pdf);
double peakDistance() const { return m_peak_distance; }
double dampingLength() const { return m_damping_length; }
double randomSample(int seed) const { return m_pdf->createSampler()->randomSample(seed); }
std::string validate() const override;
private:
double iff_without_dw(const R3& q) const override;
void init_parameters();
double m_peak_distance; //!< the distance to the first neighbor peak
double m_damping_length; //!< damping length of paracrystal
//! Fourier transformed probability distribution of the nearest particle
std::unique_ptr<IProfile1D> m_pdf;
double m_kappa; //!< Size-spacing coupling parameter
double m_domain_size; //!< Size of coherence domain
};
#endif // BORNAGAIN_SAMPLE_AGGREGATE_INTERFERENCERADIALPARACRYSTAL_H
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