Gauss.h

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      Sample/SoftParticle/Gauss.h
//! @brief     Defines class GaussSphere.
//!
//! @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_SOFTPARTICLE_GAUSS_H
#define BORNAGAIN_SAMPLE_SOFTPARTICLE_GAUSS_H
 
#include "Sample/Particle/IFormFactor.h"
 
//! The form factor of a Gaussian sphere.
//! @ingroup softParticle
 
class GaussSphere : public IFormFactor {
public:
    GaussSphere(std::vector<double> P);
    GaussSphere(double mean_radius);
 
    GaussSphere* clone() const override { return new GaussSphere(m_mean_radius); }
    std::string className() const final { return "GaussSphere"; }
    // const auto tooltip = "class_tooltip";
    std::vector<ParaMeta> parDefs() const final
    {
        return {{"MeanRadius", "nm", "para_tooltip", 0, +INF, 0}};
    }
 
    double meanRadius() const { return m_mean_radius; }
 
    double radialExtension() const override { return m_mean_radius; }
 
    complex_t formfactor_at_bottom(C3 q) const override;
 
private:
    const double& m_mean_radius;
    void initialize();
};
 
#endif // BORNAGAIN_SAMPLE_SOFTPARTICLE_GAUSS_H