FormFactorHemiEllipsoid.h

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// ************************************************************************** //
//
//  BornAgain: simulate and fit scattering at grazing incidence
//
//! @file      Sample/HardParticle/FormFactorHemiEllipsoid.h
//! @brief     Defines class FormFactorHemiEllipsoid.
//!
//! @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_HARDPARTICLE_FORMFACTORHEMIELLIPSOID_H
#define BORNAGAIN_CORE_HARDPARTICLE_FORMFACTORHEMIELLIPSOID_H
 
#include "Sample/Scattering/IFormFactorBorn.h"
 
//! An hemi ellipsoid,
//!   obtained by truncating a full ellipsoid in the middle plane spanned by two principal axes.
//! @ingroup hardParticle
 
class FormFactorHemiEllipsoid : public IFormFactorBorn
{
public:
    FormFactorHemiEllipsoid(const std::vector<double> P);
    FormFactorHemiEllipsoid(double radius_x, double radius_y, double height);
    virtual ~FormFactorHemiEllipsoid() {}
 
    FormFactorHemiEllipsoid* clone() const override final
    {
        return new FormFactorHemiEllipsoid(m_radius_x, m_radius_y, m_height);
    }
    void accept(INodeVisitor* visitor) const override final { visitor->visit(this); }
 
    double getHeight() const { return m_height; }
    double getRadiusX() const { return m_radius_x; }
    double getRadiusY() const { return m_radius_y; }
 
    double radialExtension() const override final;
 
    complex_t evaluate_for_q(cvector_t q) const override final;
 
protected:
    void onChange() override final;
 
private:
    complex_t Integrand(double Z) const;
 
    const double& m_radius_x;
    const double& m_radius_y;
    const double& m_height;
    mutable cvector_t m_q;
};
 
#endif // BORNAGAIN_CORE_HARDPARTICLE_FORMFACTORHEMIELLIPSOID_H