FormFactorHollowSphere.h

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// ************************************************************************** //
//
//  BornAgain: simulate and fit scattering at grazing incidence
//
//! @file      Sample/HardParticle/FormFactorHollowSphere.h
//! @brief     Defines class FormFactorHollowSphere.
//!
//! @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_FORMFACTORHOLLOWSPHERE_H
#define BORNAGAIN_CORE_HARDPARTICLE_FORMFACTORHOLLOWSPHERE_H
 
#include "Sample/HardParticle/FormFactorFullSphere.h"
 
//! Integrated full sphere form factor over a uniform distribution of radii.
//! @ingroup softParticle
 
class FormFactorHollowSphere : public IFormFactorBorn
{
public:
    FormFactorHollowSphere(const std::vector<double> P);
    FormFactorHollowSphere(double mean, double full_width);
 
    FormFactorHollowSphere* clone() const override final
    {
        return new FormFactorHollowSphere(m_mean, m_full_width);
    }
    void accept(INodeVisitor* visitor) const override final { visitor->visit(this); }
 
    double radialExtension() const override final { return m_mean; }
 
    complex_t evaluate_for_q(cvector_t q) const override final;
 
protected:
    void onChange() override final;
 
private:
    bool checkParameters() const;
    const double& m_mean;       //!< This is the mean radius
    const double& m_full_width; //!< This is the full width of the radius distribution
};
 
#endif // BORNAGAIN_CORE_HARDPARTICLE_FORMFACTORHOLLOWSPHERE_H