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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Device/Beam/FootprintGauss.h
//! @brief Defines class FootprintGauss.
//!
//! @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_DEVICE_BEAM_FOOTPRINTGAUSS_H
#define BORNAGAIN_DEVICE_BEAM_FOOTPRINTGAUSS_H
#include "Device/Beam/IFootprint.h"
//! Gaussian beam footprint.
//!
//! Beam width is the full width at half maximum.
class FootprintGauss : public IFootprint {
public:
FootprintGauss(std::vector<double> P);
FootprintGauss(double width_ratio);
#ifndef SWIG
FootprintGauss* clone() const override;
#endif // SWIG
std::string className() const final { return "FootprintGauss"; }
//! Calculate footprint correction coefficient from the beam incident angle _alpha_.
double calculate(double alpha) const override;
};
#endif // BORNAGAIN_DEVICE_BEAM_FOOTPRINTGAUSS_H
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