IShape.h

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// ************************************************************************** //
//
//  BornAgain: simulate and fit scattering at grazing incidence
//
//! @file      Sample/Shapes/IShape.h
//! @brief     Defines interface IShape.
//!
//! @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_SHAPES_ISHAPE_H
#define BORNAGAIN_CORE_SHAPES_ISHAPE_H
 
#include "Base/Vector/Vectors3D.h"
#include <vector>
 
//! Pure virtual base class for different shapes.
//!
//! In contrast to the form factors, these shapes only provide an intereface
//! for returning a set of vertices.
 
//! @ingroup shapes_internal
 
class IShape
{
public:
    IShape() {}
    virtual ~IShape() {}
 
    //! Retrieves a list of the vertices constituting this concrete shape
    virtual std::vector<kvector_t> vertices() const;
    static const size_t N_Circle;
 
protected:
    //! List of vertices initialized during construction
    std::vector<kvector_t> m_vertices;
};
 
//! Helper functions to construct lists of vertices
//!
//! Generate vertices of centered rectangle at height z
std::vector<kvector_t> RectangleVertices(double length, double width, double z);
 
//! Generate vertices of centered ellipse with given semi-axes at height z
std::vector<kvector_t> EllipseVertices(double r_x, double r_y, double z);
 
#endif // BORNAGAIN_CORE_SHAPES_ISHAPE_H