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// ************************************************************************************************
//
// libformfactor: efficient and accurate computation of scattering form factors
//
//! @file ff/IBody.h
//! @brief Defines abstract base class IBody.
//!
//! @homepage https://jugit.fz-juelich.de/mlz/libformfactor
//! @license GNU General Public License v3 or higher (see LICENSE)
//! @copyright Forschungszentrum Jülich GmbH 2022
//! @author Joachim Wuttke, Scientific Computing Group at MLZ (see CITATION)
//
// ************************************************************************************************
#ifndef FORMFACTOR_FF_IBODY_H
#define FORMFACTOR_FF_IBODY_H
#include <heinz/Complex.h>
#include <heinz/Vectors3D.h>
#include <vector>
namespace ff {
class Topology;
//! This interface class is the base for all body shape classes
class IBody {
public:
IBody(const R3& location) : m_location(location) {}
virtual ~IBody() = default;
//! Since data members are const, there is no good reason to copy.
IBody(const IBody&) = delete;
void move(const R3& location) { m_location += location; }
virtual double volume() const = 0;
virtual double radius() const = 0; //!< radius of enclosing sphere
R3 location() const { return m_location; } //!< position of center of mass
virtual const std::vector<R3>& vertices() const = 0; //!< in absolute coordinates
virtual double z_bottom() const = 0; //!< vertical distance between bottom and center
virtual R3 center_of_mass() const = 0;
complex_t formfactor(const C3& q) const;
virtual complex_t formfactor_at_center(const C3& q) const = 0;
//! Returns whether a point p is located inside of the body.
// virtual bool is_inside(const R3& p, int nsamples = 2) const;
private:
R3 m_location;
};
} // namespace ff
#endif // FORMFACTOR_FF_IBODY_H
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