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/***************************************************************************************
* This file is dedicated to the public domain. It is a minor modification of the *
* simple yet effective PIMPL article here: *
* *
* https://cpppatterns.com/patterns/pimpl.html *
* *
* If your jurisdiction requires a specific license: *
* *
* Copyright (c) Joseph Mansfield, Mehdi Amini, 2017 *
* License: CC0 1.0 Universal *
* License Text: https://creativecommons.org/publicdomain/zero/1.0/legalcode *
**************************************************************************************/
/** \file */
#pragma once
#include <pimpl/planet.hpp>
#include <memory>
namespace pimpl {
/**
* \class pimpl::EarthImpl earth.hpp include/pimpl/earth.hpp
* \brief The Earth PIMPL.
*/
class EarthImpl;
/// A class that represents the planet Earth.
class Earth : public Planet {
public:
Earth(); ///< Constructs an Earth.
~Earth(); ///< Destructs an Earth.
Earth(Earth&&); ///< Moves an Earth.
Earth& operator=(Earth&&);///< Assigns an Earth.
/// The mass of the Earth in kilograms.
double mass() const;
/// The mean radius of the Earth in kilometers.
double radius() const;
/// The orbital eccentricity of the Earth.
double eccentricity() const;
/// The gravity on the Earth surface in meters per second squared.
double surface_gravity() const;
/// A string description of the planet.
std::string describe() const { return "Earth"; }
protected:
/// The Earth implementation details.
std::unique_ptr<EarthImpl> pimpl;
};
/// The ``detail`` namespace contains items that should not be relied on in the public API.
namespace detail {
/**
* \class pimpl::detail::EarthImpl earth.hpp include/pimpl/earth.hpp
* \brief The Earth_v2 PIMPL.
*/
class EarthImpl;
}
/// A class that represents the planet Earth_v2.
class Earth_v2 : public Planet {
public:
Earth_v2(); ///< Constructs an Earth_v2.
~Earth_v2(); ///< Destructs an Earth_v2.
Earth_v2(Earth_v2&&); ///< Moves an Earth_v2.
Earth_v2& operator=(Earth_v2&&);///< Assigns an Earth_v2.
/// The mass of the Earth_v2 in kilograms.
double mass() const;
/// The mean radius of the Earth_v2 in kilometers.
double radius() const;
/// The orbital eccentricity of the Earth_v2.
double eccentricity() const;
/// The gravity on the Earth_v2 surface in meters per second squared.
double surface_gravity() const;
/// A string description of the planet.
std::string describe() const { return "Earth_v2"; }
protected:
/// The Earth_v2 implementation details.
std::unique_ptr<detail::EarthImpl> pimpl;
};
}
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