Circ.h

/*
 * Gamedev Framework (gf)
 * Copyright (C) 2016-2019 Julien Bernard
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 * Part of this file comes from SFML, with the same license:
 * Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
 */
#ifndef GF_CIRC_H
#define GF_CIRC_H

#include "Ball.h"
#include "Portability.h"
#include "Vector.h"
#include "VectorOps.h"

namespace gf {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
inline namespace v1 {
#endif

  template<typename T>
  struct Circ : Ball<T, 2> {
    constexpr Circ() noexcept
    : Ball<T, 2>()
    {
    }

    constexpr Circ(const Vector<T, 2>& circCenter, T circRadius) noexcept
    : Ball<T, 2>(circCenter, circRadius)
    {
    }

    constexpr Vector<T, 2> getTop() const noexcept {
      return this->center - gf::diry(this->radius);
    }

    constexpr Vector<T, 2> getBottom() const noexcept {
      return this->center + gf::diry(this->radius);
    }

    constexpr Vector<T, 2> getLeft() const noexcept {
      return this->center - gf::dirx(this->radius);
    }

    constexpr Vector<T, 2> getRight() const noexcept {
      return this->center + gf::dirx(this->radius);
    }

  };


  using CircF = Circ<float>;

  using CircD = Circ<double>;

  using CircI = Circ<int>;

  using CircU = Circ<unsigned>;

  using CircZ = Circ<std::size_t>;

// MSVC does not like extern template
#ifndef _MSC_VER
  extern template struct GF_API Circ<float>;
  extern template struct GF_API Circ<double>;
  extern template struct GF_API Circ<int>;
  extern template struct GF_API Circ<unsigned>;
#endif

  template<typename T>
  inline
  bool operator==(const Circ<T>& lhs, const Circ<T>& rhs) {
    return lhs.center == rhs.center && lhs.radius == rhs.radius;
  }

  template<typename T>
  inline
  bool operator!=(const Circ<T>& lhs, const Circ<T>& rhs) {
    return lhs.center != rhs.center || lhs.radius != rhs.radius;
  }

  template<typename Archive, typename T>
  Archive& operator|(Archive& ar, Circ<T>& circ) {
    return ar | circ.center | circ.radius;
  }

#ifndef DOXYGEN_SHOULD_SKIP_THIS
}
#endif
}


#endif // GF_CIRC_H