Sprout/sprout/math/quaternion/spherical.hpp
2016-02-27 01:21:46 +09:00

46 lines
1.6 KiB
C++

/*=============================================================================
Copyright (c) 2011-2016 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_MATH_QUATERNION_SPHERICAL_HPP
#define SPROUT_MATH_QUATERNION_SPHERICAL_HPP
#include <sprout/config.hpp>
#include <sprout/math/cos.hpp>
#include <sprout/math/sin.hpp>
#include <sprout/math/quaternion/quaternion.hpp>
namespace sprout {
namespace math {
//
// spherical
//
namespace detail {
template<typename T>
inline SPROUT_CONSTEXPR sprout::math::quaternion<T>
spherical_impl(T const& rho, T const& theta, T const& phi1, T const& phi2, T const& p1, T const& p2) {
return rho * sprout::math::quaternion<T>(
sprout::math::cos(theta) * (p2 * p1),
sprout::math::sin(theta) * (p2 * p1),
sprout::math::sin(phi1) * p2,
sprout::math::sin(phi2)
);
}
} // namespace detail
template<typename T>
inline SPROUT_CONSTEXPR sprout::math::quaternion<T>
spherical(T const& rho, T const& theta, T const& phi1, T const& phi2) {
return sprout::math::detail::spherical_impl(
rho, theta, phi1, phi2,
sprout::math::cos(phi1), sprout::math::cos(phi2)
);
}
} // namespace math
using sprout::math::spherical;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_QUATERNION_SPHERICAL_HPP