#ifndef BOOST_QVM_QUAT_ACCESS_HPP_INCLUDED #define BOOST_QVM_QUAT_ACCESS_HPP_INCLUDED /// Copyright (c) 2008-2021 Emil Dotchevski and Reverge Studios, Inc. /// 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) #include <boost/qvm/inline.hpp> #include <boost/qvm/quat_traits.hpp> #include <boost/qvm/deduce_vec.hpp> #include <boost/qvm/static_assert.hpp> #include <boost/qvm/enable_if.hpp> namespace boost { namespace qvm { namespace qvm_detail { template <class Q> struct quat_v_ { template <class R> operator R() const { R r; assign(r,*this); return r; } private: quat_v_( quat_v_ const & ); quat_v_ const & operator=( quat_v_ const & ); ~quat_v_(); }; } template <class V> struct vec_traits; template <class Q> struct vec_traits< qvm_detail::quat_v_<Q> > { typedef qvm_detail::quat_v_<Q> this_vector; typedef typename quat_traits<Q>::scalar_type scalar_type; static int const dim=3; template <int I> BOOST_QVM_INLINE_CRITICAL static scalar_type read_element( this_vector const & q ) { BOOST_QVM_STATIC_ASSERT(I>=0); BOOST_QVM_STATIC_ASSERT(I<dim); return quat_traits<Q>::template read_element<I+1>( reinterpret_cast<Q const &>(q) ); } template <int I> BOOST_QVM_INLINE_CRITICAL static scalar_type & write_element( this_vector & q ) { BOOST_QVM_STATIC_ASSERT(I>=0); BOOST_QVM_STATIC_ASSERT(I<dim); return quat_traits<Q>::template write_element<I+1>( reinterpret_cast<Q &>(q) ); } }; template <class Q,int D> struct deduce_vec<qvm_detail::quat_v_<Q>,D> { typedef vec<typename quat_traits<Q>::scalar_type,D> type; }; template <class Q,int D> struct deduce_vec2<qvm_detail::quat_v_<Q>,qvm_detail::quat_v_<Q>,D> { typedef vec<typename quat_traits<Q>::scalar_type,D> type; }; template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c< is_quat<Q>::value, qvm_detail::quat_v_<Q> const &>::type V( Q const & a ) { return reinterpret_cast<qvm_detail::quat_v_<Q> const &>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c< is_quat<Q>::value, qvm_detail::quat_v_<Q> &>::type V( Q & a ) { return reinterpret_cast<qvm_detail::quat_v_<Q> &>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type>::type S( Q const & a ) { return quat_traits<Q>::template read_element<0>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type>::type X( Q const & a ) { return quat_traits<Q>::template read_element<1>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type>::type Y( Q const & a ) { return quat_traits<Q>::template read_element<2>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type>::type Z( Q const & a ) { return quat_traits<Q>::template read_element<3>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type &>::type S( Q & a ) { return quat_traits<Q>::template write_element<0>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type &>::type X( Q & a ) { return quat_traits<Q>::template write_element<1>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type &>::type Y( Q & a ) { return quat_traits<Q>::template write_element<2>(a); } template <class Q> BOOST_QVM_INLINE_TRIVIAL typename enable_if_c<is_quat<Q>::value,typename quat_traits<Q>::scalar_type &>::type Z( Q & a ) { return quat_traits<Q>::template write_element<3>(a); } } } #endif