0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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#ifndef BOOST_QVM_QUAT_TRAITS
#define BOOST_QVM_QUAT_TRAITS
// Copyright 2008-2022 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/is_scalar.hpp>
#include <boost/qvm/enable_if.hpp>
#include <boost/qvm/config.hpp>
namespace boost { namespace qvm {
template <class Q>
struct
quat_traits
{
typedef void scalar_type;
};
template <class T>
struct
is_quat
{
static bool const value = is_scalar<typename quat_traits<T>::scalar_type>::value;
};
namespace
qvm_detail
{
template <class T, T>
struct
qtr_dispatch_yes
{
char x, y;
};
}
template <class T>
class
quat_write_element_ref
{
template <class U>
static qvm_detail::qtr_dispatch_yes<typename quat_traits<U>::scalar_type & (*)( U & ), &quat_traits<U>::template write_element<0> > check(int);
template <class>
static char check(long);
public:
static bool const value = sizeof(check<T>(0)) > 1;
};
template <int I, class Q>
BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
typename enable_if_c<
quat_write_element_ref<Q>::value,
void>::type
write_quat_element( Q & q, typename quat_traits<Q>::scalar_type s )
{
quat_traits<Q>::template write_element<I>(q) = s;
}
template <int I, class Q>
BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
typename enable_if_c<
!quat_write_element_ref<Q>::value,
void>::type
write_quat_element( Q & q, typename quat_traits<Q>::scalar_type s )
{
quat_traits<Q>::template write_element<I>(q, s);
}
template <class Q>
BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
typename enable_if_c<
quat_write_element_ref<Q>::value,
void>::type
write_quat_element_idx( int i, Q & q, typename quat_traits<Q>::scalar_type s )
{
quat_traits<Q>::template write_element_idx(i, q) = s;
}
template <class Q>
BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
typename enable_if_c<
!quat_write_element_ref<Q>::value,
void>::type
write_vec_element_idx( int i, Q & q, typename quat_traits<Q>::scalar_type s )
{
quat_traits<Q>::template write_element_idx(i, q, s);
}
} }
#endif
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