95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
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#ifndef BOOST_QVM_DEDUCE_QUAT_HPP_INCLUDED
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#define BOOST_QVM_DEDUCE_QUAT_HPP_INCLUDED
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// Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/qvm/deduce_scalar.hpp>
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#include <boost/qvm/quat_traits.hpp>
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#include <boost/qvm/static_assert.hpp>
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namespace boost { namespace qvm {
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template <class T>
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struct quat;
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namespace
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qvm_detail
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{
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template <class Q,class S,
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class QS=typename quat_traits<Q>::scalar_type>
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struct
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deduce_q_default
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<Q>::value);
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typedef quat<typename quat_traits<Q>::scalar_type> type;
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};
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template <class Q,class S>
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struct
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deduce_q_default<Q,S,S>
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<Q>::value);
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typedef Q type;
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};
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}
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template <class Q,class S=typename quat_traits<Q>::scalar_type>
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struct
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deduce_quat
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<Q>::value);
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typedef typename qvm_detail::deduce_q_default<Q,S>::type type;
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};
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namespace
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qvm_detail
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{
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template <class A,class B,class S,
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bool IsScalarA=is_scalar<A>::value,
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bool IsScalarB=is_scalar<B>::value>
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struct
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deduce_q2_default
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{
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typedef quat<S> type;
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};
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template <class Q,class S>
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struct
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deduce_q2_default<Q,Q,S,false,false>
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<Q>::value);
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typedef Q type;
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};
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template <class A,class B,class S>
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struct
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deduce_q2_default<A,B,S,false,true>
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<A>::value);
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typedef typename deduce_quat<A,S>::type type;
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};
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template <class A,class B,class S>
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struct
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deduce_q2_default<A,B,S,true,false>
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<B>::value);
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typedef typename deduce_quat<B,S>::type type;
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};
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}
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template <class A,class B,class S=typename deduce_scalar<typename scalar<A>::type,typename scalar<B>::type>::type>
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struct
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deduce_quat2
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{
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BOOST_QVM_STATIC_ASSERT(is_quat<A>::value || is_quat<B>::value);
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typedef typename qvm_detail::deduce_q2_default<A,B,S>::type type;
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};
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} }
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#endif
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