92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
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#ifndef BOOST_QVM_MAT_TRAITS_DEFAULTS_HPP_INCLUDED
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#define BOOST_QVM_MAT_TRAITS_DEFAULTS_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/config.hpp>
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#include <boost/qvm/assert.hpp>
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namespace boost { namespace qvm {
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template <class>
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struct mat_traits;
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namespace
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qvm_detail
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{
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template <int I,int N>
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struct
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matrix_w
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{
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template <class A>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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typename mat_traits<A>::scalar_type &
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write_element_idx( int r, int c, A & a )
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{
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return (I/mat_traits<A>::cols)==r && (I%mat_traits<A>::cols)==c?
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mat_traits<A>::template write_element<I/mat_traits<A>::cols,I%mat_traits<A>::cols>(a) :
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matrix_w<I+1,N>::write_element_idx(r,c,a);
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}
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};
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template <int N>
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struct
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matrix_w<N,N>
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{
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template <class A>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
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typename mat_traits<A>::scalar_type &
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write_element_idx( int, int, A & a )
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{
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BOOST_QVM_ASSERT(0);
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return mat_traits<A>::template write_element<0,0>(a);
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}
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};
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}
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template <class MatType,class ScalarType,int Rows,int Cols>
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struct
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mat_traits_defaults
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{
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typedef MatType mat_type;
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typedef ScalarType scalar_type;
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static int const rows=Rows;
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static int const cols=Cols;
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template <int Row,int Col>
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type
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read_element( mat_type const & x )
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{
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return mat_traits<mat_type>::template write_element<Row,Col>(const_cast<mat_type &>(x));
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}
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
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scalar_type
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read_element_idx( int r, int c, mat_type const & x )
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{
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return mat_traits<mat_type>::write_element_idx(r,c,const_cast<mat_type &>(x));
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}
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protected:
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static
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BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
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scalar_type &
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write_element_idx( int r, int c, mat_type & m )
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{
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return qvm_detail::matrix_w<0,mat_traits<mat_type>::rows*mat_traits<mat_type>::cols>::write_element_idx(r,c,m);
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}
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};
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} }
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#endif
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