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169 lines
7.0 KiB
C++
169 lines
7.0 KiB
C++
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//Copyright (c) 2008-2016 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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#ifndef UUID_A61EC088D31511DFA59D2B03E0D72085
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#define UUID_A61EC088D31511DFA59D2B03E0D72085
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#include <boost/qvm/vec_mat_operations2.hpp>
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#include <boost/qvm/vec_mat_operations3.hpp>
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#include <boost/qvm/vec_mat_operations4.hpp>
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namespace
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boost
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{
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namespace
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qvm
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{
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////////////////////////////////////////////////
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namespace
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qvm_detail
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{
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template <int M,int N>
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struct
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mul_mv_defined
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{
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static bool const value=false;
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};
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}
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template <class A,class B>
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BOOST_QVM_INLINE_OPERATIONS
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typename lazy_enable_if_c<
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is_mat<A>::value && is_vec<B>::value &&
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mat_traits<A>::cols==vec_traits<B>::dim &&
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!qvm_detail::mul_mv_defined<mat_traits<A>::rows,mat_traits<A>::cols>::value,
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deduce_vec2<A,B,mat_traits<A>::rows> >::type
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operator*( A const & a, B const & b )
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{
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typedef typename deduce_vec2<A,B,mat_traits<A>::rows>::type R;
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R r;
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for( int i=0; i<mat_traits<A>::rows; ++i )
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{
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typedef typename vec_traits<R>::scalar_type Tr;
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Tr x(scalar_traits<Tr>::value(0));
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for( int j=0; j<mat_traits<A>::cols; ++j )
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x += mat_traits<A>::read_element_idx(i,j,a)*vec_traits<B>::read_element_idx(j,b);
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vec_traits<R>::write_element_idx(i,r) = x;
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}
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return r;
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}
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namespace
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qvm_detail
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{
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template <int M,int N>
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struct
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mul_vm_defined
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{
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static bool const value=false;
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};
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}
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template <class A,class B>
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BOOST_QVM_INLINE_OPERATIONS
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typename lazy_enable_if_c<
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is_vec<A>::value && is_mat<B>::value &&
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vec_traits<A>::dim==mat_traits<B>::rows &&
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!qvm_detail::mul_vm_defined<mat_traits<B>::rows,mat_traits<B>::cols>::value,
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deduce_vec2<A,B,mat_traits<B>::cols> >::type
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operator*( A const & a, B const & b )
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{
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typedef typename deduce_vec2<A,B,mat_traits<B>::cols>::type R;
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R r;
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for( int i=0; i<mat_traits<B>::cols; ++i )
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{
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typedef typename vec_traits<R>::scalar_type Tr;
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Tr x(scalar_traits<Tr>::value(0));
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for( int j=0; j<mat_traits<B>::rows; ++j )
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x += vec_traits<A>::read_element_idx(j,a)*mat_traits<B>::read_element_idx(j,i,b);
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vec_traits<R>::write_element_idx(i,r) = x;
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}
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return r;
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}
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////////////////////////////////////////////////
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template <class A,class B>
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BOOST_QVM_INLINE_OPERATIONS
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typename lazy_enable_if_c<
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mat_traits<A>::rows==4 && mat_traits<A>::cols==4 &&
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vec_traits<B>::dim==3,
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deduce_vec2<A,B,3> >::type
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transform_point( A const & a, B const & b )
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{
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typedef typename mat_traits<A>::scalar_type Ta;
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typedef typename vec_traits<B>::scalar_type Tb;
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Ta const a00 = mat_traits<A>::template read_element<0,0>(a);
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Ta const a01 = mat_traits<A>::template read_element<0,1>(a);
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Ta const a02 = mat_traits<A>::template read_element<0,2>(a);
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Ta const a03 = mat_traits<A>::template read_element<0,3>(a);
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Ta const a10 = mat_traits<A>::template read_element<1,0>(a);
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Ta const a11 = mat_traits<A>::template read_element<1,1>(a);
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Ta const a12 = mat_traits<A>::template read_element<1,2>(a);
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Ta const a13 = mat_traits<A>::template read_element<1,3>(a);
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Ta const a20 = mat_traits<A>::template read_element<2,0>(a);
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Ta const a21 = mat_traits<A>::template read_element<2,1>(a);
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Ta const a22 = mat_traits<A>::template read_element<2,2>(a);
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Ta const a23 = mat_traits<A>::template read_element<2,3>(a);
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Tb const b0 = vec_traits<B>::template read_element<0>(b);
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Tb const b1 = vec_traits<B>::template read_element<1>(b);
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Tb const b2 = vec_traits<B>::template read_element<2>(b);
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typedef typename deduce_vec2<A,B,3>::type R;
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BOOST_QVM_STATIC_ASSERT(vec_traits<R>::dim==3);
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R r;
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vec_traits<R>::template write_element<0>(r)=a00*b0+a01*b1+a02*b2+a03;
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vec_traits<R>::template write_element<1>(r)=a10*b0+a11*b1+a12*b2+a13;
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vec_traits<R>::template write_element<2>(r)=a20*b0+a21*b1+a22*b2+a23;
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return r;
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}
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template <class A,class B>
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BOOST_QVM_INLINE_OPERATIONS
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typename lazy_enable_if_c<
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mat_traits<A>::rows==4 && mat_traits<A>::cols==4 &&
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vec_traits<B>::dim==3,
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deduce_vec2<A,B,3> >::type
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transform_vector( A const & a, B const & b )
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{
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typedef typename mat_traits<A>::scalar_type Ta;
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typedef typename vec_traits<B>::scalar_type Tb;
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Ta const a00 = mat_traits<A>::template read_element<0,0>(a);
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Ta const a01 = mat_traits<A>::template read_element<0,1>(a);
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Ta const a02 = mat_traits<A>::template read_element<0,2>(a);
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Ta const a10 = mat_traits<A>::template read_element<1,0>(a);
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Ta const a11 = mat_traits<A>::template read_element<1,1>(a);
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Ta const a12 = mat_traits<A>::template read_element<1,2>(a);
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Ta const a20 = mat_traits<A>::template read_element<2,0>(a);
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Ta const a21 = mat_traits<A>::template read_element<2,1>(a);
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Ta const a22 = mat_traits<A>::template read_element<2,2>(a);
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Tb const b0 = vec_traits<B>::template read_element<0>(b);
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Tb const b1 = vec_traits<B>::template read_element<1>(b);
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Tb const b2 = vec_traits<B>::template read_element<2>(b);
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typedef typename deduce_vec2<A,B,3>::type R;
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BOOST_QVM_STATIC_ASSERT(vec_traits<R>::dim==3);
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R r;
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vec_traits<R>::template write_element<0>(r)=a00*b0+a01*b1+a02*b2;
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vec_traits<R>::template write_element<1>(r)=a10*b0+a11*b1+a12*b2;
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vec_traits<R>::template write_element<2>(r)=a20*b0+a21*b1+a22*b2;
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return r;
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}
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////////////////////////////////////////////////
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namespace
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sfinae
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{
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using ::boost::qvm::operator*;
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using ::boost::qvm::transform_point;
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using ::boost::qvm::transform_vector;
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}
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////////////////////////////////////////////////
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}
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}
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#endif
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