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154 lines
4.7 KiB
154 lines
4.7 KiB
///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2007-03-05
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// Updated : 2007-03-05
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// Licence : This source is under MIT License
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// File : glm/gtx/matrix_query.inl
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Dependency:
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// - GLM core
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///////////////////////////////////////////////////////////////////////////////////////////////////
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namespace glm
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{
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template<typename T>
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GLM_FUNC_QUALIFIER bool isNull
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(
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detail::tmat2x2<T> const & m,
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T const & epsilon)
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{
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bool result = true;
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for(int i = 0; result && i < 2 ; ++i)
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result = isNull(m[i], epsilon);
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return result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER bool isNull
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(
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detail::tmat3x3<T> const & m,
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T const & epsilon
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)
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{
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bool result = true;
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for(int i = 0; result && i < 3 ; ++i)
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result = isNull(m[i], epsilon);
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return result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER bool isNull
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(
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detail::tmat4x4<T> const & m,
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T const & epsilon
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)
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{
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bool result = true;
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for(int i = 0; result && i < 4 ; ++i)
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result = isNull(m[i], epsilon);
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return result;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER bool isIdentity
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(
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genType const & m,
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typename genType::value_type const & epsilon
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)
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{
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bool result = true;
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for(typename genType::size_type i = typename genType::size_type(0); result && i < genType::col_size(); ++i)
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{
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for(typename genType::size_type j = typename genType::size_type(0); result && j < i ; ++j)
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result = abs(m[i][j]) <= epsilon;
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if(result)
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result = abs(m[i][i] - typename genType::value_type(1)) <= epsilon;
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for(typename genType::size_type j = i + typename genType::size_type(1); result && j < genType::row_size(); ++j)
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result = abs(m[i][j]) <= epsilon;
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}
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return result;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER bool isNormalized
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(
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detail::tmat2x2<genType> const & m,
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genType const & epsilon
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)
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{
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bool result(true);
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for(typename detail::tmat2x2<genType>::size_type i(0); result && i < m.length(); ++i)
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result = isNormalized(m[i], epsilon);
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for(typename detail::tmat2x2<genType>::size_type i(0); result && i < m.length(); ++i)
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{
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typename detail::tmat2x2<genType>::col_type v;
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for(typename detail::tmat2x2<genType>::size_type j(0); j < m.length(); ++j)
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v[j] = m[j][i];
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result = isNormalized(v, epsilon);
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}
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return result;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER bool isNormalized
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(
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detail::tmat3x3<genType> const & m,
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genType const & epsilon
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)
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{
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bool result(true);
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for(typename detail::tmat3x3<genType>::size_type i(0); result && i < m.length(); ++i)
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result = isNormalized(m[i], epsilon);
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for(typename detail::tmat3x3<genType>::size_type i(0); result && i < m.length(); ++i)
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{
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typename detail::tmat3x3<genType>::col_type v;
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for(typename detail::tmat3x3<genType>::size_type j(0); j < m.length(); ++j)
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v[j] = m[j][i];
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result = isNormalized(v, epsilon);
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}
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return result;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER bool isNormalized
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(
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detail::tmat4x4<genType> const & m,
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genType const & epsilon
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)
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{
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bool result(true);
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for(typename detail::tmat4x4<genType>::size_type i(0); result && i < m.length(); ++i)
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result = isNormalized(m[i], epsilon);
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for(typename detail::tmat4x4<genType>::size_type i(0); result && i < m.length(); ++i)
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{
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typename detail::tmat4x4<genType>::col_type v;
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for(typename detail::tmat4x4<genType>::size_type j(0); j < m.length(); ++j)
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v[j] = m[j][i];
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result = isNormalized(v, epsilon);
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}
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return result;
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}
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template<typename genType, template <typename> class matType>
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GLM_FUNC_QUALIFIER bool isOrthogonal
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(
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matType<genType> const & m,
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genType const & epsilon
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)
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{
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bool result(true);
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for(typename matType<genType>::size_type i(0); result && i < m.length() - 1; ++i)
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for(typename matType<genType>::size_type j(i + 1); result && j < m.length(); ++j)
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result = areOrthogonal(m[i], m[j], epsilon);
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if(result)
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{
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matType<genType> tmp = transpose(m);
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for(typename matType<genType>::size_type i(0); result && i < m.length() - 1 ; ++i)
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for(typename matType<genType>::size_type j(i + 1); result && j < m.length(); ++j)
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result = areOrthogonal(tmp[i], tmp[j], epsilon);
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}
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return result;
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}
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}//namespace glm
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