| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| // OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net) |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| // Created : 2007-03-05 |
| // Updated : 2007-03-05 |
| // Licence : This source is under MIT License |
| // File : glm/gtx/matrix_query.inl |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| // Dependency: |
| // - GLM core |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| namespace glm |
| { |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNull(detail::tmat2x2<T, P> const & m, T const & epsilon) |
| { |
| bool result = true; |
| for(length_t i = 0; result && i < 2 ; ++i) |
| result = isNull(m[i], epsilon); |
| return result; |
| } |
| |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNull(detail::tmat3x3<T, P> const & m, T const & epsilon) |
| { |
| bool result = true; |
| for(length_t i = 0; result && i < 3 ; ++i) |
| result = isNull(m[i], epsilon); |
| return result; |
| } |
| |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNull(detail::tmat4x4<T, P> const & m, T const & epsilon) |
| { |
| bool result = true; |
| for(length_t i = 0; result && i < 4 ; ++i) |
| result = isNull(m[i], epsilon); |
| return result; |
| } |
| |
| template<typename T, precision P, template <typename, precision> class matType> |
| GLM_FUNC_QUALIFIER bool isIdentity(matType<T, P> const & m, T const & epsilon) |
| { |
| bool result = true; |
| for(length_t i(0); result && i < m[0].length(); ++i) |
| { |
| for(length_t j(0); result && j < i ; ++j) |
| result = abs(m[i][j]) <= epsilon; |
| if(result) |
| result = abs(m[i][i] - 1) <= epsilon; |
| for(length_t j(i + 1); result && j < m.length(); ++j) |
| result = abs(m[i][j]) <= epsilon; |
| } |
| return result; |
| } |
| |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNormalized(detail::tmat2x2<T, P> const & m, T const & epsilon) |
| { |
| bool result(true); |
| for(length_t i(0); result && i < m.length(); ++i) |
| result = isNormalized(m[i], epsilon); |
| for(length_t i(0); result && i < m.length(); ++i) |
| { |
| typename detail::tmat2x2<T, P>::col_type v; |
| for(length_t j(0); j < m.length(); ++j) |
| v[j] = m[j][i]; |
| result = isNormalized(v, epsilon); |
| } |
| return result; |
| } |
| |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNormalized(detail::tmat3x3<T, P> const & m, T const & epsilon) |
| { |
| bool result(true); |
| for(length_t i(0); result && i < m.length(); ++i) |
| result = isNormalized(m[i], epsilon); |
| for(length_t i(0); result && i < m.length(); ++i) |
| { |
| typename detail::tmat3x3<T, P>::col_type v; |
| for(length_t j(0); j < m.length(); ++j) |
| v[j] = m[j][i]; |
| result = isNormalized(v, epsilon); |
| } |
| return result; |
| } |
| |
| template<typename T, precision P> |
| GLM_FUNC_QUALIFIER bool isNormalized(detail::tmat4x4<T, P> const & m, T const & epsilon) |
| { |
| bool result(true); |
| for(length_t i(0); result && i < m.length(); ++i) |
| result = isNormalized(m[i], epsilon); |
| for(length_t i(0); result && i < m.length(); ++i) |
| { |
| typename detail::tmat4x4<T, P>::col_type v; |
| for(length_t j(0); j < m.length(); ++j) |
| v[j] = m[j][i]; |
| result = isNormalized(v, epsilon); |
| } |
| return result; |
| } |
| |
| template<typename T, precision P, template <typename, precision> class matType> |
| GLM_FUNC_QUALIFIER bool isOrthogonal(matType<T, P> const & m, T const & epsilon) |
| { |
| bool result(true); |
| for(length_t i(0); result && i < m.length() - 1; ++i) |
| for(length_t j(i + 1); result && j < m.length(); ++j) |
| result = areOrthogonal(m[i], m[j], epsilon); |
| |
| if(result) |
| { |
| matType<T, P> tmp = transpose(m); |
| for(length_t i(0); result && i < m.length() - 1 ; ++i) |
| for(length_t j(i + 1); result && j < m.length(); ++j) |
| result = areOrthogonal(tmp[i], tmp[j], epsilon); |
| } |
| return result; |
| } |
| }//namespace glm |