/// @ref gtx_norm /// @file glm/gtx/norm.inl #include "../detail/precision.hpp" namespace glm{ namespace detail { template <template <typename, precision> class vecType, typename T, precision P, bool Aligned> struct compute_length2 { GLM_FUNC_QUALIFIER static T call(vecType<T, P> const & v) { return dot(v, v); } }; }//namespace detail template <typename genType> GLM_FUNC_QUALIFIER genType length2(genType x) { GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'length2' accepts only floating-point inputs"); return x * x; } template <typename T, precision P, template <typename, precision> class vecType> GLM_FUNC_QUALIFIER T length2(vecType<T, P> const & v) { GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'length2' accepts only floating-point inputs"); return detail::compute_length2<vecType, T, P, detail::is_aligned<P>::value>::call(v); } template <typename T> GLM_FUNC_QUALIFIER T distance2(T p0, T p1) { GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'distance2' accepts only floating-point inputs"); return length2(p1 - p0); } template <typename T, precision P, template <typename, precision> class vecType> GLM_FUNC_QUALIFIER T distance2(vecType<T, P> const & p0, vecType<T, P> const & p1) { GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'distance2' accepts only floating-point inputs"); return length2(p1 - p0); } template <typename T, precision P> GLM_FUNC_QUALIFIER T l1Norm ( tvec3<T, P> const & a, tvec3<T, P> const & b ) { return abs(b.x - a.x) + abs(b.y - a.y) + abs(b.z - a.z); } template <typename T, precision P> GLM_FUNC_QUALIFIER T l1Norm ( tvec3<T, P> const & v ) { return abs(v.x) + abs(v.y) + abs(v.z); } template <typename T, precision P> GLM_FUNC_QUALIFIER T l2Norm ( tvec3<T, P> const & a, tvec3<T, P> const & b ) { return length(b - a); } template <typename T, precision P> GLM_FUNC_QUALIFIER T l2Norm ( tvec3<T, P> const & v ) { return length(v); } template <typename T, precision P> GLM_FUNC_QUALIFIER T lxNorm ( tvec3<T, P> const & x, tvec3<T, P> const & y, unsigned int Depth ) { return pow(pow(y.x - x.x, T(Depth)) + pow(y.y - x.y, T(Depth)) + pow(y.z - x.z, T(Depth)), T(1) / T(Depth)); } template <typename T, precision P> GLM_FUNC_QUALIFIER T lxNorm ( tvec3<T, P> const & v, unsigned int Depth ) { return pow(pow(v.x, T(Depth)) + pow(v.y, T(Depth)) + pow(v.z, T(Depth)), T(1) / T(Depth)); } }//namespace glm