From a8b3118e8305fd1c668ea25e07157b625c9747ff Mon Sep 17 00:00:00 2001 From: Joursoir Date: Sat, 10 Apr 2021 17:29:02 +0000 Subject: add glm headers --- src/include/glm/detail/func_geometric.inl | 243 ++++++++++++++++++++++++++++++ 1 file changed, 243 insertions(+) create mode 100644 src/include/glm/detail/func_geometric.inl (limited to 'src/include/glm/detail/func_geometric.inl') diff --git a/src/include/glm/detail/func_geometric.inl b/src/include/glm/detail/func_geometric.inl new file mode 100644 index 0000000..7689756 --- /dev/null +++ b/src/include/glm/detail/func_geometric.inl @@ -0,0 +1,243 @@ +#include "../exponential.hpp" +#include "../common.hpp" + +namespace glm{ +namespace detail +{ + template + struct compute_length + { + GLM_FUNC_QUALIFIER static T call(vec const& v) + { + return sqrt(dot(v, v)); + } + }; + + template + struct compute_distance + { + GLM_FUNC_QUALIFIER static T call(vec const& p0, vec const& p1) + { + return length(p1 - p0); + } + }; + + template + struct compute_dot{}; + + template + struct compute_dot, T, Aligned> + { + GLM_FUNC_QUALIFIER static T call(vec<1, T, Q> const& a, vec<1, T, Q> const& b) + { + return a.x * b.x; + } + }; + + template + struct compute_dot, T, Aligned> + { + GLM_FUNC_QUALIFIER static T call(vec<2, T, Q> const& a, vec<2, T, Q> const& b) + { + vec<2, T, Q> tmp(a * b); + return tmp.x + tmp.y; + } + }; + + template + struct compute_dot, T, Aligned> + { + GLM_FUNC_QUALIFIER static T call(vec<3, T, Q> const& a, vec<3, T, Q> const& b) + { + vec<3, T, Q> tmp(a * b); + return tmp.x + tmp.y + tmp.z; + } + }; + + template + struct compute_dot, T, Aligned> + { + GLM_FUNC_QUALIFIER static T call(vec<4, T, Q> const& a, vec<4, T, Q> const& b) + { + vec<4, T, Q> tmp(a * b); + return (tmp.x + tmp.y) + (tmp.z + tmp.w); + } + }; + + template + struct compute_cross + { + GLM_FUNC_QUALIFIER static vec<3, T, Q> call(vec<3, T, Q> const& x, vec<3, T, Q> const& y) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'cross' accepts only floating-point inputs"); + + return vec<3, T, Q>( + x.y * y.z - y.y * x.z, + x.z * y.x - y.z * x.x, + x.x * y.y - y.x * x.y); + } + }; + + template + struct compute_normalize + { + GLM_FUNC_QUALIFIER static vec call(vec const& v) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'normalize' accepts only floating-point inputs"); + + return v * inversesqrt(dot(v, v)); + } + }; + + template + struct compute_faceforward + { + GLM_FUNC_QUALIFIER static vec call(vec const& N, vec const& I, vec const& Nref) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'normalize' accepts only floating-point inputs"); + + return dot(Nref, I) < static_cast(0) ? N : -N; + } + }; + + template + struct compute_reflect + { + GLM_FUNC_QUALIFIER static vec call(vec const& I, vec const& N) + { + return I - N * dot(N, I) * static_cast(2); + } + }; + + template + struct compute_refract + { + GLM_FUNC_QUALIFIER static vec call(vec const& I, vec const& N, T eta) + { + T const dotValue(dot(N, I)); + T const k(static_cast(1) - eta * eta * (static_cast(1) - dotValue * dotValue)); + vec const Result = + (k >= static_cast(0)) ? (eta * I - (eta * dotValue + std::sqrt(k)) * N) : vec(0); + return Result; + } + }; +}//namespace detail + + // length + template + GLM_FUNC_QUALIFIER genType length(genType x) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'length' accepts only floating-point inputs"); + + return abs(x); + } + + template + GLM_FUNC_QUALIFIER T length(vec const& v) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'length' accepts only floating-point inputs"); + + return detail::compute_length::value>::call(v); + } + + // distance + template + GLM_FUNC_QUALIFIER genType distance(genType const& p0, genType const& p1) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'distance' accepts only floating-point inputs"); + + return length(p1 - p0); + } + + template + GLM_FUNC_QUALIFIER T distance(vec const& p0, vec const& p1) + { + return detail::compute_distance::value>::call(p0, p1); + } + + // dot + template + GLM_FUNC_QUALIFIER T dot(T x, T y) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'dot' accepts only floating-point inputs"); + return x * y; + } + + template + GLM_FUNC_QUALIFIER T dot(vec const& x, vec const& y) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'dot' accepts only floating-point inputs"); + return detail::compute_dot, T, detail::is_aligned::value>::call(x, y); + } + + // cross + template + GLM_FUNC_QUALIFIER vec<3, T, Q> cross(vec<3, T, Q> const& x, vec<3, T, Q> const& y) + { + return detail::compute_cross::value>::call(x, y); + } +/* + // normalize + template + GLM_FUNC_QUALIFIER genType normalize(genType const& x) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'normalize' accepts only floating-point inputs"); + + return x < genType(0) ? genType(-1) : genType(1); + } +*/ + template + GLM_FUNC_QUALIFIER vec normalize(vec const& x) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'normalize' accepts only floating-point inputs"); + + return detail::compute_normalize::value>::call(x); + } + + // faceforward + template + GLM_FUNC_QUALIFIER genType faceforward(genType const& N, genType const& I, genType const& Nref) + { + return dot(Nref, I) < static_cast(0) ? N : -N; + } + + template + GLM_FUNC_QUALIFIER vec faceforward(vec const& N, vec const& I, vec const& Nref) + { + return detail::compute_faceforward::value>::call(N, I, Nref); + } + + // reflect + template + GLM_FUNC_QUALIFIER genType reflect(genType const& I, genType const& N) + { + return I - N * dot(N, I) * genType(2); + } + + template + GLM_FUNC_QUALIFIER vec reflect(vec const& I, vec const& N) + { + return detail::compute_reflect::value>::call(I, N); + } + + // refract + template + GLM_FUNC_QUALIFIER genType refract(genType const& I, genType const& N, genType eta) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'refract' accepts only floating-point inputs"); + genType const dotValue(dot(N, I)); + genType const k(static_cast(1) - eta * eta * (static_cast(1) - dotValue * dotValue)); + return (eta * I - (eta * dotValue + sqrt(k)) * N) * static_cast(k >= static_cast(0)); + } + + template + GLM_FUNC_QUALIFIER vec refract(vec const& I, vec const& N, T eta) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'refract' accepts only floating-point inputs"); + return detail::compute_refract::value>::call(I, N, eta); + } +}//namespace glm + +#if GLM_CONFIG_SIMD == GLM_ENABLE +# include "func_geometric_simd.inl" +#endif -- cgit v1.2.3-18-g5258