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/gtx/vector_angle.inl | 44 ++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 src/include/glm/gtx/vector_angle.inl (limited to 'src/include/glm/gtx/vector_angle.inl') diff --git a/src/include/glm/gtx/vector_angle.inl b/src/include/glm/gtx/vector_angle.inl new file mode 100644 index 0000000..b12f386 --- /dev/null +++ b/src/include/glm/gtx/vector_angle.inl @@ -0,0 +1,44 @@ +/// @ref gtx_vector_angle + +namespace glm +{ + template + GLM_FUNC_QUALIFIER genType angle + ( + genType const& x, + genType const& y + ) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'angle' only accept floating-point inputs"); + return acos(clamp(dot(x, y), genType(-1), genType(1))); + } + + template + GLM_FUNC_QUALIFIER T angle(vec const& x, vec const& y) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'angle' only accept floating-point inputs"); + return acos(clamp(dot(x, y), T(-1), T(1))); + } + + //! \todo epsilon is hard coded to 0.01 + template + GLM_FUNC_QUALIFIER T orientedAngle(vec<2, T, Q> const& x, vec<2, T, Q> const& y) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'orientedAngle' only accept floating-point inputs"); + T const Angle(acos(clamp(dot(x, y), T(-1), T(1)))); + + if(all(epsilonEqual(y, glm::rotate(x, Angle), T(0.0001)))) + return Angle; + else + return -Angle; + } + + template + GLM_FUNC_QUALIFIER T orientedAngle(vec<3, T, Q> const& x, vec<3, T, Q> const& y, vec<3, T, Q> const& ref) + { + GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, "'orientedAngle' only accept floating-point inputs"); + + T const Angle(acos(clamp(dot(x, y), T(-1), T(1)))); + return mix(Angle, -Angle, dot(ref, cross(x, y)) < T(0)); + } +}//namespace glm -- cgit v1.2.3-18-g5258