diff options
Diffstat (limited to 'external/include/glm/gtx/vector_angle.inl')
| -rw-r--r-- | external/include/glm/gtx/vector_angle.inl | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/external/include/glm/gtx/vector_angle.inl b/external/include/glm/gtx/vector_angle.inl new file mode 100644 index 0000000..05c3028 --- /dev/null +++ b/external/include/glm/gtx/vector_angle.inl @@ -0,0 +1,58 @@ +/// @ref gtx_vector_angle +/// @file glm/gtx/vector_angle.inl + +namespace glm +{ + template <typename genType> + GLM_FUNC_QUALIFIER genType angle + ( + genType const & x, + genType const & y + ) + { + GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'angle' only accept floating-point inputs"); + return acos(clamp(dot(x, y), genType(-1), genType(1))); + } + + template <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER T angle + ( + vecType<T, P> const & x, + vecType<T, P> const & y + ) + { + GLM_STATIC_ASSERT(std::numeric_limits<T>::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 <typename T, precision P> + GLM_FUNC_QUALIFIER T orientedAngle + ( + tvec2<T, P> const & x, + tvec2<T, P> const & y + ) + { + GLM_STATIC_ASSERT(std::numeric_limits<T>::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 <typename T, precision P> + GLM_FUNC_QUALIFIER T orientedAngle + ( + tvec3<T, P> const & x, + tvec3<T, P> const & y, + tvec3<T, P> const & ref + ) + { + GLM_STATIC_ASSERT(std::numeric_limits<T>::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 |