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Diffstat (limited to '3rdparty/include/glm/gtx/vector_angle.inl')
| -rw-r--r-- | 3rdparty/include/glm/gtx/vector_angle.inl | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/3rdparty/include/glm/gtx/vector_angle.inl b/3rdparty/include/glm/gtx/vector_angle.inl new file mode 100644 index 0000000..ba5fdd4 --- /dev/null +++ b/3rdparty/include/glm/gtx/vector_angle.inl @@ -0,0 +1,87 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// OpenGL Mathematics (glm.g-truc.net) +/// +/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net) +/// Permission is hereby granted, free of charge, to any person obtaining a copy +/// of this software and associated documentation files (the "Software"), to deal +/// in the Software without restriction, including without limitation the rights +/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +/// copies of the Software, and to permit persons to whom the Software is +/// furnished to do so, subject to the following conditions: +/// +/// The above copyright notice and this permission notice shall be included in +/// all copies or substantial portions of the Software. +/// +/// Restrictions: +/// By making use of the Software for military purposes, you choose to make +/// a Bunny unhappy. +/// +/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +/// THE SOFTWARE. +/// +/// @ref gtx_vector_angle +/// @file glm/gtx/vector_angle.inl +/// @date 2005-12-30 / 2011-06-07 +/// @author Christophe Riccio +/////////////////////////////////////////////////////////////////////////////////// + +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 |