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222 lines
6.3 KiB
222 lines
6.3 KiB
/////////////////////////////////////////////////////////////////////////////////// |
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/// OpenGL Mathematics (glm.g-truc.net) |
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/// |
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/// Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net) |
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/// Permission is hereby granted, free of charge, to any person obtaining a copy |
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/// of this software and associated documentation files (the "Software"), to deal |
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/// in the Software without restriction, including without limitation the rights |
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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/// copies of the Software, and to permit persons to whom the Software is |
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/// furnished to do so, subject to the following conditions: |
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/// |
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/// The above copyright notice and this permission notice shall be included in |
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/// all copies or substantial portions of the Software. |
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/// |
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/// Restrictions: |
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/// By making use of the Software for military purposes, you choose to make |
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/// a Bunny unhappy. |
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/// |
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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/// THE SOFTWARE. |
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/// |
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/// @ref gtx_vector_query |
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/// @file glm/gtx/vector_query.inl |
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/// @date 2008-03-10 / 2011-06-07 |
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/// @author Christophe Riccio |
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/////////////////////////////////////////////////////////////////////////////////// |
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#include <cassert> |
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namespace glm{ |
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namespace detail |
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{ |
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template <typename T, precision P, template <typename, precision> class vecType> |
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struct compute_areCollinear{}; |
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template <typename T, precision P> |
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struct compute_areCollinear<T, P, tvec2> |
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{ |
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GLM_FUNC_QUALIFIER static bool call(tvec2<T, P> const & v0, tvec2<T, P> const & v1, T const & epsilon) |
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{ |
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return length(cross(tvec3<T, P>(v0, static_cast<T>(0)), tvec3<T, P>(v1, static_cast<T>(0)))) < epsilon; |
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} |
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}; |
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template <typename T, precision P> |
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struct compute_areCollinear<T, P, tvec3> |
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{ |
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GLM_FUNC_QUALIFIER static bool call(tvec3<T, P> const & v0, tvec3<T, P> const & v1, T const & epsilon) |
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{ |
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return length(cross(v0, v1)) < epsilon; |
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} |
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}; |
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template <typename T, precision P> |
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struct compute_areCollinear<T, P, tvec4> |
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{ |
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GLM_FUNC_QUALIFIER static bool call(tvec4<T, P> const & v0, tvec4<T, P> const & v1, T const & epsilon) |
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{ |
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return length(cross(tvec3<T, P>(v0), tvec3<T, P>(v1))) < epsilon; |
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} |
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}; |
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template <typename T, precision P, template <typename, precision> class vecType> |
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struct compute_isCompNull{}; |
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template <typename T, precision P> |
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struct compute_isCompNull<T, P, tvec2> |
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{ |
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GLM_FUNC_QUALIFIER static tvec2<bool, P> call(tvec2<T, P> const & v, T const & epsilon) |
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{ |
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return tvec2<bool, P>( |
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(abs(v.x) < epsilon), |
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(abs(v.y) < epsilon)); |
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} |
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}; |
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template <typename T, precision P> |
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struct compute_isCompNull<T, P, tvec3> |
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{ |
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GLM_FUNC_QUALIFIER static tvec3<bool, P> call(tvec3<T, P> const & v, T const & epsilon) |
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{ |
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return tvec3<bool, P>( |
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(abs(v.x) < epsilon), |
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(abs(v.y) < epsilon), |
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(abs(v.z) < epsilon)); |
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} |
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}; |
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template <typename T, precision P> |
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struct compute_isCompNull<T, P, tvec4> |
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{ |
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GLM_FUNC_QUALIFIER static tvec4<bool, P> call(tvec4<T, P> const & v, T const & epsilon) |
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{ |
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return tvec4<bool, P>( |
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(abs(v.x) < epsilon), |
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(abs(v.y) < epsilon), |
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(abs(v.z) < epsilon), |
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(abs(v.w) < epsilon)); |
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} |
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}; |
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}//namespace detail |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER bool areCollinear |
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( |
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vecType<T, P> const & v0, |
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vecType<T, P> const & v1, |
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T const & epsilon |
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) |
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{ |
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'areCollinear' only accept floating-point inputs"); |
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return detail::compute_areCollinear<T, P, vecType>::call(v0, v1, epsilon); |
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} |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER bool areOrthogonal |
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( |
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vecType<T, P> const & v0, |
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vecType<T, P> const & v1, |
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T const & epsilon |
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) |
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{ |
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'areOrthogonal' only accept floating-point inputs"); |
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return abs(dot(v0, v1)) <= max( |
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static_cast<T>(1), |
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length(v0)) * max(static_cast<T>(1), length(v1)) * epsilon; |
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} |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER bool isNormalized |
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( |
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vecType<T, P> const & v, |
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T const & epsilon |
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) |
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{ |
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isNormalized' only accept floating-point inputs"); |
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return abs(length(v) - static_cast<T>(1)) <= static_cast<T>(2) * epsilon; |
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} |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER bool isNull |
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( |
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vecType<T, P> const & v, |
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T const & epsilon |
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) |
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{ |
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isNull' only accept floating-point inputs"); |
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return length(v) <= epsilon; |
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} |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER vecType<bool, P> isCompNull |
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( |
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vecType<T, P> const & v, |
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T const & epsilon |
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) |
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{ |
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isCompNull' only accept floating-point inputs"); |
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return detail::compute_isCompNull<T, P, vecType>::call(v, epsilon); |
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} |
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template <typename T, precision P> |
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GLM_FUNC_QUALIFIER tvec2<bool, P> isCompNull |
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( |
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tvec2<T, P> const & v, |
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T const & epsilon) |
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{ |
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return tvec2<bool, P>( |
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abs(v.x) < epsilon, |
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abs(v.y) < epsilon); |
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} |
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template <typename T, precision P> |
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GLM_FUNC_QUALIFIER tvec3<bool, P> isCompNull |
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( |
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tvec3<T, P> const & v, |
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T const & epsilon |
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) |
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{ |
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return tvec3<bool, P>( |
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abs(v.x) < epsilon, |
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abs(v.y) < epsilon, |
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abs(v.z) < epsilon); |
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} |
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template <typename T, precision P> |
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GLM_FUNC_QUALIFIER tvec4<bool, P> isCompNull |
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( |
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tvec4<T, P> const & v, |
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T const & epsilon |
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) |
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{ |
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return tvec4<bool, P>( |
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abs(v.x) < epsilon, |
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abs(v.y) < epsilon, |
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abs(v.z) < epsilon, |
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abs(v.w) < epsilon); |
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} |
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template <typename T, precision P, template <typename, precision> class vecType> |
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GLM_FUNC_QUALIFIER bool areOrthonormal |
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( |
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vecType<T, P> const & v0, |
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vecType<T, P> const & v1, |
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T const & epsilon |
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) |
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{ |
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return isNormalized(v0, epsilon) && isNormalized(v1, epsilon) && (abs(dot(v0, v1)) <= epsilon); |
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} |
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}//namespace glm
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