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Diffstat (limited to 'include/glm/gtx/component_wise.inl')
| -rw-r--r-- | include/glm/gtx/component_wise.inl | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/include/glm/gtx/component_wise.inl b/include/glm/gtx/component_wise.inl new file mode 100644 index 0000000..3cb17d2 --- /dev/null +++ b/include/glm/gtx/component_wise.inl @@ -0,0 +1,157 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// 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_component_wise +/// @file glm/gtx/component_wise.inl +/// @date 2007-05-21 / 2011-06-07 +/// @author Christophe Riccio +/////////////////////////////////////////////////////////////////////////////////////////////////// + +#include <limits> + +namespace glm{ +namespace detail +{ + template <typename T, typename floatType, precision P, template <typename, precision> class vecType, bool isInteger, bool signedType> + struct compute_compNormalize + {}; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compNormalize<T, floatType, P, vecType, true, true> + { + GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) + { + floatType const Min = static_cast<floatType>(std::numeric_limits<T>::min()); + floatType const Max = static_cast<floatType>(std::numeric_limits<T>::max()); + return (vecType<floatType, P>(v) - Min) / (Max - Min) * static_cast<floatType>(2) - static_cast<floatType>(1); + } + }; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compNormalize<T, floatType, P, vecType, true, false> + { + GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) + { + return vecType<floatType, P>(v) / static_cast<floatType>(std::numeric_limits<T>::max()); + } + }; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compNormalize<T, floatType, P, vecType, false, true> + { + GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) + { + return v; + } + }; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType, bool isInteger, bool signedType> + struct compute_compScale + {}; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compScale<T, floatType, P, vecType, true, true> + { + GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) + { + floatType const Max = static_cast<floatType>(std::numeric_limits<T>::max()) + static_cast<floatType>(0.5); + vecType<floatType, P> const Scaled(v * Max); + vecType<T, P> const Result(Scaled - static_cast<floatType>(0.5)); + return Result; + } + }; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compScale<T, floatType, P, vecType, true, false> + { + GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) + { + return vecType<T, P>(vecType<floatType, P>(v) * static_cast<floatType>(std::numeric_limits<T>::max())); + } + }; + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + struct compute_compScale<T, floatType, P, vecType, false, true> + { + GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) + { + return v; + } + }; +}//namespace detail + + template <typename floatType, typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER vecType<floatType, P> compNormalize(vecType<T, P> const & v) + { + GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "'compNormalize' accepts only floating-point types for 'floatType' template parameter"); + + return detail::compute_compNormalize<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v); + } + + template <typename T, typename floatType, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER vecType<T, P> compScale(vecType<floatType, P> const & v) + { + GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "'compScale' accepts only floating-point types for 'floatType' template parameter"); + + return detail::compute_compScale<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v); + } + + template <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER T compAdd(vecType<T, P> const & v) + { + T Result(0); + for(length_t i = 0, n = v.length(); i < n; ++i) + Result += v[i]; + return Result; + } + + template <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER T compMul(vecType<T, P> const & v) + { + T Result(1); + for(length_t i = 0, n = v.length(); i < n; ++i) + Result *= v[i]; + return Result; + } + + template <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER T compMin(vecType<T, P> const & v) + { + T Result(v[0]); + for(length_t i = 1, n = v.length(); i < n; ++i) + Result = min(Result, v[i]); + return Result; + } + + template <typename T, precision P, template <typename, precision> class vecType> + GLM_FUNC_QUALIFIER T compMax(vecType<T, P> const & v) + { + T Result(v[0]); + for(length_t i = 1, n = v.length(); i < n; ++i) + Result = max(Result, v[i]); + return Result; + } +}//namespace glm |