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Diffstat (limited to 'external/include/glm/gtx/component_wise.inl')
-rw-r--r-- | external/include/glm/gtx/component_wise.inl | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/external/include/glm/gtx/component_wise.inl b/external/include/glm/gtx/component_wise.inl new file mode 100644 index 0000000..add3969 --- /dev/null +++ b/external/include/glm/gtx/component_wise.inl @@ -0,0 +1,128 @@ +/// @ref gtx_component_wise +/// @file glm/gtx/component_wise.inl + +#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 |