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Added compScale
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doc/glm.docx
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@ -60,6 +60,9 @@ namespace glm
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template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
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template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
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GLM_FUNC_DECL vecType<floatType, P> compNormalize(vecType<T, P> const & v);
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GLM_FUNC_DECL vecType<floatType, P> compNormalize(vecType<T, P> const & v);
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template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
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GLM_FUNC_DECL vecType<T, P> compScale(vecType<floatType, P> const & v);
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/// Add all vector components together.
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/// Add all vector components together.
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/// @see gtx_component_wise
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/// @see gtx_component_wise
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template <typename genType>
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template <typename genType>
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@ -67,6 +67,39 @@ namespace detail
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return v;
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return v;
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}
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}
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};
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};
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template <typename T, typename floatType, precision P, template <typename, precision> class vecType, bool isInteger, bool signedType>
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struct compute_compScale
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{};
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template <typename T, typename floatType, precision P, template <typename, precision> class vecType>
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struct compute_compScale<T, floatType, P, vecType, true, true>
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{
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GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v)
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{
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floatType const Min = static_cast<floatType>(std::numeric_limits<T>::min());
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floatType const Max = static_cast<floatType>(std::numeric_limits<T>::max());
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return (vecType<floatType, P>(v) + Min) * (Max - Min) * static_cast<floatType>(2) - static_cast<floatType>(1);
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}
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};
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template <typename T, typename floatType, precision P, template <typename, precision> class vecType>
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struct compute_compScale<T, floatType, P, vecType, true, false>
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{
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GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v)
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{
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return vecType<T, P>(vecType<floatType, P>(v) * static_cast<floatType>(std::numeric_limits<T>::max()));
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}
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};
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template <typename T, typename floatType, precision P, template <typename, precision> class vecType>
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struct compute_compScale<T, floatType, P, vecType, false, true>
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{
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GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v)
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{
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return v;
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}
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};
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}//namespace detail
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}//namespace detail
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template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
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template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
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@ -77,6 +110,14 @@ namespace detail
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return detail::compute_compNormalize<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v);
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return detail::compute_compNormalize<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v);
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}
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}
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template <typename T, typename floatType, precision P, template <typename, precision> class vecType>
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GLM_FUNC_QUALIFIER vecType<T, P> compScale(vecType<floatType, P> const & v)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "'compNormalize' accepts only floating-point types for 'floatType' template parameter");
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return detail::compute_compScale<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v);
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}
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template <typename T, precision P, template <typename, precision> class vecType>
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template <typename T, precision P, template <typename, precision> class vecType>
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GLM_FUNC_QUALIFIER T compAdd(vecType<T, P> const & v)
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GLM_FUNC_QUALIFIER T compAdd(vecType<T, P> const & v)
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{
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{
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@ -35,7 +35,7 @@
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#include <glm/gtc/constants.hpp>
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#include <glm/gtc/constants.hpp>
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#include <limits>
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#include <limits>
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namespace integer_8bit_test
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namespace compNormalize
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{
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{
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int run()
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int run()
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{
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{
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@ -59,16 +59,6 @@ namespace integer_8bit_test
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Error += glm::epsilonEqual(A.w, 1.0f, glm::epsilon<float>()) ? 0 : 1;
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Error += glm::epsilonEqual(A.w, 1.0f, glm::epsilon<float>()) ? 0 : 1;
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}
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}
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return Error;
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}
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}//namespace integer_8bit_test
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namespace integer_16bit_test
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{
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int run()
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{
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int Error(0);
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{
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{
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glm::vec4 const A = glm::compNormalize<float>(glm::u16vec4(
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glm::vec4 const A = glm::compNormalize<float>(glm::u16vec4(
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std::numeric_limits<glm::u16>::min(),
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std::numeric_limits<glm::u16>::min(),
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@ -97,14 +87,42 @@ namespace integer_16bit_test
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return Error;
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return Error;
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}
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}
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}//namespace integer_16bit_test
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}//namespace compNormalize
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namespace compScale
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{
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int run()
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{
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int Error(0);
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{
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glm::u8vec4 const A = glm::compScale<glm::u8>(glm::vec4(0.0f, 0.2f, 0.5f, 1.0f));
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Error += A.x == std::numeric_limits<glm::u8>::min() ? 0 : 1;
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Error += A.y > (std::numeric_limits<glm::u8>::max() >> 1) ? 0 : 1;
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Error += A.z < (std::numeric_limits<glm::u8>::max() >> 2) ? 0 : 1;
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Error += A.x == std::numeric_limits<glm::u8>::max() ? 0 : 1;
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}
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{
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glm::u16vec4 const A = glm::compScale<glm::u16>(glm::vec4(0.0f, 0.2f, 0.5f, 1.0f));
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Error += A.x == std::numeric_limits<glm::u16>::min() ? 0 : 1;
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Error += A.y > (std::numeric_limits<glm::u16>::max() >> 1) ? 0 : 1;
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Error += A.z < (std::numeric_limits<glm::u16>::max() >> 2) ? 0 : 1;
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Error += A.x == std::numeric_limits<glm::u16>::max() ? 0 : 1;
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}
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return Error;
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}
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}// compScale
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int main()
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int main()
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{
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{
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int Error(0);
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int Error(0);
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Error += integer_8bit_test::run();
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Error += compNormalize::run();
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Error += integer_16bit_test::run();
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Error += compScale::run();
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return Error;
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return Error;
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}
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}
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