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Added compScale

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This commit is contained in:
Christophe Riccio 2015-09-28 19:23:16 +02:00
parent 062e1238fa
commit 26f1065429
4 changed files with 76 additions and 14 deletions
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doc/glm.docx
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3
glm/gtx/component_wise.hpp
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@ -60,6 +60,9 @@ namespace glm
template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<floatType, P> compNormalize(vecType<T, P> const & v);
template <typename floatType, typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> compScale(vecType<floatType, P> const & v);
/// Add all vector components together.
/// @see gtx_component_wise
template <typename genType>

41
glm/gtx/component_wise.inl
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@ -67,6 +67,39 @@ namespace detail
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 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_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>
@ -77,6 +110,14 @@ namespace detail
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, "'compNormalize' 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)
{

46
test/gtx/gtx_component_wise.cpp
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@ -35,7 +35,7 @@
#include <glm/gtc/constants.hpp>
#include <limits>
namespace integer_8bit_test
namespace compNormalize
{
int run()
{
@ -59,16 +59,6 @@ namespace integer_8bit_test
Error += glm::epsilonEqual(A.w, 1.0f, glm::epsilon<float>()) ? 0 : 1;
}
return Error;
}
}//namespace integer_8bit_test
namespace integer_16bit_test
{
int run()
{
int Error(0);
{
glm::vec4 const A = glm::compNormalize<float>(glm::u16vec4(
std::numeric_limits<glm::u16>::min(),
@ -97,14 +87,42 @@ namespace integer_16bit_test
return Error;
}
}//namespace integer_16bit_test
}//namespace compNormalize
namespace compScale
{
int run()
{
int Error(0);
{
glm::u8vec4 const A = glm::compScale<glm::u8>(glm::vec4(0.0f, 0.2f, 0.5f, 1.0f));
Error += A.x == std::numeric_limits<glm::u8>::min() ? 0 : 1;
Error += A.y > (std::numeric_limits<glm::u8>::max() >> 1) ? 0 : 1;
Error += A.z < (std::numeric_limits<glm::u8>::max() >> 2) ? 0 : 1;
Error += A.x == std::numeric_limits<glm::u8>::max() ? 0 : 1;
}
{
glm::u16vec4 const A = glm::compScale<glm::u16>(glm::vec4(0.0f, 0.2f, 0.5f, 1.0f));
Error += A.x == std::numeric_limits<glm::u16>::min() ? 0 : 1;
Error += A.y > (std::numeric_limits<glm::u16>::max() >> 1) ? 0 : 1;
Error += A.z < (std::numeric_limits<glm::u16>::max() >> 2) ? 0 : 1;
Error += A.x == std::numeric_limits<glm::u16>::max() ? 0 : 1;
}
return Error;
}
}// compScale
int main()
{
int Error(0);
Error += integer_8bit_test::run();
Error += integer_16bit_test::run();
Error += compNormalize::run();
Error += compScale::run();
return Error;
}