158 lines
6.3 KiB
C++
158 lines
6.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
/// 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(detail::component_count_t i = 0; i < detail::component_count(v); ++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(detail::component_count_t i = 0; i < detail::component_count(v); ++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(detail::component_count_t i = 1; i < detail::component_count(v); ++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(detail::component_count_t i = 1; i < detail::component_count(v); ++i)
|
|
result = max(result, v[i]);
|
|
return result;
|
|
}
|
|
}//namespace glm
|