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///////////////////////////////////////////////////////////////////////////////////
/// 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
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