_noise.hpp
#pragma once
#include "../common.hpp"
namespace glm{
namespace detail
{
template<typename T>
GLM_FUNC_QUALIFIER T mod289(T const& x)
{
return x - floor(x * (static_cast<T>(1.0) / static_cast<T>(289.0))) * static_cast<T>(289.0);
}
template<typename T>
GLM_FUNC_QUALIFIER T permute(T const& x)
{
return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<2, T, Q> permute(vec<2, T, Q> const& x)
{
return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<3, T, Q> permute(vec<3, T, Q> const& x)
{
return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<4, T, Q> permute(vec<4, T, Q> const& x)
{
return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
}
template<typename T>
GLM_FUNC_QUALIFIER T taylorInvSqrt(T const& r)
{
return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r;
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<2, T, Q> taylorInvSqrt(vec<2, T, Q> const& r)
{
return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r;
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<3, T, Q> taylorInvSqrt(vec<3, T, Q> const& r)
{
return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r;
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<4, T, Q> taylorInvSqrt(vec<4, T, Q> const& r)
{
return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r;
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<2, T, Q> fade(vec<2, T, Q> const& t)
{
return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10));
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<3, T, Q> fade(vec<3, T, Q> const& t)
{
return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10));
}
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<4, T, Q> fade(vec<4, T, Q> const& t)
{
return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10));
}
}//namespace detail
}//namespace glm
glm::floor
GLM_FUNC_DECL vec< L, T, Q > floor(vec< L, T, Q > const &x)
Returns a value equal to the nearest integer that is less then or equal to x.