88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
/// @ref core
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/// @file glm/detail/_noise.hpp
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#pragma once
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#include "../vec2.hpp"
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#include "../vec3.hpp"
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#include "../vec4.hpp"
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#include "../common.hpp"
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namespace glm{
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namespace detail
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{
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template<typename T>
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GLM_FUNC_QUALIFIER T mod289(T const& x)
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{
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return x - floor(x * (static_cast<T>(1.0) / static_cast<T>(289.0))) * static_cast<T>(289.0);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER T permute(T const& x)
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{
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return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<2, T, Q> permute(vec<2, T, Q> const& x)
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{
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return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<3, T, Q> permute(vec<3, T, Q> const& x)
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{
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return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<4, T, Q> permute(vec<4, T, Q> const& x)
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{
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return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER T taylorInvSqrt(T const& r)
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{
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return T(1.79284291400159) - T(0.85373472095314) * r;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<2, T, Q> taylorInvSqrt(vec<2, T, Q> const& r)
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{
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return T(1.79284291400159) - T(0.85373472095314) * r;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<3, T, Q> taylorInvSqrt(vec<3, T, Q> const& r)
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{
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return T(1.79284291400159) - T(0.85373472095314) * r;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<4, T, Q> taylorInvSqrt(vec<4, T, Q> const& r)
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{
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return T(1.79284291400159) - T(0.85373472095314) * r;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<2, T, Q> fade(vec<2, T, Q> const& t)
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{
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return (t * t * t) * (t * (t * T(6) - T(15)) + T(10));
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<3, T, Q> fade(vec<3, T, Q> const& t)
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{
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return (t * t * t) * (t * (t * T(6) - T(15)) + T(10));
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER vec<4, T, Q> fade(vec<4, T, Q> const& t)
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{
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return (t * t * t) * (t * (t * T(6) - T(15)) + T(10));
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}
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}//namespace detail
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}//namespace glm
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