| 1 | #pragma once |
| 2 | |
| 3 | #include "../common.hpp" |
| 4 | |
| 5 | namespace glm{ |
| 6 | namespace detail |
| 7 | { |
| 8 | template<typename T> |
| 9 | GLM_FUNC_QUALIFIER T mod289(T const& x) |
| 10 | { |
| 11 | return x - floor(x * (static_cast<T>(1.0) / static_cast<T>(289.0))) * static_cast<T>(289.0); |
| 12 | } |
| 13 | |
| 14 | template<typename T> |
| 15 | GLM_FUNC_QUALIFIER T permute(T const& x) |
| 16 | { |
| 17 | return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x); |
| 18 | } |
| 19 | |
| 20 | template<typename T, qualifier Q> |
| 21 | GLM_FUNC_QUALIFIER vec<2, T, Q> permute(vec<2, T, Q> const& x) |
| 22 | { |
| 23 | return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x); |
| 24 | } |
| 25 | |
| 26 | template<typename T, qualifier Q> |
| 27 | GLM_FUNC_QUALIFIER vec<3, T, Q> permute(vec<3, T, Q> const& x) |
| 28 | { |
| 29 | return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x); |
| 30 | } |
| 31 | |
| 32 | template<typename T, qualifier Q> |
| 33 | GLM_FUNC_QUALIFIER vec<4, T, Q> permute(vec<4, T, Q> const& x) |
| 34 | { |
| 35 | return mod289(((x * static_cast<T>(34)) + static_cast<T>(1)) * x); |
| 36 | } |
| 37 | |
| 38 | template<typename T> |
| 39 | GLM_FUNC_QUALIFIER T taylorInvSqrt(T const& r) |
| 40 | { |
| 41 | return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r; |
| 42 | } |
| 43 | |
| 44 | template<typename T, qualifier Q> |
| 45 | GLM_FUNC_QUALIFIER vec<2, T, Q> taylorInvSqrt(vec<2, T, Q> const& r) |
| 46 | { |
| 47 | return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r; |
| 48 | } |
| 49 | |
| 50 | template<typename T, qualifier Q> |
| 51 | GLM_FUNC_QUALIFIER vec<3, T, Q> taylorInvSqrt(vec<3, T, Q> const& r) |
| 52 | { |
| 53 | return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r; |
| 54 | } |
| 55 | |
| 56 | template<typename T, qualifier Q> |
| 57 | GLM_FUNC_QUALIFIER vec<4, T, Q> taylorInvSqrt(vec<4, T, Q> const& r) |
| 58 | { |
| 59 | return static_cast<T>(1.79284291400159) - static_cast<T>(0.85373472095314) * r; |
| 60 | } |
| 61 | |
| 62 | template<typename T, qualifier Q> |
| 63 | GLM_FUNC_QUALIFIER vec<2, T, Q> fade(vec<2, T, Q> const& t) |
| 64 | { |
| 65 | return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10)); |
| 66 | } |
| 67 | |
| 68 | template<typename T, qualifier Q> |
| 69 | GLM_FUNC_QUALIFIER vec<3, T, Q> fade(vec<3, T, Q> const& t) |
| 70 | { |
| 71 | return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10)); |
| 72 | } |
| 73 | |
| 74 | template<typename T, qualifier Q> |
| 75 | GLM_FUNC_QUALIFIER vec<4, T, Q> fade(vec<4, T, Q> const& t) |
| 76 | { |
| 77 | return (t * t * t) * (t * (t * static_cast<T>(6) - static_cast<T>(15)) + static_cast<T>(10)); |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |