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Optimized quaternion log function #554

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This commit is contained in:
Christophe Riccio 2016-09-24 10:46:46 +02:00
parent 9669cf4905
commit 0675da467a
2 changed files with 5 additions and 2 deletions
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4
glm/gtx/quaternion.inl
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@ -71,9 +71,9 @@ namespace glm
} }
else else
{ {
T QuatLen = sqrt(Vec3Len * Vec3Len + q.w * q.w);
T t = atan(Vec3Len, T(q.w)) / Vec3Len; T t = atan(Vec3Len, T(q.w)) / Vec3Len;
return tquat<T, P>(log(QuatLen), t * q.x, t * q.y, t * q.z); T QuatLen2 = Vec3Len * Vec3Len + q.w * q.w;
return tquat<T, P>(static_cast<T>(0.5) * log(QuatLen2), t * q.x, t * q.y, t * q.z);
} }
} }

3
readme.md
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@ -52,6 +52,9 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
## Release notes ## Release notes
#### [GLM 0.9.8.1](https://github.com/g-truc/glm/tree/0.9.8) - 2016-XX-XX #### [GLM 0.9.8.1](https://github.com/g-truc/glm/tree/0.9.8) - 2016-XX-XX
##### Improvements:
- Optimized quaternion log function #554
##### Fixes: ##### Fixes:
- Fixed GCC warning filtering, replaced -pedantic by -Wpedantic - Fixed GCC warning filtering, replaced -pedantic by -Wpedantic
- Fixed SIMD faceforward bug. #549 - Fixed SIMD faceforward bug. #549