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Optimized Quaternion vector rotation #205

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This commit is contained in:
Christophe Riccio
2014-05-23 23:09:32 +02:00
parent a2f4df2b1d
commit 4da58d88d4
2 changed files with 5 additions and 9 deletions
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13
glm/gtc/quaternion.inl
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@@ -302,16 +302,11 @@ namespace detail
detail::tvec3<T, P> const & v
)
{
T Two(2);
detail::tvec3<T, P> u(q.x, q.y, q.z);
detail::tvec3<T, P> uv(glm::cross(u, v) * q.w);
detail::tvec3<T, P> uuv(glm::cross(u, uv));
detail::tvec3<T, P> uv, uuv;
detail::tvec3<T, P> QuatVector(q.x, q.y, q.z);
uv = glm::cross(QuatVector, v);
uuv = glm::cross(QuatVector, uv);
uv *= (Two * q.w);
uuv *= Two;
return v + uv + uuv;
return v + (uv + uuv) * static_cast<float>(2);
}
template <typename T, precision P>