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fix: glm::angle() discards the sign of result for angles in range (2*pi-1, 2*pi)

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EZForever 2020-10-29 13:50:31 +08:00
parent 2bb0fb3999
commit a66b782134
1 changed files with 4 additions and 1 deletions
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5
glm/ext/quaternion_trigonometric.inl
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@ -7,7 +7,10 @@ namespace glm
{ {
if (abs(x.w) > cos_one_over_two<T>()) if (abs(x.w) > cos_one_over_two<T>())
{ {
return asin(sqrt(x.x * x.x + x.y * x.y + x.z * x.z)) * static_cast<T>(2); T const a = asin(sqrt(x.x * x.x + x.y * x.y + x.z * x.z)) * static_cast<T>(2);
if(x.w < static_cast<T>(0))
return two_pi<T>() - a;
return a;
} }
return acos(x.w) * static_cast<T>(2); return acos(x.w) * static_cast<T>(2);