Core/Quaternion: Fix Inverse method

ChangeLog.md

@@ -85,6 +85,7 @@ Nazara Engine:
 - Fixed Sound copy which was not copying looping state
 - Fixed Billboard bounding volume
 - Fixed Directory::GetResultSize and Directory::IsResultDirectory on Posix systems
+- Fixed Quaternion::Inverse which was not correctly normalizing quaternions
 
 Nazara Development Kit:
 - Added ImageWidget (#139)

include/Nazara/Math/Quaternion.inl

@@ -220,7 +220,7 @@ namespace Nz
 		T norm = SquaredMagnitude();
 		if (norm > F(0.0))
 		{
-			T invNorm = F(1.0) / norm;
+			T invNorm = F(1.0) / std::sqrt(norm);
 
 			w *= invNorm;
 			x *= -invNorm;