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Animation Pose Snapshot Live Training - New Facing Direction Calculation

Hello,

I followed the Pose Snapshot Live Training https://youtube.com/watch?v=nkj6PAbGYtM and I found that the way to determine the Facing Direction sometimes lead to false results:
[video]https://streamable.com/kdz8w[/video]

I really dont fully understand the math behind it but I found that the Up Vector gave positive Z values when facing up and negative ones when facing down:
[video]https://streamable.com/l6akr[/video]

So I changed the Calculate Facing Direction function a bit:

https://forums.unrealengine.com/filedata/fetch?type=thumb&filedataid=147784

Maybe someone might find this useful.