Align Camera with different Coordinate System and Track Actor

Development Programming & Scripting
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Funnily enough I have found a relatively good solution already for slightly different context.

SoSeductive69_Tv FindLookAtRotation

Rough Solution:

  1. I acquired the NewCamera->GetActorUpVector() when the camera was created which uses the UeRotation as it was spawned previously mentioned and stored it on the camera class.
  2. Then I used the UpVector stored which is reflective of the UeRotation on spawn which points upwards from the world surface as the upDirection in the MyLookRotation function.
  3. The lookAt as the Tracking Actor location vector.
  4. And it returns the needed FRotator you need for the FQuat::Slerp Quat2 param.

Visually it looks like this:

FRotator LookTo = MyLookRotation(ActorToTrack->GetActorLocation(), InitUpVector);
FRotator LookAtRotaion = FQuat::Slerp(GetActorRotation().Quaternion(), LookTo.Quaternion(), FMath::Min(1.0f, DeltaTime)).Rotator();
SetActorRotation(LookAtRotaion);

What I have yet to fully understand is the Math and if some of the existing functions in UnrealEngine could be used instead.

Would like to know If anyone else found a more refined solution?