What is alternative for FindLookAtRotation?

Development Cinematics & Media
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1

I’m working on a camera function in c++. I want to point the camera on component of my pawn (it’s not exactly main mesh location). So I just need to find rotation between two actors.
FindLookAtRotation was promising but I found strange jitter occurring during movement with high speed. The problem is depending on frame rate. In 120 fps jitter is almost unheeded, in 30 there’s a mess. This may by related with whole time physics simulation on pawn, so values for interpolation may become unstable during movement. I hope you can understand me :slight_smile:
Here’s what i’m talking about. I’m looking for some alternative calculations to set rotation on pawns componenent.

 CameraCurrentLocation = Camera->GetComponentLocation();

  CameraTargetLocation.X = ConeSpringArm->GetComponentLocation().X + 800;
  CameraTargetLocation.Y = FMath::InterpEaseIn(CameraTargetLocation.Y, ZoneSet.Y, DeltaTime, 1);
  CameraTargetLocation.Z = FMath::InterpEaseIn(CameraTargetLocation.Z, ZoneSet.Z, DeltaTime, 1);
    
  FRotator CameraRotation = FindLookAtRotation(CameraCurrentLocation, CameraTargetLocation);
  Camera->SetWorldRotation(CameraRotation);
2

Any chance you’re using a spring arm with lag for your camera? This can cause a lot of jitter at times…shot in the dark!

3

Thanks for tip. I turned off all lags on spring arm, but with no results. There’s something else.

4

You’re not interpolating the camera rotation. Is that intentional? I imagine that could cause a lot of popping.