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Question by alexguerin · May 17, 2014 at 11:56 AM · cameralerpjitter

Camera Lerp Jitter

I've been trying unsuccessfully to remove the jitter from the camera w$$anonymous$$ch is following a moving player. The player is moved by Vector3.MoveTowards. The camera Lerps to get a nice lag as if the player has outrun the camera.

The following code is in LateUpdate and is attached to the camera.

         if (!player.rotating) 
         {
             direction += -target.up * height;
             newPos = target.position - (direction * distance);
         }
 
         transform.position = Vector3.Lerp(transform.position, newPos, Time.deltaTime * moveSpeed); 
         Quaternion wantedRotation = Quaternion.LookRotation(target.position - transform.position, target.up);
         transform.rotation = Quaternion.Slerp(transform.rotation, wantedRotation, Time.deltaTime * rotationSpeed);

T$$anonymous$$s code does work as intended but causes a very noticeable jitter. I have searched a lot over the last few weeks for a solution but none have worked.

I've tried:

  • C$$anonymous$$ld camera to player - t$$anonymous$$s works however there is no lag (w$$anonymous$$ch I want).

  • C$$anonymous$$ld camera and adjust the localPosition to mimic lag. T$$anonymous$$s instead looks as if the camera has moved backwards rather than slowed.

  • Lerp from/to a set start and end point - no noticeable difference.

  • Used SmoothDamp instead of Lerp - works only at slow speeds. The faster the camera moves, the more it begins to jitter.

  • Removed the RigidBody from the player/change interpolate settings - no difference.

  • Tried in Update, LateUpdate & FixedUpdate - no difference.

Have I missed somet$$anonymous$$ng or is it normally t$$anonymous$$s difficult to get a moving camera to following a moving object?

Any ideas would be welcomed.

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avatar image alexguerin · May 18, 2014 at 01:49 AM 0
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It's starting to look like it isn't possible with Unity. I simply made the camera move forward and not follow anything and it still jerks. It seems a camera can only directly be moved, using Lerp simply doesn't work.

I've really run out of things to try now.

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