Lerping orthographic camera size jitters

Question

Hi When I try to Lerp the orthographic camera size it makes a nasty jitter at the end instead of a smooth Lerp. I have no idea why, so help would be much appreciated:) alt text

Here is my code:

 void Update()
     {
 
         StartCoroutine(Zoom(5,2,0.5f));
 
     }
 
     IEnumerator Zoom(float oldSize, float newSize, float time) 
     {
         
         float elapsed = 0;
      while (elapsed <= time)
      {
          float speed = 0.5f;
          elapsed += Time.deltaTime * speed;
          float t = elapsed / time;
  
          Camera.main.orthographicSize = Mathf.Lerp(oldSize, newSize, t);
          yield return null;
      }
          
     }

Answer 1

Best Answer

Answer by Dangerface · Nov 21, 2020 at 09:16 PM

So I kind of found the problem, just leaving this here for future reference.

It does not like to get the Lerp in the Update, Because I'm guessing it gets called a lot - hence the jitter. In my game I only need it to zoom in the beginning of a level, so the solution was just to put coroutine in Start. If you need it to happen mid game it should be set of by a one time trigger I guess :)

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Lerping orthographic camera size jitters

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