Lerp UI Color outside update method?

Question

I'm able to Lerp the color of a UI panel within the Update method. However I'd like to trigger behavior a single time when needed. If I put it in a method and call it it only changes for a brief time and doesn't fully complete. I could probably set a bool flag within the update method but that seems sloppy.

Answer 1

Using a Coroutine gives the desired effect.

IEnumerator ChangeColorTest()
    {
        for (var i = lerpDuration; i >= 0; i -= 0.1f)
        {
            UIPanel.color = Color.Lerp(startColor, endColor, Time.time / lerpDuration);

            yield return new WaitForSeconds(0.1f);
        }
    }

I'd like the color transition to be smoother but this might be how Coroutines work.