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.

A tweener like DoTween or a coroutine will work. Have you tried either? — Sidar, Mar 11 '19 at 18:48

score 0 · Answer 1 · answered Mar 11 '19 at 19:17

0

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.

answered Mar 11 '19 at 19:17

Pyreal

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"this might be how Coroutines work" nope. You're waiting a tenth of a second (ie. 3-6 frames) between iterations instead of updating the colour every frame (which you can do with yield return null). You're also using the wrong calculation of the blend parameter to adjust for time. – DMGregory Mar 11 '19 at 19:23

Lerp UI Color outside update method?

1 Answers1