Simplest tween with easing

Scripting
1

I have a slide out menu in a current application. That is the ONLY object that animates. I could use the LeanTween package which I own but thinking perhaps not necessary. Could anyone share the simplest tween code with easing for a slide out menu?

2

Well first you need ease methodsā€¦ hereā€™s a bunch of them that I wrote up for my library:

Note my code staticly caches the delegates for them to conserve on gc when passing them around in my tween engineā€¦

Anyways. You can then create a coroutine that passes in the start and end values over some durationā€¦ like so:

public IEnumerator EasePosition(Transform trans, Vector3 start, Vector3 end, float dur, Ease ease)
{
    float t = 0f;
    while(t < dur)
    {
        float sc = ease(t, 0f, 1f, dur);
        trans.position = Vector3.LerpUnclamped(start, end, sc);
     
        yield return null;
        t += Time.deltaTime;
    }
 
    trans.position = end;
}

We use LerpUnclamped, because some eases like to pass the goal and come backā€¦ like elastic. And regular lerp will clamp the value between 0-1ā€¦ which will lose the overshoot that the elastic effect gives.

2 Likes
3

Awesome. Thanks for this