LeanTween "from-to" value animation

Question

I am using LeanTween as the tween plugin of my Unity Application. But it's frustrating not having a "from-to" type tweening. For an example, I want

//Set initial alpha (from 1f) before animation
var tempColor = forceRing.color;
tempColor.a = 1f;
forceRing.color = tempColor;
//Tween alpha (to 0f)
LeanTween.alpha(forceRing.gameObject, 0f, 0.7f)

to look like this.

//Tween alpha from 1f to 0f;
LeanTween.alpha(forceRing.gameObject, 1f, 0f, 0.7f)

I couldn't find this functionality in LeanTween. What is the best way to achieve this, without writing wrappers or extensions for each tween type on my own?

Answer 1

LeanTween uses the Method chaining pattern to configure tweens.

In your case recommend write the code like this

LeanTween.alpha(forceRing.gameObject, 
    to: 0f, 
    time: 0.7f
).setFrom(1.0f);

You can even chain more (optional) configurations (e.g. setting a delay or different ease type) that way:

LeanTween.alpha(forceRing.gameObject, 
    to: 0f, 
    time: 0.7f
.setFrom(1.0f).setDelay(0.5f).setEase(LeanTweenType.easeInSine);