Use animation controller instead of animator

[maurerdietmar]

Doing cleanups in the animation subdir, I still wonder if that Animator class
is usable at all. Unfortunately the documentation is quite bad, and the code does not lock
very mature.

So I went to the provided example examples/animator.rs and tried to implement it myself.
Turn out it is quite easy to implement the same functionality without the Animator class.

So what exactly is the advantage of that Animator class?

[richard-uk1]

git blame tells me that @rjwittams wrote the animation code originally. Maybe he would like to comment..?

[rjwittams]

I don't really get the PR.
The point of the Animator is to run lots of different animations at once on various things.
I used it more extensively for charts in druid-table.
I'll have to catch back up with things as I've not been involved for quite a few months

[maurerdietmar]

I don't really get the PR.

My point is that I can do the same thing without the Animator class. I rewrote your example to show that.
I will take a look at druid-table to see how its used there. BTW, please can you add a LICENSE/COPYRIGHT to that repository.

Here are a view more question:

• AnimationStorage: - wouldn't it easier to use a HashMap instead? Would you mind to document the purpose of that struct?
• AnimationStatusInternal: Why exactly did you add that delay feature (add_delay)? Instead, one could simply use a delayed curve (https://api.flutter.dev/flutter/animation/Interval-class.html)