Function openAnimationFrame

openAnimationFrame(
    kind: OpenAnimationKind,
    progress: number,
    closing?: boolean,
): { alpha: number; offset: number; scale: number }
What a window opening (or closing, run backwards) looks like at progress: its scale, opacity and how far it is still pushed down by a slide. Closing never overshoots.
Parameters
- kind: OpenAnimationKind
- progress: number
- closing: boolean = false
Returns { alpha: number; offset: number; scale: number }
Example
```
import { openAnimationFrame } from '@datamoc/mwg/two-d/render';

console.log(openAnimationFrame('pop', 0).scale); // 0
console.log(openAnimationFrame('pop', 1).scale); // 1
console.log(openAnimationFrame('slide', 0.5).offset > 0); // true: still sliding up
```
- Defined in src/two-d/render/SceneTransition.ts:495