Function parseRotateMode

parseRotateMode(argument: string | undefined): RotateMode
The sampling ~ROTATE(degrees, mode) asks for, from its second argument: linear (or smooth, since either word is what an author reaches for) interpolates, anything else - including nothing at all - takes the fast nearest-neighbour path. Exported beside the other path parsers for the same reason they are: a game that renders ~ROTATE through its own canvas pipeline still wants the same two names to mean the same two things.
Parameters
- argument: string | undefined
Returns RotateMode
Example
```
import { parseImagePath, imageModifier, parseRotateMode } from '@datamoc/mw_games/two-d/render';

const rotate = imageModifier(parseImagePath('tile.png~ROTATE(60,linear)'), 'ROTATE');
parseRotateMode(rotate?.args[1]); // 'linear'
parseRotateMode(undefined); // 'nearest'
```
- Defined in src/two-d/render/ImageModifiers.ts:79