Function vec2Rotate

vec2Rotate(v: Vec2, angle: number): Vec2
Rotate a vector by an angle in radians (counter-clockwise in standard math coords).
Parameters
- v: Vec2
- angle: number
Returns Vec2
Example
```
import { degToRad } from './math';
const rotated = vec2Rotate(vec2(1, 0), degToRad(90)); // ≈ { x: 0, y: 1 }
```
- Defined in math.ts:151