Function rayIntersectNormalCircle

Normal at ray intersection with a circle

rayIntersectNormalCircle(c, r, p, v): Vec2
Parameters
- c: Vec2
  center of circle
- r: Num
  radius of circle
- p: Vec2
  A point
- v: Vec2
  A vector
Returns Vec2
The unit normal at the intersection point
- Defined in bloom/src/core/computation.ts:1958