Function cross

test/types/webgl-pixels.ts:319–321

(a: p5.Vector, b: p5.Vector, o: p5.Vector)

}

const cross = (a: p5.Vector, b: p5.Vector, o: p5.Vector) => {
  return (a.x - o.x) * (b.y - o.y) - (a.y - o.y) * (b.x - o.x)
}

function convexHull(points: p5.Vector[]) {
  points.sort(comparison)