Perlin Noise Particles

CircleParts.js

// loop: -------------------------------

fade(10)
// displace(-1,0)
stroke(255, 80)
beginShape(POINTS)
$npsys.update((x, y) => {
	if (dist(x, y, width / 2, height / 2) < 300 && x < width / 2) vertex(x, y)
}).nSize(0.01).aVel(osc() * 5).nVel(5)
endShape()

if (pulse(520)) {
	bg(0)
	$npsys.resetDir()
}
mirrorY()

// aux: ----------------------------------

snip('noise', () => {
	$npsys = new NPSys()
	for (let i = 0; i < 8000; i++) {
		$npsys.addObj(new NP(random(width), random(height)))
	}
})