201212

let p;

let t = 0;

​

function setup() {

  createCanvas(800, 800);

  angleMode(DEGREES);

  noSmooth();

}

​

function draw() {

  randomSeed(frameCount / 150);

  p = get();

  for (let i = 0; i < 200; i++) {

    let x = random(-width * 0.5, width * 1.5);

    let y = random(-height * 0.5, height * 1.5);

    let angle = map(noise(x / 400, y / 400, t / 400), 0, 1, -180, 180)

    x += cos(angle) * t * 1;

    y += sin(angle) * t * 1;

    drawingContext.shadowColor = color(0, 0, 0, 50);

    drawingContext.shadowBlur = 20;

    noStroke();

    ellipse(x, y, t * 5);

  }

  t++;

  p.mask(get());

  image(p, 0, 0);

  if (t % 150 == 0) clear(), t = 0;

​

}