simple arc motion

const color0 = [60, 9, 13, 100];

const color1 = [40, 4, 54, 100];

const color2 = [45, 2, 86, 100];

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  colorMode(HSB);

}

​

function zeroToOneWave(x) {

  return 0.5 * (sin(TAU * x - PI / 2) + 1);

}

function draw() {

  background(color0);

  noFill();

  const angle = zeroToOneWave(frameCount/100) * TWO_PI;

  for (let x = 1; x < 6; x++) {

    if (x % 2 === 0) {

      stroke(color2);

    } else {

      stroke(color1);

    }

    const s = width / 2 / x;

    arc(width / 2, height / 2, s, s, -angle, 0);

  }

}