REDy

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

  frameRate(40);

  noStroke();

  var x;

}

​

​

function draw() {

  drawTarget(mouseX + random(-10,10), mouseY+random(-10,10), random(30,200), random(60,100));

}

​

function drawTarget(xloc, yloc, size, num) {

  const grayvalues = 255 / num;

  x = random(30,50);

  const steps = size / num;

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

    fill(i*grayvalues,0,40,x);

    ellipse(xloc, yloc, size - i * steps, size - i * steps);

  }

}

​

​