let slider;

​

function setup() {

  createCanvas(600, 600);

  capture = createCapture(VIDEO);

  capture.size(600, 600);

  noStroke();

  dim = height/4;

  colorMode(RGB, 180, 180, 100,50);

  ellipseMode(RADIUS);

​

}

​

function draw() {

  background(255,255,255,10);

  ellipse(mouseX, mouseY, 20, 20);

   for (var x = 1; x <= width; x+=dim) {

    drawGradient(x, height/4);

  } 

  capture.loadPixels();

  let size = round(constrain(mouseX/ 8, 6, 32));

  for (let y = 0; y < height; y += size) {

    for (let x = 0; x < width; x += size) {

      let a = y * width + x;

      let c = (255 - capture.pixels[a * 4]) / 300;

      let s = size * c;

     ellipse(x, y, s, s);

    }

  }

}

​

function drawGradient(x, y) {

  var radius = dim/2;

  var h = random(0, 600);

  for (r = radius; r > 0; --r) {

    fill(h, 90, 90);

​

    h = (h + 1) %180;

  }

}