​

let white = false;

​

function setup() {

  createCanvas(400, 400);

  background(255);

  addEffects(

    godrays({samplerNum: -1, lightPos: nMouse(), density: 0.5 }),

    channel(-1, op(pos(), "+", op(get2Comp(fColor(), "rg"), "*", op(nMouse(), "-", 0.5))))

  );

}

​

function draw() {

  if (white) {

    colorMode(RGB);

    fill(255, 255, 255);

  } else {

    colorMode(HSB, 100);

    fill(Math.random() * 100, 100, 100);

  }

  noStroke();

  ellipse(mouseX, mouseY, 20 + (r = 60 * Math.random()), 20 + r);

}

​

function mouseClicked() {

  white = !white;

}

​