Eclipse

function setup() {

  createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(0,0,0,random(90,100));

  if (mouseY < windowHeight/2)

  {

  stroke(255, 255, 255);

  strokeWeight(random(0,10))

  fill(0,0,0,50)

  ellipse(windowWidth/2,windowHeight/2,200,200);

  stroke(255, 255, 0);

  strokeWeight(random(0,10))

  fill(0,0,0,50)

  ellipse(windowWidth/2,windowHeight/2,200,200);

  }

}