​

function setup() {

  createCanvas(400, 400);

  noLoop(); // prevents the draw function from getting called automatically

}

​

function draw() {

  background(0);

  fill(255);

  circle(x, height/2, 50);

  // download the current canvas as an image

  saveCanvas('frame.png');

}

​

// this example is making use of keyPressed for demonstration

// purposes - with ComfyUI, you'd do the same from within the

// callback function

​

function keyPressed() {

  x = x + 10;

  redraw();  // call the draw function manually

}