function setup() {

  createCanvas(windowWidth, windowHeight);

  capture=createCapture(VIDEO);

  capture.size(1280,960);

  imageMode(CENTER)

}

​

​

function draw() {

  background(255,5,5);

  frameRate(60)

  image(capture, random(width), random(height))

  if (mouseIsPressed){

  filter(INVERT);

  }else{

    filter(THRESHOLD);

  }

}