​

​

function setup() {

  createCanvas(680, 480);

  cam = createCapture(VIDEO);

  cam.hide();

}

​

function draw() {

  background(220);

  // image(cam, 0, 0);

  cam.loadPixels();

  for (let y = 0; y < height; y++) {

    let p = y * width + width / 2;

    let i = 4 * p

    let r = cam.pixels[i];

    let g = cam.pixels[i + 1];

    let b = cam.pixels[i + 2];

    let a = cam.pixels[i + 3];

    let c = [r, g, b, a];

    stroke(c);

    point(width / 2, y);

  }

}

​