let pixelsAsColors = [];

​

function preload() {

  img = loadImage('sufjan.jpg');

}

​

function setup() {

  img.resize(img.width/2, img.height/2);

  createCanvas(img.width, img.height);

  image(img, 0, 0);

  copy(img, 0, 0, width/2, height/2, width/2, 0, width/2, height);

}

​

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​

​