function setup() {

  createCanvas(400, 400);

  background(220);

  drawBuilding();

}

​

function drawBuilding() {

  let cols = 3; // windows in  row

  let rows = 3; // Number  windows in  column

  let windowWidth = 60;

  let windowHeight = 80;

  let spacingX = 100;

  let spacingY = 100;

  let startX = 50;

  let startY = 50;

​

  for (let i = 0; i < cols; i++) {

    for (let j = 0; j < rows; j++) {

      let x = startX + i * spacingX;

      let y = startY + j * spacingY;

      drawWindow(x, y, windowWidth, windowHeight);

    }

  }

}

​

function drawWindow(x, y, w, h) {

  //  frame

  fill("brown");

  rect(x, y, w, h);

​

  //  panes

  fill("black");

  rect(x + 5, y + 5, w / 2 - 10, h - 10);

  rect(x + w / 2 + 5, y + 5, w / 2 - 10, h - 10);

​

  // top/bottom accents

  fill("white");

  rect(x, y - 5, w, 5); // Top 

  rect(x, y + h, w, 5); // Bottom

}

​

function mousePressed() {

  save("MQ Apt Windows.png");

}

​