Genuary - Shadows - OpenProcessing

mySketch
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var counter;
function setup() {
  size = min(windowWidth, windowHeight);
  createCanvas(size, size);
​
  drawingContext.shadowOffsetX = random(0);
  drawingContext.shadowOffsetY = random(-size / 2, size / 2);
  drawingContext.shadowBlur = 0;
  drawingContext.shadowColor = "rgb(0,0,0)";
  noStroke();
  background(255);
  rectMode(CENTER);
  counter = 0;
  
  // -------------------- GRID
  rS = size / int(random(15, 20)); // square size
  round = 0;
  sBW = 0; // the space between the squares
​
  colors = ['#D5D6C8', '#5A5360', '#E6E4CD', '#D2D7BA'];
  squareColor = int(random(0, colors.length));
  fill(colors[squareColor]);
​
  gridNumX = int(random(6, 12));
  gridNumY = int(random(6, 12));
​
  translate(
    (size / 2) - (rS * gridNumX) / 2 - rS,
    (size / 2) - (rS * gridNumY) / 2 // 4 ili 6
  );
​
  // layer 1
  for (let x = 0; x < gridNumX; x += 1) {
    for (let y = 0; y < gridNumY; y += 1) {
      xPos = x * rS;
      yPos = y * rS;
​
      push();
      stroke("#000000");
      rect(xPos + sBW, yPos + sBW, rS - sBW, rS - sBW, round);
      pop();
    }
  }
  // ------------------------ GRID
}
​
function draw() {
  translate(size / 2, size / 2);
  for (i = 0; i < 10; i++) {
    fill(240);
    
    if(random(1) < 0.005){
    circle(
      0,
      random(100),
      size / random(size) + random(600),
      size / random(size) + random(600)
    );
    }
    
    stroke(1);
    noFill();
    circle(
      0,
      random(-300, 300),
      size / random(size, size / 20),
      size / random(size, size / 20)
    );
    fill(240);
    circle(
      0,
      random(100),
      size / random(size, size / 50),
      size / random(size, size / 50)
    );
  }
  
  line(-size / 2, 0, size / 2, 0);
  
​
  counter++;
​
  if (random(1) < 0.2) {
    push();
    textSize(32);
    noStroke();
    fill(0);
    text(int(random(100)), 10, random(-300, 300));
    pop();
  }
​
  if (counter === 30) {
    noLoop();
  }
}
​
// **************************
// *       Save png         *
// **************************
​
function keyTyped() {
  if (key == "s" || key == "S") save("Title" + int(random(0, 1000)) + ".png");
}
​