carpet

Square[] squares;
int elem, unit;
color f;

void setup() {
  size(500, 500);
  background(255);

  int counter=0;
  int i=0;
  float div = 20;
  float theta=0;
  unit = int(width/div);
  elem = int(sq(div-2));
  squares = new Square[elem];

  for (int y = unit; y<height-unit; y +=unit) {
    for (int x = unit; x<width-unit; x +=unit) {
      squares[i] = new Square(float(x), float(y), theta, random(3));
      i++;
      theta += TAU/elem;
    }
  }
}

void draw() {
  background(#202020);
  for (int i=0; i<squares.length; i++) {
    squares[i].display();
  }

  if (frameCount % 3 == 0 & frameCount<121) saveFrame("image-####.gif");
}
class Square {
  float x, y, w, h, r, theta;

  Square(float _x, float _y, float _theta, float _r) {
    x = _x;
    y = _y;
    h = unit;
    theta = _theta;
    r = _r;
  }

  void display() {

    w = map(sin(theta), -1, 1, 5, unit-5);
    if (r<2.5) {
      stroke(#777777);
      noFill();
    }
    else {
      fill(#FCD300);
      noStroke();
    }

    //noFill();
    rect(x, y, w, w,0);

    theta -= 0.0523;
  }
}