untitled

color bg = #ffffff;
color s = #000000;
ArrayList bricks = new ArrayList();
ArrayList bricks2 = new ArrayList();

void setup() {

  size(400, 400);
  background(bg);
  stroke(s);
  strokeWeight(3);

  rectMode(CENTER);

  int y = 0;
  int h = 2;
  float w = 200;
  float theta = 0;

  while (y<height+50) {
    y += h;
    Brick brick = new Brick(y, h, theta, 300, 1);
    bricks.add(brick);
    Brick brick2 = new Brick(y, h, theta+PI/4, 250, 2);
    bricks2.add(brick2);
    h += 2;
    theta += TAU/25;
  }
}

void draw() {
background(bg);
  for (int i=0; i<bricks.size();i++) {
    Brick brick = (Brick) bricks.get(i);
    brick.run();
    Brick brick2 = (Brick) bricks2.get(i);
    brick2.run();
  }

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

  Brick(float _y, float _h, float _theta, float _w, float _cat) {
    y = _y;
    h = _h;
    w = _w;
    theta = _theta;
    cat = _cat;
  }

  void run() {
    move();
    display();
  }


  void move() {
    scalar = map(sin(theta*2), -1, 1, .5, 1.5);
    theta += 0.0523;
  }


  void display() {
    if (cat==1) {
      fill(0);
    }
    else {
      fill(255);
    }
    rect(width/2, y-h/2, ((w-5*h)*scalar), h);
  }
}