transmogrify

float h, w, theta;
int num = 20;

void setup() {
  size(500, 500);
  ellipseMode(CORNER);
  noStroke();
  fill(#202020,10);
  background(255);
}

void draw() {
  w = 50;
  h = map(sin(theta), -1, 1, w, 200);
  translate(width/2, height/2);
  for (int i=0; i<num; i++) {
    pushMatrix();
    rotate((TWO_PI/num)*i);
    ellipse(-w/2, 0, w, h);
    popMatrix();
  }
  filter(DILATE);
  theta += 0.0523;
}