void setup() {
  size(300,300);
  noLoop();
  background(0);
  fill(255, 50);
  strokeWeight(1);
  smooth();
}

void draw() {
  pinheads(20, 190);
  pinheads(90, 150);
  pinheads(190, 20);
  pinheads(150, 90);
}

void pinheads(int x, int y) {
  ellipse(x, y, x%y, x%y);
  ellipse(y, x, x%y, x%y);
  ellipse(300-x, 300-y, x/5, x/5);
  ellipse(300-y, 300-x, x/5, x/5);

}