"swimmers"

gistfile1.java

float t, r1, r2, d, time;
float q = 0.001;

void setup() {
  smooth(8);
  size(500, 500);
  fill(240); 
  noStroke();
}

void draw() {
  time = frameCount/48.0;
  background(0);
  pushMatrix();
  translate(width/2, height/2 + 12);
  rotate(QUARTER_PI);
  for (int a=1000; a>0; a--) {
    t = time - q*a;
    pushMatrix();
    rotate(TWO_PI*t/6);
    for (int i=0; i<6; i++) {
      r1 = map(cos(TWO_PI*t + PI*(i%2)), -1, 1, 80, 150);
      r2 = map(-cos(TWO_PI*t), -1, 1, 2, 60);
      pushMatrix();
      rotate((i+t)*TWO_PI/6);
      translate(r1, 0);
      for (int j=0; j<3; j++) {
        pushMatrix();
        rotate((j+2*t)*TWO_PI/3);
        translate(r2, 0);
        d = 12*pow(.993, a);
        fill(255*pow(.997, a));
        ellipse(0, 0, d, d);
        popMatrix();
      }
      popMatrix();
    }
    popMatrix();
  }
  popMatrix();
  
  saveFrame("f##.gif");
  if(frameCount==48)  exit();
}