static void animateBounds(final JComponent c, final Rect a, final Rect b) {
  animateBounds(c, a, b, 1);
}

static void animateBounds(final JComponent c, final Rect a, final Rect b, final double seconds) {
  final long startTime = sysNow();
  awtEvery(c, 20, func {
    double s = msToSeconds(sysNow()-startTime)/seconds;
    if (s >= 1) {
      setBounds(c, b);
      false;
    }
    setBounds(c, blendRects(a, b, s));
    null;
  });
}