ground dataspace G {
  Syndicate.UI.spawnUIDriver();
  Syndicate.Timer.spawnTimerDriver();

  spawn {
    var ui = new Syndicate.UI.Anchor();
    field this.angle;
    field this.handX;
    field this.handY;

    assert ui.html('#clock',
                   '<svg width="300px" viewBox="0 0 100 100">'+
                   '<circle fill="#0B79CE" r=45 cx=50 cy=50 />'+
                   '<line stroke="#023963" x1=50 y1=50 x2='+this.handX+' y2='+this.handY+' />'+
                   '</svg>')
      when (typeof this.angle === 'number');

    on message Syndicate.Timer.periodicTick(1000) {
      this.angle = ((((Date.now() / 1000) % 60) / 60) - 0.25) * 2 * Math.PI;
      this.handX = 50 + 40 * Math.cos(this.angle);
      this.handY = 50 + 40 * Math.sin(this.angle);
    }
  }
}
