Could it rotate itself?

[daedalus1984]

How can I achieve to make it rotate automatically?

[469090194]

year, you can write:
var before = null;
requestAnimationFrame(function animate(now) {
var c = map.getPosition();
var elapsed = before? now - before: 0;
before = now;
map.setCenter([c[0], c[1] + 0.1*(elapsed/30)]);
requestAnimationFrame(animate);
});