/**
* Return the next downbeat (beat 1) after the given point
*
* @param r
* @return
*/
public Rational nextDownBeat(Rational r) {
Rational meterEstablishedAt = _data.floorKey(r);
TimeSignature ts = _data.get(meterEstablishedAt);
Rational result = meterEstablishedAt;
Rational inc = Rational.get(ts.TOP);
while (result.compareTo(r) <= 0) {
result = result.plus(inc);
}
// Look ahead - if a new Time Signature overrode our
// old time signature before it completed a measure
// we need to compensate for that.
Rational higher = _data.higherKey(r);
if (higher != null && result.compareTo(higher) > 0) result = higher;
return result;
}
