public Integer getMeasureOf(Rational r) {
TimeSignature ts = getObjectAt(r);
Rational lastTSChange = _data.lowerKey(r);
// Calculate the measures since the last time signature change
Integer measures =
Double.valueOf(Math.ceil((r.minus(lastTSChange)).times(new Rational(1, ts.TOP)).toDouble()))
.intValue();
// Go backwards through underlying data to count all measures defined in the piece (ideally
// there are none before 0?)
for (Map.Entry<Rational, TimeSignature> e :
_data.headMap(lastTSChange, false).descendingMap().entrySet()) {
measures =
measures
+ Double.valueOf(
Math.ceil(
(lastTSChange.minus(e.getKey()))
.times(new Rational(1, e.getValue().TOP))
.toDouble()))
.intValue();
lastTSChange = e.getKey();
}
return measures;
}
// bin search based square root computation,
// works for rationals in the range [0,2147483647]
public Rational root() throws IllegalArgumentToSquareRootException {
Rational low = new Rational(0, 1);
// Max Int value is 2147483647, square root is 46341
// Rational high = new Rational(46341,1);
Rational high = new Rational(46340, 1);
if (this.isLessThan(low) || !this.isLessThan(high)) {
throw new IllegalArgumentToSquareRootException(this);
}
System.out.println("46341* 46341 = " + (46341 * 46341));
System.out.println("46340* 46340 = " + (46340 * 46340));
Rational half = new Rational(1, 2);
Rational midpoint = (low.plus(high)).times(half);
Rational tmp = null;
while (!high.minus(low).abs().isLessThan(TOLERANCE)) {
System.out.println("low high: " + low + " " + high);
System.out.println("square of midpoint is: " + midpoint.times(midpoint));
if (midpoint.times(midpoint).isLessThan(this)) {
tmp = new Rational(midpoint);
midpoint = high.plus(midpoint).times(half);
low = tmp;
} else {
tmp = new Rational(midpoint);
midpoint = low.plus(midpoint).times(half);
high = tmp;
}
}
return midpoint;
}
public Rational getBeatOf(Rational r) {
TimeSignature ts = getObjectAt(r);
if (ts == null) {
return null;
}
Rational meterEstablishedAt = _data.floorKey(r);
if (meterEstablishedAt == null) return null;
Rational newResult = r.minus(meterEstablishedAt).mod(new Rational(ts.TOP)).plus(Rational.ONE);
return newResult;
// Rational n = r.minus(meterEstablishedAt);
// Integer i = Double.valueOf( n.toDouble() ).intValue() % ts.TOP;
// Rational result = n.minus( new Rational(ts.TOP, 1).times(new Rational(i, 1)) );
// return result;
}
public void subtract() {
operand_0 = operand_1.minus(operand_0);
operand_1 = new Rational();
}
/** Aftrekking van operand 1 en operand 2 */
public void subtract() {
operand_0 = operand_1.minus(operand_0);
operand_1 = new Rational();
processEvent(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null));
}
