/** Empties the destination and copies the section of the source into the destination. */
public void execute() {
Trace.log(2, "executing CopyCommand");
Part newPart = source.extract(startSlot, endSlot);
Part.PartIterator i = newPart.iterator();
dest.empty();
while (i.hasNext()) dest.addUnit(i.next());
}
public Part fitPart(int freeSlots) {
if (freeSlots == 0) return null;
Part fitPart = this.copy();
while (fitPart.size() > freeSlots) {
Part scaledPart = new Part();
Part.PartIterator i = fitPart.iterator();
while (i.hasNext()) {
Unit unit = i.next();
if (unit.getRhythmValue() != 1) {
Trace.log(3, "in fitPart, setting rhythmValue");
unit.setRhythmValue(unit.getRhythmValue() / 2);
if (unit.getRhythmValue() <= MIN_RHYTHM_VALUE) return null;
}
scaledPart.addUnit(unit);
}
fitPart = scaledPart;
}
return fitPart;
}