public BarHelpers(Bar bar)
{
BeamHelpers = new FastList<FastList<BeamingHelper>>();
BeamHelperLookup = new FastList<FastDictionary<int, BeamingHelper>>();
TupletHelpers = new FastList<FastList<TupletHelper>>();
BeamingHelper currentBeamHelper = null;
TupletHelper currentTupletHelper = null;
if (bar != null)
{
for (int i = 0, j = bar.Voices.Count; i < j; i++)
{
var v = bar.Voices[i];
BeamHelpers.Add(new FastList<BeamingHelper>());
BeamHelperLookup.Add(new FastDictionary<int, BeamingHelper>());
TupletHelpers.Add(new FastList<TupletHelper>());
for (int k = 0, l = v.Beats.Count; k < l; k++)
{
var b = v.Beats[k];
var newBeamingHelper = false;
// if a new beaming helper was started, we close our tuplet grouping as well
if (!b.IsRest)
{
// try to fit beam to current beamhelper
if (currentBeamHelper == null || !currentBeamHelper.CheckBeat(b))
{
if (currentBeamHelper != null)
{
currentBeamHelper.Finish();
}
// if not possible, create the next beaming helper
currentBeamHelper = new BeamingHelper(bar.Staff.Track);
currentBeamHelper.CheckBeat(b);
BeamHelpers[v.Index].Add(currentBeamHelper);
newBeamingHelper = true;
}
}
if (b.HasTuplet)
{
// try to fit tuplet to current tuplethelper
// TODO: register tuplet overflow
var previousBeat = b.PreviousBeat;
// don't group if the previous beat isn't in the same voice
if (previousBeat != null && previousBeat.Voice != b.Voice) previousBeat = null;
// if a new beaming helper was started, we close our tuplet grouping as well
if (newBeamingHelper && currentTupletHelper != null)
{
currentTupletHelper.Finish();
}
if (previousBeat == null || currentTupletHelper == null || !currentTupletHelper.Check(b))
{
currentTupletHelper = new TupletHelper(v.Index);
currentTupletHelper.Check(b);
TupletHelpers[v.Index].Add(currentTupletHelper);
}
}
BeamHelperLookup[v.Index][b.Index] = currentBeamHelper;
}
currentBeamHelper = null;
currentTupletHelper = null;
}
}
}
