public GrandStaffLedgerLines ComputeLedgerLines(StaffPosition notePosition)
{
if (notePosition == null)
{
return(GrandStaffLedgerLines.Absent);
}
var offset = notePosition.VerticalOffset;
var lines = (offset.Abs() / 2 - 2).LimitFromBottom(0);
var ledgerLines = LedgerLines.CreateSingle(lines, top: offset > 0);
return(GrandStaffLedgerLines.CreateSingle(ledgerLines, treeble: notePosition.Clef == Clef.Treeble));
}
GrandStaffLedgerLines Combine(GrandStaffLedgerLines ledgerLines, StaffPosition position)
{
var otherLedgerLines = ComputeLedgerLines(position);
return(ledgerLines.Combine(otherLedgerLines));
}