AlphaTab.Audio.Generator.MidiFileGenerator.GetBrushInfo C# (CSharp) Метод

        private int[] GetBrushInfo(Beat beat)
        {
            var brushInfo = new int[beat.Voice.Bar.Staff.Track.Tuning.Length];

            if (beat.BrushType != BrushType.None)
            {
                //
                // calculate the number of

                // a mask where the single bits indicate the strings used
                var stringUsed = 0;

                for (int i = 0, j = beat.Notes.Count; i < j; i++)
                {
                    var n = beat.Notes[i];
                    if (n.IsTieDestination) continue;
                    stringUsed |= 0x01 << (n.String - 1);
                }

                //
                // calculate time offset for all strings
                if (beat.Notes.Count > 0)
                {
                    int brushMove = 0;
                    var brushIncrement = GetBrushIncrement(beat);
                    for (int i = 0, j = beat.Voice.Bar.Staff.Track.Tuning.Length; i < j; i++)
                    {
                        var index = (beat.BrushType == BrushType.ArpeggioDown || beat.BrushType == BrushType.BrushDown)
                                    ? i
                                    : ((brushInfo.Length - 1) - i);
                        if ((stringUsed & (0x01 << index)) != 0)
                        {
                            brushInfo[index] = brushMove;
                            brushMove = brushIncrement;
                        }
                    }
                }
            }

            return brushInfo;
        }