AlphaTab.Rendering.Utils.BeamingHelper.CanJoin C# (CSharp) Method

        private static bool CanJoin(Beat b1, Beat b2)
        {
            // is this a voice we can join with?
            if (b1 == null || b2 == null || b1.IsRest || b2.IsRest || b1.GraceType != GraceType.None || b2.GraceType != GraceType.None)
            {
                return false;
            }

            var m1 = b1.Voice.Bar;
            var m2 = b1.Voice.Bar;
            // only join on same measure
            if (m1 != m2) return false;

            // get times of those voices and check if the times
            // are in the same division
            var start1 = b1.Start;
            var start2 = b2.Start;

            // we can only join 8th, 16th, 32th and 64th voices
            if (!CanJoinDuration(b1.Duration) || !CanJoinDuration(b2.Duration))
            {
                return start1 == start2;
            }

            // TODO: create more rules for automatic beaming
            var divisionLength = MidiUtils.QuarterTime;
            switch (m1.MasterBar.TimeSignatureDenominator)
            {
                case 8:
                    if (m1.MasterBar.TimeSignatureNumerator % 3 == 0)
                    {
                        divisionLength += MidiUtils.QuarterTime / 2;
                    }
                    break;
            }

            // check if they are on the same division
            var division1 = ((divisionLength + start1) / divisionLength) | 0;
            var division2 = ((divisionLength + start2) / divisionLength) | 0;

            return division1 == division2;
        }