CanvasCommon.CanvasSegment.MergeSegments C# (CSharp) Метод

        public static void MergeSegments(ref List<CanvasSegment> segments, int MinimumCallSize = 0,
            int maximumMergeSpan = 10000)
        {
            if (!segments.Any()) return;

            // Assimilate short segments into the *best* available neighbor:
            List<CanvasSegment> mergedSegments = new List<CanvasSegment>();
            int segmentIndex = 0;
            while (segmentIndex < segments.Count)
            {
                if (segments[segmentIndex].End - segments[segmentIndex].Begin >= MinimumCallSize)
                {
                    mergedSegments.Add(segments[segmentIndex]);
                    segmentIndex++;
                    continue;
                }
                int prevIndex = -1;
                double prevQ = -1;
                // Look back for a segment:
                for (int checkIndex = segmentIndex - 1; checkIndex >= 0; checkIndex--)
                {
                    // Stop, if you jump to another chromosome, or cross a forbidden interval:
                    if (segments[checkIndex].Chr != segments[segmentIndex].Chr) break;
                    if (segments[checkIndex].End - segments[checkIndex].Begin < MinimumCallSize) continue;
                    if (segments[segmentIndex].Begin - segments[checkIndex].End > maximumMergeSpan) break;
                    prevIndex = checkIndex;
                    prevQ = segments[checkIndex].QScore;
                    break;
                }
                // Look forward for a segment:
                int nextIndex = -1;
                double nextQ = -1;
                for (int checkIndex = segmentIndex + 1; checkIndex < segments.Count; checkIndex++)
                {
                    if (segments[checkIndex].Chr != segments[segmentIndex].Chr) break;
                    if (segments[checkIndex].End - segments[checkIndex].Begin < MinimumCallSize) continue;
                    if (segments[checkIndex].Begin - segments[segmentIndex].End > maximumMergeSpan) continue;
                    nextIndex = checkIndex;
                    nextQ = segments[checkIndex].QScore;
                    break;
                }

                if (prevQ >= 0 && prevQ >= nextQ)
                {
                    // segments[prevIndex] assimilates segments[prevIndex+1...segmentIndex].
                    // Assimilation of previous segments was already done, so we just need to assimilate this one:
                    segments[prevIndex].MergeIn(segments[segmentIndex]);
                    segmentIndex++;
                    continue;
                }

                if (nextQ >= 0)
                {
                    // segments[nextIndex] assimilates segments[segmentIndex...nextIndex - 1]
                    for (int tempIndex = segmentIndex; tempIndex < nextIndex; tempIndex++)
                    {
                        segments[nextIndex].MergeIn(segments[tempIndex]);
                    }
                    segmentIndex = nextIndex;
                    continue;
                }

                mergedSegments.Add(segments[segmentIndex]);
                segmentIndex++;
            }
            segments = mergedSegments;

            // Now, merge together adjacent segments with same calls!
            mergedSegments = new List<CanvasSegment>();
            CanvasSegment lastSegment = segments[0];
            mergedSegments.Add(lastSegment);
            segmentIndex = 1;
            while (segmentIndex < segments.Count)
            {
                // Assimilate an adjacent segment with the same copy number call:
                if (lastSegment.copyNumber == segments[segmentIndex].copyNumber && lastSegment.Chr == segments[segmentIndex].Chr &&
                    segments[segmentIndex].Begin - lastSegment.End < maximumMergeSpan)
                {
                    lastSegment.MergeIn(segments[segmentIndex]);
                    segmentIndex++;
                    continue;
                }
                lastSegment = segments[segmentIndex];
                mergedSegments.Add(segments[segmentIndex]);
                segmentIndex++;
            }
            segments = mergedSegments;
        }