Method finishRun

src/backend/datapicker/Segments.cpp:199–229

! process a run of pixels. if there are fewer than two adjacent pixel runs on either side, this run will be added to an existing segment, or the start of a new segment */

	a new segment
*/
void Segments::finishRun(const bool* lastBool, const bool* nextBool, Segment** lastSegment, Segment** currSegment, int x, int yStart, int yStop, int height) {
	// count runs that touch on the left
	if (adjacentRuns(lastBool, yStart, yStop, height) > 1)
		return;

	// count runs that touch on the right
	if (adjacentRuns(nextBool, yStart, yStop, height) > 1)
		return;

	Segment* seg;
	int yLast = (int)((yStart + yStop) / 2);
	if (adjacentSegments(lastSegment, yStart, yStop, height) == 0) {
		seg = new Segment(m_image);
		QLine* line = new QLine(QPoint(x, yLast), QPoint(x, yLast));
		seg->path.append(line);
		seg->yLast = yLast;
		segments.append(seg);
	} else {
		// this is the continuation of an existing segment
		seg = adjacentSegment(lastSegment, yStart, yStop, height);
		QLine* line = new QLine(QPoint(x - 1, seg->yLast), QPoint(x, yLast));
		seg->length += abs(1 + (seg->yLast - yLast) * (seg->yLast - yLast));
		seg->path.append(line);
		seg->yLast = yLast;
	}

	seg->retransform();

	for (int y = yStart; y <= yStop; ++y)
		currSegment[y] = seg;
}

/*!
	return the number of runs adjacent to the pixels from yStart to yStop (inclusive)