Method updateRug

src/backend/worksheet/plots/cartesian/BoxPlot.cpp:1288–1340

}

void BoxPlotPrivate::updateRug() {
	if (!rugEnabled || !q->plot()) {
		recalcShapeAndBoundingRect();
		return;
	}

	auto cs = q->plot()->coordinateSystem(q->coordinateSystemIndex());
	const double xMin = q->plot()->range(Dimension::X, cs->index(Dimension::X)).start();
	const double yMin = q->plot()->range(Dimension::Y, cs->index(Dimension::Y)).start();

	QPainterPath rugPath;
	QVector<QPointF> points;

	for (int i = 0; i < q->dataColumns().count(); ++i) {
		const auto* column = static_cast<const Column*>(q->dataColumns().at(i));
		rugPath.clear();
		points.clear();

		if (orientation == BoxPlot::Orientation::Horizontal) {
			for (int row = 0; row < column->rowCount(); ++row) {
				if (column->isValid(row) && !column->isMasked(row))
					points << QPointF(column->valueAt(row), yMin);
			}

			// map the points to scene coordinates
			points = q->cSystem->mapLogicalToScene(points);

			// path for the vertical rug lines
			for (const auto& point : std::as_const(points)) {
				rugPath.moveTo(point.x(), point.y() - rugOffset);
				rugPath.lineTo(point.x(), point.y() - rugOffset - rugLength);
			}
		} else { // horizontal
			for (int row = 0; row < column->rowCount(); ++row) {
				if (column->isValid(row) && !column->isMasked(row))
					points << QPointF(xMin, column->valueAt(row));
			}

			// map the points to scene coordinates
			points = q->cSystem->mapLogicalToScene(points);

			// path for the horizontal rug lines
			for (const auto& point : std::as_const(points)) {
				rugPath.moveTo(point.x() + rugOffset, point.y());
				rugPath.lineTo(point.x() + rugOffset + rugLength, point.y());
			}
		}

		m_rugPath[i] = rugPath;
	}

	recalcShapeAndBoundingRect();
}

void BoxPlotPrivate::updateFillingRect(int index, const QVector<QLineF>& lines) {
	const auto& unclippedLines = q->cSystem->mapLogicalToScene(lines, AbstractCoordinateSystem::MappingFlag::SuppressPageClipping);