Method painterPathForX

src/backend/worksheet/plots/cartesian/ErrorBar.cpp:261–324

}

void ErrorBarPrivate::painterPathForX(QPainterPath& path, const QVector<QPointF>& points, const CartesianCoordinateSystem* cSystem) const {
	QVector<QLineF> elines;

	switch (xErrorType) {
	case ErrorBar::ErrorType::NoError:
	case ErrorBar::ErrorType::Poisson:
		return;
	case ErrorBar::ErrorType::Symmetric: {
		int index = 0;
		for (auto& point : points) {
			if (xPlusColumn && xPlusColumn->isValid(index) && !xPlusColumn->isMasked(index)) {
				const double error = xPlusColumn->valueAt(index);
				if (error != 0.)
					elines << QLineF(point.x() - error, point.y(), point.x() + error, point.y());
			}
			++index;
		}

		break;
	}
	case ErrorBar::ErrorType::Asymmetric: {
		int index = 0;
		for (auto& point : points) {
			double errorPlus = 0.;
			double errorMinus = 0.;

			if (xPlusColumn && xPlusColumn->isValid(index) && !xPlusColumn->isMasked(index))
				errorPlus = xPlusColumn->valueAt(index);

			if (xMinusColumn && xMinusColumn->isValid(index) && !xMinusColumn->isMasked(index))
				errorMinus = xMinusColumn->valueAt(index);

			if (errorPlus != 0. || errorMinus != 0.)
				elines << QLineF(point.x() - errorMinus, point.y(), point.x() + errorPlus, point.y());

			++index;
		}

		break;
	}
	}

	// map the error bars to scene coordinates
	elines = cSystem->mapLogicalToScene(elines);

	// new painter path for the error bars
	for (const auto& line : std::as_const(elines)) {
		path.moveTo(line.p1());
		path.lineTo(line.p2());
	}

	// add caps for error bars
	if (type == ErrorBar::Type::WithEnds) {
		for (const auto& line : std::as_const(elines)) {
			const auto& p1 = line.p1();
			path.moveTo(QPointF(p1.x(), p1.y() - capSize / 2.));
			path.lineTo(QPointF(p1.x(), p1.y() + capSize / 2.));