Method painterPathForY

src/backend/worksheet/plots/cartesian/ErrorBar.cpp:327–447

error bars for y

// error bars for y
void ErrorBarPrivate::painterPathForY(QPainterPath& path,
									  const QVector<QPointF>& points,
									  const CartesianCoordinateSystem* cSystem,
									  WorksheetElement::Orientation orientation) const {
	QVector<QLineF> elines;

	switch (yErrorType) {
	case ErrorBar::ErrorType::NoError:
		return;
	case ErrorBar::ErrorType::Poisson: {
		if (orientation == WorksheetElement::Orientation::Vertical) {
			for (auto& point : points) {
				const double error = sqrt(point.y());
				if (error != 0.)
					elines << QLineF(point.x(), point.y() + error, point.x(), point.y() - error);
			}
		} else {
			for (auto& point : points) {
				double error = sqrt(point.x());
				if (error != 0.)
					elines << QLineF(point.x() - error, point.y(), point.x() + error, point.y());
			}
		}
		break;
	}
	case ErrorBar::ErrorType::Symmetric: {
		int index = 0;
		if (orientation == WorksheetElement::Orientation::Vertical) {
			for (auto& point : points) {
				if (yPlusColumn && yPlusColumn->isValid(index) && !yPlusColumn->isMasked(index)) {
					const double error = yPlusColumn->valueAt(index);
					if (error != 0.)
						elines << QLineF(point.x(), point.y() + error, point.x(), point.y() - error);
				}
				++index;
			}
		} else {
			for (auto& point : points) {
				if (yPlusColumn && yPlusColumn->isValid(index) && !yPlusColumn->isMasked(index)) {
					double error = yPlusColumn->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;
		if (orientation == WorksheetElement::Orientation::Vertical) {
			for (auto& point : points) {
				double errorPlus = 0.;
				double errorMinus = 0.;

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