Function referencePointAt

pj_plotting/widget/src/CurveTracker.cpp:25–27

namespace {

[[nodiscard]] std::optional<QPointF> referencePointAt(const QwtPlotCurve* curve, std::optional<QPointF> reference) {
  return reference.has_value() ? curvePointAt(curve, reference->x()) : std::nullopt;
}

}  // namespace