如何使QtChart在一定范围内不绘制折线图？

#include <QtCharts>

class CustomLineSeries : public QtCharts::QLineSeries
{
public:
    CustomLineSeries(QObject* parent = nullptr)
        : QtCharts::QLineSeries(parent)
    {
    }

    virtual void line(const QPointF &point1, const QPointF &point2)
    {
        // 设置需要忽略的范围，这里以x坐标为例
        qreal minRange = 2.0;
        qreal maxRange = 8.0;

        // 判断点的横坐标是否在指定范围内
        if (point1.x() >= minRange && point1.x() <= maxRange &&
            point2.x() >= minRange && point2.x() <= maxRange)
        {
            // 在指定范围内，调用原始的line函数绘制折线
            QtCharts::QLineSeries::line(point1, point2);
        }
    }
};

#include <QtCharts>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QtCharts::QChartView chartView;

    QtCharts::QLineSeries series;

    // 添加数据
    series << QPointF(1, 5)
           << QPointF(2, 3)
           << QPointF(3, std::numeric_limits<qreal>::quiet_NaN())  // 将数据设置为无效值
           << QPointF(4, 7)
           << QPointF(5, std::numeric_limits<qreal>::quiet_NaN())  // 将数据设置为无效值
           << QPointF(6, 2)
           << QPointF(7, 6);

    chartView.chart()->addSeries(&series);
    chartView.show();

    return app.exec();
}