Method add_hover_point

src/plot_widget.rs:485–487

Add a hover point to the plot.

(&mut self, point_id: PointId)

        for (i, position) in series.positions.iter().enumerate() {
            let distance = (position[0] - x).abs();
            if distance < min_distance {
                min_distance = distance;
                nearest_point = Some(PointId {
                    series_id,
                    point_index: i,
                });