Function find_closest_rect

egui_plot/src/math.rs:32–50

(
    rects: impl IntoIterator<Item = &'a T>,
    point: Pos2,
    transform: &PlotTransform,
)

}

pub fn find_closest_rect<'a, T>(
    rects: impl IntoIterator<Item = &'a T>,
    point: Pos2,
    transform: &PlotTransform,
) -> Option<ClosestElem>
where
    T: 'a + RectElement,
{
    rects
        .into_iter()
        .enumerate()
        .map(|(index, bar)| {
            let bar_rect = transform.rect_from_values(&bar.bounds_min(), &bar.bounds_max());
            let dist_sq = bar_rect.distance_sq_to_pos(point);

            ClosestElem { index, dist_sq }
        })
        .min_by_key(|e| e.dist_sq.ord())
}