Struct map_gui::tools::DrawRoadLabels

pub struct DrawRoadLabels {
    per_zoom: RefCell<[Option<Drawable>; 11]>,
    include_roads: Box<dyn Fn(&Road) -> bool>,
}

Labels roads when unzoomed. Label size and frequency depends on the zoom level.

Fields

per_zoom: RefCell<[Option<Drawable>; 11]>

include_roads: Box<dyn Fn(&Road) -> bool>

Implementations

impl DrawRoadLabels

pub fn new(include_roads: Box<dyn Fn(&Road) -> bool>) -> DrawRoadLabels

Label roads that the predicate approves

pub fn only_major_roads() -> DrawRoadLabels

Only label major roads

pub fn draw(&self, g: &mut GfxCtx<'_>, app: &dyn AppLike)

fn discretize_zoom(zoom: f64) -> (f64, usize)

fn render(
    g: &mut GfxCtx<'_>,
    app: &dyn AppLike,
    include_roads: &dyn Fn(&Road) -> bool,
    zoom: f64
) -> Drawable