Function draw_vehicle_selection_overlay 

fn draw_vehicle_selection_overlay(
    ui: &mut Ui,
    painter: &mut Painter,
    rendered_vehicles: &[RenderedVehicle<'_>],
    state: &mut DiagramPageCache,
    line_strength: f32,
    button_strength: f32,
    selected_entity: Entity,
    timetable_adjustment_writer: &mut MessageWriter<'_, AdjustTimetableEntry>,
    station_names: &Query<'_, '_, &Name, With<Station>>,
)