Function map_model::make::match_points_to_lanes

fn match_points_to_lanes<F: Fn(&Lane) -> bool>(
    bounds: &Bounds, 
    pts: HashSet<HashablePt2D>, 
    lanes: &Vec<Lane>, 
    filter: F, 
    buffer: Distance, 
    max_dist_away: Distance, 
    timer: &mut Timer<'_>
) -> HashMap<HashablePt2D, Position>

Snap points to an exact Position along the nearest lane. If the result doesn't contain a requested point, then there was no matching lane close enough.