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use std::collections::BTreeSet;
use std::fmt;
use serde::{Deserialize, Serialize};
use abstutil::{deserialize_usize, serialize_usize};
use geom::{Distance, Polygon};
use crate::{osm, DirectedRoadID, LaneID, Map, PathConstraints, Road, RoadID, Turn};
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, PartialOrd, Ord, Serialize, Deserialize)]
pub struct IntersectionID(
#[serde(
serialize_with = "serialize_usize",
deserialize_with = "deserialize_usize"
)]
pub usize,
);
impl fmt::Display for IntersectionID {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Intersection #{}", self.0)
}
}
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
pub enum IntersectionType {
StopSign,
TrafficSignal,
Border,
Construction,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct Intersection {
pub id: IntersectionID,
pub polygon: Polygon,
pub turns: Vec<Turn>,
pub elevation: Distance,
pub intersection_type: IntersectionType,
pub orig_id: osm::NodeID,
pub incoming_lanes: Vec<LaneID>,
pub outgoing_lanes: Vec<LaneID>,
pub roads: BTreeSet<RoadID>,
pub merged: bool,
}
impl Intersection {
pub fn is_border(&self) -> bool {
self.intersection_type == IntersectionType::Border
}
pub fn is_incoming_border(&self) -> bool {
self.intersection_type == IntersectionType::Border && !self.outgoing_lanes.is_empty()
}
pub fn is_outgoing_border(&self) -> bool {
self.intersection_type == IntersectionType::Border && !self.incoming_lanes.is_empty()
}
pub fn is_closed(&self) -> bool {
self.intersection_type == IntersectionType::Construction
}
pub fn is_stop_sign(&self) -> bool {
self.intersection_type == IntersectionType::StopSign
}
pub fn is_traffic_signal(&self) -> bool {
self.intersection_type == IntersectionType::TrafficSignal
}
pub fn is_light_rail(&self, map: &Map) -> bool {
self.roads.iter().all(|r| map.get_r(*r).is_light_rail())
}
pub fn is_private(&self, map: &Map) -> bool {
self.roads.iter().all(|r| map.get_r(*r).is_private())
}
pub fn is_footway(&self, map: &Map) -> bool {
self.roads.iter().all(|r| map.get_r(*r).is_footway())
}
pub fn is_cycleway(&self, map: &Map) -> bool {
self.roads.iter().all(|r| map.get_r(*r).is_cycleway())
}
pub fn get_incoming_lanes(&self, map: &Map, constraints: PathConstraints) -> Vec<LaneID> {
self.incoming_lanes
.iter()
.filter(move |l| constraints.can_use(map.get_l(**l), map))
.cloned()
.collect()
}
pub fn get_outgoing_lanes(&self, map: &Map, constraints: PathConstraints) -> Vec<LaneID> {
constraints.filter_lanes(self.outgoing_lanes.clone(), map)
}
pub fn get_zorder(&self, map: &Map) -> isize {
self.roads
.iter()
.map(|r| map.get_r(*r).zorder)
.min()
.unwrap()
}
pub fn get_rank(&self, map: &Map) -> osm::RoadRank {
self.roads
.iter()
.map(|r| map.get_r(*r).get_rank())
.max()
.unwrap()
}
pub fn get_roads_sorted_by_incoming_angle(&self, all_roads: &[Road]) -> Vec<RoadID> {
let center = self.polygon.center();
let mut roads: Vec<RoadID> = self.roads.iter().cloned().collect();
roads.sort_by_key(|id| {
let r = &all_roads[id.0];
let endpt = if r.src_i == self.id {
r.center_pts.first_pt()
} else if r.dst_i == self.id {
r.center_pts.last_pt()
} else {
unreachable!();
};
endpt.angle_to(center).normalized_degrees() as i64
});
roads
}
pub fn get_sorted_incoming_roads(&self, map: &Map) -> Vec<RoadID> {
let mut roads = Vec::new();
for r in self.get_roads_sorted_by_incoming_angle(map.all_roads()) {
if !map.get_r(r).incoming_lanes(self.id).is_empty() {
roads.push(r);
}
}
roads
}
pub fn some_outgoing_road(&self, map: &Map) -> Option<DirectedRoadID> {
self.outgoing_lanes
.get(0)
.map(|l| map.get_l(*l).get_directed_parent())
}
pub fn some_incoming_road(&self, map: &Map) -> Option<DirectedRoadID> {
self.incoming_lanes
.get(0)
.map(|l| map.get_l(*l).get_directed_parent())
}
pub fn name(&self, lang: Option<&String>, map: &Map) -> String {
let road_names = self
.roads
.iter()
.map(|r| map.get_r(*r).get_name(lang))
.collect::<BTreeSet<_>>();
abstutil::plain_list_names(road_names)
}
}