mirror of
https://github.com/a-b-street/abstreet.git
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Organize modal filter code before big changes
This commit is contained in:
Dustin Carlino
parent
6826145de2
commit
e0b18d6d07
222
game/src/ltn/filters.rs
Normal file
222
game/src/ltn/filters.rs
Normal file
@ -0,0 +1,222 @@
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use std::collections::{BTreeMap, BTreeSet};
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use geom::{Circle, Distance, Line};
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use map_model::{IntersectionID, Map, RoadID, RoutingParams, TurnID};
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use widgetry::mapspace::ToggleZoomed;
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use widgetry::{Color, EventCtx, GeomBatch};
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use super::Neighborhood;
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use crate::app::App;
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/// Stored in App session state
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#[derive(Default)]
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pub struct ModalFilters {
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/// For filters placed along a road, where is the filter located?
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pub roads: BTreeMap<RoadID, Distance>,
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pub intersections: BTreeMap<IntersectionID, DiagonalFilter>,
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}
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/// A diagonal filter exists in an intersection. It's defined by two roads (the order is
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/// arbitrary). When all of the intersection's roads are sorted in clockwise order, this pair of
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/// roads splits the ordering into two groups. Turns in each group are still possible, but not
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/// across groups.
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///
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/// TODO Be careful with PartialEq! At a 4-way intersection, the same filter can be expressed as a
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/// different pair of two roads. And the (r1, r2) ordering is also arbitrary.
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#[derive(Clone, PartialEq)]
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pub struct DiagonalFilter {
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r1: RoadID,
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r2: RoadID,
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i: IntersectionID,
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group1: BTreeSet<RoadID>,
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group2: BTreeSet<RoadID>,
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}
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impl ModalFilters {
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/// Modify RoutingParams to respect these modal filters
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pub fn update_routing_params(&self, params: &mut RoutingParams) {
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params.avoid_roads.extend(self.roads.keys().cloned());
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for filter in self.intersections.values() {
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params
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.avoid_movements_between
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.extend(filter.avoid_movements_between_roads());
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}
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}
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pub fn allows_turn(&self, t: TurnID) -> bool {
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if let Some(filter) = self.intersections.get(&t.parent) {
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return filter.allows_turn(t.src.road, t.dst.road);
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}
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true
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}
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/// Draw all modal filters. If `only_neighborhood` is specified, only draw filters belonging to
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/// one area.
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pub fn draw(
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&self,
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ctx: &EventCtx,
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map: &Map,
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only_neighborhood: Option<&Neighborhood>,
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) -> ToggleZoomed {
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let mut batch = ToggleZoomed::builder();
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for (r, dist) in &self.roads {
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if only_neighborhood
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.map(|n| !n.orig_perimeter.interior.contains(r))
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.unwrap_or(false)
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{
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continue;
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}
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let road = map.get_r(*r);
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if let Ok((pt, angle)) = road.center_pts.dist_along(*dist) {
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let road_width = road.get_width();
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batch
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.unzoomed
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.push(Color::RED, Circle::new(pt, road_width).to_polygon());
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batch.unzoomed.push(
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Color::WHITE,
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Line::must_new(
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pt.project_away(0.8 * road_width, angle.rotate_degs(90.0)),
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pt.project_away(0.8 * road_width, angle.rotate_degs(-90.0)),
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)
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.make_polygons(Distance::meters(7.0)),
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);
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// TODO Only cover the driving/parking lanes (and center appropriately)
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draw_zoomed_planters(
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ctx,
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&mut batch.zoomed,
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Line::must_new(
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pt.project_away(0.3 * road_width, angle.rotate_degs(90.0)),
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pt.project_away(0.3 * road_width, angle.rotate_degs(-90.0)),
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),
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);
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}
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}
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for (i, filter) in &self.intersections {
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if only_neighborhood
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.map(|n| !n.interior_intersections.contains(i))
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.unwrap_or(false)
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{
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continue;
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}
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let line = filter.geometry(map);
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batch
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.unzoomed
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.push(Color::RED, line.make_polygons(Distance::meters(3.0)));
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draw_zoomed_planters(
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ctx,
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&mut batch.zoomed,
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line.percent_slice(0.3, 0.7).unwrap_or(line),
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);
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}
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batch.build(ctx)
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}
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}
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impl DiagonalFilter {
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/// Find all possible diagonal filters at an intersection
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pub fn filters_for(app: &App, i: IntersectionID) -> Vec<DiagonalFilter> {
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let map = &app.primary.map;
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let roads = map.get_i(i).get_roads_sorted_by_incoming_angle(map);
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// TODO Handle >4-ways
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if roads.len() != 4 {
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return Vec::new();
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}
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vec![
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DiagonalFilter::new(map, i, roads[0], roads[1]),
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DiagonalFilter::new(map, i, roads[1], roads[2]),
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]
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}
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fn new(map: &Map, i: IntersectionID, r1: RoadID, r2: RoadID) -> DiagonalFilter {
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let mut roads = map.get_i(i).get_roads_sorted_by_incoming_angle(map);
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// Make self.r1 be the first entry
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while roads[0] != r1 {
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roads.rotate_right(1);
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}
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let mut group1 = BTreeSet::new();
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group1.insert(roads.remove(0));
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loop {
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let next = roads.remove(0);
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group1.insert(next);
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if next == r2 {
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break;
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}
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}
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// This is only true for 4-ways...
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assert_eq!(group1.len(), 2);
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assert_eq!(roads.len(), 2);
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DiagonalFilter {
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r1,
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r2,
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i,
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group1,
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group2: roads.into_iter().collect(),
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}
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}
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/// Physically where is the filter placed?
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fn geometry(&self, map: &Map) -> Line {
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let r1 = map.get_r(self.r1);
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let r2 = map.get_r(self.r2);
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// Orient the road to face the intersection
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let mut pl1 = r1.center_pts.clone();
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if r1.src_i == self.i {
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pl1 = pl1.reversed();
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}
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let mut pl2 = r2.center_pts.clone();
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if r2.src_i == self.i {
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pl2 = pl2.reversed();
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}
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// The other combinations of left/right here would produce points or a line across just one
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// road
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let pt1 = pl1.must_shift_right(r1.get_half_width()).last_pt();
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let pt2 = pl2.must_shift_left(r2.get_half_width()).last_pt();
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Line::must_new(pt1, pt2)
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}
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pub fn allows_turn(&self, from: RoadID, to: RoadID) -> bool {
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self.group1.contains(&from) == self.group1.contains(&to)
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}
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fn avoid_movements_between_roads(&self) -> Vec<(RoadID, RoadID)> {
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let mut pairs = Vec::new();
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for from in &self.group1 {
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for to in &self.group2 {
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pairs.push((*from, *to));
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pairs.push((*to, *from));
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}
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}
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pairs
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}
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}
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// Draw two planters on each end of a line. They'll be offset so that they don't exceed the
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// endpoints.
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fn draw_zoomed_planters(ctx: &EventCtx, batch: &mut GeomBatch, line: Line) {
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let planter = GeomBatch::load_svg(ctx, "system/assets/map/planter.svg");
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let planter_width = planter.get_dims().width;
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let scaled_planter = planter.scale(0.3 * line.length().inner_meters() / planter_width);
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batch.append(
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scaled_planter
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.clone()
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.centered_on(line.must_dist_along(0.15 * line.length()))
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.rotate(line.angle()),
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);
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batch.append(
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scaled_planter
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.centered_on(line.must_dist_along(0.85 * line.length()))
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.rotate(line.angle()),
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);
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}
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@ -2,21 +2,23 @@ use std::collections::{BTreeMap, BTreeSet};
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use maplit::btreeset;
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use geom::{Circle, Distance, Line, Polygon};
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use geom::{Distance, Polygon};
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use map_gui::tools::DrawRoadLabels;
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use map_model::{IntersectionID, Map, PathConstraints, Perimeter, RoadID, RoutingParams, TurnID};
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use map_model::{IntersectionID, Map, PathConstraints, Perimeter, RoadID};
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use widgetry::mapspace::ToggleZoomed;
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use widgetry::{Color, Drawable, EventCtx, GeomBatch};
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use widgetry::{Drawable, EventCtx, GeomBatch};
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use crate::app::App;
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pub use browse::BrowseNeighborhoods;
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pub use filters::{DiagonalFilter, ModalFilters};
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pub use partition::Partitioning;
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mod auto;
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mod browse;
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mod connectivity;
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mod draw_cells;
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mod filters;
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mod partition;
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mod pathfinding;
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mod per_neighborhood;
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@ -40,115 +42,6 @@ pub struct Neighborhood {
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labels: DrawRoadLabels,
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}
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#[derive(Default)]
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pub struct ModalFilters {
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/// For filters placed along a road, where is the filter located?
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pub roads: BTreeMap<RoadID, Distance>,
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pub intersections: BTreeMap<IntersectionID, DiagonalFilter>,
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}
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impl ModalFilters {
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/// Modify RoutingParams to respect these modal filters
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pub fn update_routing_params(&self, params: &mut RoutingParams) {
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params.avoid_roads.extend(self.roads.keys().cloned());
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for filter in self.intersections.values() {
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params
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.avoid_movements_between
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.extend(filter.avoid_movements_between_roads());
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}
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}
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pub fn allows_turn(&self, t: TurnID) -> bool {
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if let Some(filter) = self.intersections.get(&t.parent) {
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return filter.allows_turn(t.src.road, t.dst.road);
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}
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true
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}
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/// Draw all modal filters. If `only_neighborhood` is specified, only draw filters belonging to
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/// one area.
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pub fn draw(
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&self,
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ctx: &EventCtx,
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map: &Map,
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only_neighborhood: Option<&Neighborhood>,
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) -> ToggleZoomed {
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let mut batch = ToggleZoomed::builder();
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for (r, dist) in &self.roads {
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if only_neighborhood
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.map(|n| !n.orig_perimeter.interior.contains(r))
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.unwrap_or(false)
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{
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continue;
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}
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let road = map.get_r(*r);
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if let Ok((pt, angle)) = road.center_pts.dist_along(*dist) {
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let road_width = road.get_width();
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batch
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.unzoomed
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.push(Color::RED, Circle::new(pt, road_width).to_polygon());
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batch.unzoomed.push(
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Color::WHITE,
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Line::must_new(
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pt.project_away(0.8 * road_width, angle.rotate_degs(90.0)),
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pt.project_away(0.8 * road_width, angle.rotate_degs(-90.0)),
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)
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.make_polygons(Distance::meters(7.0)),
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);
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// TODO Only cover the driving/parking lanes (and center appropriately)
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draw_zoomed_planters(
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ctx,
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&mut batch.zoomed,
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Line::must_new(
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pt.project_away(0.3 * road_width, angle.rotate_degs(90.0)),
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pt.project_away(0.3 * road_width, angle.rotate_degs(-90.0)),
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),
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);
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}
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}
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for (i, filter) in &self.intersections {
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if only_neighborhood
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.map(|n| !n.interior_intersections.contains(i))
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.unwrap_or(false)
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{
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continue;
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}
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let line = filter.geometry(map);
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batch
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.unzoomed
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.push(Color::RED, line.make_polygons(Distance::meters(3.0)));
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draw_zoomed_planters(
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ctx,
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&mut batch.zoomed,
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line.percent_slice(0.3, 0.7).unwrap_or(line),
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);
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}
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batch.build(ctx)
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}
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}
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/// A diagonal filter exists in an intersection. It's defined by two roads (the order is
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/// arbitrary). When all of the intersection's roads are sorted in clockwise order, this pair of
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/// roads splits the ordering into two groups. Turns in each group are still possible, but not
|
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/// across groups.
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///
|
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/// TODO Be careful with PartialEq! At a 4-way intersection, the same filter can be expressed as a
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/// different pair of two roads. And the (r1, r2) ordering is also arbitrary.
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#[derive(Clone, PartialEq)]
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pub struct DiagonalFilter {
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r1: RoadID,
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r2: RoadID,
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i: IntersectionID,
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group1: BTreeSet<RoadID>,
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group2: BTreeSet<RoadID>,
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}
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/// A partitioning of the interior of a neighborhood based on driving connectivity
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pub struct Cell {
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/// Most roads are fully in one cell. Roads with modal filters on them are sometimes split
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@ -248,26 +141,6 @@ impl Neighborhood {
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}
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}
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// Draw two planters on each end of a line. They'll be offset so that they don't exceed the
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// endpoints.
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fn draw_zoomed_planters(ctx: &EventCtx, batch: &mut GeomBatch, line: Line) {
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let planter = GeomBatch::load_svg(ctx, "system/assets/map/planter.svg");
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let planter_width = planter.get_dims().width;
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let scaled_planter = planter.scale(0.3 * line.length().inner_meters() / planter_width);
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batch.append(
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scaled_planter
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.clone()
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.centered_on(line.must_dist_along(0.15 * line.length()))
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.rotate(line.angle()),
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);
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batch.append(
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scaled_planter
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.centered_on(line.must_dist_along(0.85 * line.length()))
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.rotate(line.angle()),
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);
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}
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// Find all of the disconnected "cells" of reachable areas, bounded by a perimeter. This is with
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// respect to driving.
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fn find_cells(
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@ -449,86 +322,3 @@ fn floodfill(
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car_free: false,
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}
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}
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impl DiagonalFilter {
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/// Find all possible diagonal filters at an intersection
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fn filters_for(app: &App, i: IntersectionID) -> Vec<DiagonalFilter> {
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let map = &app.primary.map;
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let roads = map.get_i(i).get_roads_sorted_by_incoming_angle(map);
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// TODO Handle >4-ways
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if roads.len() != 4 {
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return Vec::new();
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}
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vec![
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DiagonalFilter::new(map, i, roads[0], roads[1]),
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DiagonalFilter::new(map, i, roads[1], roads[2]),
|
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]
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}
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fn new(map: &Map, i: IntersectionID, r1: RoadID, r2: RoadID) -> DiagonalFilter {
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let mut roads = map.get_i(i).get_roads_sorted_by_incoming_angle(map);
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// Make self.r1 be the first entry
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while roads[0] != r1 {
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roads.rotate_right(1);
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}
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let mut group1 = BTreeSet::new();
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group1.insert(roads.remove(0));
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loop {
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let next = roads.remove(0);
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group1.insert(next);
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if next == r2 {
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break;
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}
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}
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// This is only true for 4-ways...
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assert_eq!(group1.len(), 2);
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assert_eq!(roads.len(), 2);
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DiagonalFilter {
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r1,
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r2,
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i,
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group1,
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group2: roads.into_iter().collect(),
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}
|
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}
|
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|
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/// Physically where is the filter placed?
|
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fn geometry(&self, map: &Map) -> Line {
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let r1 = map.get_r(self.r1);
|
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let r2 = map.get_r(self.r2);
|
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|
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// Orient the road to face the intersection
|
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let mut pl1 = r1.center_pts.clone();
|
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if r1.src_i == self.i {
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pl1 = pl1.reversed();
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}
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let mut pl2 = r2.center_pts.clone();
|
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if r2.src_i == self.i {
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pl2 = pl2.reversed();
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}
|
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|
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// The other combinations of left/right here would produce points or a line across just one
|
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// road
|
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let pt1 = pl1.must_shift_right(r1.get_half_width()).last_pt();
|
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let pt2 = pl2.must_shift_left(r2.get_half_width()).last_pt();
|
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Line::must_new(pt1, pt2)
|
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}
|
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|
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fn allows_turn(&self, from: RoadID, to: RoadID) -> bool {
|
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self.group1.contains(&from) == self.group1.contains(&to)
|
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}
|
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|
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fn avoid_movements_between_roads(&self) -> Vec<(RoadID, RoadID)> {
|
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let mut pairs = Vec::new();
|
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for from in &self.group1 {
|
||||
for to in &self.group2 {
|
||||
pairs.push((*from, *to));
|
||||
pairs.push((*to, *from));
|
||||
}
|
||||
}
|
||||
pairs
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user