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Make the intersection geometry logic an operation. Keep the transform…
… for the moment. #136
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mod collapse_intersection; | ||
mod collapse_short_road; | ||
mod update_geometry; |
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use geom::{Circle, Distance}; | ||
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use crate::{IntersectionID, Road, StreetNetwork}; | ||
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impl StreetNetwork { | ||
/// Recalculates trim distances and intersection geometry. This is idempotent; it doesn't use | ||
/// any results from the previous call. | ||
pub fn update_geometry(&mut self, id: IntersectionID) { | ||
let i = &self.intersections[&id]; | ||
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// Update the polygon and Set trim distances for roads | ||
let input_roads = i | ||
.roads | ||
.iter() | ||
.map(|r| self.roads[r].to_input_road(self.config.driving_side)) | ||
.collect::<Vec<_>>(); | ||
match crate::intersection_polygon(i.id, input_roads, &i.trim_roads_for_merging) { | ||
Ok(results) => { | ||
self.intersections.get_mut(&id).unwrap().polygon = results.intersection_polygon; | ||
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for (r, dist) in results.trim_starts { | ||
self.roads.get_mut(&r).unwrap().trim_start = dist; | ||
} | ||
for (r, dist) in results.trim_ends { | ||
self.roads.get_mut(&r).unwrap().trim_end = dist; | ||
} | ||
for (pt, label) in results.debug { | ||
self.debug_point(pt, label); | ||
} | ||
} | ||
Err(err) => { | ||
error!("Can't make intersection geometry for {}: {}", i.id, err); | ||
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let r = i.roads[0]; | ||
// Don't trim lines back at all | ||
let road = &self.roads[&r]; | ||
let pt = if road.src_i == i.id { | ||
road.center_line.first_pt() | ||
} else { | ||
road.center_line.last_pt() | ||
}; | ||
self.intersections.get_mut(&id).unwrap().polygon = | ||
Circle::new(pt, Distance::meters(3.0)).to_polygon(); | ||
} | ||
} | ||
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// Update road center lines based on the trim. Note update_geometry works on one | ||
// intersection at a time, so it's possible some roads haven't been trimmed yet on the | ||
// other side. | ||
for r in &self.intersections[&id].roads { | ||
let road = self.roads.get_mut(r).unwrap(); | ||
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let untrimmed = road.get_untrimmed_center_line(self.config.driving_side); | ||
if let Some(pl) = | ||
Road::trim_polyline_both_ends(untrimmed.clone(), road.trim_start, road.trim_end) | ||
{ | ||
road.center_line = pl; | ||
} else { | ||
error!("{} got trimmed into oblivion, collapse it later", road.id); | ||
road.center_line = untrimmed; | ||
// Collapse it later | ||
road.internal_junction_road = true; | ||
} | ||
} | ||
} | ||
} |
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use abstutil::Timer; | ||
use geom::{Circle, Distance}; | ||
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use crate::{Road, StreetNetwork}; | ||
use crate::StreetNetwork; | ||
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pub fn generate(streets: &mut StreetNetwork, timer: &mut Timer) { | ||
timer.start_iter( | ||
"find each intersection polygon", | ||
streets.intersections.len(), | ||
); | ||
// It'd be nice to mutate in the loop, but the borrow checker won't let us | ||
let mut set_polygons = Vec::new(); | ||
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// Set trim distances for all roads | ||
for i in streets.intersections.values() { | ||
let ids = streets.intersections.keys().cloned().collect::<Vec<_>>(); | ||
for i in ids { | ||
timer.next(); | ||
let input_roads = i | ||
.roads | ||
.iter() | ||
.map(|r| streets.roads[r].to_input_road(streets.config.driving_side)) | ||
.collect::<Vec<_>>(); | ||
match crate::intersection_polygon(i.id, input_roads, &i.trim_roads_for_merging) { | ||
Ok(results) => { | ||
set_polygons.push((i.id, results.intersection_polygon)); | ||
for (r, dist) in results.trim_starts { | ||
streets.roads.get_mut(&r).unwrap().trim_start = dist; | ||
} | ||
for (r, dist) in results.trim_ends { | ||
streets.roads.get_mut(&r).unwrap().trim_end = dist; | ||
} | ||
for (pt, label) in results.debug { | ||
streets.debug_point(pt, label); | ||
} | ||
} | ||
Err(err) => { | ||
error!("Can't make intersection geometry for {}: {}", i.id, err); | ||
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let r = i.roads[0]; | ||
// Don't trim lines back at all | ||
let road = &streets.roads[&r]; | ||
let pt = if road.src_i == i.id { | ||
road.center_line.first_pt() | ||
} else { | ||
road.center_line.last_pt() | ||
}; | ||
set_polygons.push((i.id, Circle::new(pt, Distance::meters(3.0)).to_polygon())); | ||
} | ||
} | ||
} | ||
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for road in streets.roads.values_mut() { | ||
let untrimmed = road.get_untrimmed_center_line(streets.config.driving_side); | ||
if let Some(pl) = | ||
Road::trim_polyline_both_ends(untrimmed.clone(), road.trim_start, road.trim_end) | ||
{ | ||
road.center_line = pl; | ||
} else { | ||
error!("{} got trimmed into oblivion, collapse it later", road.id); | ||
road.center_line = untrimmed; | ||
// Collapse it later | ||
road.internal_junction_road = true; | ||
} | ||
} | ||
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for (i, polygon) in set_polygons { | ||
streets.intersections.get_mut(&i).unwrap().polygon = polygon; | ||
streets.update_geometry(i); | ||
} | ||
} |