fix crosswalk coupling in intersection editors, not sure when this broke

docs/design/notes/demand.md

@@ -24,7 +24,8 @@ https://gis-kingcounty.opendata.arcgis.com/datasets/acs-means-of-transportation-
 https://gis-kingcounty.opendata.arcgis.com/datasets/acs-travel-time-to-work-acs-b08303-traveltime
 https://gis-kingcounty.opendata.arcgis.com/datasets/consolidated-demographics-index-for-king-county-census-tracts-demographic-index-area
 https://gis-kingcounty.opendata.arcgis.com/datasets/acs-household-size-by-vehicles-available-acs-b08201-householdvehicles
-
+https://lehd.ces.census.gov/
+https://movement.uber.com/explore/seattle/
 
 - indications of population
 https://gis-kingcounty.opendata.arcgis.com/datasets/acs-total-population-acs-b01003-totalpop

docs/project/references.md

@@ -26,6 +26,8 @@
 - https://commuteseattle.com/
 - https://www.theurbanist.org/
 - https://humantransit.org/2019/03/notes-on-simcity-at-30.html
+- https://mynorthwest.com/category/chokepoints/
+- https://blogs.uw.edu/ceadvice/2019/05/08/infrastructure-week-2019-welcome-uw-cee-students-and-faculty/
 
 ## Similar projects
 

editor/src/edit/traffic_signals.rs

@@ -142,7 +142,7 @@ impl TrafficSignalEditor {
                     Key::Space,
                     &format!("toggle from {:?} to {:?}", cycle.get_priority(id), pri),
                 ) {
-                    cycle.edit_turn(id, pri);
+                    cycle.edit_turn(ui.primary.map.get_t(id), pri);
                     changed = true;
                 }
             }
@@ -201,11 +201,8 @@ impl TrafficSignalEditor {
             } else if has_sidewalks && self.menu.action("add a new pedestrian scramble cycle") {
                 let mut cycle = Cycle::new(self.i, signal.cycles.len());
                 for t in ui.primary.map.get_turns_in_intersection(self.i) {
-                    // edit_turn adds the other_crosswalk_id and asserts no duplicates.
-                    if t.turn_type == TurnType::SharedSidewalkCorner
-                        || (t.turn_type == TurnType::Crosswalk && t.id.src < t.id.dst)
-                    {
-                        cycle.edit_turn(t.id, TurnPriority::Priority);
+                    if t.between_sidewalks() {
+                        cycle.edit_turn(t, TurnPriority::Priority);
                     }
                 }
                 signal.cycles.insert(self.current_cycle, cycle);

map_model/src/stop_signs.rs

@@ -154,7 +154,11 @@ impl ControlStopSign {
     }
 
     pub fn change(&mut self, t: TurnID, pri: TurnPriority, map: &Map) {
+        let turn = map.get_t(t);
         self.turns.insert(t, pri);
+        if turn.turn_type == TurnType::Crosswalk {
+            self.turns.insert(turn.other_crosswalk_id(), pri);
+        }
         self.recalculate_stop_signs(map);
     }
 

map_model/src/traffic_signals.rs

@@ -1,4 +1,4 @@
-use crate::{IntersectionID, Map, RoadID, TurnID, TurnPriority, TurnType};
+use crate::{IntersectionID, Map, RoadID, Turn, TurnID, TurnPriority, TurnType};
 use abstutil::{Error, Timer, Warn};
 use geom::Duration;
 use serde_derive::{Deserialize, Serialize};
@@ -314,13 +314,19 @@ impl Cycle {
         }
     }
 
-    pub fn edit_turn(&mut self, t: TurnID, pri: TurnPriority) {
-        self.priority_turns.remove(&t);
-        self.yield_turns.remove(&t);
-        if pri == TurnPriority::Priority {
-            self.priority_turns.insert(t);
-        } else if pri == TurnPriority::Yield {
-            self.yield_turns.insert(t);
+    pub fn edit_turn(&mut self, t: &Turn, pri: TurnPriority) {
+        let mut ids = vec![t.id];
+        if t.turn_type == TurnType::Crosswalk {
+            ids.push(t.other_crosswalk_id());
+        }
+        for id in ids {
+            self.priority_turns.remove(&id);
+            self.yield_turns.remove(&id);
+            if pri == TurnPriority::Priority {
+                self.priority_turns.insert(id);
+            } else if pri == TurnPriority::Yield {
+                self.yield_turns.insert(id);
+            }
         }
     }
 }

map_model/src/turn.rs

@@ -107,7 +107,7 @@ impl Turn {
     pub fn between_sidewalks(&self) -> bool {
         self.turn_type == TurnType::SharedSidewalkCorner || self.turn_type == TurnType::Crosswalk
     }
-    pub fn other_crosswalk_id(&self) -> TurnID {
+    pub(crate) fn other_crosswalk_id(&self) -> TurnID {
         assert_eq!(self.turn_type, TurnType::Crosswalk);
         TurnID {
             parent: self.id.parent,