debugging for intersections

editor/src/plugins/selection.rs

@@ -100,6 +100,14 @@ impl SelectionState {
                     false
                 }
             }
+            SelectionState::SelectedIntersection(id) => {
+                if input.key_pressed(Key::D, "debug") {
+                    map.get_i(*id).dump_debug();
+                    true
+                } else {
+                    false
+                }
+            }
             _ => false,
         };
         if let Some(s) = new_state {

map_model/src/intersection.rs

@@ -1,5 +1,6 @@
 // Copyright 2018 Google LLC, licensed under http://www.apache.org/licenses/LICENSE-2.0
 
+use abstutil;
 use dimensioned::si;
 use geom::Pt2D;
 use std::collections::HashSet;
@@ -43,4 +44,8 @@ impl Intersection {
         }
         roads.len() == 1
     }
+
+    pub fn dump_debug(&self) {
+        println!("{}", abstutil::to_json(self));
+    }
 }