fix(autorouter/ratline): Don't count ratlines with shared endpoint as intersecting

committed.toml

@@ -28,6 +28,7 @@ allowed_scopes = [
   "autorouter/place_via",
   "autorouter/pointroute",
   "autorouter/ratsnest",
+  "autorouter/ratline",
   "autorouter/remove_bands",
   "autorouter/selection",
   "drawing/band",

src/autorouter/ratline.rs

@@ -81,6 +81,25 @@ impl<'a, M: AccessMesadata> RatlineRef<'a, M> {
             .ratsnest()
             .graph()
             .edge_indices()
+            .filter(move |other| {
+                let (self_source, self_target) = self
+                    .autorouter
+                    .ratsnest
+                    .graph()
+                    .edge_endpoints(self.index)
+                    .unwrap();
+                let (other_source, other_target) = self
+                    .autorouter
+                    .ratsnest
+                    .graph()
+                    .edge_endpoints(*other)
+                    .unwrap();
+
+                self_source != other_source
+                    && self_source != other_target
+                    && self_target != other_source
+                    && self_target != other_target
+            })
             .filter(move |other| {
                 let other_line = other.ref_(self.autorouter).line();