🐛 fixed 2-vertex cycle

- disallowed closing of cycles with only 2 vertices
rodigu · Apr 7, 2022 · bd627d4 · bd627d4
1 parent e19db1b
commit bd627d4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/network.ts b/network.ts
@@ -1007,7 +1007,9 @@ export class Cycle extends Network {
         edge.to === this.tip_vertex &&
         edge.from === this.loop_vertex);
 
-    return !this.is_closed && edge_has_tip_and_loop_vertex;
+    return (
+      !this.is_closed && edge_has_tip_and_loop_vertex && this.vertices.size > 2
+    );
   }
 
   private canAdd(edge: EdgeArgs) {