JavaScriptCollection
diff --git a/‎d3.js‎
Lines changed: 3 additions & 5 deletions b/‎d3.js‎
Lines changed: 3 additions & 5 deletions
@@ -4832,17 +4832,15 @@ d3 = function() {
       edge[0] = vertex;
       edge.l = lSite;
       edge.r = rSite;
-    } else if (edge.l === rSite) {
-      edge[1] = vertex;
     } else {
-      edge[0] = vertex;
+      edge[+(edge.l === rSite)] = vertex;
     }
   }
   function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
-    var va = edge[0], vb = edge[1];
+    var i = +(edge.l !== lSite), va = edge[1 - i], vb = edge[i];
     this.edge = edge;
     this.site = lSite;
-    this.angle = rSite ? Math.atan2(rSite[1] - lSite[1], rSite[0] - lSite[0]) : edge.l === lSite ? Math.atan2(vb[0] - va[0], va[1] - vb[1]) : Math.atan2(va[0] - vb[0], vb[1] - va[1]);
+    this.angle = rSite ? Math.atan2(rSite[1] - lSite[1], rSite[0] - lSite[0]) : Math.atan2(vb[0] - va[0], va[1] - vb[1]);
   }
   d3_geom_voronoiHalfEdge.prototype = {
     start: function() {