diff --git a/sketch.js b/sketch.js
index cbc9252..1d3cb0a 100644
--- a/sketch.js
+++ b/sketch.js
@@ -263,14 +263,7 @@ function keyPressed() {
   } else if (key == 'g') {
     polyhedron = !polyhedron;
   } else if (key >= '0' && key <= '9') {
-    make_charges(Math.pow(int(key), 2));
+    make_charges(int(key));
     faces = [];
   }
 }
-
-// TODO draw faces
-// algorithm: choose 3 vertices until 2-partition of other vertices has one empty set
-// done when V - E + F = 2. V is known. count E and F while creating faces
-// when the graph is finished: E = F * 3 / 2
-// V - E + F = V - F * 3 / 2 + F = V - F / 2
-// V * 2 - F = 4