diff --git a/cubes/project.clj b/cubes/project.clj
index 1abeca5..9788fc2 100644
--- a/cubes/project.clj
+++ b/cubes/project.clj
@@ -4,4 +4,5 @@
   :license {:name "Eclipse Public License"
             :url "http://www.eclipse.org/legal/epl-v10.html"}
   :dependencies [[org.clojure/clojure "1.10.1"]
-                 [quil "4.0.0-SNAPSHOT"]])
+                 [quil "3.1.0"]])
+                 ;[quil "4.0.0-SNAPSHOT"]])
diff --git a/cubes/src/cubes/core.clj b/cubes/src/cubes/core.clj
index 2b290fe..beef046 100644
--- a/cubes/src/cubes/core.clj
+++ b/cubes/src/cubes/core.clj
@@ -23,6 +23,7 @@
    :angle (+ (:angle state) 0.1)})
 
 (def w 50)
+(def h 200)
 (def offset (atom 0))
 
 (defn draw-state [state]
@@ -35,14 +36,15 @@
       (let [angle (:angle state)
             sin (q/sin (+ angle @offset))
             cos (q/cos angle)
-            h (q/map-range sin -1 1 10 w)]
-        (q/rect (- (/ (q/width) 2) i) 0 (- w 2) h)
-        (swap! offset + 0.5)))))
+            h (q/map-range sin -1 1 20 h)]
+        (q/rect (- (/ w 2) (- (/ (q/width) 2) i)) 0 (- w 2) h)
+        (swap! offset + 1.5)))))
 
 (q/defsketch cubes
   :title "You spin my circle right round"
   :size [500 500]
   ; setup function called only once, during sketch initialization.
+  ; :renderer :opengl
   :setup setup
   :settings settings
   ; update-state is called on each iteration before draw-state.