diff --git a/shunic/src/shunic/core.clj b/shunic/src/shunic/core.clj
index 3de2eeb..9928304 100644
--- a/shunic/src/shunic/core.clj
+++ b/shunic/src/shunic/core.clj
@@ -17,23 +17,40 @@
   {:color (mod (+ (:color state) 0.7) 255)
    :angle (+ (:angle state) 0.1)})
 
+(defn tri
+  [x y delta]
+  (q/triangle x y x (- y delta) (- x delta)  y)
+  (q/triangle x y x (+ y delta) (- x delta)  y)
+  (q/triangle x y x (- y delta) (- x delta)  y)
+  (q/triangle x y x (+ y delta) (+ x delta)  y))
+
 (defn draw-state [state]
   ; Clear the sketch by filling it with light-grey color.
-  (q/background 240)
+  (q/background 0)
   ; Set circle color.
   (q/fill (:color state) 255 255)
-  (let [x1 100
-        y1 100
-        size 200]
-    (q/rect x1 y1 size size)
-    (q/triangle x1 y1 (+ x1 size) (+ y1 size) (+ x1 size) (+ y1 size)))
+  (q/stroke 55 100)
+  (let [angle (:angle state)
+        size 50
+        x1 (* size (q/cos angle))
+        y1 -50
+        x2 (+ x1 size)
+        y2 (+ y1 size)
+        delta (/ size 2)]
+    (q/with-translation [(/ (q/width) 2)
+                         (/ (q/height) 2)]
+      #_(q/rect x1 y1 size size)
+      (tri x1 y1 (* delta (q/cos angle)))
+      (tri x2 y1 delta)
+      (tri x1 y2 delta)
+      (tri x2 y2 (* delta (q/sin angle)))
+      )
+
   ; Calculate x and y coordinates of the circle.
-  #_(let [angle (:angle state)
-          x (* 150 (q/cos angle))
-          y (* 150 (q/sin angle))]
+    #_(let [angle (:angle state)
+            x (* 150 (q/cos angle))
+            y (* 150 (q/sin angle))]
     ; Move origin point to the center of the sketch.
-      (q/with-translation [(/ (q/width) 2)
-                           (/ (q/height) 2)]
       ; Draw the circle.
         (q/ellipse x y 100 100))))