Improve splash alignment

examples/demo/stars.lisp

@@ -1,6 +1,29 @@
 ; stars
 (clear)
-;
+; times
+(defn times 
+  (v f) 
+  (
+    (f v) 
+    (if 
+      (gt v 1) 
+      (times 
+        (sub v 1) f))))
+; convert deg to radians
+(defn deg-rad 
+  (deg) 
+  (mul deg 
+    (div PI 180)))
+; position on a circle from angle
+(defn circle-pos 
+  (cx cy r a) {:x 
+  (add cx 
+    (mul r 
+      (cos a))) :y 
+  (add cy 
+    (mul r 
+      (sin a)))})
+; draw
 (defn draw-spoke 
   (cx cy r a) 
   (