dragon.rb in cf3-0.0.4

- old
+ new

@@ -1,26 +1,28 @@
 # by Martin Prout
 
 require 'cf3'
 
+INV_SQRT = 1 / Math.sqrt(2)
+
 def setup_the_dragon
   @dragon = ContextFree.define do
-
+    
     shape :start do
       dragon alpha: 1
     end
-
+    
     shape :dragon do
       square hue: 0, brightness: 0, saturation: 1, alpha: 0.02
       split do
-        dragon size: 1/Math.sqrt(2), rotation: -45, x: 0.25, y: 0.25
+        dragon size: INV_SQRT, rotation: -45, x: 0.25, y: 0.25
         rewind
-        dragon size: 1/Math.sqrt(2), rotation: 135, x: 0.25, y: 0.25
+        dragon size: INV_SQRT, rotation: 135, x: 0.25, y: 0.25
         rewind
       end
     end
-
+    
   end
 end
 
 def setup
   size 800, 500
@@ -33,8 +35,8 @@
   # Do nothing.
 end
 
 def draw_it
   background 255
-  @dragon.render :start, size: width*0.8,  stop_size: 2,
-                         start_x: width/3, start_y: height/3.5
+  @dragon.render :start, size: width * 0.8,  stop_size: 2,
+  start_x: width/3, start_y: height / 3.5
 end