examples/pi_polygon.rb in graphics-1.0.0b6 vs examples/pi_polygon.rb in graphics-1.0.0

@@ -25,11 +25,10 @@
   def add vertex
     self << vertex
 
     if size > 2
       sort_radar
-      SDL::WM.set_caption compute_pi, ''
     end
   end
 
   ##
   # Sort vertex like a radar, by angle to center
@@ -63,12 +62,12 @@
   def initialize w, magnitude
     super w
     self.trail = Graphics::Trail.new(w, 6, color = :red)
     @s = w
     @r = w.r
-    @x = rand(w.screen.w/4) + w.r
-    @y = rand(w.screen.h/4) + w.r
+    @x = rand(w.renderer.w/4) + w.r
+    @y = rand(w.renderer.h/4) + w.r
     @a = random_angle
     @m = magnitude
   end
 
   def target_point
@@ -131,9 +130,15 @@
     super @r * 2, @r * 2
     @poly = Polygnome.new @r, @r, self
     @balls = []
     register_bodies @balls
     BALLS.times { @balls << Bouncer.new(self, MAGND) }
+  end
+
+  def update n
+    super
+
+    self.renderer.title = poly.compute_pi
   end
 
   def draw n
     super
     circle @r, @r, @r, :green