lib/gruff/pie.rb in gruff-0.0.5 vs lib/gruff/pie.rb in gruff-0.0.6

@@ -1,13 +1,15 @@
 
-require 'gruff/base'
+require File.dirname(__FILE__) + '/base'
 
 class Gruff::Pie < Gruff::Base
 
   def draw
     @show_line_markers = false
     
     super
+
+    return unless @has_data
 
     diameter = @graph_height
     radius = @graph_height / 2.0
     top_x = @graph_left + (@graph_width - diameter) / 2.0
     center_x = @graph_left + (@graph_width / 2.0)