Add ASCII art output

Just for fun

lib/rubella/output/ascii.rb

@@ -0,0 +1,54 @@
+module Rubella
+  module Output
+
+    class ASCII
+      SHADE_0 = " "
+      SHADE_1 = "░"
+      SHADE_2 = "▒"
+      SHADE_3 = "▓"
+      SHADE_4 = "█"
+
+      def initialize field_size = 1
+        @field_size = field_size
+      end
+
+      def create parsed_list
+        buckets = parsed_list[0].length
+        columns = parsed_list.length
+
+        # image size
+        x = columns*@field_size
+        y = buckets*@field_size
+
+        # start drawing the damn thing
+        ascii_arr = [] 
+        0.upto(buckets).each { |i| ascii_arr[i] = "" }
+
+        parsed_list.each do |point|
+          i = 0
+          point.reverse.each do |part|
+            part = (part*100).to_i
+
+            case part
+              when 0..20 then
+                ascii_arr[i] << SHADE_0
+              when 21..40 then
+                ascii_arr[i] << SHADE_1
+              when 41..60 then
+                ascii_arr[i] << SHADE_2
+              when 61..80 then
+                ascii_arr[i] << SHADE_3
+              else
+                ascii_arr[i] << SHADE_4
+            end
+            i = i+1
+          end
+        end
+
+        ascii_arr.join("\n")
+      end
+
+    end
+
+  end
+end