Started implementation of rubella

Dunno why there is no earlier commit...

Map class is probably a little bit too static. I will rewort this later, but
first we'll finish some of the other stuff.

lib/rubella.rb

@@ -0,0 +1,55 @@
+module Rubella
+
+  class Map
+
+    def initialize(input, output, weighting)
+
+      case input
+        when "json" then
+          self.input_json
+        else
+          raise NotImplementedError, "Not supported input type "+input+" given"
+      end
+
+      case output
+        when "image" then
+          self.output_image
+        else
+          raise NotImplementedError, "Not supported output type "+output+" given"
+      end
+
+      case weighting
+        when "per_value" then
+          self.weighting_per_value
+        when "per_overall_load" then
+          self.weighting_per_overall_load
+        when "expotential" then
+          self.weighting_expotential
+        else
+          raise NotImplementedError, "Not supported weighting type "+weighting+" given"
+      end
+      
+    end
+
+    def input_json
+      require "rubella/input/json"
+    end
+
+    def output_image
+      require "rubella/output/image"
+    end
+
+    def weighting_per_value
+      require "rubella/weighting/per_value"
+    end
+
+    def weighting_per_overall_load
+      require "rubella/weighting/per_overall_load"
+    end
+
+    def weighting_expotential
+      require "rubella/weighting/expotential"
+    end
+
+  end
+end

lib/rubella/input/json.rb

@@ -0,0 +1,29 @@
+require 'json'
+
+module Rubella
+  module Input
+
+    #
+    #
+    class JSON
+
+      attr_reader :data
+
+      def initialize(json_string)
+        data = ::JSON::load(json_string)
+      end
+
+      def self.string(json_string)
+        self.new(json_string)
+      end
+
+      def self.file(json_file)
+        self.new File.new(json_file, 'r')
+      end
+
+      # private :new
+
+    end
+
+  end
+end

lib/rubella/weighting/per_value.rb

@@ -0,0 +1,24 @@
+module Rubella
+  module Weigthing
+
+    # Gets an input object and prepares the data for the output.
+    #
+    # This class weights the input data per value.
+    # Which means, that all values together make 100%. So you need all values at
+    # the same level, to get the maximum color intensity.
+    #
+    # The output is an Array which contains again an Array per every point of
+    # time, which contains the load in the given steps (default is 10% per step)
+    # and the value in percentage for the representative olor intensity.
+    #
+    class PerValue
+
+      def initialize
+      end
+
+      
+
+    end
+
+  end
+end