SettRaziel/ruby_visualization

module DataOutput

  # Child class of {DatasetOutput} to visualize a data set within the dimensions
  # of the calling terminal.
  class ScaledDatasetOutput < ScaledOutput

    # method to print a given dataset scaled by the terminal size
    # @param [DataSeries] data_series the data series from which the dataset
    #    at the provided index should be visualized
    # @param [VisMetaData] meta_data the corresponding meta data
    # @param [Hash] options hash with the relevant parameter values
    def initialize(data_series, meta_data, options)
      prepare_attributes(data_series.series[options[:index]], meta_data, options)
      @legend = ColorLegend::ColorData.new(data_series.min_value,
                                           data_series.max_value)
      print_output_head(options[:index], meta_data)
      print_data(options[:legend], @meta_data.domain_x, @meta_data.domain_y)
    end

    private

    # creates a headline before printing the data set based on the values
    # of the z dimension
    # @param [Integer] index the number of the dataset
    def print_output_head(index, meta_data)
      puts "\nPrinting autoscaled dataset for %.2f" %
            (meta_data.domain_z.lower + (index * meta_data.domain_z.step))
      puts "\n"
    end

    # method to print additional information before the x and y
    # domain informations
    def print_meta_head
        puts "\nScaled Dataset: #{@meta_data.name}"
    end

    # method to print additional information after the x and y
    # domain informations
    def print_meta_tail
      if (@meta_data.domain_z != nil)
        print_domain_information(@meta_data.domain_z, "Z")
      end
    end

  end

end