draw (Gruff::Net)

    # File lib/gruff/net.rb, line 16
      def draw

        super

        return unless @has_data

        @radius = @graph_height / 2.0
        @center_x = @graph_left + (@graph_width / 2.0)
        @center_y = @graph_top + (@graph_height / 2.0) - 10 # Move graph up a bit

        @x_increment = @graph_width / (@column_count - 1).to_f
        circle_radius = clip_value_if_greater_than(@columns / (@norm_data.first[1].size * 2.5), 5.0)

        @d = @d.stroke_opacity 1.0
        @d = @d.stroke_width clip_value_if_greater_than(@columns / (@norm_data.first[1].size * 4), 5.0)

        if (defined?(@norm_baseline)) then
          level = @graph_top + (@graph_height - @norm_baseline * @graph_height)
          @d = @d.push
          @d.stroke_color @baseline_color
          @d.fill_opacity 0.0
          @d.stroke_dasharray(10, 20)
          @d.stroke_width 5
          @d.line(@graph_left, level, @graph_left + @graph_width, level)
          @d = @d.pop
        end

        @norm_data.each do |data_row|
          prev_x = prev_y = nil
          @d = @d.stroke data_row[DATA_COLOR_INDEX]
          @d = @d.fill data_row[DATA_COLOR_INDEX]

          data_row[1].each_with_index do |data_point, index|
            next if data_point.nil?

            rad_pos = index * Math::PI * 2 / @column_count
            point_distance = data_point * @radius
            start_x = @center_x + Math::sin(rad_pos) * point_distance
            start_y = @center_y - Math::cos(rad_pos) * point_distance

            next_index = index + 1 < data_row[1].length ? index + 1 : 0

            next_rad_pos = next_index * Math::PI * 2 / @column_count
            next_point_distance = data_row[1][next_index] * @radius
            end_x = @center_x + Math::sin(next_rad_pos) * next_point_distance
            end_y = @center_y - Math::cos(next_rad_pos) * next_point_distance

            @d = @d.line(start_x, start_y, end_x, end_y)

            @d = @d.circle(start_x, start_y, start_x - circle_radius, start_y) unless @hide_dots
          end

        end

        @d.draw(@base_image)
      end