# File lib/graster.rb, line 150
  def tiled_row_spans y, forward=true
    spans = @image.spans[y]
    return spans if spans.empty?
    tiled_spans = []

    if forward
      @config[:repeat][0].times do |tile|
        spans.each do |span|
          tiled_spans << [x_inches(tile,span[0]), x_inches(tile,span[1])]
        end
      end
    else
      @config[:repeat][0].times.reverse_each do |tile|
        spans.reverse_each do |span|
          tiled_spans << [x_inches(tile,span[1]), x_inches(tile,span[0])]
        end
      end
    end

    return tiled_spans
  end