# File lib/compass/sass_extensions/sprites/layout_methods.rb, line 130 def calulate_vertical_postions @images.each_with_index do |image, index| image.left = (image.position.unit_str == "%" ? (@width - image.width) * (image.position.value / 100.0) : image.position.value).to_i next if index == 0 last_image = @images[index-1] image.top = last_image.top + last_image.height + [image.spacing, last_image.spacing].max end end