viewport_width = $(window).width()
ideal_height = parseInt($(window).height() / 2)
summed_width = photos.reduce ((sum, p) -> sum += p.get('aspect_ratio') * ideal_height), 0
rows = Math.round(summed_width / viewport_width)
if rows < 1
# (2a) Fallback to just standard size
photos.each (photo) -> photo.view.resize parseInt(ideal_height * photo.get('aspect_ratio')), ideal_height
else
# (2b) Distribute photos over rows using the aspect ratio as weight
weights = photos.map (p) -> parseInt(p.get('aspect_ratio') * 100)
partition = linear_partition(weights, rows)
# (3) Iterate through partition
index = 0
row_buffer = new Backbone.Collection
_.each partition, (row) ->
row_buffer.reset()
_.each row, -> row_buffer.add(photos.at(index++))
summed_ratios = row_buffer.reduce ((sum, p) -> sum += p.get('aspect_ratio')), 0
row_buffer.each (photo) -> photo.view.resize parseInt(viewport_width / summed_ratios * photo.get('aspect_ratio')), parseInt(viewport_width / summed_ratios)