Module: Imogen::Dzi

Defined in:
lib/imogen/dzi.rb

Class Method Summary collapse

Class Method Details

.convert(img, dest_dir, format = :jpeg, opts = {}) ⇒ Object 



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# File 'lib/imogen/dzi.rb', line 5

def self.convert(img,dest_dir,format=:jpeg,opts={})
  override = opts[:override]
  
end

.iiif_opts_for_dzi(level, max_levels, col, row, tile_size = 128, format = :jpeg) ⇒ Object 



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# File 'lib/imogen/dzi.rb', line 31

def self.iiif_opts_for_dzi(level,max_levels,col,row,tile_size=128,format=:jpeg)
  level = level.to_i
  max_levels = max_levels.to_i
  c_ratio = 2**(max_levels-level)

  tile_side = tile_size*c_ratio
  x = col * c_ratio
  y = row * c_ratio
  {
    region: "#{x},#{y},#{tile_side},#{tile_side}",
    size: "!#{tile_size},#{tile_size}",
    format: format,
    rotation: 0,
    quality: :native
  }
end

.iiif_path_for_dzi(level, max_levels, col, row, tile_size = 512, format = :jpeg) ⇒ Object 



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# File 'lib/imogen/dzi.rb', line 47

def self.iiif_path_for_dzi(level,max_levels,col,row,tile_size=512,format=:jpeg)
  opts = iiif_opts_for_dzi(level, max_levels,col,row,tile_size,format)
  "#{opts[:region]}/#{opts[:size]}/#{opts[:rotation]}/#{opts[:quality]}.#{Imogen::Iiif::FORMATS[format]}"
end

.iiif_paths(img, tile_size = 128, format = :jpeg) ⇒ Object 



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# File 'lib/imogen/dzi.rb', line 9

def self.iiif_paths(img,tile_size=128,format=:jpeg)
  width, height = img.width, img.height
  max_levels = Imogen::Zoomable.max_levels_for(width, height)
  results = {}
  max_levels.downto(0) do |level|
    c_ratio = 2**(max_levels-level)

    tile_side = tile_size*c_ratio
    x, col = 0, 0
    while x < width
      y, row = 0, 0
      while y < height
        results["#{level}/#{col_count}_#{row_count}"] = iiif_path_for_dzi(level,max_levels,col,row,tile_size,format)
        y += tile_side
        row += 1
      end
      x += tile_side
      col += 1
    end

  end
end