Class: TilesCollection

Inherits:
Object
  • Object
show all
Defined in:
lib/tiler/tiles.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ TilesCollection

Returns a new instance of TilesCollection.



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# File 'lib/tiler/tiles.rb', line 6

def initialize(args)
  @zoom    = args[:zoom]
  @source  = args[:source] || "sattelite"
  @start_x = args[:start_x]
  @start_y = args[:start_y]
  @end_x   = args[:end_x]
  @end_y   = args[:end_y]
  @output  = args[:output]
  save_tiles
end

Instance Attribute Details

#dir ⇒ Object

Returns the value of attribute dir.



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# File 'lib/tiler/tiles.rb', line 3

def dir
  @dir
end

#end ⇒ Object (readonly)

Returns the value of attribute end.



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# File 'lib/tiler/tiles.rb', line 4

def end
  @end
end

#output_file ⇒ Object

Returns the value of attribute output_file.



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# File 'lib/tiler/tiles.rb', line 3

def output_file
  @output_file
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/tiler/tiles.rb', line 3

def source
  @source
end

#start ⇒ Object (readonly)

Returns the value of attribute start.



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# File 'lib/tiler/tiles.rb', line 4

def start
  @start
end

#zoom ⇒ Object

Returns the value of attribute zoom.



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# File 'lib/tiler/tiles.rb', line 3

def zoom
  @zoom
end

Instance Method Details

#all ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 29

def all
  @tiles
end

#cleanup ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 70

def cleanup
  flatten.each do |tile| 
    tile.file.close
    tile.file.unlink
  end
  delete_temp_dir
end

#columns ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 25

def columns
  @start_x.upto(@end_x)
end

#create_temp_dir ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 56

def create_temp_dir
  @dir = Dir.mktmpdir
end

#delete_temp_dir ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 61

def delete_temp_dir
  FileUtils.remove_entry_secure dir if dir
end

#download ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 65

def download
  create_temp_dir
  flatten.each{ |tile| tile.download(dir) }
end

#flatten ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 33

def flatten
  rows.map do |y|
    columns.map do |x|
      tile(x,y)
    end
  end.flatten
end

#rows ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 21

def rows
  @start_y.upto(@end_y)
end

#save_tile(x, y, tile) ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 41

def save_tile(x,y,tile)
  @tiles[y] = {} unless @tiles[y]
  @tiles[y][x] = tile
end

#save_tiles ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 46

def save_tiles
  @tiles = {}
  rows.map do |y|
    columns.map do |x|
      save_tile(x,y,Tile.new(x: x, y: y, z: @zoom))
    end
  end
end

#stitch ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 78

def stitch
  output_data = Magick::ImageList.new
  columns.each do |column|
    col = Magick::ImageList.new
    rows.each do |row|
      col.push(Magick::Image.read(tile(column,row).local_file_name).first)
    end
    output_data.push(col.append(true))
  end
  output_data.append(false).write(@output)
end

#tile(x, y) ⇒ Object 



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# File 'lib/tiler/tiles.rb', line 17

def tile(x,y)
  @tiles[y][x]
end