Class: Tile

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Tile

Returns a new instance of Tile.



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# File 'lib/tiler/tile.rb', line 8

def initialize(args)
  @x        = args[:x]
  @y        = args[:y]
  @z        = args[:z]
  @source   = args[:source] || "sattelite"
end

Instance Attribute Details

#file ⇒ Object

Returns the value of attribute file.



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

def file
  @file
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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

def y
  @y
end

#z ⇒ Object (readonly)

Returns the value of attribute z.



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

def z
  @z
end

Instance Method Details

#download ⇒ Object 



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# File 'lib/tiler/tile.rb', line 19

def download
  open(remote_url) do |image|
    file = Tempfile.new("x_#{x}_y_#{y}_z_#{z}")
    file.write(image.read)
    puts "downloaded #{remote_url} to #{file.path}"
    @file = file
    @local_file_name = file.path
  end
end

#downloaded? ⇒ Boolean

Returns:

  • (Boolean) 


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

def downloaded?
  !@local_file_name.nil?
end

#local_file_name ⇒ Object 



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

def local_file_name
  @local_file_name
end

#remote_url ⇒ Object 



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# File 'lib/tiler/tile.rb', line 15

def remote_url
  "https://khms0.google.com/kh/v=143&src=app&x=#{x}&y=#{y}&z=#{z.to_s}"
end