Class: AsciiArt
- Inherits:
-
Object
- Object
- AsciiArt
- Defined in:
- lib/asciiart.rb,
lib/asciiart/version.rb
Constant Summary collapse
- VERSION =
"0.0.2"
Instance Attribute Summary collapse
-
#file ⇒ Object
readonly
Returns the value of attribute file.
- #image_chars ⇒ Object
Instance Method Summary collapse
-
#initialize(path_to_file) ⇒ AsciiArt
constructor
A new instance of AsciiArt.
- #to_ascii_art ⇒ Object
Constructor Details
#initialize(path_to_file) ⇒ AsciiArt
Returns a new instance of AsciiArt.
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# File 'lib/asciiart.rb', line 9 def initialize(path_to_file) @file = File.new(path_to_file, "r") @data = file.read self end |
Instance Attribute Details
#file ⇒ Object (readonly)
Returns the value of attribute file.
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# File 'lib/asciiart.rb', line 6 def file @file end |
#image_chars ⇒ Object
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# File 'lib/asciiart.rb', line 48 def image_chars @image_chars ||= [" ", ".", "~", ":", "+", "=", "o", "*", "x", "^", "%", "#", "@", "$", "M", "W"] end |
Instance Method Details
#to_ascii_art ⇒ Object
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# File 'lib/asciiart.rb', line 16 def to_ascii_art img = Magick::Image.from_blob(@data).first new_width = 100 scale = (new_width.to_f / img.columns) new_height = ((img.rows * scale) / 2).to_i img.resize!(new_width, new_height) img = img.quantize(image_chars.length, Magick::GRAYColorspace) img = img.normalize quantum_calc = Magick::QuantumRange / Magick::QuantumPixel.to_i output = "" border = '+' + ('-' * new_width) + '+' + "\n" output << border img.view(0, 0, new_width, new_height) do |view| new_height.times do |i| output << '|' new_width.times { |j| output << image_chars[view[i][j].red/quantum_calc] } output << "|\n" end end output << border output end |