Class: ZXing::FFI::Binarizer

Inherits:
Object
  • Object
show all
Includes:
Binarizer
Defined in:
lib/zxing/ffi/binarizer.rb

Instance Attribute Summary collapse

Attributes included from Binarizer

#native

Instance Method Summary collapse

Constructor Details

#initialize(ptr, source) ⇒ Binarizer

Returns a new instance of Binarizer.



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# File 'lib/zxing/ffi/binarizer.rb', line 6

def initialize ptr, source
  super ZXing::FFI::Library::BinarizerPointer.new ptr
  @source = source
end

Instance Attribute Details

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/zxing/ffi/binarizer.rb', line 10

def source
  @source
end

Instance Method Details

#black_matrix ⇒ Object 



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# File 'lib/zxing/ffi/binarizer.rb', line 11

def black_matrix
  ZXing::FFI::Common::BitMatrix.new ZXing::FFI::Library.Binarizer_black_matrix(native)
end

#image ⇒ Object 



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# File 'lib/zxing/ffi/binarizer.rb', line 14

def image
  width = source.width
  height = source.height
  image = Magick::Image.new width, height
  (0...height).each do |row|
    (0...width).each do |column|
      image.pixel_color(column, row, black_matrix.get(column, row) ? "black" : "white")
    end
  end
  return image
end