Class: Kracker::Zooka::Analyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/kracker/zooka/analyzer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Analyzer

Returns a new instance of Analyzer.



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# File 'lib/kracker/zooka/analyzer.rb', line 9

def initialize(options = {})
  @tolerance = Tolerance.new
  @ignore_antialiasing = false
  @ignore_colors = false
  @noncompliant_pixels = []

  if options.has_key?(:image_1)
    @image_1 = options[:image_1]
  elsif options.has_key?(:filename_1)
    @image_1 = ChunkyPNG::Image.from_file(options[:filename_1])
  else
    @image_1 = nil
  end

  if options.has_key?(:image_2)
    @image_2 = options[:image_2]
  elsif options.has_key?(:filename_2)
    @image_2 = ChunkyPNG::Image.from_file(options[:filename_2])
  else
    @image_2 = nil
  end
end

Instance Attribute Details

#ignore_antialiasing ⇒ Object

Returns the value of attribute ignore_antialiasing.



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# File 'lib/kracker/zooka/analyzer.rb', line 4

def ignore_antialiasing
  @ignore_antialiasing
end

#ignore_colors ⇒ Object

Returns the value of attribute ignore_colors.



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# File 'lib/kracker/zooka/analyzer.rb', line 4

def ignore_colors
  @ignore_colors
end

#image_1 ⇒ Object

Returns the value of attribute image_1.



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# File 'lib/kracker/zooka/analyzer.rb', line 5

def image_1
  @image_1
end

#image_2 ⇒ Object

Returns the value of attribute image_2.



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# File 'lib/kracker/zooka/analyzer.rb', line 5

def image_2
  @image_2
end

#noncompliant_pixels ⇒ Object (readonly)

Returns the value of attribute noncompliant_pixels.



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# File 'lib/kracker/zooka/analyzer.rb', line 7

def noncompliant_pixels
  @noncompliant_pixels
end

#result ⇒ Object (readonly)

Returns the value of attribute result.



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# File 'lib/kracker/zooka/analyzer.rb', line 6

def result
  @result
end

#tolerance ⇒ Object

Returns the value of attribute tolerance.



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# File 'lib/kracker/zooka/analyzer.rb', line 4

def tolerance
  @tolerance
end

Instance Method Details

#analyze ⇒ Object 



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# File 'lib/kracker/zooka/analyzer.rb', line 32

def analyze
  @noncompliant_pixels = []
  @result = ChunkyPNG::Image.new(@image_1.width, @image_1.height, ChunkyPNG::Color::TRANSPARENT)

  @image_1.width.times do |x|
    @image_1.height.times do |y|
      pix_1 = Pixel.new(@image_1[x, y])
      pix_2 = Pixel.new(@image_2[x, y])

       if @ignore_colors
        if brightness_similar?(pix_1, pix_2)
          @result[x, y] = ChunkyPNG::Color::rgba(pix_1.red, pix_1.green, pix_1.blue, pix_1.alpha / 10)
        else
          @result[x, y] = ChunkyPNG::Color::rgba(255, 0, 0, 100)
          @noncompliant_pixels << { x: x, y: y }
        end
      else
        if rgb_similar?(pix_1, pix_2)
          @result[x, y] = ChunkyPNG::Color::rgba(pix_1.red, pix_1.green, pix_1.blue, pix_1.alpha / 10)
        elsif @ignore_antialiasing && (antialiased?(@image_1, x, y)  || antialiased?(@image_2, x, y))
          if brightness_similar?(pix_1, pix_2)
            @result[x, y] = ChunkyPNG::Color::rgba(pix_1.red, pix_1.green, pix_1.blue, pix_1.alpha / 10)
          else
            @result[x, y] = ChunkyPNG::Color::rgba(255, 0, 0, 100)
            @noncompliant_pixels << { x: x, y: y }
          end
        else
          @result[x, y] = ChunkyPNG::Color::rgba(255, 0, 0, 100)
          @noncompliant_pixels << { x: x, y: y }
        end
      end
    end
  end
end

#same? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kracker/zooka/analyzer.rb', line 67

def same?
  @noncompliant_pixels.count == 0
end