Class: WatchDoge::PixelTest

Inherits:
Object
  • Object
show all
Defined in:
lib/watchdoge/pixel_test.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input, reference, **kwargs) ⇒ PixelTest

Returns a new instance of PixelTest.



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# File 'lib/watchdoge/pixel_test.rb', line 51

def initialize input, reference, **kwargs
  @before = reference
  @after = input

  @option = kwargs

  @diff = self.class.diff input, reference
end

Instance Attribute Details

#after ⇒ Object (readonly)

Returns the value of attribute after.



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# File 'lib/watchdoge/pixel_test.rb', line 48

def after
  @after
end

#before ⇒ Object (readonly)

Returns the value of attribute before.



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# File 'lib/watchdoge/pixel_test.rb', line 47

def before
  @before
end

#diff ⇒ Object (readonly)

Returns the value of attribute diff.



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# File 'lib/watchdoge/pixel_test.rb', line 46

def diff
  @diff
end

#option ⇒ Object (readonly)

Returns the value of attribute option.



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# File 'lib/watchdoge/pixel_test.rb', line 49

def option
  @option
end

Class Method Details

.diff(input_image, reference_image, opacity: 0.7, mask_base_color: "#F163FF") ⇒ Object 



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# File 'lib/watchdoge/pixel_test.rb', line 15

def self.diff input_image, reference_image, opacity: 0.7, mask_base_color: "#F163FF"
  return nil if input_image.pixels.hash == reference_image.pixels.hash

  mask_color = mask_base_color.concat (opacity * 256).to_i.to_s(16).upcase

  dup_input_image = input_image.dup

  input_image.height.times do |y|
    pixels = input_image.row(y)

    if y >= reference_image.height
      pixels.each_with_index do |pixel, x|
        dup_input_image.compose_pixel(x, y, mask_color)
      end
    else
      reference_pixels = reference_image.row(y)

      next if (pixels.hash == reference_pixels.hash)

      pixels.each_with_index do |pixel, x|
        if pixels[x] != reference_pixels[x]
          dup_input_image.compose_pixel(x, y, reference_pixels[x])
          dup_input_image.compose_pixel(x, y, mask_color)
        end
      end
    end
  end

  dup_input_image
end

Instance Method Details

#diff? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/watchdoge/pixel_test.rb', line 60

def diff?
  @diff
end