Class: Thwomp::ColorCounter

Inherits:
Struct
  • Object
show all
Defined in:
lib/thwomp/color_counter.rb

Overview

Flattens all colors in given image file and calculates the diversity in used colors We can asume that if the image contains more than 2 colors, we have an interesting image

Constant Summary collapse

FLATTEN_FACTOR = 
4.0

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#image_filename ⇒ Object

Returns the value of attribute image_filename

Returns:

  • (Object) —

    the current value of image_filename



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# File 'lib/thwomp/color_counter.rb', line 6

def image_filename
  @image_filename
end

Instance Method Details

#diversity ⇒ Object

returns the number of different colors



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# File 'lib/thwomp/color_counter.rb', line 11

def diversity
  color_count.keys
end

#empty? ⇒ Boolean

tests if the image is empty

Returns:

  • (Boolean) 


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# File 'lib/thwomp/color_counter.rb', line 16

def empty?
  diversity.size < 2
end

#present? ⇒ Boolean

tests if the image contains an photo

Returns:

  • (Boolean) 


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# File 'lib/thwomp/color_counter.rb', line 21

def present?
  !empty?
end

#valid_png? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/thwomp/color_counter.rb', line 25

def valid_png?
  !!png
end