Module: ColorDiff

Defined in:
lib/color_diff.rb,
lib/color_diff/list.rb,
lib/color_diff/version.rb,
lib/color_diff/ciede2000.rb,
lib/color_diff/color/lab.rb,
lib/color_diff/color/rgb.rb,
lib/color_diff/color/xyz.rb

Defined Under Namespace

Modules: Color Classes: Ciede2000, List

Constant Summary collapse

VERSION = 
'0.1'

Class Method Summary collapse

Class Method Details

.between(lab1, lab2) ⇒ Object

Color Diff

Color Diff contains a number of methods to assist in measuring how similar or dissimilar colors are from one another

Simple Comparison

Two color objects can be compared like so:

yellow = ColorDiff::Color::RGB.new(255, 255, 0)
gold   = ColorDiff::Color::RGB.new(255, 215, 0)
ColorDiff.between(yellow, gold) => 11.584521223499245

The higher the result the more dissimilar the colors, e.g.

blue = ColorDiff::Color::RGB.new(0, 0, 255)
red  = ColorDiff::Color::RGB.new(255, 0, 0)
ColorDiff.between(blue, red) => 52.87867414046132

See ColorDiff::List for example of more complex comparisons



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# File 'lib/color_diff.rb', line 29

def self.between(lab1, lab2)
  lab1 = lab1.to_lab unless lab1.is_a? Color::Lab
  lab2 = lab2.to_lab unless lab2.is_a? Color::Lab

  ColorDiff::Ciede2000.diff(lab1, lab2)
end