Method: Fleximage::Operator::Base.color

Defined in:
lib/fleximage/operator/base.rb

.color(*args) ⇒ Object

This method will return a valid color Magick::Pixel object. It will also auto adjust for the bit depth of your ImageMagick configuration.

Usage:

color('red')          #=> Magick::Pixel with a red color
color(0, 255, 0)      #=> Magick::Pixel with a green color
color(0, 0, 255, 47)  #=> Magick::Pixel with a blue clolor and slightly transparent

# on an ImageMagick with a QuantumDepth of 16
color(0, 255, 0)      #=> Magick::Pixel with rgb of (0, 65535, 0) (auto adjusted to 16bit channels)



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# File 'lib/fleximage/operator/base.rb', line 82

def self.color(*args)
  if args.size == 1 && args.first.is_a?(String)
    args.first
  else
    
    # adjust color to proper bit depth
    if Magick::QuantumDepth != 8
      max = case Magick::QuantumDepth
      when 16
        65_535
      when 32
        4_294_967_295
      end
      
      args.map! do |value|
        (value.to_f/255 * max).to_i
      end
    end
    
    # create the pixel
    Magick::Pixel.new(*args)
  end
end