Class: Falu::DitheredPalette

Inherits:
ImagePalette show all
Defined in:
lib/falu/dithered_palette.rb

Instance Method Summary collapse

Methods inherited from ImagePalette

dump, #image, load

Methods inherited from Palette

#<<, #accent, #accent=, #blues, #darkest, #dominant, dump, #each, #greens, #lightest, load, #map, #primary, #primary=, #reds, #reverse!, #secondary, #secondary=, #sort!, #sort_by!, #sum

Constructor Details

#initialize(image, swatches = nil, **opts) ⇒ DitheredPalette

Returns a new instance of DitheredPalette.



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# File 'lib/falu/dithered_palette.rb', line 6

def initialize(image, swatches=nil, **opts)
  configuration.configure({colors: 20})
  super(image, swatches, **opts)
end

Instance Method Details

#as_json(options = {}) ⇒ Object 



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# File 'lib/falu/dithered_palette.rb', line 33

def as_json(options={})
  super(options).merge({
    colors: colors
  })
end

#swatches ⇒ Object 



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# File 'lib/falu/dithered_palette.rb', line 11

def swatches
  if @swatches.empty?
    @swatches = image.dither(colors, scale: (colors*10), unique: true).sample(0, 0, size: 10, sample: true).map { |swatch| Falu::Swatch.new(swatch[0], 0) }
    image.dither(colors, scale: scale).sample(0, 0, size: size, sample: sample).each do |clr|
      color = Falu::Color.new(clr[0])
      exact = @swatches.index { |s| s.color.hex.to_s == color.hex.to_s }
      unless exact.nil?
        @swatches[exact] += clr[1]
        next
      end

      @swatches.sort { |a,b| b.count <=> a.count }.each_with_index do |swatch, s|
        if [:red, :green, :blue].all? { |c| (swatch.color.rgb.send(c) - color.rgb.send(c)).abs <= 10 }
          @swatches[s] += clr[1]
          break
        end
      end
    end
  end
  @swatches
end