Class: Color::SamplePalette

Inherits:
Palette
  • Object
show all
Includes:
Loggable
Defined in:
lib/color/sample_palette.rb

Instance Attribute Summary

Attributes inherited from Palette

#background, #brightness_end, #brightness_start, #brightness_step, #saturation_end, #saturation_start, #saturation_step

Instance Method Summary collapse

Methods inherited from Palette

#colors_by_hue, #print_as_html, #print_as_text, #print_html_color, #print_html_hue_line

Constructor Details

#initialize(hues, args = Hash.new) ⇒ SamplePalette

Returns a new instance of SamplePalette.



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# File 'lib/color/sample_palette.rb', line 18

def initialize(hues, args = Hash.new)
  super(args)

  n_samples        = args[:samples]
  n_total_samples  = args[:total_samples]
  n_per_hue        = if n_samples
                       hues.collect { n_samples }
                     else
                       Color::distribution(n_total_samples, hues.length)
                     end

  info "n_per_hue: #{n_per_hue}"
  
  @colors = Array.new

  hues.each_with_index do |hue, idx|
    n_per_hue[idx].times do
      # don't keep trying ...
      10.times do
        sat = Color::random_in_range(saturation_start, saturation_end, saturation_step)
        brt = Color::random_in_range(brightness_start, brightness_end, brightness_step)

        hsb = HSB.new hue, sat / 100.0, brt / 100.0

        if @colors.include?(hsb)
          # try, try again
        else
          @colors << hsb
          break
        end
      end
    end
  end
end

Instance Method Details

#colors ⇒ Object 



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# File 'lib/color/sample_palette.rb', line 53

def colors
  @colors
end

#print_html_tables(io = $stdout) ⇒ Object 



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# File 'lib/color/sample_palette.rb', line 57

def print_html_tables(io = $stdout)
  n_columns = 1 + (@brightness_end - @brightness_start) / @brightness_step
  
  colors_by_hue.sort.each do |hue, by_sat|
    io.puts "<table width=\"100%\">"
    io.puts "    <tr>"
    print_html_hue_line(io, hue, 1)
    io.puts "    </tr>"
    
    by_sat.sort.each do |sat, by_brt|
      by_brt.sort.reverse.each do |brt, hsb|
        io.puts "    <tr>"
        print_html_color(io, sat, brt, hsb.to_rgb, 100)
        io.puts "    </tr>"
      end
    end
    io.puts "</table>"
    io.puts "<br/>"
  end
end