new

# File lib/minitest/pride.rb, line 83
  def initialize io # :nodoc:
    # walk red, green, and blue around a circle separated by equal thirds.
    #
    # To visualize, type this into wolfram-alpha:
    #
    #   plot (3*sin(x)+3), (3*sin(x+2*pi/3)+3), (3*sin(x+4*pi/3)+3)

    # 6 has wide pretty gradients. 3 == lolcat, about half the width
    @colors = (0...(6 * 7)).map { |n|
      n *= 1.0 / 6
      r  = (3 * Math.sin(n           ) + 3).to_i
      g  = (3 * Math.sin(n + 2 * PI_3) + 3).to_i
      b  = (3 * Math.sin(n + 4 * PI_3) + 3).to_i

      # Then we take rgb and encode them in a single number using base 6.
      # For some mysterious reason, we add 16... to clear the bottom 4 bits?
      # Yes... they're ugly.

      36 * r + 6 * g + b + 16
    }

    super
  end