Coffee Skimmer

coffee_skimmer.rb

require "graphics"

class CoffeeSkimmer < Graphics::Simulation
  CLEAR_COLOR = [36, 30, 10]

  def initialize
    super 800, 450, 24
    color.default_proc = -> h, k { k }
    @points = 500.times.map { [rand(3*w)-1*w, rand(3*h)-1*h] }
    @points.concat @points.take(200)
    200.times do
      @points = @points.each_cons(2).map do |(x1, y1), (x2, y2)|
        [x1+(x2-x1)*0.5, y1+(y2-y1)*0.5]
      end
    end
  end

  def draw(ticks)
    clear
    @points.rotate!.take(10).each_cons(2) do |(x1, y1), (x2, y2)|
      line x1, y1, x2, y2, :white
    end
  end
end

CoffeeSkimmer.new.run