pixel_class.rb

class Pixel
  attr_accessor :position, :color, :brightness, :shape, :states
  
  def self.update_pixels
    timestamp = Time.now
    
  end
  
  def initialize initial_position=Position.new (0,0,0), initial_color=Color.new 'black',+
                  initial_brightness=Brightness.new 0.upto 1000
    begin
      @position   = initial_position
      @color      = initial_color
      @brightness = initial_brightness
      @shape      = Square.new 1, 1
      @states     = [].unshift [Time.now, self]
    end
  end
  
  def state
    "#{self}: 
    \tposition: #{@position}
    \tcolor: #{@color}
    \tbrightness: #{@brightness}
    \tshape: #{@shape}"
  end
  
  def color= new_color
    case new_color
      when Color then
        if @color.same_as? new_color then return @color
        color = new_color
      when 
    end
    
  end
end