require 'ruby-processing'

class RotateRectangles < Processing::App
  include Math
  
  def radians(x)
    return x*(PI/180)
  end

  def setup
    color_mode HSB, 100
	background 0
	no_stroke
  end
  
  def draw
    translate width/2, height/2
	rotate radians(45)
    5.times do |i|
	  i += 1
	  fill 30, i*20, 99
	  sz = 60 - i*10
	  rect 0, 0, sz, sz
	end
  end
  
end

RotateRectangles.new :title => "Rotate Rectangles", :width => 400, :height => 400