One well-known symbol of the philosophy of duality known as yin and yang is the taijitu.



Task

   Create a function that, given a parameter representing size, generates such a symbol scaled to the requested size.
   Generate and display the symbol for two different (small) sizes.


[ $ "turtleduck.qky" loadfile ] now!
 
  [ -1 4 turn
    2dup -v fly
    1 4 turn 
    4 wide
    ' [ 0 0 0 ] colour
    ' [ 0 0 0 ] fill 
      [ 2dup 2 1 v/ 1 2 arc
        2dup -2 1 v/ 1 2 arc
        2dup -v 1 2 arc ] 
    2dup -v 1 2 arc
    1 4 turn
    2dup 2 1 v/ fly
    ' [ 0 0 0 ] colour
    1 wide
    ' [ 255 255 255 ] fill 
      [ 2dup 7 1 v/ circle ]
    2dup fly
    ' [ 255 255 255 ] colour
    ' [ 0 0 0 ] fill 
      [ 2dup 7 1 v/ circle ]
    -2 1 v/ fly 
    -1 4 turn ]               is yinyang ( n/d --> )
 
  turtle
 -110 1 fly
  100 1 yinyang
  420 1 fly
  300 1 yinyang