1. to trokspir :str :dif :str=5][novcic :a+2*:b :d make "n :n-5]while [:n>=2][novcic :a+:b :d make "n :n-2]while [:n>=1][novcic :a :d make "n :n-1]endto krug :r :a :b :csetpc :c setfloodcolor :b circle :r(fill "true) setpc :a circle :rendto novcic :a :dkrug :a 0 [255 255 255] 1prav :a :d 0 [255 255 255] 1krug :a 0 [255 255 255] 1endto prav :r :d :a :b :csetpc :crt 90 bk :r fd 2*:r lt 90 fd :d lt 90 fd 2*:r lt 90 fd :dpu bk :d/2 rt 90 bk :r/2setfloodcolor :b (fill "true) fd :r/2 lt 90 fd :d/2 pd setpc :brepeat 2[lt 90 fd 2*:r lt 90 fd :d]setpc :abk :d lt 90 pu fd 2*:r rt 90 pd fd :d pu rt 90 fd :r rt 90 fd :d pdend