Sierpinski square curve: Difference between revisions

=={{header|Sidef}}==

Uses the '''LSystem()''' class from [https://rosettacode.org/wiki/Hilbert_curve#Sidef Hilbert curve].

<lang ruby>var rules = Hash(

x => 'xF-F+F-xF+F+xF-F+F-x',

)

var lsys = LSystem(

width: 510,

height: 510,

xoff: -505,

yoff: -254,

len: 4,

angle: 90,

color: 'dark green',

)

lsys.execute('F+xF+F+xF', 5, "sierpiński_square_curve.png", rules)</lang>

Output image: [https://github.com/trizen/rc/blob/master/img/sierpi%C5%84ski_square_curve-sidef.png Sierpiński square curve]