sidef-scripts/Image/sierpinski_triangle.sf

#!/usr/bin/ruby

include('LSystem/LSystem.sf')

var rules = Hash(
    S => 'S--S--S--T',
    T => 'TT',
);

var lsys = LSystem(
    width:  1000,
    height: 1000,

    scale: 1,
    xoff: -980,
    yoff: -100,

    len:   15,
    angle: 120,
    turn:  30,
    color: 'dark red',
);

lsys.execute('S--S--S', 7, "sierpinksi_triangle.png", rules);