Green Flag. L-System (black) and animation Gif is a sprite (white) curve Sierpinski https://scratch.mit.edu/projects/52419026/
Sierpiński curves are a recursively defined sequence of continuous closed plane fractal curves discovered by Wacław Sierpiński, which in the limit n-->∞ completely fill the unit square: thus their limit curve, also called the Sierpiński curve, is an example of a space-filling curve. The Sierpiński curve is useful in several practical applications because it is more symmetrical than other commonly studied space-filling curves. For example, it has been used as a basis for the rapid construction of an approximate solution to the Travelling Salesman Problem (which asks for the shortest sequence of a given set of points): The heuristic is simply to visit the points in the same sequence as they appear on the Sierpiński curve.
