Hexagonal Gosper curve

For an explanation see L-systems.

var level = 3; var axiom = 'XF'; var rules = { 'F' : 'F', 'X' : 'X+YF++YF-FX--FXFX-YF+', 'Y' : '-FX+YFYF++YF+FX--FX-Y', '+' : '+', '-' : '-' }; var symbols = { 'F':'F', 'X':' ', 'Y':' ', '+':'+', '-':'-', '[':'[', ']':']' } ; var angle = 60; var len = 500/Math.pow(3,level); t.setPos(250,0);

• Przemyslaw Prusinkiewicz, James Hanan: Lindenmayer Systems, Fractals, and Plants (Lecture Notes in Biomathematics). Springer-Verlag 1989, ISBN 0-387-97092-4
• http://en.wikipedia.org/wiki/L-system