Axiom: A
derivation length: 24
production:

A :    
	produce [+(60)B][-(60)B]F?P(0,0,0)A

B :
	produce F?P(0,0,0)@O(0.2)B

?P(x,y,z) :
    if 4*y*y +(z-10)**2 > 100:
        produce [+(2*z)F][-(2*z)F]%
    else:
        produce *
###### INITIALISATION ######

__copyright__ = """open-source GPL"""
__institutes__ = """INRIA - CIRAD Virtual Plants"""
__authors__ = """C. Godin, F. Boudon"""
