def __init__(self, fractal):
self.fractal = fractal
self.x = cfg.getfloat("Fractal", "origin_x")
self.y = cfg.getfloat("Fractal", "origin_y")
self.depth = 0
self.dist_to_origin = 0
self.parent_orientation = 0
self.segment_count = 4
def mutate(self):
mutate_count = 0
# maybe delete a term
if self.terms and random() > (1 - (cfg.getfloat('Function', 'term_deletion_chance') * len(self.terms))):
self._delete_term()
# potentially create a new term. always do so if there are none.
if not self.terms or random() > (1 - cfg.getfloat('Function', 'term_creation_chance')):
self._add_term()
# modify some term constants
if self.terms:
while mutate_count < cfg.getint('Mutator', 'number_of_terms'):
if random() > cfg.getfloat('Mutator', 'probability'):
t = choice(self.terms)
t.mutate()
mutate_count += 1
def mutate(self):
variability = cfg.getfloat('Mutator', 'variability')
def nonzero_variation():
while True:
v = uniform(-variability, variability)
if v != 0:
return v
self.innerMultiplier += nonzero_variation()
self.outerMultiplier += nonzero_variation()
return self