40 lines
978 B
Python
40 lines
978 B
Python
from math import pow, sin, pi
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from random import Random
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rand = Random()
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class Individual(object):
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def __init__(self):
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self.x = rand.uniform(-100000, 100000)
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self.y = rand.uniform(-100000, 100000)
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@classmethod
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def from_params(cls, x, y):
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new_individual = Individual()
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new_individual.x = x
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new_individual.y = y
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return new_individual
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def __str__(self):
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return "x: %f\ty: %f\tfit: %f\n" %\
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(self.x, self.y, self.fitness)
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def fitness(self):
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x = self.x
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y = self.y
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n = 9
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return pow(15*x*y*(1-x)*(1-y)*sin(n*pi*x)*sin(n*pi*y), 2)
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def crossover(self, spouse):
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one = Individual.from_params(spouse.x, self.y)
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two = Individual.from_params(self.x, spouse.y)
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return one, two
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def mutate(self):
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if rand.randint(1, 10) % 2 == 0:
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self.x = self.rand.random()
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else:
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self.y = self.rand.random()
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