boids.py 文件源码

def __init__(self, init_num, size, stp):
    self.num = init_num
    self.size = size
    self.stp = stp
    self.one = 1.0/size

    self.rad = 0.04

    edge = 0.2
    self.xy = edge + random((init_num, 2))*(1.0-2*edge)

    self.v = zeros((init_num, 2), 'float')
    self.dx = zeros((init_num, 2), 'float')
    self.random_velocity(self.stp)
    self.tree = kdtree(self.xy)

    self.slowdown = 0.99999