def two_sphere(x, y, z):
rad1 = 1
center1 = [1, 0, 0]
rad2 = 1
center2 = [-1, 0, 0]
r = min(dist([x, y, z], center1), dist([x, y, z], center2))
return (r < rad)
def cyl(x, y, z):
rad = 1
center = [3, 3]
r = dist([x, y], center)
return (r < rad)
def sphere(x, y, z):
rad = 1
center = [0, 0, 0]
r = dist([x, y, z], center)
return (r < rad)