Ice Cream
Author: 鮑奕安

A = (-0.03340473526198949, -0.10954436705745185, 0)
B = (-2.118305681363868, 0.06622048584073925, 2)
r = 1
a, c, b = Cone(B, A, r)
D = Point(c)
d = Sphere(B, D)
E = PointIn(d)
e = Sphere(E, B)