Blender中实现一个Mobius环

from mathutils import *
from math import *
from bpy import *
quad = 30   # 四边形的数量
radius = 4  # 半径
width = 2   # 四边形的高
verts = []
faces = []
for i in range(quad):
    v1 = Vector((0, 0, width/2))
    v2 = -v1
    I = i*2
    for v in [v1, v2]:
        v.rotate(Euler((0, pi * i/quad, 0)))
        v[0] += radius
        v.rotate(Euler((0, 0, pi * I/quad)))
    verts.extend([v1, v2])
    faces.append([I, I+1, I+3, I+2])
faces[-1][-2:] = 0, 1
mesh = data.meshes.new("mobius")
mesh.from_pydata(verts, [], faces)
context.collection.objects.link(data.objects.new("mobius", mesh))