Python Mayavi Mlab：绘制八面体

我找不到画八面体的方法。有人能给我指出一门绘制三角形（Translucent）曲面的课程吗

tvtk.tools.visual

似乎只有几个基本形状。

有一个如何使用的示例：

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请你看一下这张照片好吗？

import numpy as np
import mayavi.mlab as ML

verts = [(1,-1,0), (1,1,0), (-1,1,0), (-1,-1,0), (0,0,1), (0,0,-1)]
x, y, z = zip(*verts)
# Each triangle is a 3-tuple of indices. The indices are indices of `verts`.
triangles = [(i, (i+1)%4, j) for i in range(4) for j in (4,5)]
colorval = z
ML.triangular_mesh(x, y, z, triangles, scalars=colorval, opacity=0.75)
ML.show()