获取3D点是否在棱镜内部

Question

我试图确定一个点是否在棱镜（在本例中为立方体）内。我尝试使用Shapely，但似乎只能在2维上使用

from shapely.geometry import Point
from shapely.geometry.polygon import Polygon

point = Point(0.5,0.5,0)
polygon = Polygon([(0,0,0), (0,1,0), (1,1,0), (1,0,0),(0,0,1), (0,1,1), (1,1,1), (1,0,1)])
print(polygon.contains(point))
False

point = Point(0.5,0.5)
polygon = Polygon([(0,0), (0,1), (1,1), (1,0)])
print(polygon.contains(point))
True

是否正确定义了3D点？