1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
# Copyright (c) 2022, Manfred Moitzi
# License: MIT License
import pytest
from ezdxf.addons import MengerSponge
@pytest.fixture(scope="module")
def mesh():
return MengerSponge().mesh()
def test_euler_characteristic_for_menger_sponge(mesh):
"""The euler characteristic does not work for non-convex meshes."""
diag = mesh.diagnose()
assert diag.euler_characteristic == -8
def test_edge_balance_for_menger_sponge(mesh):
""" The is_edge_balance_broken property is not reliable for concave meshes
each edge connects two faces
"""
diag = mesh.diagnose()
assert diag.is_edge_balance_broken is False
def test_menger_sponge_is_non_manifold(mesh):
diag = mesh.diagnose()
assert diag.is_manifold is True
def test_menger_sponge_face_count(mesh):
assert len(mesh.faces) == 72
def test_menger_sponge_edge_count(mesh):
assert len(mesh.vertices) == 64
if __name__ == '__main__':
pytest.main([__file__])
|
