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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
import numpy as np
import pytest
import meshplex
@pytest.mark.skip()
def test_line():
X = np.array([0.0, 0.1, 0.4, 1.0])
cells = np.array([[0, 1], [1, 2], [2, 3]])
mesh = meshplex.Mesh(X, cells)
mesh.create_facets()
ref = np.array([0, 1, 2, 3])
assert np.all(mesh.facets["points"] == ref)
ref = np.array(
[
[0, 1],
[1, 2],
[2, 3],
]
)
assert np.all(mesh.cells("facets") == ref)
def test_tri():
X = np.array(
[
[0.0, 0.0],
[1.0, 0.0],
[1.0, 1.0],
[0.0, 1.0],
]
)
cells = np.array([[0, 1, 2], [0, 2, 3]])
mesh = meshplex.Mesh(X, cells)
mesh.create_facets()
ref = np.array(
[
[0, 1],
[0, 2],
[0, 3],
[1, 2],
[2, 3],
]
)
assert np.all(mesh.facets["points"] == ref)
ref = np.array(
[
[3, 1, 0],
[4, 2, 1],
]
)
assert np.all(mesh.cells("facets") == ref)
def test_tetra():
X = np.array(
[
[0.0, 0.0, 0.0],
[1.0, 0.0, 0.0],
[0.0, 1.0, 0.0],
[0.0, 0.0, -1.0],
[0.0, 0.0, 1.0],
]
)
cells = np.array([[0, 1, 2, 3], [0, 1, 2, 4]])
mesh = meshplex.Mesh(X, cells)
mesh.create_facets()
ref = np.array(
[
[0, 1, 2],
[0, 1, 3],
[0, 1, 4],
[0, 2, 3],
[0, 2, 4],
[1, 2, 3],
[1, 2, 4],
]
)
assert np.all(mesh.facets["points"] == ref)
ref = np.array(
[
[5, 3, 1, 0],
[6, 4, 2, 0],
]
)
assert np.all(mesh.cells("facets") == ref)
def test_duplicate_cells():
X = np.array(
[
[0.0, 0.0],
[1.0, 0.0],
[1.0, 1.0],
[0.0, 1.0],
]
)
cells = np.array([[0, 1, 2], [0, 2, 3], [0, 2, 1]])
mesh = meshplex.Mesh(X, cells)
with pytest.raises(meshplex.MeshplexError):
mesh.create_facets()
|
