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
|
import unittest
import gudhi
class TestAlphaComplex(unittest.TestCase):
def test_infinite_alpha(self):
point_list=[[0,0],[1,0],[0,1],[1,1]]
alpha_complex = gudhi.AlphaComplex(points=point_list)
self.assertEqual(alpha_complex.num_simplices(), 11)
self.assertEqual(alpha_complex.num_vertices(), 4)
self.assertEqual(alpha_complex.get_filtered_tree(), [([0], 0.0), ([1], 0.0), ([2], 0.0), ([3], 0.0), ([0, 1], 0.25), ([0, 2], 0.25), ([1, 3], 0.25), ([2, 3], 0.25), ([1, 2], 0.5), ([0, 1, 2], 0.5), ([1, 2, 3], 0.5)])
self.assertEqual(alpha_complex.get_star_tree([0]), [([0], 0.0), ([0, 1], 0.25), ([0, 1, 2], 0.5), ([0, 2], 0.25)])
self.assertEqual(alpha_complex.get_coface_tree([0], 1), [([0, 1], 0.25), ([0, 2], 0.25)])
self.assertEqual(point_list[0], alpha_complex.get_point(0))
self.assertEqual(point_list[1], alpha_complex.get_point(1))
self.assertEqual(point_list[2], alpha_complex.get_point(2))
self.assertEqual(point_list[3], alpha_complex.get_point(3))
self.assertEqual([], alpha_complex.get_point(4))
self.assertEqual([], alpha_complex.get_point(125))
def test_filtered_alpha(self):
point_list=[[0,0],[1,0],[0,1],[1,1]]
filtered_alpha = gudhi.AlphaComplex(points=point_list,max_alpha_square=0.25)
self.assertEqual(filtered_alpha.num_simplices(), 8)
self.assertEqual(filtered_alpha.num_vertices(), 4)
self.assertEqual(point_list[0], filtered_alpha.get_point(0))
self.assertEqual(point_list[1], filtered_alpha.get_point(1))
self.assertEqual(point_list[2], filtered_alpha.get_point(2))
self.assertEqual(point_list[3], filtered_alpha.get_point(3))
self.assertEqual([], filtered_alpha.get_point(4))
self.assertEqual([], filtered_alpha.get_point(125))
self.assertEqual(filtered_alpha.get_filtered_tree(), [([0], 0.0), ([1], 0.0), ([2], 0.0), ([3], 0.0), ([0, 1], 0.25), ([0, 2], 0.25), ([1, 3], 0.25), ([2, 3], 0.25)])
self.assertEqual(filtered_alpha.get_star_tree([0]), [([0], 0.0), ([0, 1], 0.25), ([0, 2], 0.25)])
self.assertEqual(filtered_alpha.get_coface_tree([0], 1), [([0, 1], 0.25), ([0, 2], 0.25)])
if __name__ == '__main__':
unittest.main()
|
