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from gudhi import CoverComplex
""" This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
Author(s): Vincent Rouvreau
Copyright (C) 2018 Inria
Modification(s):
- YYYY/MM Author: Description of the modification
"""
__author__ = "Vincent Rouvreau"
__copyright__ = "Copyright (C) 2018 Inria"
__license__ = "MIT"
def test_empty_constructor():
# Try to create an empty CoverComplex
cover = CoverComplex()
assert cover.__is_defined() == True
def test_non_existing_file_read():
# Try to open a non existing file
cover = CoverComplex()
assert cover.read_point_cloud("pouetpouettralala.toubiloubabdou") == False
def test_files_creation():
# Create test file
cloud_file = open("cloud", "w")
cloud_file.write("nOFF\n3\n3 0 0\n0 0 0\n2 1 0\n4 0 0")
cloud_file.close()
cover_file = open("cover", "w")
cover_file.write("1\n2\n3")
cover_file.close()
graph_file = open("graph", "w")
graph_file.write("0 1\n0 2\n1 2")
graph_file.close()
def test_nerve():
nerve = CoverComplex()
nerve.set_type("Nerve")
assert nerve.read_point_cloud("cloud") == True
nerve.set_color_from_coordinate()
nerve.set_graph_from_file("graph")
nerve.set_cover_from_file("cover")
nerve.find_simplices()
stree = nerve.create_simplex_tree()
assert stree.num_vertices() == 3
assert (stree.num_simplices() - stree.num_vertices()) == 0
assert stree.dimension() == 0
def test_graph_induced_complex():
gic = CoverComplex()
gic.set_type("GIC")
assert gic.read_point_cloud("cloud") == True
gic.set_color_from_coordinate()
gic.set_graph_from_file("graph")
gic.set_cover_from_file("cover")
gic.find_simplices()
stree = gic.create_simplex_tree()
assert stree.num_vertices() == 3
assert (stree.num_simplices() - stree.num_vertices()) == 4
assert stree.dimension() == 2
def test_voronoi_graph_induced_complex():
gic = CoverComplex()
gic.set_type("GIC")
assert gic.read_point_cloud("cloud") == True
gic.set_color_from_coordinate()
gic.set_graph_from_file("graph")
gic.set_cover_from_Voronoi(2)
gic.find_simplices()
stree = gic.create_simplex_tree()
assert stree.num_vertices() == 2
assert (stree.num_simplices() - stree.num_vertices()) == 1
assert stree.dimension() == 1
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