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# Regina - A Normal Surface Theory Calculator
# Python Test Suite Component
#
# Copyright (c) 2007-2025, Ben Burton
# For further details contact Ben Burton (bab@debian.org).
#
# Provides various tests for angle structure enumeration.
#
# This file is a single component of Regina's python test suite. To run
# the python test suite, move to the main python directory in the source
# tree and run "make check".
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# As an exception, when this program is distributed through (i) the
# App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or
# (iii) Google Play by Google Inc., then that store may impose any
# digital rights management, device limits and/or redistribution
# restrictions that are required by its terms of service.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
def dumpAngles(name, tri, triName, tautOnly = False):
try:
slist = regina.AngleStructures(tri, tautOnly)
except:
print("-------------------------------")
print(name)
print('ENUMERATION FAILED')
print("-------------------------------")
print()
return
print("-------------------------------")
print(triName)
print(name)
print("-------------------------------")
print()
# Dump the angle structures in sort order, since we don't really mind if
# the ordering changes between releases.
structures = slist.detail().split('\n')
structures.sort()
# Let the text headers appear up top.
structures.reverse()
for s in structures:
print(s)
# Nothing else to say.
print()
def angleStats(tri, triName):
dumpAngles('Vertex angle structures', tri, triName, False)
dumpAngles('Taut angle structures', tri, triName, True)
t = regina.Triangulation3()
angleStats(t, 'Empty triangulation')
angleStats(regina.Example3.figureEight(), 'Figure eight knot complement')
angleStats(regina.Example3.whiteheadLink(), 'Whitehead link complement')
angleStats(regina.Example3.poincare(), 'Poincare homology sphere')
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