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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2025, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* 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/>. *
* *
**************************************************************************/
#include <sstream>
#include "subcomplex/augtrisolidtorus.h"
#include "subcomplex/blockedsfs.h"
#include "subcomplex/blockedsfsloop.h"
#include "subcomplex/blockedsfspair.h"
#include "subcomplex/blockedsfstriple.h"
#include "subcomplex/layeredchainpair.h"
#include "subcomplex/layeredlensspace.h"
#include "subcomplex/layeredloop.h"
#include "subcomplex/layeredtorusbundle.h"
#include "subcomplex/pluggedtorusbundle.h"
#include "subcomplex/plugtrisolidtorus.h"
#include "subcomplex/snappeacensustri.h"
#include "subcomplex/trivialtri.h"
#include "triangulation/dim3.h"
namespace regina {
AbelianGroup StandardTriangulation::homology() const {
throw NotImplemented("The homology() routine is currently not "
"implemented for this particular standard triangulation");
}
std::string StandardTriangulation::name() const {
std::ostringstream ans;
writeName(ans);
return ans.str();
}
std::string StandardTriangulation::texName() const {
std::ostringstream ans;
writeTeXName(ans);
return ans.str();
}
std::unique_ptr<StandardTriangulation> StandardTriangulation::recognise(
Component<3>* comp) {
if (auto ans = TrivialTri::recognise(comp))
return ans;
if (auto ans = LayeredLensSpace::recognise(comp))
return ans;
if (auto ans = LayeredLoop::recognise(comp))
return ans;
if (auto ans = LayeredChainPair::recognise(comp))
return ans;
if (auto ans = AugTriSolidTorus::recognise(comp))
return ans;
if (auto ans = PlugTriSolidTorus::recognise(comp))
return ans;
if (auto ans = LayeredSolidTorus::recognise(comp))
return ans;
if (auto ans = SnapPeaCensusTri::recognise(comp))
return ans;
return nullptr;
}
std::unique_ptr<StandardTriangulation> StandardTriangulation::recognise(
const Triangulation<3>& tri) {
if (tri.countComponents() != 1)
return nullptr;
// Do what we can through components.
if (auto ans = recognise(tri.component(0)))
return ans;
// Run tests that require entire triangulations.
if (auto ans = BlockedSFS::recognise(tri))
return ans;
if (auto ans = LayeredTorusBundle::recognise(tri))
return ans;
// Save non-geometric graph manifolds until last.
if (auto ans = BlockedSFSLoop::recognise(tri))
return ans;
if (auto ans = BlockedSFSPair::recognise(tri))
return ans;
if (auto ans = BlockedSFSTriple::recognise(tri))
return ans;
if (auto ans = PluggedTorusBundle::recognise(tri))
return ans;
// Nup.
return nullptr;
}
} // namespace regina
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