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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2008, 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. *
* *
* 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, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
* MA 02110-1301, USA. *
* *
**************************************************************************/
/* end stub */
#include "manifold/nsnappeacensusmfd.h"
#include "subcomplex/nsnappeacensustri.h"
#include "triangulation/nexampletriangulation.h"
#include "triangulation/ntriangulation.h"
namespace regina {
const char NSnapPeaCensusManifold::SEC_5 = 'm';
const char NSnapPeaCensusManifold::SEC_6_OR = 's';
const char NSnapPeaCensusManifold::SEC_6_NOR = 'x';
const char NSnapPeaCensusManifold::SEC_7_OR = 'v';
const char NSnapPeaCensusManifold::SEC_7_NOR = 'y';
NTriangulation* NSnapPeaCensusManifold::construct() const {
NTriangulation* ans = 0;
if (section == SEC_5) {
if (index == 0) {
ans = NExampleTriangulation::gieseking();
ans->setPacketLabel("");
} else if (index == 1) {
NTetrahedron* r = new NTetrahedron();
NTetrahedron* s = new NTetrahedron();
r->joinTo(0, s, NPerm(0, 1, 3, 2));
r->joinTo(1, s, NPerm(2, 3, 1, 0));
r->joinTo(2, s, NPerm(3, 2, 1, 0));
r->joinTo(3, s, NPerm(1, 0, 3, 2));
ans = new NTriangulation();
ans->addTetrahedron(r);
ans->addTetrahedron(s);
} else if (index == 2) {
NTetrahedron* r = new NTetrahedron();
NTetrahedron* s = new NTetrahedron();
r->joinTo(0, s, NPerm(0, 1, 3, 2));
r->joinTo(1, s, NPerm(3, 1, 2, 0));
r->joinTo(2, s, NPerm(2, 1, 3, 0));
r->joinTo(3, s, NPerm(3, 1, 0, 2));
ans = new NTriangulation();
ans->addTetrahedron(r);
ans->addTetrahedron(s);
} else if (index == 3) {
NTetrahedron* r = new NTetrahedron();
NTetrahedron* s = new NTetrahedron();
r->joinTo(0, s, NPerm(0, 1, 3, 2));
r->joinTo(1, s, NPerm(2, 1, 0, 3));
r->joinTo(2, s, NPerm(0, 3, 2, 1));
r->joinTo(3, s, NPerm(1, 0, 2, 3));
ans = new NTriangulation();
ans->addTetrahedron(r);
ans->addTetrahedron(s);
} else if (index == 4) {
ans = NExampleTriangulation::figureEightKnotComplement();
ans->setPacketLabel("");
} else if (index == 129) {
ans = NExampleTriangulation::whiteheadLinkComplement();
ans->setPacketLabel("");
}
}
return ans;
}
NAbelianGroup* NSnapPeaCensusManifold::getHomologyH1() const {
return NSnapPeaCensusTri(section, index).getHomologyH1();
}
std::ostream& NSnapPeaCensusManifold::writeName(std::ostream& out) const {
// Some manifolds will get special names, and will have their usual
// SnapPea names written in writeStructure() instead.
if (section == SEC_5) {
if (index == 0)
return out << "Gieseking manifold";
if (index == 4)
return out << "Figure eight knot complement";
if (index == 129)
return out << "Whitehead link complement";
}
// No special names, just the usual SnapPea notation.
return NSnapPeaCensusTri(section, index).writeName(out);
}
std::ostream& NSnapPeaCensusManifold::writeTeXName(std::ostream& out) const {
return NSnapPeaCensusTri(section, index).writeTeXName(out);
}
std::ostream& NSnapPeaCensusManifold::writeStructure(std::ostream& out) const {
// If we didn't give the usual SnapPea name in writeName(), give it here.
if (section == SEC_5) {
if (index == 0 || index == 4 || index == 129)
return NSnapPeaCensusTri(section, index).writeName(out);
}
return out;
}
} // namespace regina
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