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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2009, 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 "triangulation/ntetrahedron.h"
#include "subcomplex/nsnappedtwosphere.h"
#include "subcomplex/nsnappedball.h"
namespace regina {
NSnappedTwoSphere* NSnappedTwoSphere::clone() const {
NSnappedTwoSphere* ans = new NSnappedTwoSphere();
ans->ball[0] = ball[0]->clone();
ans->ball[1] = ball[1]->clone();
return ans;
}
NSnappedTwoSphere* NSnappedTwoSphere::formsSnappedTwoSphere(
NTetrahedron* tet1, NTetrahedron* tet2) {
NSnappedBall* ball[2];
if (! (ball[0] = NSnappedBall::formsSnappedBall(tet1)))
return 0;
if (! (ball[1] = NSnappedBall::formsSnappedBall(tet2))) {
delete ball[0];
return 0;
}
if (tet1->getEdge(ball[0]->getEquatorEdge()) !=
tet2->getEdge(ball[1]->getEquatorEdge())) {
delete ball[0];
delete ball[1];
return 0;
}
// This is it.
NSnappedTwoSphere* ans = new NSnappedTwoSphere();
ans->ball[0] = ball[0];
ans->ball[1] = ball[1];
return ans;
}
NSnappedTwoSphere* NSnappedTwoSphere::formsSnappedTwoSphere(
NSnappedBall* ball1, NSnappedBall* ball2) {
if (ball1->getTetrahedron()->getEdge(ball1->getEquatorEdge()) !=
ball2->getTetrahedron()->getEdge(ball2->getEquatorEdge()))
return 0;
// This is it.
NSnappedTwoSphere* ans = new NSnappedTwoSphere();
ans->ball[0] = ball1->clone();
ans->ball[1] = ball2->clone();
return ans;
}
} // namespace regina
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