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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: Tetrahedron.cpp,v 1.6 2005/04/20 22:09:41 delpinux Exp $
#include <Tetrahedron.hpp>
Tetrahedron::Tetrahedron(Vertex& x0,
Vertex& x1,
Vertex& x2,
Vertex& x3,
const size_t& ref)
: Cell(Tetrahedron::NumberOfVertices, ref)
{
__vertices[0] = &x0;
__vertices[1] = &x1;
__vertices[2] = &x2;
__vertices[3] = &x3;
TinyVector<3> A = x1 - x0;
TinyVector<3> B = x2 - x0;
TinyVector<3> C = x3 - x0;
__volume = 1./6.*((A^B)*C);
if (__volume < 0) {
throw ErrorHandler(__FILE__,__LINE__,
"negative tetrahedron volume",
ErrorHandler::normal);
}
}
const size_t
Tetrahedron::
faces[Tetrahedron::NumberOfFaces][Tetrahedron::FaceType::NumberOfVertices]
={{1,2,3},{3,2,0},{0,1,3},{2,1,0}};
const size_t
Tetrahedron::
edges[Tetrahedron::NumberOfEdges][Edge::NumberOfVertices]
= {{0,1},{0,2},{0,3},{1,2},{3,1},{2,3}};
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