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// MixKit -- Code library for multiresolution surface modeling
// Copyright (c) 1998, Michael Garland
//
// Contact: http://graphics.cs.uiuc.edu/~garland/software/qslim.html
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Vectors and Matrices
\author Adapted for K-3D: Romain Behar (romainbehar@yahoo.com)
*/
#include "MxMath.h"
double Mat3::det()
{
return row[0] * (row[1] ^ row[2]);
}
Mat3 Mat3::transpose()
{
return Mat3(col(0), col(1), col(2));
}
Mat3 Mat3::adjoint()
{
return Mat3(row[1]^row[2],
row[2]^row[0],
row[0]^row[1]);
}
double Mat3::invert(Mat3& inv)
{
Mat3 A = adjoint();
double d = A.row[0] * row[0];
if(d == 0)
return 0;
inv = A.transpose() / d;
return d;
}
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