/* * Matrix.h * * Copyright (C) 1999 Stephen F. White *  * 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 (see the file "COPYING" for details); if  * not, write to the Free Software Foundation, Inc., 675 Mass Ave,  * Cambridge, MA 02139, USA. */#ifndef _MATRIX_H#define _MATRIX_H#include "Vec3f.h"class Matrix {public:		    Matrix();		    Matrix(float mat[4][4]);    Matrix	    operator*(const Matrix &m) const;    Vec3f	    operator*(const Vec3f &v) const;    operator	    float *() { return (float *) _mat; }    operator	    const float *() const { return (const float *) _mat; }    void	    getValue(float mat[4][4]) const;    Matrix	    invert() const;    static Matrix   identity();    void	    swapRows(int i, int j);private:    float	    _mat[4][4];};#endif // _MATRIX_H