fmatrix.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef TITANIC_FMATRIX_H
#define TITANIC_FMATRIX_H

#include "titanic/star_control/fvector.h"

namespace Titanic {

class SimpleFile;

class FMatrix {
public:
    FVector _row1;
    FVector _row2;
    FVector _row3;
public:
    FMatrix();
    FMatrix(const FVector &, const FVector &, const FVector &);

    void load(SimpleFile *file, int param);

    void save(SimpleFile *file, int indent);

    void clear();

    void identity();

    void set(const FMatrix &m);

    void set(const FVector &row1, const FVector &row2, const FVector &row3);

    void set(const FVector &v);

    void matRProd(const FMatrix &m);

    void matLProd(const FMatrix &m);

    bool operator==(const FMatrix &src) {
        return _row1 == src._row1 && _row2 == src._row2 && _row3 == src._row3;
    }

    bool operator!=(const FMatrix &src) {
        return !operator==(src);
    }

    FVector &operator[](int idx) {
        assert(idx >= 0 && idx <= 2);
        FVector *rows[3] = { &_row1, &_row2, &_row3 };
        return *rows[idx];
    }
};

void matProd(const FMatrix &a, const FMatrix &m, FMatrix &C);

} // End of namespace Titanic

#endif /* TITANIC_FMATRIX_H */