/* 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 MATH_SQUAREMATRIX_H

#define MATH_SQUAREMATRIX_H

#include "math/matrix.h"

#include "math/vector.h"

namespace Math {

/**

* \class MatrixType<dim, dim>

* This specialization of MatrixType defines some new methods for square

* matrices.

*/

template<int dim>

class MatrixType<dim, dim> : public MatrixBase<dim, dim> {

public:

inline void setToIdentity() { *this = 1.f; }

inline void transformVector(Vector(dim) *vec) const {

*vec = this->getThis() * *vec;

}

Matrix<dim, dim> &operator=(float i);

protected:

MatrixType() : MatrixBase<dim, dim>() { setToIdentity(); }

MatrixType(float *data) : MatrixBase<dim, dim>(data) { }

MatrixType(const MatrixBase<dim, dim> &m) : MatrixBase<dim, dim>(m) { }

};

template<int dim>

Matrix<dim, dim> &MatrixType<dim, dim>::operator=(float i) {

for (int row = 0; row < dim; ++row) {

for (int col = 0; col < dim; ++col) {

this->setValue(row, col, (row == col ? i : 0.f));

}

}

return this->getThis();

}

}

#endif