Matrix.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

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 version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef GINGAMATRIX_H_
#define GINGAMATRIX_H_

#include "ISurface.h"

#include "system/compat/SystemCompat.h"
using namespace ::br::pucrio::telemidia::ginga::core::system::compat;

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace mb {
    typedef struct matrix {
        double xx; double yx;
        double xy; double yy;
        double x0; double y0;
    } matrix_t;

    class Matrix {
        public:         
            static void multiply(
                    matrix_t* result, const matrix_t* a, const matrix_t* b);

            static void init(
                    matrix_t* matrix,
                    double xx, double yx,
                    double xy, double yy,
                    double x0, double y0);

            static void initIdentity(matrix_t* matrix);
            static void initTranslate(matrix_t* matrix, double tx, double ty);
            static void translate(matrix_t* matrix, double tx, double ty);
            static void initScale(matrix_t* matrix, double sx, double sy);
            static void scale(matrix_t* matrix, double sx, double sy);
            static void initRotate(matrix_t* matrix, double radians);
            static void rotate(matrix_t* matrix, double radians);
            static void setMatrix(const matrix_t* cairo,  ISurface* primary);
    };
}
}
}
}
}
}

#endif //GINGAMATRIX_H_