E:/dev/eLynx/include/elx/math/SubMatrix.h

//============================================================================
//  SubMatrix.h                                         Math.Component package
//============================================================================
//  Usage : linear algebra - submatrix of the matrix adapter
//----------------------------------------------------------------------------
//  Copyright (C) 2006 by eLynx project
//
//  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.
//----------------------------------------------------------------------------
#ifndef __SubMatrix_h__
#define __SubMatrix_h__

#include "IMatrix.h"

namespace eLynx {
namespace Math {
        
class ExportedByMath SubMatrix : public IMatrix {
        
public:

        SubMatrix(IMatrix &iMatrix, 
                uint32 iRow1, uint32 iNRows, uint32 iCol1, uint32 iNCols);
        
        SubMatrix(const SubMatrix &iOther);
        
        SubMatrix& operator = (const SubMatrix &iOther);
        
        virtual uint32 GetWidth() const { return _NCols; }
        
        virtual uint32 GetHeight() const { return _NRows; }
        
        virtual const double& operator () (uint32 iRow, uint32 iCol) const;
        
        virtual double& operator () (uint32 iRow, uint32 iCol);
        
        virtual void SwapRows(uint32 iRow1, uint32 iRow2);
        
        virtual void SwapCols(uint32 iCol1, uint32 iCol2);
        
private:

        void CopyData(const SubMatrix &iC);

        IMatrix &_prMatrix;
        
        uint32 _Row1;
        
        uint32 _NRows;
        
        uint32 _Col1; 
        
        uint32 _NCols;
        
};

} // namespace Math
} // namespace eLynx


#endif // __SubMatrix_h__