itkVariableSizeMatrix.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVariableSizeMatrix.h,v $
  Language:  C++
  Date:      $Date: 2005/10/24 19:48:52 $
  Version:   $Revision: 1.6 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkVariableSizeMatrix_h
#define __itkVariableSizeMatrix_h


#include "itkPoint.h"
#include "itkVector.h"
#include "itkCovariantVector.h"
#include "vnl/vnl_matrix_fixed.h"
#include "itkArray.h"


namespace itk
{

template<class T >
class VariableSizeMatrix {
public:
  typedef VariableSizeMatrix  Self;

  typedef T ValueType;
  typedef T ComponentType;

  typedef vnl_matrix<T>  InternalMatrixType;

  Array<T> operator*(const Array<T> & vector) const;
 
  Self operator*(const Self & matrix) const;
 
  Self operator+(const Self & matrix) const;
  const Self & operator+=(const Self & matrix );
 
  Self operator-(const Self & matrix) const;
  const Self & operator-=(const Self & matrix );
 
  vnl_matrix<T> operator*(const vnl_matrix<T> & matrix) const;

  void operator*=(const Self & matrix);
 
  void operator*=(const vnl_matrix<T> & matrix);

  vnl_vector<T> operator*(const vnl_vector<T> & matrix) const;

  void operator*=(const T & value)
    { m_Matrix *= value; }

  Self operator*(const T & value)
    { Self result( *this );
      result *= value;
      return result; }

  void operator/=(const T & value)
    { m_Matrix /= value; }
  
  Self operator/(const T & value)
    { Self result( *this );
      result /= value;
      return result; }

  inline T & operator()( unsigned int row, unsigned int col )
    { return m_Matrix(row,col); }

  inline const T & operator()( unsigned int row, unsigned int col ) const
    { return m_Matrix(row,col); }

  inline T * operator[]( unsigned int i )
    { return m_Matrix[i]; }

  inline const T * operator[]( unsigned int i ) const
    { return m_Matrix[i]; }

  inline InternalMatrixType & GetVnlMatrix( void )
    { return m_Matrix; }

  inline const InternalMatrixType & GetVnlMatrix( void ) const
    { return m_Matrix; }

  inline void SetIdentity( void ) 
    { m_Matrix.set_identity(); }

  inline void Fill( const T & value ) 
    { m_Matrix.fill( value ); }

  inline const Self & operator=( const vnl_matrix<T> & matrix);

  inline bool operator==( const Self & matrix) const;
  inline bool operator!=( const Self & matrix) const;

  inline const Self & operator=( const Self & matrix);

  inline vnl_matrix<T> GetInverse( void ) const;
 
  inline vnl_matrix<T> GetTranspose( void ) const;

  VariableSizeMatrix() : m_Matrix() {};
  
  VariableSizeMatrix(unsigned int rows, unsigned int cols);

  VariableSizeMatrix(const Self & matrix) : m_Matrix( matrix.m_Matrix ) {};

  inline unsigned int Rows() const { return m_Matrix.rows(); } 
  
  inline unsigned int Cols() const { return m_Matrix.cols(); } 

  inline bool SetSize( unsigned int r, unsigned int c)
    {  return m_Matrix.set_size( r, c );  }
    
 
 
private:
  InternalMatrixType     m_Matrix;
};

template< class T >  
ITK_EXPORT std::ostream& operator<<(std::ostream& os, 
                                    const VariableSizeMatrix<T> & v) 
                            { os << v.GetVnlMatrix(); return os; }


  
} // end namespace itk
  

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVariableSizeMatrix.txx"
#endif


#endif 

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