itkSize.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSize.h,v $
  Language:  C++
  Date:      $Date: 2004/04/08 13:56:38 $
  Version:   $Revision: 1.18 $

  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 __itkSize_h
#define __itkSize_h

#include "itkMacro.h"

namespace itk
{

template<unsigned int VDimension=2>
class Size {
public:
  typedef Size  Self;
  
  typedef   Size<VDimension>  SizeType;
  typedef   unsigned long  SizeValueType;
  
  static unsigned int GetSizeDimension(void) { return VDimension; }

  const Self
  operator+(const Self &vec)
    {
    Self result;
    for (unsigned int i=0; i < VDimension; i++)
      { result[i] = m_Size[i] + vec.m_Size[i]; }
    return result;
    }

  const Self &
  operator+=(const Self &vec)
    {
    for (unsigned int i=0; i < VDimension; i++)
      { m_Size[i] += vec.m_Size[i]; }
    return *this;
    }

  const Self
  operator-(const Self &vec)
    {
    Self result;
    for (unsigned int i=0; i < VDimension; i++)
      { result[i] = m_Size[i] - vec.m_Size[i]; }
    return result;
    }

  const Self &
  operator-=(const Self &vec)
    {
    for (unsigned int i=0; i < VDimension; i++)
      { m_Size[i] -= vec.m_Size[i]; }
    return *this;
    }

  const Self
  operator*(const Self &vec)
    {
    Self result;
    for (unsigned int i=0; i < VDimension; i++)
      { result[i] = m_Size[i] * vec.m_Size[i]; }
    return result;
    }

  const Self &
  operator*=(const Self &vec)
    {
    for (unsigned int i=0; i < VDimension; i++)
      { m_Size[i] *= vec.m_Size[i]; }
    return *this;
    }

  bool
  operator==(const Self &vec) const
    {
    bool same=1;
    for (unsigned int i=0; i < VDimension && same; i++)
      { same = (m_Size[i] == vec.m_Size[i]); }
    return same;
    }

  bool
  operator!=(const Self &vec) const
    {
    bool same=1;
    for (unsigned int i=0; i < VDimension && same; i++)
      { same = (m_Size[i] == vec.m_Size[i]); }
    return !same;
    }

  SizeValueType & operator[](unsigned int dim)
    { return m_Size[dim]; }

  SizeValueType operator[](unsigned int dim) const
    { return m_Size[dim]; }

  const SizeValueType *GetSize() const { return m_Size; };

  void SetSize(const SizeValueType val[VDimension])
    { memcpy(m_Size, val, sizeof(SizeValueType)*VDimension); }

  void SetElement(unsigned long element, SizeValueType val )
    { m_Size[ element ] = val;  }

  SizeValueType GetElement( unsigned long element ) const
    { return m_Size[ element ]; }

  void Fill(SizeValueType value)
    { for(unsigned int i=0;i < VDimension; ++i) m_Size[i] = value; }

  SizeValueType m_Size[VDimension];

};


template<unsigned int VDimension>
std::ostream & operator<<(std::ostream &os, const Size<VDimension> &size)
{
  os << "[";
  for (unsigned int i=0; i+1 < VDimension; ++i)
    {
    os << size[i] << ", ";
    }
  if (VDimension >= 1)
    {
    os << size[VDimension-1];
    }
  os << "]";
  return os;
}
#ifdef ITK_EXPLICIT_INSTANTIATION
   extern template class Size<1>;
   extern template class Size<2>;
   extern template class Size<3>;
   extern template class Size<4>;
   extern template class Size<5>;
   extern template std::ostream & operator<<(std::ostream &os, const Size<1> &size);
   extern template std::ostream & operator<<(std::ostream &os, const Size<2> &size);
   extern template std::ostream & operator<<(std::ostream &os, const Size<3> &size);
   extern template std::ostream & operator<<(std::ostream &os, const Size<4> &size);
   extern template std::ostream & operator<<(std::ostream &os, const Size<5> &size);
#endif

} // end namespace itk

#endif 

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