itkDiffusionTensor3D.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDiffusionTensor3D.h,v $
  Language:  C++
  Date:      $Date: 2005/08/24 17:32:41 $
  Version:   $Revision: 1.8 $

  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 __itkDiffusionTensor3D_h
#define __itkDiffusionTensor3D_h

// Undefine an eventual DiffusionTensor3D macro
#ifdef DiffusionTensor3D
#undef DiffusionTensor3D
#endif

#include <itkSymmetricSecondRankTensor.h>


namespace itk
{

template < typename TComponent >
class DiffusionTensor3D: public SymmetricSecondRankTensor<TComponent,3>
{
public:
  typedef DiffusionTensor3D  Self;
  typedef SymmetricSecondRankTensor<TComponent, 3> Superclass;
  
  typedef typename Superclass::ValueType             ValueType;
  typedef typename Superclass::ComponentType         ComponentType;
#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && (__GNUC__ == 3 && __GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ == 3)
  typedef ComponentType ComponentArrayType[6];
#else
  typedef typename Superclass::ComponentArrayType    ComponentArrayType;
#endif
  typedef typename Superclass::AccumulateValueType   AccumulateValueType;
  typedef typename Superclass::RealValueType         RealValueType;

  typedef typename Superclass::EigenValuesArrayType    EigenValuesArrayType;
  typedef typename Superclass::EigenVectorsMatrixType  EigenVectorsMatrixType;

  DiffusionTensor3D();

  DiffusionTensor3D(const Self& r);
  DiffusionTensor3D(const Superclass& r);
  DiffusionTensor3D(const ComponentType& r);
  DiffusionTensor3D(const ComponentArrayType r);

  Self& operator= (const Self& r);
  Self& operator= (const Superclass & r);
  Self& operator= (const ComponentType& r);
  Self& operator= (const ComponentArrayType r);

  AccumulateValueType GetTrace() const;

  RealValueType GetFractionalAnisotropy() const;

  RealValueType GetRelativeAnisotropy() const;

  RealValueType GetInnerScalarProduct() const;

};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDiffusionTensor3D.txx"
#endif

#endif

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