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itkSymmetricEigenSystem.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSymmetricEigenSystem.h,v $
00005   Language:  C++
00006   Date:      $Date: 2003/09/10 14:29:39 $
00007   Version:   $Revision: 1.6 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkSymmetricEigenSystem_h
00018 #define __itkSymmetricEigenSystem_h
00019 
00020 #include "itkObject.h"
00021 #include "vnl/algo/vnl_symmetric_eigensystem.h"
00022 #include "itkObjectFactory.h"
00023 #include "itkObject.h"
00024 #include "itkFixedArray.h"
00025 #include "itkMatrix.h"
00026 #include "itkObjectFactory.h"
00027 
00028 namespace itk
00029 {
00030   
00037 template< class TMatrixElement, int VNumberOfRows >
00038 class ITK_EXPORT SymmetricEigenSystem : public Object
00039 {
00040 public:
00042   typedef SymmetricEigenSystem Self;
00043   typedef Object Superclass;
00044   typedef SmartPointer<Self> Pointer;
00045   typedef SmartPointer<const Self> ConstPointer;
00046   
00048   itkTypeMacro( SymmetricEigenSystem, Object );
00049 
00051   itkNewMacro(Self);
00052 
00054   typedef FixedArray< TMatrixElement, VNumberOfRows > ArrayType;
00055 
00057   typedef FixedArray< ArrayType, VNumberOfRows > Array2DType ;
00058 
00060   typedef Array2DType EigenVectorArrayType ;
00061 
00063   typedef ArrayType EigenValueArrayType ;
00064 
00066   typedef Matrix< TMatrixElement, VNumberOfRows, VNumberOfRows > MatrixType ;
00067 
00069   typedef vnl_symmetric_eigensystem< TMatrixElement > InternalEigenSystemType;
00070 
00072   itkSetObjectMacro(Matrix, MatrixType) ;
00073   MatrixType* GetMatrix()
00074   { return m_Matrix ; }
00075 
00082   itkSetMacro(UseAbsoluteOrder, bool) ;
00083   itkGetMacro(UseAbsoluteOrder, bool) ;
00084 
00086   EigenVectorArrayType* GetEigenVectors()
00087   { return &m_EigenVectors ; } 
00088 
00090   EigenValueArrayType* GetEigenValues()
00091   { return &m_EigenValues ; }
00092 
00095   void Update()
00096   { this->GenerateData() ; }
00097 
00098 protected:
00099   SymmetricEigenSystem();
00100   virtual ~SymmetricEigenSystem();
00101   void PrintSelf(std::ostream& os, Indent indent) const;
00102 
00104   void GenerateData() ;
00105 
00106 private:
00107   SymmetricEigenSystem(const Self&); //purposely not implemented
00108   void operator=(const Self&); //purposely not implemented
00109 
00111   MatrixType* m_Matrix ;
00112 
00114   EigenVectorArrayType m_EigenVectors ;
00115   
00117   EigenValueArrayType m_EigenValues ;
00118 
00121   bool m_UseAbsoluteOrder ;
00122 };
00123 
00124 } // end namespace itk
00125 
00126 #ifndef ITK_MANUAL_INSTANTIATION
00127 #include "itkSymmetricEigenSystem.txx"
00128 #endif
00129 
00130 #endif
00131 
00132 
00133 

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