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itkFEMElement2DMembrane.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkFEMElement2DMembrane.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-01-28 21:57:30 $
00007   Version:   $Revision: 1.4 $
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 
00018 #ifndef __itkFEMElement2DMembrane_h
00019 #define __itkFEMElement2DMembrane_h
00020 
00021 #include "itkFEMElementBase.h"
00022 #include "itkFEMMaterialLinearElasticity.h"
00023 
00024 namespace itk {
00025 namespace fem {
00026 
00041 template<class TBaseClass=Element>
00042 class Element2DMembrane : public TBaseClass
00043 {
00044 FEM_ABSTRACT_CLASS(Element2DMembrane,TBaseClass)
00045 public:
00046 
00047   // Repeat the required typedefs and enums from parent class
00048   typedef typename Superclass::Float      Float;
00049   typedef typename Superclass::MatrixType MatrixType;
00050   typedef typename Superclass::VectorType VectorType;
00051 
00055   virtual void Read( std::istream&, void* info );
00056 
00060   virtual void Write( std::ostream& f ) const;
00061 
00065   Element2DMembrane();
00066 
00068 
00075   virtual void GetStrainDisplacementMatrix(MatrixType& B, const MatrixType& shapeDgl) const;
00076 
00080   virtual void GetMaterialMatrix(MatrixType& D) const;
00081 
00085   void GetMassMatrix(MatrixType& Me) const;
00086 
00087 
00091   virtual unsigned int GetNumberOfDegreesOfFreedomPerNode( void ) const
00092     { return 2; }
00093 
00094 public:
00095 
00099   MaterialLinearElasticity::ConstPointer m_mat;
00100   virtual Material::ConstPointer GetMaterial(void) const { return m_mat; }
00101   virtual void SetMaterial(Material::ConstPointer mat_ ) { m_mat=dynamic_cast<const MaterialLinearElasticity*>(&*mat_); }
00103 
00104 
00105 }; // class Element2DMembrane
00106 
00107 #ifdef _MSC_VER
00108 // Declare a static dummy function to prevent a MSVC 6.0 SP5 from crashing.
00109 // I have no idea why things don't work when this is not declared, but it
00110 // looks like this declaration makes compiler forget about some of the
00111 // troubles it has with templates.
00112 static void Dummy( void );
00113 #endif // #ifdef _MSC_VER
00114 
00115 }} // end namespace itk::fem
00116 
00117 #ifndef ITK_MANUAL_INSTANTIATION
00118 #include "itkFEMElement2DMembrane.txx"
00119 #endif
00120 
00121 #endif  // #ifndef __itkFEMElement2DMembrane_h
00122 

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