itkFEMElement2DMembrane.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

#ifndef __itkFEMElement2DMembrane_h
#define __itkFEMElement2DMembrane_h

#include "itkFEMElementBase.h"
#include "itkFEMMaterialLinearElasticity.h"

namespace itk
{
namespace fem
{
template <typename TBaseClass = Element>
class Element2DMembrane : public TBaseClass
{
public:

  typedef Element2DMembrane        Self;
  typedef TBaseClass               Superclass;
  typedef SmartPointer<Self>       Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  itkTypeMacro(Element2DMembrane, TBaseClass);

  // Repeat the required typedefs and enums from parent class
  typedef typename Superclass::Float      Float;
  typedef typename Superclass::MatrixType MatrixType;
  typedef typename Superclass::VectorType VectorType;

  Element2DMembrane();

  // ////////////////////////////////////////////////////////////////////////
  virtual void GetStrainDisplacementMatrix(MatrixType & B, const MatrixType & shapeDgl) const;

  virtual void GetMaterialMatrix(MatrixType & D) const;

  void GetMassMatrix(MatrixType & Me) const;

  virtual unsigned int GetNumberOfDegreesOfFreedomPerNode(void) const
  {
    return 2;
  }

  virtual Material::ConstPointer GetMaterial(void) const
  {
    return m_mat;
  }

  virtual void SetMaterial(Material::ConstPointer mat_)
  {
    m_mat =
      dynamic_cast<const MaterialLinearElasticity *>( mat_.GetPointer() );
  }

protected:

  virtual void PrintSelf(std::ostream& os, Indent indent) const;

  const MaterialLinearElasticity *m_mat;

};  // class Element2DMembrane

}
}  // end namespace itk::fem

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFEMElement2DMembrane.hxx"
#endif

#endif  // #ifndef __itkFEMElement2DMembrane_h