itkFEMElement2DC1Beam.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 __itkFEMElement2DC1Beam_h
#define __itkFEMElement2DC1Beam_h

#include "itkFEMElementStd.h"
#include "itkFEMLoadElementBase.h"
#include "itkFEMMaterialLinearElasticity.h"

namespace itk
{
namespace fem
{
class Element2DC1Beam : public ElementStd<2, 2>
{
public:

  typedef Element2DC1Beam          Self;
  typedef ElementStd<2, 2>         TemplatedParentClass;
  typedef TemplatedParentClass     Superclass;
  typedef SmartPointer<Self>       Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  itkSimpleNewMacro(Self);

  itkTypeMacro(Element2DC1Beam, TemplatedParentClass);

  virtual::itk::LightObject::Pointer CreateAnother(void) const;


  Element2DC1Beam();

  Element2DC1Beam(Node::ConstPointer n1_, Node::ConstPointer n2_, Material::ConstPointer mat_);

  // ////////////////////////////////////////////////////////////////////////
  /*
   * Methods related to the physics of the problem.
   */

  virtual void GetStiffnessMatrix(MatrixType & Ke) const;

  virtual void GetMassMatrix(MatrixType & Me) const;

  virtual void GetStrainDisplacementMatrix(MatrixType &, const MatrixType &) const
  {
  }

  virtual void GetMaterialMatrix(MatrixType &) const
  {
  }

  // ////////////////////////////////////////////////////////////////////////
  enum { DefaultIntegrationOrder = 1 };

  virtual void GetIntegrationPointAndWeight(unsigned int i, VectorType & pt, Float & w, unsigned int order = 0) const;

  virtual unsigned int GetNumberOfIntegrationPoints(unsigned int order) const;

  // ////////////////////////////////////////////////////////////////////////
  virtual VectorType ShapeFunctions(const VectorType & pt) const;

  virtual void ShapeFunctionDerivatives(const VectorType & pt, MatrixType & shapeD) const;

  virtual bool GetLocalFromGlobalCoordinates(const VectorType &, VectorType &) const
  {
    return false;
  }

  virtual Float JacobianDeterminant(const VectorType & pt, const MatrixType *pJ) const;

  virtual unsigned int GetNumberOfDegreesOfFreedomPerNode(void) const
  {
    return 3;
  }

  virtual Material::ConstPointer GetMaterial(void) const
  {
    return dynamic_cast<const Material *>(m_mat);
  }

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

  virtual void PopulateEdgeIds(void) { /* empty */ }

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

private:

  const MaterialLinearElasticity *m_mat;

};

}
}  // end namespace itk::fem

#endif // #ifndef __itkFEMElement2DC1Beam_h