itkFEMElement3DC0LinearTetrahedron.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFEMElement3DC0LinearTetrahedron.h,v $
  Language:  C++
  Date:      $Date: 2009-01-29 20:09:12 $
  Version:   $Revision: 1.11 $

  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 __itkFEMElement3DC0LinearTetrahedron_h
#define __itkFEMElement3DC0LinearTetrahedron_h


#include "itkFEMElementStd.h"
//to make some checks in GetLocalFromGlobalCoordinates
#include <vnl/vnl_matrix.h>
#include <vnl/algo/vnl_matrix_inverse.h>

namespace itk {
namespace fem {

class Element3DC0LinearTetrahedron : public ElementStd<4,3>
{
  typedef ElementStd<4,3> TemplatedParentClass;
  FEM_ABSTRACT_CLASS( Element3DC0LinearTetrahedron, TemplatedParentClass )
public:



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

#ifdef FEM_BUILD_VISUALIZATION
  void Draw(CDC* pDC, Solution::ConstPointer sol) const;
#endif


};

}} // end namespace itk::fem

#endif  // #ifndef __itkFEMElement3DC0LinearTetrahedron_h