itkFEMElement2DC0LinearQuadrilateral.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFEMElement2DC0LinearQuadrilateral.h,v $
  Language:  C++
  Date:      $Date: 2002/06/05 23:02:15 $
  Version:   $Revision: 1.21 $

  Copyright (c) 2002 Insight 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 __itkFEMElement2DC0LinearQuadrilateral_h
#define __itkFEMElement2DC0LinearQuadrilateral_h

#include "itkFEMElementStd.h"

namespace itk {
namespace fem {




class Element2DC0LinearQuadrilateral : public ElementStd<4,2>
{
typedef ElementStd<4,2> TemplatedParentClass;
FEM_ABSTRACT_CLASS( Element2DC0LinearQuadrilateral, TemplatedParentClass )
public:




  /*
   * Methods related to numeric integration
   */

  enum { DefaultIntegrationOrder = 2 };

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

  virtual unsigned int GetNumberOfIntegrationPoints(unsigned int order) const;



  /*
   * Methods related to the geometry of an element
   */

  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 __itkFEMElement2DC0LinearQuadrilateral_h

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