/usr/include/InsightToolkit/Numerics/FEM/itkFEMElement2DC0QuadraticTriangular.h is in libinsighttoolkit3-dev 3.20.1-1.
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Program: Insight Segmentation & Registration Toolkit
Module: itkFEMElement2DC0QuadraticTriangular.h
Language: C++
Date: $Date$
Version: $Revision$
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 __itkFEMElement2DC0QuadraticTriangular_h
#define __itkFEMElement2DC0QuadraticTriangular_h
#include "itkFEMElementStd.h"
namespace itk {
namespace fem {
/**
* \class Element2DC0QuadraticTriangular
* \brief 3-noded, quadratic, C0 continuous finite element in 2D space.
*/
class Element2DC0QuadraticTriangular : public ElementStd<6,2>
{
typedef ElementStd<3,2> TemplatedParentClass;
FEM_ABSTRACT_CLASS( Element2DC0QuadraticTriangular, 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;
// FIXME: Write a proper implementation
virtual bool GetLocalFromGlobalCoordinates( const VectorType&, VectorType& ) const
{
throw;
return false;
}
// Since the Jacobian is not quadratic, we need to provide our
// own implementation of calculating the determinant and inverse.
virtual Float JacobianDeterminant( const VectorType& pt, const MatrixType* pJ = 0 ) const;
virtual void JacobianInverse( const VectorType& pt, MatrixType& invJ, const MatrixType* pJ = 0 ) const;
/**
* Draw the element on the specified device context
*/
#ifdef FEM_BUILD_VISUALIZATION
void Draw(CDC* pDC, Solution::ConstPointer sol) const;
#endif
};
}} // end namespace itk::fem
#endif // #ifndef __itkFEMElement2DC0QuadraticTriangular_h
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