/usr/include/InsightToolkit/Numerics/FEM/itkFEMElement2DC0LinearLine.h is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
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Program: Insight Segmentation & Registration Toolkit
Module: itkFEMElement2DC0LinearLine.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 __itkFEMElement2DC0LinearLine_h
#define __itkFEMElement2DC0LinearLine_h
#include "itkFEMElementStd.h"
namespace itk {
namespace fem {
/**
* \class Element2DC0LinearLine
* \brief 2-noded, linear, C0 continuous line element in 2D space.
*/
class Element2DC0LinearLine : public ElementStd<2,2>
{
typedef ElementStd<2,2> TemplatedParentClass;
FEM_ABSTRACT_CLASS( Element2DC0LinearLine, TemplatedParentClass )
public:
//////////////////////////////////////////////////////////////////////////
/**
* Methods related to numeric integration
*/
enum { DefaultIntegrationOrder = 1 };
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& globalPt, VectorType& localPt ) const;
/**
* We need to provide our own implementation of calculating Jacobian,
* because the element lives in 2D space and has only one dimension.
* The default implementation of Jacobian in the Element base class
* is not correct since it assumes that the number of element dimensions
* is equal to the number of spatial dimensions.
*
* Jacobian is a scalar for this element.
*/
virtual void Jacobian( const VectorType& pt, MatrixType& J, const MatrixType* pshapeD = 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 __itkFEMElement2DC0LinearLine_h
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