/usr/include/ITK-4.5/itkFEMElementStd.h is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
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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 __itkFEMElementStd_h
#define __itkFEMElementStd_h
#include "itkFEMElementBase.h"
namespace itk
{
namespace fem
{
/**
* \class ElementStd
* \brief Implements standard node management in the element classes.
*
* This is a templated helper class that automatically defines some of
* the virtual functions in elements. It is used to avoid code duplication.
*
* If a derived element class has DOFs associated only with points
* that define the geometry of the element, you can derive from this
* class to automatically create all the functions required for proper
* node management.
*
* You must specify two or three template parameters:
*
* VNumberOfNodes - Number of nodes that define the element
* (e.g. four for quadrilateral)
*
* VNumberOfSpatialDimensions - Number of dimensions of space in which the
* element is defined. This is also the size of a vector
* returned by GetNodeCoordinates() member function.
*
* TBaseClass - Class from which ElementStd is derived. TBaseClass must
* be derived from the Element base class. This enables you
* to use this class at any level of element definition.
* If not specified, it defaults to the Element class.
* \ingroup ITKFEM
*/
template <unsigned int VNumberOfNodes, unsigned int VNumberOfSpatialDimensions, typename TBaseClass = Element>
class ElementStd : public TBaseClass
{
public:
/** Standard class typedefs. */
typedef ElementStd Self;
typedef TBaseClass Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(ElementStd, TBaseClass);
// FIXME: Add concept cheking for TBaseClass, and TPointClass
// Repeat typedefs and enums from parent class
typedef typename Superclass::Float Float;
typedef typename Superclass::MatrixType MatrixType;
typedef typename Superclass::VectorType VectorType;
typedef typename Superclass::LoadType LoadType;
typedef typename Superclass::LoadPointer LoadPointer;
typedef typename Superclass::NodeIDType NodeIDType;
typedef typename Superclass::DegreeOfFreedomIDType DegreeOfFreedomIDType;
typedef typename Superclass::Node Node;
enum { InvalidDegreeOfFreedomID = Superclass::InvalidDegreeOfFreedomID };
/**
* Number of nodes that define the element.
*/
enum { NumberOfNodes = VNumberOfNodes };
/**
* Number of dimensions of space in which element can exist.
*/
enum { NumberOfSpatialDimensions = VNumberOfSpatialDimensions };
/**
* Default constructor just clears the ivars
*/
ElementStd();
// ////////////////////////////////////////////////////////////////////////
/**
* Methods that define the geometry of an element
*/
virtual unsigned int GetNumberOfNodes(void) const
{
return NumberOfNodes;
}
/**
* Get/Set the Nodes that define the element
*/
virtual NodeIDType GetNode(unsigned int n) const
{
if( n >= NumberOfNodes )
{
return 0;
}
return this->m_node[n];
}
virtual void SetNode(unsigned int n, NodeIDType node)
{
this->SetNodeInternal(n,node);
}
virtual void SetNode(unsigned int n, typename Superclass::Node::Pointer node)
{
this->SetNodeInternal(n,node);
}
/** Get the nodal coordinates */
virtual const VectorType & GetNodeCoordinates(unsigned int n) const
{
return m_node[n]->GetCoordinates();
}
/** Get the number of spatial dimensions */
virtual unsigned int GetNumberOfSpatialDimensions() const
{
return NumberOfSpatialDimensions;
}
// ////////////////////////////////////////////////////////////////////////
protected:
virtual void PrintSelf(std::ostream& os, Indent indent) const;
virtual void SetNodeInternal(unsigned int n, const Node *node)
{
if( n >= NumberOfNodes )
{
return;
}
this->m_node[n] = node;
}
/**
* Array of pointers to point objects that define the element
*/
const Node *m_node[NumberOfNodes];
};
}
} // end namespace itk::fem
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFEMElementStd.hxx"
#endif
#endif // #ifndef __itkFEMElementStd_h
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