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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkFEMLoadNode.h,v $
Language: C++
Date: $Date: 2009-01-30 21:10:18 $
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 __itkFEMLoadNode_h
#define __itkFEMLoadNode_h
#include "itkFEMLoadBase.h"
#include "vnl/vnl_vector.h"
namespace itk {
namespace fem {
/**
* \class LoadNode
* \brief This load is applied on a specific point within the system.
*
* The point is defined as a point within an element object.
*
* You must provide a pointer to an element object and a number
* of point on which on which the load acts. Force vector F should have
* element->GetNumberOfDegreesOfFreedomPerNode() dimensions.
*/
class LoadNode : public Load {
FEM_CLASS(LoadNode,Load)
public:
typedef Node::Float Float;
/**
* Read a LoadNode object from input stream.
*/
virtual void Read( std::istream& f, void* info );
/**
* Write a Load object to the output stream
*/
virtual void Write( std::ostream& f ) const;
/**
* Pointer to an element in a system that contains the DOF
* on which the external force is applied.
*/
Element::ConstPointer m_element;
/**
* Point within the element on which the force acts.
*/
unsigned int m_pt;
/**
* Force applied on the node. Dimension of F should equal
* element->GetNumberOfDegreesOfFreedomPerNode().
*/
vnl_vector<Float> F;
LoadNode() : m_element(0) {} // default constructor
LoadNode( Element::ConstPointer element_, unsigned int pt_, vnl_vector<Float> F_ ) :
m_element(element_), m_pt(pt_), F(F_) {}
};
FEM_CLASS_INIT(LoadNode)
}} // end namespace itk::fem
#endif // #ifndef __itkFEMLoadDOF_h
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