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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 itkFEMLoadBase_h
#define itkFEMLoadBase_h
#include "itkFEMElementBase.h"
#include "itkFEMSolution.h"
#include "itkFEMPArray.h"
#include "ITKFEMExport.h"
namespace itk
{
namespace fem
{
/**
* \class Load
* \brief General abstract load base class.
*
* All other load classes that can be used in a FEM system are defined by deriving this one.
* The load class defines an external load that acts on the system. For each specific subtype
* of load, a separate load abstract class should be derived. For example we have LoadElement,
* which defines the base for all loads that act on a specific element in a system.
* \ingroup ITKFEM
*/
class ITKFEM_EXPORT Load : public FEMLightObject
{
public:
/** Standard class typedefs. */
typedef Load Self;
typedef FEMLightObject Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(Load, FEMLightObject);
/** Array class that holds special pointers to the load objects */
typedef FEMPArray<Self> ArrayType;
/**
* Sets the pointer to solution vector. This function is automatically
* called by the Solver class on every load object.
*
* Some types of external Loads may need access to previous values of
* solution vector. If a derived class needs that, it should implement
* this function, and store the passed pointer accordingly. If the result
* vector is not required, the functionn should be left unimplemented,
* so that only the dummy implementation in base class is called.
*
* param ptr Pointer to the object of Solution class.
*/
virtual void SetSolution(Solution::ConstPointer itkNotUsed(ptr)) { }
virtual Solution::ConstPointer GetSolution()
{
return ITK_NULLPTR;
}
/**
* Get the element containing the degree of freedom
* on which the force is being applied.
*/
const Element * GetElement() const
{
return m_Element;
}
/**
* Get the element containing the degree of freedom
* on which the force is being applied.
*/
void SetElement( const Element * el)
{
this->m_Element = el;
}
protected:
virtual void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE;
/**
* Pointer to an element in a system that contains the DOF
* on which the external force is applied.
*/
Element::ConstPointer m_Element;
};
}
} // end namespace itk::fem
#endif // #ifndef itkFEMLoadBase_h
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