ConstantForceField.h

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
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* This library is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
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* for more details.                                                           *
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*******************************************************************************
*                               SOFA :: Modules                               *
*                                                                             *
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
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* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_COMPONENT_CONSTANTFORCEFIELD_H
#define SOFA_COMPONENT_CONSTANTFORCEFIELD_H

#include <sofa/core/componentmodel/behavior/ForceField.h>
#include <sofa/core/componentmodel/behavior/MechanicalState.h>
#include <sofa/core/objectmodel/Data.h>
#include <sofa/helper/vector.h>

namespace sofa
{

namespace component
{

namespace forcefield
{

template<class DataTypes>
class ConstantForceField : public core::componentmodel::behavior::ForceField<DataTypes>, public virtual core::objectmodel::BaseObject
{
public:
    typedef core::componentmodel::behavior::ForceField<DataTypes> Inherit;
    typedef typename DataTypes::VecCoord VecCoord;
    typedef typename DataTypes::VecDeriv VecDeriv;
    typedef typename DataTypes::Coord Coord;
    typedef typename DataTypes::Deriv Deriv;
    typedef typename Coord::value_type Real;
    typedef helper::vector<unsigned> VecIndex;
public:
    
    Data< VecIndex > points;
        Data< VecDeriv > forces;
    
        ConstantForceField();
    
        virtual void addForce (VecDeriv& f, const VecCoord& x, const VecDeriv& v);
    
        virtual void addDForce (VecDeriv& , const VecDeriv& ){}
    
        
    virtual double getPotentialEnergy(const VecCoord& x);
    
    
    void draw();
    bool addBBox(double* minBBox, double* maxBBox);

};

} // namespace forcefield

} // namespace component

} // namespace sofa

#endif