RepulsiveSpringForceField.h

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00001 /******************************************************************************
00002 *       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
00003 *                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
00004 *                                                                             *
00005 * This library is free software; you can redistribute it and/or modify it     *
00006 * under the terms of the GNU Lesser General Public License as published by    *
00007 * the Free Software Foundation; either version 2.1 of the License, or (at     *
00008 * your option) any later version.                                             *
00009 *                                                                             *
00010 * This library is distributed in the hope that it will be useful, but WITHOUT *
00011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
00012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
00013 * for more details.                                                           *
00014 *                                                                             *
00015 * You should have received a copy of the GNU Lesser General Public License    *
00016 * along with this library; if not, write to the Free Software Foundation,     *
00017 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.          *
00018 *******************************************************************************
00019 *                               SOFA :: Modules                               *
00020 *                                                                             *
00021 * Authors: The SOFA Team and external contributors (see Authors.txt)          *
00022 *                                                                             *
00023 * Contact information: contact@sofa-framework.org                             *
00024 ******************************************************************************/
00025 #ifndef SOFA_COMPONENT_INTERACTIONFORCEFIELD_REPULSIVESPRINGFORCEFIELD_H
00026 #define SOFA_COMPONENT_INTERACTIONFORCEFIELD_REPULSIVESPRINGFORCEFIELD_H
00027 
00028 #include <sofa/component/forcefield/StiffSpringForceField.h>
00029 
00030 namespace sofa
00031 {
00032 
00033 namespace component
00034 {
00035 
00036 namespace interactionforcefield
00037 {
00038 
00039 template<class DataTypes>
00040 class RepulsiveSpringForceField : public forcefield::StiffSpringForceField<DataTypes>
00041 {
00042 public:
00043     typedef forcefield::StiffSpringForceField<DataTypes> Inherit;
00044     typedef typename DataTypes::VecCoord VecCoord;
00045     typedef typename DataTypes::VecDeriv VecDeriv;
00046     typedef typename DataTypes::Coord Coord;
00047     typedef typename DataTypes::Deriv Deriv;
00048     typedef typename Coord::value_type Real;
00049     typedef typename Inherit::Mat Mat;
00050     typedef typename Inherit::Spring Spring;
00051     enum { N = Inherit::N };
00052 public:
00053     
00054     RepulsiveSpringForceField(core::componentmodel::behavior::MechanicalState<DataTypes>* object1, core::componentmodel::behavior::MechanicalState<DataTypes>* object2)
00055     : forcefield::StiffSpringForceField<DataTypes>(object1, object2)
00056     {
00057     }
00058     
00059     RepulsiveSpringForceField()
00060     {
00061     }
00062     
00063     virtual void addForce(VecDeriv& f1, VecDeriv& f2, const VecCoord& x1, const VecCoord& x2, const VecDeriv& v1, const VecDeriv& v2);
00064         virtual double getPotentialEnergy();
00065 };
00066 
00067 } // namespace interactionforcefield
00068 
00069 } // namespace component
00070 
00071 } // namespace sofa
00072 
00073 #endif