ForceField.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __FORCEFIELD_H__
#define __FORCEFIELD_H__

#include "H3DForceEffect.h" 
#include "HapticForceField.h"
#include "SFVec3f.h"

namespace H3D {
  class H3DAPI_API ForceField: public H3DForceEffect {
  public:
    ForceField( Inst< SFVec3f > _force = 0,
                Inst< SFNode  > _metadata = 0 );

#ifdef USE_HAPTICS

    virtual void ForceField::traverseSG( TraverseInfo &ti ) {
      if( ti.hapticsEnabled() ) {
        ti.addForceEffectToAll( new HapticForceField( ti.getAccForwardMatrix(),
                                                      force->getValue(),
                                                      true ) );
      }
    }
#endif

    auto_ptr< SFVec3f > force;

    static H3DNodeDatabase database;
  };
}

#endif

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