//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.

#ifndef OSGUTIL_SMOOTHINGVISITOR
#define OSGUTIL_SMOOTHINGVISITOR 1

#include <osg/NodeVisitor>
#include <osg/Geode>
#include <osg/GeoSet>

#include <osgUtil/Export>

namespace osgUtil {

/** A smoothing visitor for calculating smoothed normals for
  * osg::GeoSet's which contains surface primitives.
  */
class OSGUTIL_EXPORT SmoothingVisitor : public osg::NodeVisitor
{
    public:

        /// default to traversing all children.
        SmoothingVisitor()
        {
            setTraversalMode(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN);
        }

        /// smooth geoset by creating per vertex normals.
        static void smooth(osg::GeoSet& geoset);

        /// apply smoothing method to all geode geosets.
        virtual void apply(osg::Geode& geode);

};

}

#endif