//C++ header - Open Scene Graph Simulation - Copyright (C) 1998-2002 Robert Osfield
// Distributed under the terms of the GNU General Public License (GPL)
// as published by the Free Software Foundation.
//
// All software using osgSim must be GPL'd or excempted via the 
// purchase of the Open Scene Graph Professional License (OSGPL)
// for further information contact robert@openscenegraph.com.

#ifndef OSGSIM_LIGHTPOINTNODE
#define OSGSIM_LIGHTPOINTNODE 1

#include <osgSim/Export>
#include <osgSim/LightPoint>
#include <osgSim/LightPointDrawable>

#include <osg/Node>
#include <osg/NodeVisitor>
#include <osg/BoundingBox>
#include <osg/Quat>
#include <osg/Vec4>

#include <vector>
#include <set>

namespace osgSim {


class OSGSIM_EXPORT LightPointNode : public osg::Node
{
    public :

        typedef std::vector< LightPoint > LightPointList;

        LightPointNode();
        
        /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
        LightPointNode(const LightPointNode&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);

        META_Node(osgSim,LightPointNode);

        virtual void traverse(osg::NodeVisitor& nv);

        
        unsigned int addLightPoint(const LightPoint& lp);
	
	LightPoint& getLightPoint(unsigned int pos) { return _lightPointList[pos]; }

	const LightPoint& getLightPoint(unsigned int pos) const { return _lightPointList[pos]; }
        
        void removeLightPoint(unsigned int pos);
        
        void removeLightPoints(LightPointList::iterator start,LightPointList::iterator end);

        LightPointList  _lightPointList;

    protected:
    
        ~LightPointNode() {}

        // used to cache the bouding box of the lightpoints as a tighter
        // view frustum check. 
        mutable osg::BoundingBox _bbox;

        virtual bool computeBound() const;

        
        
};

}

#endif