/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library 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 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSGUTIL_REVERSEPRIMITIVEFUNCTOR
#define OSGUTIL_REVERSEPRIMITIVEFUNCTOR 1

#include <osg/PrimitiveSet>
#include <osg/Notify>

namespace osgUtil {


class ReversePrimitiveFunctor : public osg::PrimitiveIndexFunctor
{
public:

    virtual ~ReversePrimitiveFunctor() {}

    osg::PrimitiveSet * getReversedPrimitiveSet() { return _reversedPrimitiveSet.get(); }
    
    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec2* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec3* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec4* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec2d* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec3d* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void setVertexArray(unsigned int /*count*/,const osg::Vec4d* /*vertices*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void drawArrays(GLenum /*mode*/,GLint /*first*/,GLsizei /*count*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void drawElements(GLenum mode,GLsizei count,const GLubyte* indices);

    virtual void drawElements(GLenum mode,GLsizei count,const GLushort* indices);

    virtual void drawElements(GLenum mode,GLsizei count,const GLuint* indices);
 

    /// Mimics the OpenGL \c glBegin() function.
    virtual void begin(GLenum /*mode*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void vertex(unsigned int /*pos*/)
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }

    virtual void end()
    { osg::notify(osg::WARN) << "ReversePrimitiveFunctor : not implemented " << std::endl; }
    
    
    osg::ref_ptr<osg::PrimitiveSet> _reversedPrimitiveSet;
    
    
};

} // end osgUtil namespace

#endif // ** OSGUTIL_REVERSEFACEVISITOR ** //