#ifndef OSG_CULLFACE
#define OSG_CULLFACE 1

#include <osg/GL>
#include <osg/StateAttribute>
#include <osg/StateSet>

namespace osg {

/** Class to globally enable/disable OpenGL's polygon culling mode=.
*/     
class SG_EXPORT CullFace : public StateAttribute
{
    public :
    
        CullFace();
        virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const CullFace*>(obj)!=0L; }
        virtual Object* clone() const { return new CullFace(); }
        virtual const char* className() const { return "CullFace"; }
    
        virtual const Type getType() const { return CULLFACE; }
        
        virtual void setStateSetModes(StateSet& ds,const GLModeValue value) const
        {
            ds.setMode(GL_CULL_FACE,value);
        }

        enum Mode {
            FRONT = GL_FRONT,
            BACK = GL_BACK,
            FRONT_AND_BACK = GL_FRONT_AND_BACK
        };
    
        inline void setMode(const Mode mode) { _mode = mode; }

        inline const Mode getMode() const { return _mode; }
    
        virtual void apply(State& state) const;
        
    protected:
    
        virtual ~CullFace();
        
        Mode _mode;

};

};

#endif