// -*- Mode: c++ -*-
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.

#ifndef OSG_POLYGONSTIPPLE
#define OSG_POLYGONSTIPPLE 1

#include <osg/StateAttribute>

namespace osg
{

class SG_EXPORT PolygonStipple : public StateAttribute
{
    public :

        PolygonStipple();

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

        META_StateAttribute(osg, PolygonStipple, POLYGONSTIPPLE);

        /** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
        virtual int compare(const StateAttribute& sa) const;

        virtual void getAssociatedModes(std::vector<GLMode>& modes) const 
        {
            modes.push_back(GL_POLYGON_STIPPLE);
        }

        /** set the mask up, copying 128 bytes (32x32 bitfield) from mask into the local _mask.*/
        void setMask(const GLubyte* mask);

        /** get a pointer to the mask.*/
        inline const GLubyte* getMask() const {return _mask;}


        virtual void apply(State& state) const;

    protected :

        virtual ~PolygonStipple();

        GLubyte _mask[128];

};

}

#endif