/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2013 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

#ifndef OSGEARTHSYMBOLOGY_RENDER_SYMBOL_H
#define OSGEARTHSYMBOLOGY_RENDER_SYMBOL_H 1

#include <osgEarth/Common>
#include <osgEarth/DepthOffset>
#include <osgEarth/GeoMath>
#include <osgEarthSymbology/Common>
#include <osgEarthSymbology/Symbol>
#include <osg/Referenced>
#include <vector>

namespace osgEarth { namespace Symbology
{
    /** 
     * Symbol that contains general rendering settings.
     */
    class OSGEARTHSYMBOLOGY_EXPORT RenderSymbol : public Symbol
    {
    public:
        META_Symbol(RenderSymbol);

        /** construct a render symbol */
        RenderSymbol(const Config& conf =Config());

        /** whether to perform depth buffer testing */
        optional<bool>& depthTest() { return _depthTest; }
        const optional<bool>& depthTest() const { return _depthTest; }

        /** whether to force lighting on/off */
        optional<bool>& lighting() { return _lighting; }
        const optional<bool>& lighting() const { return _lighting; }

        /** depth offset properties */
        optional<DepthOffsetOptions>& depthOffset() { return _depthOffset; }
        const optional<DepthOffsetOptions>& depthOffset() const { return _depthOffset; }

    public:
        virtual Config getConfig() const;
        virtual void mergeConfig( const Config& conf );
        static void parseSLD(const Config& c, class Style& style);

    protected:
        optional<bool>               _depthTest;
        optional<bool>               _lighting;
        optional<DepthOffsetOptions> _depthOffset;
        
        /** dtor */
        virtual ~RenderSymbol() { }
    };

} } // namespace osgEarth::Symbology

#endif // OSGEARTHSYMBOLOGY_RENDER_SYMBOL_H
