/* -*-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 OSGEARTH_ENGINE_KEY_NODE_FACTORY
#define OSGEARTH_ENGINE_KEY_NODE_FACTORY 1

#include "Common"
#include <osgEarth/TileKey>
#include <osg/Node>

using namespace osgEarth;

namespace osgEarth_engine_mp
{
    /**
    * Factory object that can create a scene graph given a TileKey.
    */
    class KeyNodeFactory : public osg::Referenced
    {
    public:
        /**
        * Creates a node for a tile key at the root level.
        */
        virtual osg::Node* createRootNode( const TileKey& key ) =0;

        /**
        * Creates a node for a tile key.
        */
        virtual osg::Node* createNode( const TileKey& key ) =0;

        virtual class TileModelCompiler* getCompiler() const =0;

    protected:
        KeyNodeFactory();

        /** dtor */
        virtual ~KeyNodeFactory() { }
    };

} // namespace osgEarth_engine_mp

#endif // OSGEARTH_ENGINE_KEY_NODE_FACTORY
