/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2014 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_TERRAIN_ENGINE_REQUIREMENTS_H
#define OSGEARTH_TERRAIN_ENGINE_REQUIREMENTS_H 1

namespace osgEarth
{
    /**
     * Interface for querying terrain engine feature requirements.
     */
    class TerrainEngineRequirements
    {
    public:
        virtual bool elevationTexturesRequired() const =0;
        virtual bool normalTexturesRequired() const =0;
        virtual bool parentTexturesRequired() const =0;
        virtual bool elevationBorderRequired() const =0;
        virtual bool fullDataAtFirstLodRequired() const =0;

    public:
        virtual ~TerrainEngineRequirements() { }
    };
}

#endif // OSGEARTH_TERRAIN_ENGINE_REQUIREMENTS_H
