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/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2010 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 OSGEARTHFEATURES_CROP_FILTER_H
#define OSGEARTHFEATURES_CROP_FILTER_H 1

#include <osgEarthFeatures/Common>
#include <osgEarthFeatures/Feature>
#include <osgEarthFeatures/Filter>
#include <osgEarthSymbology/Style>
#include <osg/Geode>

namespace osgEarth { namespace Features
{
    using namespace osgEarth;
    using namespace osgEarth::Symbology;

    class OSGEARTHFEATURES_EXPORT CropFilter : public FeatureFilter
    {
    public:
        enum Method 
        {
            METHOD_CENTROID,    // include a feature if its centroid is included
            METHOD_CROPPING     // crop a feature's geometry to the target extent
        };

    public:
        CropFilter( Method method =METHOD_CENTROID );

        optional<Method>& method() { return _method; }
        const optional<Method>& method() const { return _method; }

    public:
        virtual FilterContext push( FeatureList& input, FilterContext& context );

    protected:
        optional<Method> _method;
    };

} } // namespace osgEarth::Features

#endif // OSGEARTHFEATURES_BUFFER_FILTER_H