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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_BUILD_GEOMETRY_FILTER_H
#define OSGEARTHFEATURES_BUILD_GEOMETRY_FILTER_H 1

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

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

    class OSGEARTHFEATURES_EXPORT BuildGeometryFilter : public FeaturesToNodeFilter
    {
    public:
        BuildGeometryFilter( const Style& style =Style() );

        osg::Node* push( FeatureList& input, FilterContext& context );

        const Style& getStyle() { return _style; }
        void setStyle(const Style& s) { _style = s; }

        optional<double>& maxGranularity() { return _maxAngle_deg; }
        const optional<double>& maxGranularity() const { return _maxAngle_deg; }

        optional<GeoInterpolation>& geoInterp() { return _geoInterp; }
        const optional<GeoInterpolation>& geoInterp() const { return _geoInterp; }

        optional<bool>& mergeGeometry() { return _mergeGeometry; }
        const optional<bool>& mergeGeometry() const { return _mergeGeometry; }

        optional<StringExpression>& featureName() { return _featureNameExpr; }
        const optional<StringExpression>& featureName() const { return _featureNameExpr; }

    protected:
        osg::ref_ptr<osg::Node> _result;
        osg::ref_ptr<osg::Geode> _geode;
        Style _style;
        optional<double> _maxAngle_deg;
        optional<GeoInterpolation> _geoInterp;
        optional<bool> _mergeGeometry;
        optional<StringExpression> _featureNameExpr;
        bool _hasPoints;
        bool _hasLines;
        bool _hasPolygons;

        void reset();
        
        bool process( FeatureList& input, const FilterContext& context );
    };

} } // namespace osgEarth::Features

#endif // OSGEARTHFEATURES_BUILD_GEOMETRY_FILTER_H