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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 OSGEARTH_FEATURES_GEOMETRY_COMPILER_H
#define OSGEARTH_FEATURES_GEOMETRY_COMPILER_H 1

#include <osgEarthFeatures/Common>
#include <osgEarthFeatures/Feature>
#include <osgEarthFeatures/FeatureCursor>
#include <osgEarthFeatures/ResampleFilter>
#include <osgEarthSymbology/Style>
#include <osgEarth/GeoMath>

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

    class OSGEARTHFEATURES_EXPORT GeometryCompilerOptions : public ConfigOptions
    {
    public:
        GeometryCompilerOptions( const ConfigOptions& conf =ConfigOptions() );

    public:
        optional<double>& maxGranularity() { return _maxGranularity_deg; }
        const optional<double>& maxGranularity() const { return _maxGranularity_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; }

        optional<bool>& clustering() { return _clustering; }
        const optional<bool>& clustering() const { return _clustering; }

        //todo: merge this with geoInterp()
        optional<osgEarth::Features::ResampleFilter::ResampleMode>& resampleMode() { return _resampleMode;}
        const optional<osgEarth::Features::ResampleFilter::ResampleMode>& resampleMode() const { return _resampleMode;}

        optional<double>& resampleMaxLength() { return _resampleMaxLength; }
        const optional<double>& resampleMaxLength() const { return _resampleMaxLength;}



    public:
        Config getConfig() const;
        void mergeConfig( const Config& conf );

    private:
        optional<double>               _maxGranularity_deg;
        optional<GeoInterpolation>     _geoInterp;
        optional<bool>                 _mergeGeometry;
        optional<StringExpression>     _featureNameExpr;
        optional<bool>                 _clustering;
        optional<osgEarth::Features::ResampleFilter::ResampleMode> _resampleMode;
        optional<double>               _resampleMaxLength;

        void fromConfig( const Config& conf );
    };

    class OSGEARTHFEATURES_EXPORT GeometryCompiler
    {
    public:

        GeometryCompiler();

        GeometryCompiler( const GeometryCompilerOptions& options );
        
        const GeometryCompilerOptions& options() const { return _options; }

        GeometryCompilerOptions& options() { return _options; }

    public:

        osg::Node* compile(
            FeatureCursor*        input,
            const Style&          style,
            const FilterContext&  context);

        osg::Node* compile(
            Feature*              input,
            const Style&          style,
            const FilterContext&  context);

        osg::Node* compile(
            FeatureList&          mungeableInput,
            const Style&          style,
            const FilterContext&  context);

    protected:
        GeometryCompilerOptions _options;
    };

} } // namespace osgEarth::Features

#endif // OSGEARTH_FEATURES_GEOMETRY_COMPILER_H