/home/cube/sources/osgearth/src/osgEarthFeatures/FeatureDisplayLayout

Go to the documentation of this file.

/* -*-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_FEATURE_DISPLAY_LAYOUT_H
#define OSGEARTHFEATURES_FEATURE_DISPLAY_LAYOUT_H 1

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

namespace osgEarth { namespace Features
{
    using namespace osgEarth;

    class OSGEARTHFEATURES_EXPORT FeatureLevel
    {
    public:
        FeatureLevel( const Config& config );
        FeatureLevel( float minRange, float maxRange );
        FeatureLevel( float minRange, float maxRange, const StyleSelector& oneSelector );

        float minRange() const { return _minRange; }
        float maxRange() const { return _maxRange; }

        //optional<unsigned>& lod() { return _lod; }
        //const optional<unsigned>& lod() const { return _lod; }

        const StyleSelectorVector& selectors() const { return _selectors; }

    public:
        Config getConfig() const;

    protected:
        void fromConfig( const Config& conf );

        float               _minRange, _maxRange;
        StyleSelectorVector _selectors;
        optional<unsigned>  _lod;
    };

    class OSGEARTHFEATURES_EXPORT FeatureDisplayLayout : public osg::Referenced
    {
    public:
        FeatureDisplayLayout( const Config& conf =Config() );

        optional<float>& tileSizeFactor() { return _tileSizeFactor; }
        const optional<float>& tileSizeFactor() const { return _tileSizeFactor; }

        optional<bool>& cropFeatures() { return _cropFeatures; }
        const optional<bool>& cropFeatures() const { return _cropFeatures; }

        void addLevel( const FeatureLevel& level );

        unsigned getNumLevels() const;

        const FeatureLevel* getLevel( unsigned i ) const;

        float getMaxRange() const;

        unsigned chooseLOD( const FeatureLevel& level, double fullExtentRadius ) const;

    public:
        Config getConfig() const;

    protected:
        optional<float> _tileSizeFactor;
        optional<bool>  _cropFeatures;
        typedef std::multimap<float,FeatureLevel> Levels;
        Levels _levels;

        void fromConfig( const Config& conf );
    };

} } // namespace osgEarth::Features

#endif // OSGEARTHFEATURES_FEATURE_DISPLAY_LAYOUT_H